diff --git a/firmware/Makefile b/firmware/Makefile
index 732c824..349b4ff 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -73,6 +73,8 @@ clean:
 	for dir in $(SUBDIRS); do \
 	    $(MAKE) $(CONFIG_MAKE_PRINTDIRECTORY) -C $$dir clean; \
 	done
+	$(MAKE) $(CONFIG_MAKE_PRINTDIRECTORY) -C l0dable clean
+
 flash: all
 	../tools/bootloader/autoflash
 
diff --git a/firmware/Makefile.inc b/firmware/Makefile.inc
index 855d011..69097c0 100644
--- a/firmware/Makefile.inc
+++ b/firmware/Makefile.inc
@@ -7,7 +7,7 @@
 TARGET = LPC13xx
 FLASH = 32K
 SRAM = 8K
-RAMCODE=2048
+RAMCODE=2548
 
 # For USB HID support the LPC134x reserves 384 bytes from the sram,
 # if you don't want to use the USB features, just use 0 here.
diff --git a/firmware/SERIAL_DOKU b/firmware/SERIAL_DOKU
index 4c28ee7..d67b459 100644
--- a/firmware/SERIAL_DOKU
+++ b/firmware/SERIAL_DOKU
@@ -4,6 +4,8 @@ Ck<hex>: set encryptionkey
 Ct<hex>: set txmac
 Cc<hex>: set channel
 Ct<hex>: set rxmac(0)
+Cl<hex>: set rxlens
+Ce<hex>: sec encrpytion on/off
 
 s <hex>: send packet
 s+ <hex>: send packet 10 times
diff --git a/firmware/applications/final.c b/firmware/applications/final.c
index bedce8c..cce4e3b 100644
--- a/firmware/applications/final.c
+++ b/firmware/applications/final.c
@@ -15,25 +15,9 @@
 void init_nick();
 void fancyNickname();
 
-#include "lcd/allfonts.h"
-void forLoadables(int i){
-    if(i){
-        lcdSetPixel(0,0);
-        font=&Font_Invaders;
-        ECIES_encyptkeygen(0,0,0,0,0,0);
-        systickGetTicks();
-        ECIES_embedded_public_key_validation();
-        point_copy(0,0,0,0);
-        point_is_zero(0,0);
-        bitstr_parse_export(0,0);
-        nrf_rcv_pkt_time_encr();
-    };
-};
-
 void main_final(void) {
     //checkFirstBoot();
     init_final();
-    forLoadables(0);
     menuflags|=MENU_TIMEOUT;
 
     while(1){
diff --git a/firmware/applications/final/config.c b/firmware/applications/final/config.c
index a0054d7..444c8ea 100644
--- a/firmware/applications/final/config.c
+++ b/firmware/applications/final/config.c
@@ -47,7 +47,7 @@ void changer(void){
         lcdPrint("[");
         lcdPrint(IntToStr(current_offset/visible_lines,1,0));
         lcdPrint("/");
-        lcdPrint(IntToStr(numentries/visible_lines,1,0));
+        lcdPrint(IntToStr((numentries-1)/visible_lines,1,0));
         lcdPrint("]");
         lcdNl();
 
diff --git a/firmware/applications/final/flame.c b/firmware/applications/final/flame.c
index 3943458..a9ce06a 100644
--- a/firmware/applications/final/flame.c
+++ b/firmware/applications/final/flame.c
@@ -94,7 +94,7 @@ void tick_flame(void) { // every 10ms
     }
 
     if (flameMode == FLAME_UP) {
-        if (flameI2Cpwm + flameSpeedUp > flameI2Cpwm ) {
+        if (0xFF - flameI2Cpwm >= flameSpeedUp ) {
             flameI2Cpwm += flameSpeedUp;
         } else {        
             flameI2Cpwm = 0xFF;
@@ -113,7 +113,7 @@ void tick_flame(void) { // every 10ms
     }
 
     if (flameMode == FLAME_DOWN) {
-        if (flameI2Cpwm - flameSpeedDown < flameI2Cpwm ) {
+        if (flameSpeedDown <= flameI2Cpwm) {
             flameI2Cpwm -= flameSpeedDown;
         } else {
             flameI2Cpwm = 0x00;
diff --git a/firmware/applications/final/mesh.c b/firmware/applications/final/mesh.c
index 84b4784..82ffc73 100644
--- a/firmware/applications/final/mesh.c
+++ b/firmware/applications/final/mesh.c
@@ -22,59 +22,6 @@ void init_mesh(void){
     initMesh();
 };
 
-void m_tset(void){
-    _timet=1311961112;
-};
-
-//# MENU debug MeshInfo
-void m_time(void){
-    struct tm* tm;
-    char c[2]={0,0};
-    getInputWaitRelease();
-    delayms(100);
-    do{
-        lcdClear();
-        tm= mygmtime(getSeconds());
-        lcdPrint(IntToStr(tm->tm_hour,2,F_LONG));
-        lcdPrint(":");
-        lcdPrint(IntToStr(tm->tm_min,2,F_LONG|F_ZEROS));
-        lcdPrint(":");
-        lcdPrint(IntToStr(tm->tm_sec,2,F_LONG|F_ZEROS));
-        lcdNl();
-        lcdPrint(IntToStr(tm->tm_mday,2,F_LONG));
-        lcdPrint(".");
-        lcdPrint(IntToStr(tm->tm_mon+1,2,0));
-        lcdPrint(".");
-        lcdPrint(IntToStr(tm->tm_year+YEAR0,4,F_LONG|F_ZEROS));
-        lcdNl();
-
-        lcdNl();
-        lcdPrint("<");
-
-        for(int i=0;i<MESHBUFSIZE;i++){
-            if(!meshbuffer[i].flags&MF_USED){
-                c[0]='_';
-            }else{
-                c[0]=meshbuffer[i].pkt[0];
-            };
-            lcdPrint(c);
-        };
-        lcdPrintln(">");
-
-        lcdPrint("Gen:");
-        lcdPrintInt(meshgen);
-        lcdNl();
-        lcdRefresh();
-        delayms_queue(50);
-    }while ((getInputRaw())==BTN_NONE);
-};
-
-
-inline void blink(char a, char b){
-    gpioSetValue (a,b, 1-gpioGetValue(a,b));
-};
-
-
 int choose(char * texts, int8_t menuselection){
     uint8_t numentries = 0;
     uint8_t visible_lines = 0;
diff --git a/firmware/applications/final/util.c b/firmware/applications/final/util.c
index fb4fbe7..aa99c61 100644
--- a/firmware/applications/final/util.c
+++ b/firmware/applications/final/util.c
@@ -13,147 +13,6 @@
 
 /**************************************************************************/
 
-//# MENU debug ChkLight
-void ChkLight(void) {
-    int dx=0;
-    int dy=8;
-    dx=DoString(0,dy,"Light:");
-    DoString(0,dy+16,"Night:");
-    while ((getInputRaw())==BTN_NONE){
-        DoInt(dx,dy,GetLight());
-        DoInt(dx,dy+16,isNight());
-        DoInt(dx,dy+8,GLOBAL(daytrig));
-        lcdDisplay();
-        delayms_queue(100);
-    };
-    dx=DoString(0,dy+24,"Done.");
-}
-
-//# MENU debug ChkBattery
-void ChkBattery(void) {
-    do{
-        lcdClear();
-        lcdPrintln("Voltage:");
-        lcdPrintln(IntToStr(GetVoltage(),5,0));
-        lcdNl();
-        lcdPrintln("Chrg_stat:");
-        if(gpioGetValue(RB_PWR_CHRG)){
-            lcdPrintln("1");
-        }else{
-            lcdPrintln("0");
-        };
-        lcdRefresh();
-        delayms_queue(100);
-    } while ((getInputRaw())==BTN_NONE);
-}
-
-//# MENU debug Uptime
-void uptime(void) {
-    int t;
-    int h;
-    char flag;
-    while ((getInputRaw())==BTN_NONE){
-        lcdClear();
-        lcdPrintln("Uptime:");
-        t=getTimer()/(1000/SYSTICKSPEED);
-        h=t/60/60;
-        flag=F_ZEROS;
-        if(h>0){
-            lcdPrint(IntToStr(h,2,flag));
-            lcdPrint("h");
-            flag|=F_LONG;
-        };
-        h=t/60%60;
-        if(h>0){
-            lcdPrint(IntToStr(h,2,flag));
-            lcdPrint("m");
-            flag|=F_LONG;
-        };
-        h=t%60;
-        if(h>0){
-            lcdPrint(IntToStr(h,2,flag));
-            lcdPrint("s");
-        };
-        lcdNl();
-        lcdNl();
-        lcdPrintln("Ticks:");
-        lcdPrint(IntToStr(_timectr,10,0));
-        lcdRefresh();
-        delayms_queue(200);
-    };
-    lcdPrintln("done.");
-}
-
-//# MENU debug Uuid
-void uuid(void) {
-    IAP_return_t iap_return;
-    iap_return = iapReadSerialNumber();
-    lcdClear();
-    lcdPrintln("UUID:");
-    lcdPrintIntHex(iap_return.Result[0]); lcdNl();
-    lcdPrintIntHex(iap_return.Result[1]); lcdNl();
-    lcdPrintIntHex(iap_return.Result[2]); lcdNl();
-    lcdPrintIntHex(iap_return.Result[3]); lcdNl();
-    lcdNl();
-    lcdPrintln("Beacon ID:");
-    lcdPrintln(IntToStrX(GetUUID32(),4));
-    lcdRefresh();
-}
-
-//# MENU debug Qstatus
-void Qstatus(void) {
-    int dx=0;
-    int dy=8;
-    lcdClear();
-    dx=DoString(0,dy+16,"Qdepth:");
-    while ((getInputRaw())!=BTN_ENTER){
-        DoInt(dx,dy+16,(the_queue.qend-the_queue.qstart+MAXQENTRIES)%MAXQENTRIES);
-        lcdDisplay();
-        if(getInputRaw()!=BTN_NONE)
-            work_queue();
-        else
-            delayms(10);
-    };
-    dy+=16;
-    dx=DoString(0,dy,"Done.");
-};
-
-void blink_led0(void){
-    gpioSetValue (RB_LED0, 1-gpioGetValue(RB_LED0));
-};
-
-void tick_alive(void){
-    static int foo=0;
-
-    if(GLOBAL(alivechk)==0)
-        return;
-
-	if(foo++>500/SYSTICKSPEED){
-		foo=0;
-        if(GLOBAL(alivechk)==2)
-            push_queue(blink_led0);
-        else
-            blink_led0();
-	};
-    return;
-};
-
-//# MENU debug ShowSP
-void getsp(void) {
-    int dx=0;
-    int dy=8;
-    int x;
-    lcdClear();
-    dx=DoString(0,dy,"SP:");
-    while ((getInputRaw())==BTN_NONE){
-        __asm(  "mov %0, sp\n" : "=r" (x) :);
-        DoIntX(0,dy+8,x);
-        lcdDisplay();
-        delayms_queue(50);
-    };
-    dy+=16;
-    dx=DoString(0,dy,"Done.");
-};
 
 //# MENU msc
 void msc_menu(void){
diff --git a/firmware/applications/flame.c b/firmware/applications/flame.c
index 2831505..80bd060 100644
--- a/firmware/applications/flame.c
+++ b/firmware/applications/flame.c
@@ -84,7 +84,7 @@ void tick_flame(void) { // every 10ms
     }
 
     if (flameMode == FLAME_UP) {
-	if (flameI2Cpwm + flameSpeedUp > flameI2Cpwm ) {
+	if (0xFF - flameI2Cpwm >= flameSpeedUp) {
 	    flameI2Cpwm += flameSpeedUp;
 	} else {	
 	    flameI2Cpwm = 0xFF;
@@ -103,7 +103,7 @@ void tick_flame(void) { // every 10ms
     }
 
     if (flameMode == FLAME_DOWN) {
-	if (flameI2Cpwm - flameSpeedDown < flameI2Cpwm ) {
+	if (flameSpeedDown <= flameI2Cpwm) {
 	    flameI2Cpwm -= flameSpeedDown;
 	} else {
 	    flameI2Cpwm = 0x00;
diff --git a/firmware/applications/mkfirmware.pl b/firmware/applications/mkfirmware.pl
index 2c465b6..5817b67 100755
--- a/firmware/applications/mkfirmware.pl
+++ b/firmware/applications/mkfirmware.pl
@@ -109,13 +109,13 @@ print "}};";
 
 print "";
 print "// Tick & init functions:";
-print qq!void tick_$app(void) {!;
+print qq!inline void tick_$app(void) {!;
 for (sort @ticks){
     print qq!\t$_();!;
 };
 print qq!};!;
 
-print qq!void init_$app(void) {!;
+print qq!inline void init_$app(void) {!;
 for (sort @inits){
     print qq!\t$_();!;
 };
diff --git a/firmware/applications/s.c b/firmware/applications/s.c
index e6d4910..f047c80 100644
--- a/firmware/applications/s.c
+++ b/firmware/applications/s.c
@@ -5,120 +5,34 @@
 #include "lcd/render.h"
 #include "lcd/allfonts.h"
 
-void ReinvokeISP(void);
-void EnableWatchdog(uint32_t ms);
-void delayms(uint32_t ms);
+void backlightInit(void);
 
 /**************************************************************************/
 
 void main_s(void) {
-    //Make PIO1_11 an analog input
-    gpioSetDir(RB_LED3, gpioDirection_Input);
-    IOCON_PIO1_11 = 0x41;
-
-    backlightInit();
-
-    uint32_t j=0;
-
-    //disable the JTAG on PIO3_3
-    IOCON_PIO3_3 = 0x10;
-
-    int yctr=8;
-    int dx=0;
-
-    font_direction = FONT_DIR_LTR; // LeftToRight is the default
-    font = &Font_8x8;
-
-    static FONT fonts[] = {
-	 &Font_7x8, 
-	 &Font_Ubuntu18pt, // 3 byte-font
-	 &Font_8x8,
-    };
-
-    int fontctr=0;
-    yctr=18;
-
-    uint8_t trigger;
-
-#define SEND
-#ifdef SEND
-  trigger=200;
-  gpioSetDir(RB_LED0, gpioDirection_Output);
-  IOCON_JTAG_TDI_PIO0_11 = 0x11;
-#else
-  trigger=380;
-  gpioSetDir(RB_LED0, gpioDirection_Input);
-  IOCON_JTAG_TDI_PIO0_11 = 0x42;
-#endif
-
-
-    uint32_t ctr=0;
+    uint8_t key;
+    //lcdClear();
     while (1) {
-	ctr++;
-	uint32_t results;
-	lcdDisplay();
-	delayms(10);
+        uint8_t contrast = lcdRead(0xDF);
+        lcdInit(); // display
+        lcdPrint("reg=");
+        lcdPrintCharHex(contrast);
+        lcdNl();
+        lcdDisplay();
+        while(1);
+        delayms(500);
 
-	font=fonts[fontctr];
+        //key= getInputWait();
 
-	if(gpioGetValue(RB_BTN3)==0){
-		while(gpioGetValue(RB_BTN3)==0);
-		trigger +=10;
-	};
-	if(gpioGetValue(RB_BTN2)==0){
-		while(gpioGetValue(RB_BTN2)==0);
-		trigger -=10;
-	};
-	//dx=DoString(0,0,"Trig:");
-	//dx=DoInt(dx,0,trigger);
-	//DoString(dx,0," ");
-
-	if(gpioGetValue(RB_BTN0)==0){
-		while(gpioGetValue(RB_BTN0)==0);
-		DoString(0,8,"Enter ISP!");
-		lcdDisplay();
-		EnableWatchdog(1000*5);
-		ReinvokeISP();
-	};
-
-    font = &Font_Ubuntu36pt;
-    static uint8_t ctrx=0, ctry=0, dirx=1, diry=1;
-	dx=DoString(ctrx,ctry,"S");
-    if( dirx ){
-        if(ctrx++ == 60)
-            dirx = 0;
-    }else{
-        if(ctrx-- == 0)
-            dirx=1;
+        // Easy flashing
+        if(key==BTN_LEFT){
+            DoString(0,8,"Enter ISP!");
+            lcdDisplay();
+            ISPandReset();
+        }
     }
-    if( diry ){
-        if(ctry++ == 12)
-            diry = 0;
-    }else{
-        if(ctry-- == 0)
-            diry=1;
-    }
-	font = &Font_7x8;
-
-	results = adcRead(1);
-	//dx=DoString(0,yctr+28,"Voltage:");
-	results *= 10560;
-	results /= 1024;
-	//DoInt(dx,yctr+28,results);
-
-	if( results < 3500 ){
-	    DoString(0,yctr+30,"Shutdown");
-	    gpioSetValue (RB_PWR_GOOD, 0); 
-	    gpioSetValue (RB_LCD_BL, 0); 
-	    SCB_SCR |= SCB_SCR_SLEEPDEEP;
-	    PMU_PMUCTRL = PMU_PMUCTRL_DPDEN_DEEPPOWERDOWN;
-	    __asm volatile ("WFI");
-	}else{
-	    //DoString(0,yctr+30,"OK           ");
-		;
-	}
-
-    }
-
-    return;
 }
+
+void tick_minimal(void){
+    return;
+};
diff --git a/firmware/applications/serial/serial.c b/firmware/applications/serial/serial.c
index f27dada..287001a 100644
--- a/firmware/applications/serial/serial.c
+++ b/firmware/applications/serial/serial.c
@@ -29,10 +29,9 @@ uint32_t const beaconkey[4] = {
 uint32_t remotekey[4] = {
     0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff
 };
-uint32_t meshkey[4] = {
-    0x0, 0x0, 0x0, 0x0
-};
+extern uint32_t const meshkey[4];
 
+char funkencrypt=0;
 
 #if CFG_USBMSC
 #error "MSC is defined"
@@ -151,6 +150,7 @@ int process(char * input){
             config.nrmacs=1;
             nrf_config_set(&config);
             memcpy(thekey,meshkey,sizeof(thekey));
+            funkencrypt=1;
         }else if(input[1]=='r'){
             config.channel=REMOTE_CHANNEL;
             memcpy(config.txmac,REMOTE_MAC,5);
@@ -159,6 +159,7 @@ int process(char * input){
             config.nrmacs=1;
             nrf_config_set(&config);
             memcpy(thekey,remotekey,sizeof(thekey));
+            funkencrypt=1;
         }else if(input[1]=='b'){
             config.channel=BEACON_CHANNEL;
             memcpy(config.txmac,BEACON_MAC,5);
@@ -167,6 +168,7 @@ int process(char * input){
             config.nrmacs=1;
             nrf_config_set(&config);
             memcpy(thekey,beaconkey,sizeof(thekey));
+            funkencrypt=1;
         }else if(input[1]=='?'){
             nrf_config_get(&config);
             puts_plus("Ch: ");puts_plus(IntToStrX( config.channel,2 )); puts_plus("\r\n");
@@ -202,6 +204,10 @@ int process(char * input){
                 puts_plus(" ");
             };
             puts_plus("\r\n");
+
+            puts_plus("encrypt : ");
+                puts_plus(IntToStrX( funkencrypt,2 ));
+            puts_plus("\r\n");
         };
     }else if(input[0]=='C'){
         int len;
@@ -228,6 +234,15 @@ int process(char * input){
         }else if(input[1]=='c'){
             config.channel=*hex;
             nrf_config_set(&config);
+        }else if(input[1]=='l'){
+            config.maclen[0]=uint8ptouint32(hex);
+            config.maclen[1]=uint8ptouint32(hex+4);
+            config.maclen[2]=uint8ptouint32(hex+8);
+            config.maclen[3]=uint8ptouint32(hex+12);
+            config.maclen[4]=uint8ptouint32(hex+16);
+            nrf_config_set(&config);
+        }else if(input[1]=='e'){
+            funkencrypt= uint8ptouint32(hex);
         };
     }else if (input[0]=='s'){
         __attribute__ ((aligned (4))) uint8_t buf[32];
@@ -251,7 +266,7 @@ int process(char * input){
             len+=2; // Add crc!
 
             memcpy(buf,hex,len);
-            status=nrf_snd_pkt_crc_encr(len,buf,thekey);
+            status=nrf_snd_pkt_crc_encr(len,buf,funkencrypt?thekey:NULL);
 
             puts_plus("P ");
             puts_plus("[");puts_plus(IntToStrX(len,2));puts_plus("] ");
@@ -266,7 +281,7 @@ int process(char * input){
             while(--ctr>0){
                 delayms(23);
                 memcpy(buf,hex,len);
-                status=nrf_snd_pkt_crc_encr(len,buf,thekey);
+                status=nrf_snd_pkt_crc_encr(len,buf,funkencrypt?thekey:NULL);
             };
         }else if (input[1]=='t'){
             static int ctr=1;
@@ -283,7 +298,7 @@ int process(char * input){
 
             buf[12]=0xff; // salt (0xffff always?)
             buf[13]=0xff;
-            status=nrf_snd_pkt_crc_encr(16,buf,thekey);
+            status=nrf_snd_pkt_crc_encr(16,buf,funkencrypt?thekey:NULL);
         }else{
         };
         puts_plus("S state=");
@@ -310,7 +325,7 @@ int process(char * input){
         puts_plus("D receive ...\r\n");
         nrf_rcv_pkt_start();
         do{
-            len=nrf_rcv_pkt_poll_dec(sizeof(buf),buf,thekey);
+            len=nrf_rcv_pkt_poll_dec(sizeof(buf),buf,funkencrypt?thekey:NULL);
             // Receive
             if(len==0||len==-1||len==-2){ //No pkt, Pkt2large, NoPktError
                 delayms(10);
diff --git a/firmware/basic/ecc.h b/firmware/basic/ecc.h
index d946cd3..05b1d3b 100644
--- a/firmware/basic/ecc.h
+++ b/firmware/basic/ecc.h
@@ -17,20 +17,16 @@ int bitstr_parse_export(char *exp, const char *s);
 
 void ECIES_setup(void);
 
-void ECIES_encyptkeygen(uint8_t *px, uint8_t *py,
-                uint8_t k1[16], uint8_t k2[16], uint8_t *Rx_exp, uint8_t *Ry_exp);
+void ECIES_encyptkeygen(uint8_t *px, uint8_t *py, uint8_t k1[16], uint8_t k2[16], uint8_t *Rx_exp, uint8_t *Ry_exp);
 
-int ECIES_decryptkeygen(uint8_t *rx, uint8_t *ry,
-             uint8_t k1[16], uint8_t k2[16], const char *privkey);
+int ECIES_decryptkeygen(uint8_t *rx, uint8_t *ry, uint8_t k1[16], uint8_t k2[16], const char *privkey);
 #define ECIES_OVERHEAD (8 * NUMWORDS + 8)
 
                   /* ECIES encryption; the resulting cipher text message will be
                                             (len + ECIES_OVERHEAD) bytes long */
-void ECIES_encryption(char *msg, const char *text, int len, 
-		      const char *Px, const char *Py);
+void ECIES_encryption(char *msg, const char *text, int len, const char *Px, const char *Py);
                                                           /* ECIES decryption */
-int ECIES_decryption(char *text, const char *msg, int len, 
-		     const char *privkey);
+int ECIES_decryption(char *text, const char *msg, int len, const char *privkey);
 
 #define MACRO(A) do { A; } while(0)
 #define MIN(a, b) ((a) < (b) ? (a) : (b))
diff --git a/firmware/basic/keyin.c b/firmware/basic/keyin.c
index a895a0f..cc4cecb 100644
--- a/firmware/basic/keyin.c
+++ b/firmware/basic/keyin.c
@@ -52,6 +52,8 @@ uint8_t getInputWait(void) {
 
 uint8_t getInputWaitTimeout(int timeout) {
     uint8_t key;
+    if(timeout==0)
+        return getInputWait();
     int end=_timectr+timeout*(1000/SYSTICKSPEED);
     while ((key=getInputRaw())==BTN_NONE){
         if(_timectr>end)
diff --git a/firmware/basic/random.h b/firmware/basic/random.h
index 3ff72db..87c640e 100644
--- a/firmware/basic/random.h
+++ b/firmware/basic/random.h
@@ -1,6 +1,6 @@
 #ifndef _RANDOM_H_
 #define _RANDOM_H_
-
+#include <stdint.h>
 void randomInit(void);
 uint32_t getRandom(void);
 
diff --git a/firmware/basic/stringin.c b/firmware/basic/stringin.c
index cce6e3f..0e5bfa5 100644
--- a/firmware/basic/stringin.c
+++ b/firmware/basic/stringin.c
@@ -14,7 +14,7 @@ struct in{
 	bool done;
 } s_input;
 
-void inputInit(char p[],char s[], uint8_t l, uint8_t as, uint8_t ae) {
+static void inputInit(char p[],char s[], uint8_t l, uint8_t as, uint8_t ae) {
 	//TODO: Check length!
 	s_input.prompt = p;
 	s_input.line = s;
@@ -30,7 +30,7 @@ void inputInit(char p[],char s[], uint8_t l, uint8_t as, uint8_t ae) {
 }
 
 
-void inputMove() {
+static void inputMove() {
 	char *cur = s_input.line+s_input.pos+s_input.dcursor;
     switch(getInputWaitRepeat()){
         case BTN_LEFT:
@@ -78,7 +78,7 @@ void inputMove() {
     }
 }
 
-void inputDraw() {
+static void inputDraw() {
     char tmp[2]= {0,0};
 	lcdClear();
 	DoString(0,0,s_input.prompt);
@@ -89,7 +89,7 @@ void inputDraw() {
 	DoString(s_input.dcursor * CHARWIDTH, 40, "-");
 }
 
-void inputClean() {
+static void inputClean() {
 	for (int x=0;x<=s_input.maxlength;x++) {
 		if (s_input.line[x] == 0) {
 			x--;
diff --git a/firmware/basic/xxtea.h b/firmware/basic/xxtea.h
index da93394..1d0ffe0 100644
--- a/firmware/basic/xxtea.h
+++ b/firmware/basic/xxtea.h
@@ -1,8 +1,8 @@
 #ifndef _XXTEA_H_
 #define _XXTEA_H_
+#include <stdint.h>
 
-void xxtea_cbcmac(uint32_t mac[4], uint32_t *data,
-        uint32_t len, uint32_t const key[4]);
+void xxtea_cbcmac(uint32_t mac[4], uint32_t *data, uint32_t len, uint32_t const key[4]);
 void xxtea_encode_words(uint32_t *v, int n, uint32_t const k[4]);
 void xxtea_decode_words(uint32_t *v, int n, uint32_t const k[4]);
 
diff --git a/firmware/filesystem/execute.c b/firmware/filesystem/execute.c
index 9b0aa91..3ae2a86 100644
--- a/firmware/filesystem/execute.c
+++ b/firmware/filesystem/execute.c
@@ -30,7 +30,7 @@ void execute_file (const char * fname, uint8_t checksignature, uint8_t decode){
     dst=(void (*)(void)) (sram_top); 
     lcdPrint("T:"); lcdPrintIntHex(dst); lcdNl();
     */
-    dst=(void (*)(void)) 0x10001800;
+    dst=(void (*)(void)) 0x1000160C;
 
     res=f_open(&file, fname, FA_OPEN_EXISTING|FA_READ);
 
diff --git a/firmware/funk/mesh.c b/firmware/funk/mesh.c
index e69a798..e15656d 100644
--- a/firmware/funk/mesh.c
+++ b/firmware/funk/mesh.c
@@ -8,11 +8,11 @@
 #include "basic/random.h"
 
 char meshgen=0; // Generation
-char meshincctr=0; // Generation
+char meshincctr=0;
 MPKT meshbuffer[MESHBUFSIZE];
 
 uint32_t const meshkey[4] = {
-    0x00000000, 0x00000000, 0x00000000, 0x00000000
+    0x00000042, 0x000005ec, 0x00000023, 0x00000005
 };
 
 struct NRF_CFG oldconfig;
@@ -45,6 +45,8 @@ MPKT * meshGetMessage(uint8_t type){
     if(meshbuffer[free].flags==MF_FREE){
         memset(&meshbuffer[free],0,sizeof(MPKT));
         MO_TYPE_set(meshbuffer[free].pkt,type);
+        MO_GEN_set(meshbuffer[free].pkt,meshgen);
+        meshbuffer[free].flags=MF_USED;
     };
     return &meshbuffer[free];
 };
diff --git a/firmware/funk/nrf24l01p.c b/firmware/funk/nrf24l01p.c
index 8c3c464..383df03 100644
--- a/firmware/funk/nrf24l01p.c
+++ b/firmware/funk/nrf24l01p.c
@@ -153,13 +153,12 @@ int nrf_rcv_pkt_poll_dec(int maxsize, uint8_t * pkt, uint32_t const key[4]){
         return len;
 
     cmpcrc=crc16(pkt,len-2);
-    if(cmpcrc != (pkt[len-2] <<8 | pkt[len-1])) {
+    if(key!=NULL)
         xxtea_decode_words((uint32_t*)pkt,len/4,key);
 
-        cmpcrc=crc16(pkt,len-2);
-        if(cmpcrc != (pkt[len-2] <<8 | pkt[len-1])) {
-            return -3; // CRC failed
-        };
+    cmpcrc=crc16(pkt,len-2);
+    if(cmpcrc != (pkt[len-2] <<8 | pkt[len-1])) {
+        return -3; // CRC failed
     };
     return len;
 };
diff --git a/firmware/l0dable/EXPORTS b/firmware/l0dable/EXPORTS
index 05a3962..c25d631 100644
--- a/firmware/l0dable/EXPORTS
+++ b/firmware/l0dable/EXPORTS
@@ -35,3 +35,33 @@ push_queue
 the_config
 the_queue
 work_queue
+selectFile
+nrf_snd_pkt_crc_encr
+nrf_rcv_pkt_time_encr
+getInput
+ECIES_encyptkeygen
+f_open
+f_read
+strlen
+strcpy
+xxtea_encode_words
+getRandom
+crc16
+f_write
+f_close
+ECIES_decryptkeygen
+bitstr_parse_export
+f_get_rc_string
+xxtea_decode_words
+systickGetTicks
+lcdFill
+memcpy
+DoChar
+font
+Font_Invaders
+Font_7x8
+lcdBuffer
+meshGetMessage
+nickname
+uint32touint8p
+uint8ptouint32
diff --git a/firmware/l0dable/debug.c b/firmware/l0dable/debug.c
index 0ba5381..4686da0 100644
--- a/firmware/l0dable/debug.c
+++ b/firmware/l0dable/debug.c
@@ -124,7 +124,7 @@ void uuid(void) {
     lcdPrintIntHex(iap_return.Result[3]); lcdNl();
     lcdNl();
     lcdPrintln("Beacon ID:");
-    lcdPrintln(IntToStrX(GetUUID32(),4));
+    lcdPrintln(IntToStrX(GetUUID32(),8));
     lcdRefresh();
 }
 
diff --git a/firmware/l0dable/invaders.c b/firmware/l0dable/invaders.c
new file mode 100644
index 0000000..8fef54c
--- /dev/null
+++ b/firmware/l0dable/invaders.c
@@ -0,0 +1,491 @@
+#include <sysinit.h>
+#include <string.h>
+
+#include "basic/basic.h"
+#include "basic/config.h"
+#include "basic/random.h"
+
+#include "lcd/render.h"
+#include "lcd/display.h"
+#include "lcd/allfonts.h"
+
+#include "funk/mesh.h"
+
+#include "usetable.h"
+/**************************************************************************/
+#define POS_PLAYER_Y 60
+#define POS_PLAYER_X RESX/2-3
+#define POS_UFO_Y 0
+#define ENEMY_ROWS 3
+#define ENEMY_COLUMNS 6
+#define DISABLED 255
+
+#define UFO_PROB 1024
+
+#define TYPE_PLAYER  1
+#define TYPE_ENEMY_A 3
+#define TYPE_ENEMY_B 2
+#define TYPE_ENEMY_C 4
+#define TYPE_UFO     5
+
+#define BUNKERS 3
+#define BUNKER_WIDTH  10
+static const uint8_t BUNKER_X[] = {15, RESX/2-BUNKER_WIDTH/2,RESX-BUNKER_WIDTH-15};
+static const uint8_t ENEMY_WIDTHS[] = {8,10,12};
+
+struct gamestate {
+    char player;
+	char ufo;
+    char shot_x, shot_y;
+	char shots_x[ENEMY_COLUMNS];
+	char shots_y[ENEMY_COLUMNS];
+    char alive;
+    int16_t move; 
+	char direction, lastcol;
+    bool killed; 
+	bool step;
+	uint32_t score;
+	uint16_t level;
+	int8_t rokets;
+    char enemy_x[ENEMY_ROWS][ENEMY_COLUMNS];
+    char enemy_row_y[ENEMY_ROWS];
+    uint8_t bunker[BUNKERS][BUNKER_WIDTH]; 
+} game; 
+char key;
+bool highscore_set(uint32_t score, char nick[]);
+uint32_t highscore_get(char nick[]);
+
+void init_game();
+void init_enemy();
+void check_end();
+void move_ufo();
+void move_shot();
+void move_shots();
+void move_player();
+void move_enemy();
+void draw_score();
+void draw_bunker();
+void draw_player();
+void draw_enemy();
+void draw_shots();
+void draw_sprite(char type, char x, char y);
+void draw_ufo();
+void screen_intro();
+void screen_gameover();
+void screen_level();
+bool check_bunker(char xpos, char ypos, int8_t shift);
+
+void ram(void) {
+    //gpioSetValue (RB_LED1, CFG_LED_OFF); 
+    //backlightInit();
+    while(1) {
+		screen_intro();
+		game.rokets = 3; 
+		game.level = 1;
+		game.score = 0;
+		init_game();
+		screen_level();
+		while (game.rokets>=0) {
+			////checkISP();
+			lcdFill(0);
+			check_end();
+			move_ufo();
+			move_shot();
+			move_shots();
+			move_player();
+			move_enemy();
+			draw_score();
+			draw_ufo();
+			draw_bunker();
+			draw_player();
+			draw_enemy();
+			draw_shots();
+			//        draw_status();
+			lcdDisplay();
+			delayms(12);
+		}
+		screen_gameover();
+	}
+    return;
+}
+
+void screen_intro() {
+	uint32_t highscore;
+	char highnick[20];
+	char key=0;
+	while(key==0) {
+		lcdFill(0);
+		font = &Font_Invaders;
+        DoString(28,25,"ABC");
+		font = &Font_7x8;
+		DoString (28,40,"SPACE");
+		DoString (18,50,"INVADERS");
+		
+		highscore = highscore_get(highnick);
+		DoInt(0, 0, highscore);
+		DoString (0, 9, highnick);
+		lcdDisplay();
+
+		delayms_queue(50);
+		key=getInput();
+	}
+}
+
+void screen_gameover() {
+	char key =0;
+	while(key==0) {
+		lcdFill(0);
+		font = &Font_7x8;
+		DoString (12,32, "GAME OVER");
+		DoInt (0,0, game.score);
+		if (highscore_set(game.score, GLOBAL(nickname)))
+			DoString (0,9,"HIGHSCORE!");
+		lcdDisplay();
+		delayms_queue(50);
+		key=getInput();
+	}
+}	
+
+void screen_level() {
+	lcdFill(0);
+	draw_score();
+	font = &Font_7x8;
+	int dx = DoString(20,32, "Level ");
+	DoInt(dx,32,game.level);
+	lcdDisplay();
+	delayms(500);
+}
+
+bool highscore_set(uint32_t score, char nick[]) {
+    MPKT * mpkt= meshGetMessage('i');
+    if(MO_TIME(mpkt->pkt)>score)
+        return false;
+
+    MO_TIME_set(mpkt->pkt,score);
+    strcpy((char*)MO_BODY(mpkt->pkt),nick);
+
+	return true;
+}
+
+uint32_t highscore_get(char nick[]){
+    MPKT * mpkt= meshGetMessage('i');
+
+    strcpy(nick,(char*)MO_BODY(mpkt->pkt));
+
+	return MO_TIME(mpkt->pkt);
+}
+
+void init_game(void) {
+	game.player = POS_PLAYER_X;
+	game.shot_x = DISABLED;
+	game.shot_y = 0;
+	game.alive = ENEMY_ROWS*ENEMY_COLUMNS;
+	game.move = 0;
+	if (getRandom()%2 == 0) {
+		game.direction = -1;
+		game.lastcol = ENEMY_COLUMNS-1;
+	} else {
+		game.direction = 1;
+		game.lastcol = 0;
+	}
+	game.killed = 0;
+	game.step = false;
+	game.ufo = DISABLED;
+	init_enemy();
+	
+	for (int col=0; col<ENEMY_COLUMNS; col++){
+	   game.shots_x[col] = DISABLED;
+   	}
+
+	for (int b=0; b<BUNKERS; b++){
+		//for (int slice=0; slice<BUNKER_WIDTH; slice++){
+		//	game.bunker[b][slice] = 255<<2;
+		//}
+		game.bunker[b][0] = 0b00111100;
+		game.bunker[b][1] = 0b01111100; 
+		game.bunker[b][2] = 0b11111100;
+		game.bunker[b][3] = 0b11100000;
+		game.bunker[b][4] = 0b11100000;
+		game.bunker[b][5] = 0b11100000;
+		game.bunker[b][6] = 0b11100000;
+		game.bunker[b][7] = 0b11111100;
+		game.bunker[b][8] = 0b01111100;
+		game.bunker[b][9] = 0b00111100;
+	}
+}
+
+void init_enemy() {
+    for (int row = 0; row<ENEMY_ROWS; row++) {
+        game.enemy_row_y[row] = 10 + (40/ENEMY_ROWS)*row;
+        for (int col = 0; col<ENEMY_COLUMNS; col++) {
+            game.enemy_x[row][col] = 5+(86/ENEMY_COLUMNS)*col+(2-row);
+        }
+    }
+}
+
+bool check_bunker(char xpos, char ypos, int8_t shift){
+	for (int b=0; b<BUNKERS; b++) {
+		if (xpos>BUNKER_X[BUNKERS-1-b] &&
+				xpos<BUNKER_X[BUNKERS-1-b]+BUNKER_WIDTH &&
+				ypos<RESY-8 &&
+				ypos>RESY-16) {
+			int offset = BUNKER_WIDTH - (xpos-BUNKER_X[BUNKERS-1-b]);	
+			if (game.bunker[b][offset]!=0) {
+				if (shift>0)
+					game.bunker[b][offset]&=game.bunker[b][offset]<<shift;
+				else
+					game.bunker[b][offset]&=game.bunker[b][offset]>>-shift;
+				return true;
+			}
+		}
+	}
+	return false;
+}
+
+void move_shot() {
+    //No shot, do nothing
+    if(game.shot_x == DISABLED) {
+        return;
+    }
+    
+    //moving out of top, end shot
+    if (game.shot_y <= 0) {
+            game.shot_x = DISABLED;
+            return;
+    } 
+
+   if (check_bunker(game.shot_x,game.shot_y-5,1 ))
+		game.shot_x=DISABLED;
+
+    //check for collision with enemy, kill enemy if
+    for (int row=0; row<ENEMY_ROWS; row++) {
+        if (game.enemy_row_y[row]+6 >= game.shot_y && game.enemy_row_y[row]+6 < game.shot_y+7) {
+            for(int col = 0; col<ENEMY_COLUMNS; col++) {
+                if(game.shot_x >= game.enemy_x[row][col] && game.shot_x < game.enemy_x[row][col]+ENEMY_WIDTHS[row]) {
+                    game.enemy_x[row][col]=DISABLED;
+                    game.shot_x = DISABLED;
+                    game.alive--;
+					game.score+=(3-row)*10;
+                    return;
+                }
+            }
+        }
+    }
+
+    //check for collision with ufo
+   	if (game.ufo != DISABLED &&
+		game.shot_x>game.ufo &&
+		game.shot_x<game.ufo + 16 &&
+		game.shot_y<8) {
+
+		game.ufo = DISABLED;
+		game.score += 50;
+	}
+
+    game.shot_y -= 2;
+}
+
+
+
+
+void move_shots() {
+    for (int col = 0; col<ENEMY_COLUMNS; col++){
+		//No shot, maybe generate
+		if (game.shots_x[col] == DISABLED) {
+			for (int row = 0; row<ENEMY_ROWS; row++) {
+				if (game.enemy_x[row][col] != DISABLED) {	
+					if(getRandom()%(game.alive*20/((game.level/3)+1))==0) {
+						game.shots_x[col] = game.enemy_x[row][col]+5;
+						game.shots_y[col] = game.enemy_row_y[row]+0;
+					}
+				}
+			}
+			continue;
+		}
+
+		//moving out of bottm, end shot
+		if (game.shots_y[col] >= RESY) {
+			game.shots_x[col] = DISABLED;
+			return;
+		} 
+		//check for collision with bunker
+        if (check_bunker(game.shots_x[col],game.shots_y[col],-1))
+			game.shots_x[col]=DISABLED;
+
+		//check for collision with player	
+		if (game.shots_y[col] >= RESY-13 &&
+			game.shots_x[col] > game.player+1 &&
+			game.shots_x[col] < game.player+6) {
+
+			game.killed = true;
+		}
+		
+		//move shots down
+		game.shots_y[col] += 1;
+	}
+}
+
+void move_ufo() {
+	if (game.ufo == DISABLED) {
+		if ((getRandom()%UFO_PROB)==0) {
+			game.ufo = 0;
+		}
+		return;
+	}
+	if (game.ufo >= RESX){
+		game.ufo = DISABLED;
+		return;
+	}
+	game.ufo++;
+}
+
+void move_player() {
+    if(gpioGetValue(RB_BTN0)==0 && game.player > 0 ){
+        game.player-=1;
+    }
+    
+    if(gpioGetValue(RB_BTN1)==0 && game.player < RESX-8){
+        game.player+=1;
+    }
+    
+     if(gpioGetValue(RB_BTN4)==0 && game.shot_x == 255){
+        game.shot_x = game.player+4;
+        game.shot_y = POS_PLAYER_Y;
+    }
+}
+
+void move_enemy() {
+    if(game.move > 0){
+        game.move-=game.level/5+1;
+        return;
+    }
+    
+	game.step = !game.step;
+    for (int col = 0; col < ENEMY_COLUMNS; col++) {
+        for (int row = 0; row < ENEMY_ROWS; row++) {
+            char pos = game.enemy_x[row][(game.direction==1)?(ENEMY_COLUMNS-(col+1)):col];
+            if (pos != DISABLED) {
+                //Check collision with player
+                if((game.enemy_row_y[row]+8 >= POS_PLAYER_Y && pos+8 >= game.player && pos < game.player+8) ||
+						game.enemy_row_y[row]+8 >= POS_PLAYER_Y+8) {
+					for(int row=0; row<ENEMY_ROWS; row++) {
+						game.enemy_row_y[row] = 10 + (40/ENEMY_ROWS)*row;
+					}
+					game.killed = true;
+                }
+                check_bunker(pos,game.enemy_row_y[row]+8,-2);  
+			
+			    //Are we at the beginning or end? Direction change	
+                if((pos <=0 && game.direction != 1) ||
+                   (pos >=RESX-10 && game.direction == 1)){
+                    game.direction = (game.direction==1)?-1:1;
+                    for (int r = 0; r<ENEMY_ROWS; r++) {
+                        game.enemy_row_y[r]+=game.level>=23?4:2;
+                    }
+                    return;
+                }
+                game.enemy_x[row][(game.direction==1)?(ENEMY_COLUMNS-(col+1)):col] += game.direction;
+            }
+        }
+    }
+    
+    game.move = game.alive*2-1;
+}
+
+void draw_player() {
+    draw_sprite(TYPE_PLAYER, game.player, POS_PLAYER_Y);
+}
+
+void draw_ufo() {
+	if (game.ufo!=DISABLED)
+		draw_sprite(TYPE_UFO, game.ufo, POS_UFO_Y);
+}
+
+void draw_enemy() {
+    for (int row = 0; row<ENEMY_ROWS; row++) {
+        for (int col = 0; col<ENEMY_COLUMNS; col++) {
+            if (game.enemy_x[row][col] != DISABLED) {
+                draw_sprite(TYPE_ENEMY_C-row,game.enemy_x[row][col],game.enemy_row_y[row]);
+            }
+        }
+    }
+}
+    
+void draw_bunker() {
+	for (int b=0; b<BUNKERS; b++) {
+		memcpy(lcdBuffer+(RESX*1+BUNKER_X[b]),game.bunker+b,BUNKER_WIDTH);
+	}
+}
+
+void draw_shots() {
+    if (game.shot_x != 255) {
+        for (int length=0; length<=5; length++) {
+            lcdSetPixel(game.shot_x, game.shot_y+length, true);
+        }
+    }
+
+	for (int col = 0; col < ENEMY_COLUMNS; col++) {
+		if (game.shots_x[col] != DISABLED) {
+			for (int length=0; length<=5; length++) {
+				lcdSetPixel(game.shots_x[col], game.shots_y[col]+length,true);
+			}
+		}
+	}
+
+}
+
+void draw_status() {
+    for (int p = 0; p<game.alive; p++){
+        lcdSetPixel(p+1,1,true);
+    }
+}
+
+void draw_sprite(char type, char x, char y) {
+	font = &Font_Invaders;
+	switch(type) {
+		case TYPE_PLAYER:
+			DoChar(x,y-1,'P');
+			break;
+		case TYPE_ENEMY_A:
+			DoChar(x,y-1,game.step?'a':'A');
+			break;
+		case TYPE_ENEMY_B:
+			DoChar(x,y-1,game.step?'b':'B');
+			break;
+		case TYPE_ENEMY_C:
+			DoChar(x,y-1,game.step?'c':'C');
+			break;
+		case TYPE_UFO:
+			DoChar(x,y-1,'U');
+			break;
+	}
+}
+
+void draw_score() {
+	font = &Font_7x8;
+	DoInt(0,0,game.score);
+    
+	DoInt(RESX-8,0,game.rokets);
+    font = &Font_Invaders;
+	DoChar(RESX-16, 0, 'P');
+}
+
+
+void check_end() {
+    if (game.killed) {
+		game.rokets--;
+		delayms(500);
+        game.player = POS_PLAYER_X;
+        
+		for(int col=0; col<ENEMY_COLUMNS; col++) {
+			game.shots_x[col] = DISABLED;
+		}
+        game.killed = false;
+    }
+    if (game.alive == 0) {
+		delayms(500);
+		game.level++;
+		init_game();
+		screen_level();
+    }
+}
diff --git a/firmware/l0dable/loadable.ld b/firmware/l0dable/loadable.ld
index fb4d66c..b569c2f 100644
--- a/firmware/l0dable/loadable.ld
+++ b/firmware/l0dable/loadable.ld
@@ -1,5 +1,5 @@
 MEMORY
 {
-    sram(rwx): ORIGIN = 0x10002000 - 2048, LENGTH = 2048
+    sram(rwx): ORIGIN = 0x10002000 - 2548, LENGTH = 2548
 }
 INCLUDE ram.ld
diff --git a/firmware/l0dable/mandel.c b/firmware/l0dable/mandel.c
index d00503a..e47916f 100644
--- a/firmware/l0dable/mandel.c
+++ b/firmware/l0dable/mandel.c
@@ -5,7 +5,6 @@
 #include "lcd/render.h"
 #include "lcd/display.h"
 #include "lcd/allfonts.h"
-
 #include "usetable.h"
 
 #define FIXSIZE 25
@@ -38,7 +37,8 @@ void ram(void) {
 
 struct mb {
     long rmin, rmax, imin, imax;
-    bool dirty, dup, ddown, dleft, dright;
+    bool dirty, dup, ddown, dleft, dright, clickmark;
+    int presscount, presslimitzin, presslimitzout, zoomlevel, maxzoomin, maxzoomout;
 } mandel;
 
 void mandelInit() {
@@ -50,12 +50,19 @@ void mandelInit() {
     mandel.rmax = fixpt(1);
     mandel.imin = fixpt(-2);
     mandel.imax = fixpt(2);
-    
+    mandel.presscount = 0;
+    mandel.presslimitzin = 40;    
+    mandel.presslimitzout = 30;
+    mandel.zoomlevel = 0;
+    mandel.maxzoomin = 65;
+    mandel.maxzoomout = -12;
+
     mandel.dirty = true;
     mandel.dup = false;
     mandel.ddown = false;
     mandel.dleft = false;
     mandel.dright = false;
+    mandel.clickmark = false;
 }
 
 void mandelMove() {
@@ -67,7 +74,7 @@ void mandelMove() {
     
 	char key = getInputRaw();
     
-	 if (key == BTN_LEFT) {
+       if (key == BTN_LEFT) {
         mandel.imax -=is;
         mandel.imin -=is;
         mandel.dleft = true;
@@ -79,23 +86,41 @@ void mandelMove() {
         mandel.rmax += rs;
         mandel.rmin += rs;
         mandel.ddown = true;
-     } else if (key == BTN_UP) {
-        mandel.rmax -= rs;
-        mandel.rmin -= rs;
-        mandel.dup = true;
-     } else if (key == (BTN_ENTER +  BTN_UP)) {
+       } else if (key == BTN_UP) {
+	  mandel.rmax -= rs;
+	  mandel.rmin -= rs;
+	  mandel.dup = true;
+       } else if (key == BTN_ENTER) {
+	   if (mandel.presscount < mandel.presslimitzin) {
+	      mandel.presscount = mandel.presscount + 1;
+              }
+       } else if (key == BTN_NONE) {
+	   if(mandel.presscount > 0 ) {
+	      mandel.presscount = mandel.presscount - 1;
+              mandel.clickmark = true;
+	      }
+           if (mandel.presscount == 0 ) {
+              mandel.clickmark = false;
+              }
+       }
+       if (mandel.presscount > mandel.presslimitzout && mandel.clickmark && key == BTN_ENTER && mandel.zoomlevel >= mandel.maxzoomout) {
+	mandel.imin = mandel.imin - (mandel.imax-mandel.imin)/10;
+        mandel.imax = mandel.imax + (mandel.imax-mandel.imin)/10;
+        mandel.rmin = mandel.rmin -(mandel.rmax-mandel.rmin)/10;
+        mandel.rmax = mandel.rmax +(mandel.rmax-mandel.rmin)/10;
+        mandel.dirty = true;
+        delayms(10);
+        mandel.zoomlevel = mandel.zoomlevel - 1 ;
+	 }
+       else if (mandel.presscount == mandel.presslimitzin && key == BTN_ENTER && mandel.zoomlevel <= mandel.maxzoomin ) {
         mandel.imin = mandel.imin + (mandel.imax-mandel.imin)/10;
         mandel.imax = mandel.imax - (mandel.imax-mandel.imin)/10;
         mandel.rmin = mandel.rmin +(mandel.rmax-mandel.rmin)/10;
         mandel.rmax = mandel.rmax -(mandel.rmax-mandel.rmin)/10;
         mandel.dirty = true;
-     } else if (key == (BTN_ENTER + BTN_DOWN)) {
-		mandel.imin = mandel.imin - (mandel.imax-mandel.imin)/10;
-        mandel.imax = mandel.imax + (mandel.imax-mandel.imin)/10;
-        mandel.rmin = mandel.rmin -(mandel.rmax-mandel.rmin)/10;
-        mandel.rmax = mandel.rmax +(mandel.rmax-mandel.rmin)/10;
-        mandel.dirty = true;
-	 }
+        delayms(10);
+        mandel.zoomlevel = mandel.zoomlevel + 1 ;
+     } 
 }
 
 void mandelPixel(int x, int y) {
diff --git a/firmware/l0dable/mktable.pl b/firmware/l0dable/mktable.pl
index cc96e87..ad54420 100755
--- a/firmware/l0dable/mktable.pl
+++ b/firmware/l0dable/mktable.pl
@@ -18,6 +18,8 @@ my @symb;
 open(Q,"<","l0dable/EXPORTS") || die "$!";
 while(<Q>){
     chomp;s/\r$//;
+    next if /^#/;
+    next if /^\s*$/;
     push @symb,$_;
 };
 close(Q);
@@ -47,18 +49,18 @@ sub wanted {
 	open(F,"<",$_) || die;
 	while(<F>){
 		chomp;s/\r$//;
-		if(m!^[^(]* ([\w]+)\s*\(.*\);\s*(//.*)?$!){
+		if(m!^[^(]* ([\w]+)\s*\(.*\);\s*(//.*)?(/\*[^/]*\*/)?$!){
             $id=$1;
             s/$id/(*)/;
             s/;//;
             s!//.*!!;
 			$types{$id}="*($_)";
 			$files{$id}=$File::Find::name;
-		}elsif (m!^\s*extern\s[^(]* ([\w]+)\s*(\[\w*\]\s*)?;\s*(//.*)?$!){
+		}elsif (m!^\s*extern\s[^(]* ([\w]+)\s*(\[[^]]*\]\s*)?;\s*(//.*)?(/\*[^/]*\*/)?$!){
             $id=$1;
             s/extern //;
             my $star="*";
-            if( s/\[\w*\]//){
+            if( s/\[.*\]//){
                 $star="";
             };
             s/$id/*/;
diff --git a/firmware/l0dable/recvcard.c b/firmware/l0dable/recvcard.c
new file mode 100644
index 0000000..d19da8d
--- /dev/null
+++ b/firmware/l0dable/recvcard.c
@@ -0,0 +1,340 @@
+#include <sysinit.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdint.h>
+#include "basic/basic.h"
+#include "lcd/render.h"
+#include "lcd/allfonts.h"
+#include "basic/ecc.h"
+#include "funk/nrf24l01p.h"
+#include "filesystem/ff.h"
+#include "filesystem/diskio.h"
+#include "funk/filetransfer.h"
+#include "lcd/print.h"
+#include <string.h>
+#include "funk/nrf24l01p.h"
+#include "funk/filetransfer.h"
+#include "funk/rftransfer.h"
+#include "basic/basic.h"
+#include "basic/xxtea.h"
+#include "filesystem/ff.h"
+#include "lcd/print.h"
+#include "usetable.h"
+
+
+uint8_t mac[5] = {1,2,3,2,1};
+
+void ram(void)
+{
+    if( sendKeys() )
+        return;
+
+    char priv[42];
+    UINT readbytes;
+    FIL file;
+
+    if( f_open(&file, "priv.key", FA_OPEN_EXISTING|FA_READ) ){
+        return;
+    }
+    if( f_read(&file, priv, 41, &readbytes) || readbytes != 41 ){
+        return;
+    }
+    f_close(&file);
+    priv[41] = 0;
+
+    uint8_t done = 0;
+    uint8_t key;
+    uint8_t k1[16], k2[16], rx[4*NUMWORDS], ry[4*NUMWORDS];
+ 
+    while( !done ){
+        lcdClear();
+        lcdPrintln("Receiving file");
+        lcdPrintln("Down=Abort");
+        lcdRefresh();
+        key = getInput();
+        delayms(20);
+        if( key == BTN_DOWN ){
+            return -1;
+        }
+        if( receiveR(rx,ry) )
+            continue;
+        lcdPrintln("Creating key");
+        lcdRefresh();
+        ECIES_decryptkeygen(rx, ry, k1, k2, priv);
+        if( filetransfer_receive(mac,(uint32_t*)k1) < 0 )
+            continue;
+        lcdPrintln("Right=OK");
+        lcdPrintln("Left=Retry");
+        lcdPrintln("Down=Abort");
+        lcdRefresh();
+
+        while(1){
+            key = getInput();
+            delayms(20);
+            if( key == BTN_LEFT ){
+                break;
+            }else if( key == BTN_RIGHT ){
+                done = 1;
+                break;
+            }else if( key == BTN_DOWN ){
+                return -1;
+            }
+        }
+    }
+}
+
+void sendPublicKey(void)
+{
+    uint8_t exp[2 + 4*NUMWORDS + 2];
+    char buf[42];
+    UINT readbytes;
+    FIL file;
+
+    if( f_open(&file, "pubx.key", FA_OPEN_EXISTING|FA_READ) ){
+        return;
+    }
+    if( f_read(&file, buf, 41, &readbytes) || readbytes != 41 ){
+        return;
+    }
+    f_close(&file);
+    buf[41] = 0;
+
+    exp[0] = 'P';
+    bitstr_parse_export((char*)exp+2, buf);
+    exp[1] = 'X';
+    nrf_snd_pkt_crc(32, exp);
+    delayms(10);
+
+    if( f_open(&file, "puby.key", FA_OPEN_EXISTING|FA_READ) ){
+        return;
+    }
+    if( f_read(&file, buf, 41, &readbytes) || readbytes != 41 ){
+        return;
+    }
+    f_close(&file);
+    buf[41] = 0;
+
+    exp[1] = 'Y';
+    bitstr_parse_export((char*)exp+2, buf);
+    nrf_snd_pkt_crc(32, exp);
+    delayms(10);
+}
+
+
+int receiveKey(uint8_t type, uint8_t *x, uint8_t *y)
+{
+    uint8_t buf[32];
+    uint8_t n;
+    
+    n = nrf_rcv_pkt_time(1000, 32, buf);
+    if( n == 32 && buf[0] == type && buf[1] == 'X' ){
+        for(int i=0; i<NUMWORDS*4; i++)
+            x[i] = buf[i+2];
+        n = nrf_rcv_pkt_time(100, 32, buf);
+        if( n == 32 && buf[0] ==type && buf[1] == 'Y' ){
+            for(int i=0; i<NUMWORDS*4; i++)
+                y[i] = buf[i+2];
+            return 0;
+        }
+    }
+    return -1;
+}
+
+int receiveR(uint8_t *rx, uint8_t *ry)
+{
+    return receiveKey('R',rx,ry);
+}
+
+void sendMac(void)
+{
+    uint8_t buf[32];
+    buf[0] = 'M';
+    buf[1] = 'C';
+    buf[2] = mac[0];
+    buf[3] = mac[1];
+    buf[4] = mac[2];
+    buf[5] = mac[3];
+    buf[6] = mac[4];
+    nrf_snd_pkt_crc(32, buf);
+    delayms(10);
+}
+
+int sendKeys(void)
+{
+    uint8_t done = 0;
+    char key;
+    while( !done ){
+        lcdClear();
+        lcdPrintln("Sending PUBKEY");lcdRefresh();
+        sendPublicKey();
+        sendMac();
+        lcdPrintln("Done");
+        lcdPrintln("Right=OK");
+        lcdPrintln("Left=Retry");
+        lcdPrintln("Down=Abort");
+        lcdRefresh();
+
+        while(1){
+            key = getInput();
+            delayms(20);
+            if( key == BTN_LEFT ){
+                break;
+            }else if( key == BTN_RIGHT ){
+                done = 1;
+                break;
+            }else if( key == BTN_DOWN ){
+                return -1;
+            }
+        }
+    }
+    return 0;
+}
+
+int filetransfer_receive(uint8_t *mac, uint32_t const k[4])
+{
+    uint8_t buf[MAXSIZE+1];
+    uint16_t size;
+    uint8_t n;
+
+    UINT written = 0;
+    FIL file;
+    FRESULT res;
+    //uint8_t macbuf[5];
+    //nrf_get_rx_max(0,5,macbuf);
+
+    uint8_t metadata[32];
+
+    //nrf_set_rx_mac(0, 32, 5, mac);
+    n = nrf_rcv_pkt_time_encr(3000, 32, metadata, k);
+    if( n != 32 )
+        return 1;       //timeout
+    //nrf_set_rx_mac(0, 32, 5, macbuf);
+    //lcdPrintln("got meta"); lcdRefresh();
+    metadata[19] = 0; //enforce termination
+    size = (metadata[20] << 8) | metadata[21];
+
+    if( size > MAXSIZE ) {lcdPrintln("too big"); lcdRefresh(); while(1);}
+    if( size > MAXSIZE ) return 1; //file to big
+    //if(fileexists(metadata)) return 1;   //file already exists
+    
+    //lcdPrint("open"); lcdPrintln((const char*)metadata); lcdRefresh();
+    res = f_open(&file, (const char*)metadata, FA_OPEN_ALWAYS|FA_WRITE);
+
+    //lcdPrintln("file opened"); lcdRefresh();
+    if( res ) {lcdPrintln("res"); lcdPrint(f_get_rc_string(res)); lcdRefresh(); while(1);}
+    if( res )
+        return res;
+    
+    uint16_t wordcount = (size+3)/4;
+    
+    //nrf_set_rx_mac(0, 32, 5, mac);
+    //lcdPrintln("get file"); lcdRefresh();
+    int fres = rftransfer_receive(buf, wordcount*4, 1000);
+    if( fres == -1 ){
+        lcdPrintln("checksum wrong");
+    }else if( fres == -2 ){
+        lcdPrintln("timeout");
+    }else{
+        //lcdPrintln("got file");
+    }
+    lcdRefresh();
+    if( fres < 0 )
+        return 1;
+    //nrf_set_rx_mac(0, 32, 5, macbuf);
+
+    xxtea_decode_words((uint32_t *)buf, wordcount, k);
+    
+    res = f_write(&file, buf, size, &written);
+    f_close(&file);
+    if( res )
+        return res;
+    if( written != size )
+        return 1;           //error while writing
+    lcdClear();
+    lcdPrintln("Received"); lcdPrintln((const char*)metadata); lcdRefresh();
+
+    return 0;
+}
+
+#define MAXPACKET   32
+int16_t rftransfer_receive(uint8_t *buffer, uint16_t maxlen, uint16_t timeout)
+{
+    uint8_t buf[MAXPACKET];
+    uint8_t state = 0;
+    uint16_t pos = 0, seq = 0, size = 0, rand = 0, crc = 0;
+    int n,i;
+    unsigned int currentTick = systickGetTicks();
+    unsigned int startTick = currentTick;
+    
+    while(systickGetTicks() < (startTick+timeout) ){//this fails if either overflows
+        n = nrf_rcv_pkt_time(1000, MAXPACKET, buf);
+        switch(state){
+            case 0:
+                if( n == 32 && buf[0] == 'L' ){
+                    size = (buf[1] << 8) | buf[2];
+                    rand =  (buf[3] << 8) | buf[4];
+                    seq = 0;
+                    pos = 0;
+                    if( size <= maxlen ){
+                        //lcdClear();
+                        //lcdPrint("got l="); lcdPrintInt(size);
+                        //lcdPrintln(""); lcdRefresh();
+                        state = 1;
+                    }
+                }
+            break;
+            case 1:
+                if( n == 32 && buf[0] == 'D' && ((buf[3]<<8)|buf[4])==rand ){
+                    //lcdPrint("got d"); lcdRefresh();
+                    if( seq == ((buf[1]<<8)|buf[2]) ){
+                        //lcdPrintln(" in seq"); lcdRefresh();
+                            for(i=5; i<n-2 && pos<size; i++,pos++){
+                                buffer[pos] = buf[i];
+                            }
+                            seq++;
+                    }
+                }
+                if( pos == size ){
+                    //lcdPrintln("got all"); lcdRefresh();
+                    crc = crc16(buffer, size);
+                    state = 2;
+                }
+            break;
+            case 2:
+                if( n == 32 && buf[0] == 'C' && ((buf[3]<<8)|buf[4])==rand){
+                    //lcdPrint("got crc"); lcdRefresh();
+                    if( crc == ((buf[1]<<8)|buf[2]) ){
+                        //lcdPrintln(" ok"); lcdRefresh();
+                        return size;
+                    }else{
+                        //lcdPrintln(" nok"); lcdRefresh();
+                        return -1;
+                    }
+                }
+            break;
+        };
+    }
+    //lcdPrintln("Timeout"); lcdRefresh();
+    return -2;
+}
+#if 0
+int ECIES_decryptkeygen(uint8_t *rx, uint8_t *ry,
+             uint8_t k1[16], uint8_t k2[16], const char *privkey)
+{
+  elem_t Rx, Ry, Zx, Zy;
+  exp_t d;
+  bitstr_import(Rx, (char*)rx);
+  bitstr_import(Ry, (char*)ry);
+  if (ECIES_embedded_public_key_validation(Rx, Ry) < 0)
+    return -1;
+  bitstr_parse(d, privkey);
+  point_copy(Zx, Zy, Rx, Ry);
+  point_mult(Zx, Zy, d);
+  point_double(Zx, Zy);                             /* cofactor h = 2 on B163 */
+  if (point_is_zero(Zx, Zy))
+    return -1;
+  ECIES_kdf((char*)k1,(char*) k2, Zx, Rx, Ry);
+  return 0;
+}
+#endif
diff --git a/firmware/l0dable/sendcard.c b/firmware/l0dable/sendcard.c
new file mode 100644
index 0000000..8bcf110
--- /dev/null
+++ b/firmware/l0dable/sendcard.c
@@ -0,0 +1,284 @@
+#include <sysinit.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdint.h>
+#include "basic/basic.h"
+#include "lcd/render.h"
+#include "lcd/allfonts.h"
+#include "basic/ecc.h"
+#include "funk/nrf24l01p.h"
+#include "filesystem/ff.h"
+#include "filesystem/diskio.h"
+#include "funk/filetransfer.h"
+#include "lcd/print.h"
+#include <string.h>
+#include "funk/nrf24l01p.h"
+#include "funk/filetransfer.h"
+#include "funk/rftransfer.h"
+#include "basic/basic.h"
+#include "basic/xxtea.h"
+#include "filesystem/ff.h"
+#include "funk/rftransfer.h"
+#include "funk/nrf24l01p.h"
+#include <basic/basic.h>
+#include <basic/random.h>
+#include <core/systick/systick.h>
+//#include <lcd/print.h>
+
+#include "usetable.h"
+
+//#include "lcd/print.h"
+
+
+
+uint8_t mac[5] = {1,2,3,2,1};
+
+void ram(void)
+{
+    char file[13];
+    selectFile(file,"TXT");
+    sendFile(file); 
+}
+
+void sendR(uint8_t *rx, uint8_t *ry)
+{
+    uint8_t exp[2 + 4*NUMWORDS + 2];
+    exp[0] = 'R';
+    for(int i=0; i<4*NUMWORDS; i++)
+        exp[2+i] = rx[i];
+    exp[1] = 'X';
+    nrf_snd_pkt_crc(32, exp);
+    delayms(10);
+    exp[1] = 'Y';
+    for(int i=0; i<4*NUMWORDS; i++)
+        exp[2+i] = ry[i]; 
+    nrf_snd_pkt_crc(32, exp);
+    delayms(10);
+}
+
+int receiveKey(uint8_t type, uint8_t *x, uint8_t *y)
+{
+    uint8_t buf[32];
+    uint8_t n;
+    
+    n = nrf_rcv_pkt_time(1000, 32, buf);
+    if( n == 32 && buf[0] == type && buf[1] == 'X' ){
+        for(int i=0; i<NUMWORDS*4; i++)
+            x[i] = buf[i+2];
+        n = nrf_rcv_pkt_time(100, 32, buf);
+        if( n == 32 && buf[0] ==type && buf[1] == 'Y' ){
+            for(int i=0; i<NUMWORDS*4; i++)
+                y[i] = buf[i+2];
+            return 0;
+        }
+    }
+    return -1;
+}
+
+int receivePublicKey(uint8_t *px, uint8_t *py)
+{
+    return receiveKey('P',px,py);
+}
+
+void sendMac(void)
+{
+    uint8_t buf[32];
+    buf[0] = 'M';
+    buf[1] = 'C';
+    buf[2] = mac[0];
+    buf[3] = mac[1];
+    buf[4] = mac[2];
+    buf[5] = mac[3];
+    buf[6] = mac[4];
+    nrf_snd_pkt_crc(32, buf);
+    delayms(10);
+}
+
+int receiveMac(uint8_t *mac)
+{
+    uint8_t buf[32]; 
+    uint8_t n;
+
+    n = nrf_rcv_pkt_time(100, 32, buf);
+    if( n == 32 && buf[0] == 'M' && buf[1] == 'C' ){
+        for(int i=0; i<5; i++)
+            mac[i] = buf[i+2];
+        return 0;
+    }
+    return -1;
+}
+
+int receiveKeys(uint8_t *px, uint8_t *py, uint8_t *mac)
+{
+    uint8_t done = 0;
+    char key;
+    while( !done ){
+        lcdClear();
+        lcdPrintln("Recv. PUBKEY");
+        lcdPrintln("Down=Abort");
+        lcdRefresh();
+        key = getInput();
+        delayms(20);
+        if( key == BTN_DOWN ){
+            return -1;
+        }
+        if( receivePublicKey(px,py) )
+            continue;
+        if( receiveMac(mac) )
+            continue;
+        lcdClear();
+        lcdPrintln("Got PUBKEY"); lcdRefresh(); 
+        lcdPrintln("Hash:");
+        lcdPrintln("Right=OK");
+        lcdPrintln("Left=Retry");
+        lcdPrintln("Down=Abort");
+        lcdRefresh();
+        while(1){
+            key = getInput();
+            delayms(20);
+            if( key == BTN_LEFT ){
+                break;
+            }else if( key == BTN_RIGHT ){
+                done = 1;
+                break;
+            }else if( key == BTN_DOWN ){
+                return -1;
+            }
+        }
+    }
+    return 0;
+}
+
+
+void sendFile(char *filename)
+{
+    uint8_t px[4*NUMWORDS];
+    uint8_t py[4*NUMWORDS];
+    uint8_t mac[5];
+    if( receiveKeys(px, py, mac) )
+        return;
+    
+    uint8_t done = 0;
+    uint8_t key;
+
+    uint8_t k1[16], k2[16], rx[4*NUMWORDS], ry[4*NUMWORDS];
+    
+    lcdClear();
+    lcdPrintln("Creating key"); lcdRefresh();
+    ECIES_encyptkeygen(px, py, k1, k2, rx, ry);
+    
+    while( !done ){
+        lcdPrintln("Sending file");lcdRefresh();
+        sendR(rx,ry);
+        delayms(3000);
+        filetransfer_send((uint8_t*)filename, 0, mac, (uint32_t*)k1);
+        lcdPrintln("Done");
+        lcdPrintln("Right=OK");
+        lcdPrintln("Left=Retry");
+        lcdRefresh();
+        while(1){
+            key = getInput();
+            delayms(20);
+            if( key == BTN_LEFT ){
+                break;
+            }else if( key == BTN_RIGHT ){
+                done = 1;
+                break;
+            }
+        } 
+        lcdClear();
+    }
+}
+//TODO: use a proper MAC to sign the message
+int filetransfer_send(uint8_t *filename, uint16_t size,
+                uint8_t *mac, uint32_t const k[4])
+{
+    uint8_t buf[MAXSIZE];
+    FIL file;
+    FRESULT res;
+    UINT readbytes;
+
+
+    if( size > MAXSIZE )
+        return 1;           //File to big
+ 
+    res=f_open(&file, (const char*)filename, FA_OPEN_EXISTING|FA_READ);
+    if( res )
+        return res;
+
+    //res = f_read(&file, (char *)buf, size, &readbytes);
+    for(uint16_t i=0; i<MAXSIZE; i++)
+        buf[i] = 0;
+
+    res = f_read(&file, (char *)buf, MAXSIZE, &readbytes);
+    size = readbytes;
+
+    if( res )
+        return res;
+    if( size != readbytes)
+        return 1;           //Error while reading
+    
+    uint16_t wordcount = (size+3)/4;
+    //uint8_t macbuf[5];
+
+    uint8_t metadata[32];
+    if( strlen((char*)filename) < 20 )
+        strcpy((char*)metadata, (char*)filename);
+    else
+        return 1;           //File name too long
+    metadata[20] = size >> 8;
+    metadata[21] = size & 0xFF;
+
+    //nrf_get_tx_max(5,macbuf);
+
+    //nrf_set_tx_mac(5, mac); 
+    nrf_snd_pkt_crc_encr(32, metadata, k); 
+    delayms(20);
+    xxtea_encode_words((uint32_t *)buf, wordcount, k);
+    rftransfer_send(wordcount*4, buf);
+    //nrf_set_tx_mac(5, macbuf);
+    return 0;
+}
+
+#define MAXPACKET   32
+void rftransfer_send(uint16_t size, uint8_t *data)
+{
+    uint8_t buf[MAXPACKET];
+    buf[0] = 'L';
+    buf[1] = size >> 8;
+    buf[2] = size & 0xFF;
+
+    uint16_t rand = getRandom() & 0xFFFF;
+    buf[3] = rand >> 8;
+    buf[4] = rand & 0xFF;
+
+    nrf_snd_pkt_crc(32,buf);     //setup packet
+    delayms(20);
+    uint16_t index = 0;
+    uint8_t i;
+    uint16_t crc = crc16(data,size);
+
+    while(size){
+        buf[0] = 'D';
+        buf[1] = index >> 8;
+        buf[2] = index & 0xFF;
+        buf[3] = rand >> 8;
+        buf[4] = rand & 0xFF;
+        for(i=5; i<MAXPACKET-2 && size>0; i++,size--){
+            buf[i] = *data++;
+        }
+        index++;
+        nrf_snd_pkt_crc(32,buf);     //data packet
+        delayms(20);
+    }
+
+    buf[0] = 'C';
+    buf[1] = crc >> 8;
+    buf[2] = crc & 0xFF;
+    buf[3] = rand >> 8;
+    buf[4] = rand & 0xFF;
+    nrf_snd_pkt_crc(32,buf);     //setup packet
+    delayms(20);
+}
+
diff --git a/firmware/l0dable/system-include-hack.h b/firmware/l0dable/system-include-hack.h
new file mode 100644
index 0000000..4f8f217
--- /dev/null
+++ b/firmware/l0dable/system-include-hack.h
@@ -0,0 +1,3 @@
+size_t strlen(const char *s);
+char * strcpy(char * restrict dst, const char * restrict src);
+void * memcpy(void *dst, const void *src, size_t len);
diff --git a/firmware/lcd/decoder.c b/firmware/lcd/decoder.c
index 7073ee4..539b8d2 100644
--- a/firmware/lcd/decoder.c
+++ b/firmware/lcd/decoder.c
@@ -2,10 +2,10 @@
 #include <render.h>
 
 	// Local function: Get next nibble.
-	int ctr=0;  // offset for next nibble
-	int hilo=0; // 0= high nibble next, 1=low nibble next
+	static int ctr=0;  // offset for next nibble
+	static int hilo=0; // 0= high nibble next, 1=low nibble next
 	const uint8_t * data;
-	char gnn(){ // Get next nibble
+	static char gnn(){ // Get next nibble
 		static int byte;
 		int val;
 		if(hilo==1)
diff --git a/firmware/lcd/display.c b/firmware/lcd/display.c
index 5922e8e..d3fb731 100644
--- a/firmware/lcd/display.c
+++ b/firmware/lcd/display.c
@@ -216,6 +216,7 @@ void lcdDisplay(void) {
 
     lcd_deselect();
 }
+void lcdRefresh() __attribute__ ((weak, alias ("lcdDisplay")));
 
 inline void lcdInvert(void) {
     GLOBAL(lcdinvert)=!GLOBAL(lcdinvert);
diff --git a/firmware/lcd/print.c b/firmware/lcd/print.c
index 6f6ac75..46adf84 100644
--- a/firmware/lcd/print.c
+++ b/firmware/lcd/print.c
@@ -53,9 +53,6 @@ void lcdClear(){
   lcdFill(0);
 };
 
-void lcdRefresh(){
-    lcdDisplay();
-};
 
 void lcdMoveCrsr(signed int dx,signed int dy){
     x+=dx;
diff --git a/firmware/loadable/mandelbrot.c b/firmware/loadable/mandelbrot.c
index 2d9ae16..f66b691 100644
--- a/firmware/loadable/mandelbrot.c
+++ b/firmware/loadable/mandelbrot.c
@@ -36,7 +36,8 @@ void ram(void) {
 
 struct mb {
     long rmin, rmax, imin, imax;
-    bool dirty, dup, ddown, dleft, dright;
+    bool dirty, dup, ddown, dleft, dright, clickmark;
+    int count, limitZIn, limitZOut;
 } mandel;
 
 void mandelInit() {
@@ -48,12 +49,16 @@ void mandelInit() {
     mandel.rmax = fixpt(1);
     mandel.imin = fixpt(-2);
     mandel.imax = fixpt(2);
-    
+    mandel.count = 0;
+    mandel.limitZIn = 40;    
+    mandel.limitZOut = 30;
+
     mandel.dirty = true;
     mandel.dup = false;
     mandel.ddown = false;
     mandel.dleft = false;
     mandel.dright = false;
+    mandel.clickmark = false;
 }
 
 void mandelMove() {
@@ -65,7 +70,7 @@ void mandelMove() {
     
 	char key = getInputRaw();
     
-	 if (key == BTN_LEFT) {
+       if (key == BTN_LEFT) {
         mandel.imax -=is;
         mandel.imin -=is;
         mandel.dleft = true;
@@ -77,23 +82,37 @@ void mandelMove() {
         mandel.rmax += rs;
         mandel.rmin += rs;
         mandel.ddown = true;
-     } else if (key == BTN_UP) {
-        mandel.rmax -= rs;
-        mandel.rmin -= rs;
-        mandel.dup = true;
-     } else if (key == (BTN_ENTER +  BTN_UP)) {
-        mandel.imin = mandel.imin + (mandel.imax-mandel.imin)/10;
-        mandel.imax = mandel.imax - (mandel.imax-mandel.imin)/10;
-        mandel.rmin = mandel.rmin +(mandel.rmax-mandel.rmin)/10;
-        mandel.rmax = mandel.rmax -(mandel.rmax-mandel.rmin)/10;
-        mandel.dirty = true;
-     } else if (key == (BTN_ENTER + BTN_DOWN)) {
-		mandel.imin = mandel.imin - (mandel.imax-mandel.imin)/10;
+       } else if (key == BTN_UP) {
+	  mandel.rmax -= rs;
+	  mandel.rmin -= rs;
+	  mandel.dup = true;
+       } else if (key == BTN_ENTER) {
+	   if (mandel.count < mandel.limitZIn) {
+	      mandel.count = mandel.count + 1;
+              }
+       } else if (key == BTN_NONE) {
+	   if(mandel.count > 0 ) {
+	      mandel.count = mandel.count - 1;
+              mandel.clickmark = true;
+	      }
+           if (mandel.count == 0 ) {
+              mandel.clickmark = false;
+              }
+       }
+       if (mandel.count > mandel.limitZOut && mandel.clickmark && key == BTN_ENTER) {
+	mandel.imin = mandel.imin - (mandel.imax-mandel.imin)/10;
         mandel.imax = mandel.imax + (mandel.imax-mandel.imin)/10;
         mandel.rmin = mandel.rmin -(mandel.rmax-mandel.rmin)/10;
         mandel.rmax = mandel.rmax +(mandel.rmax-mandel.rmin)/10;
         mandel.dirty = true;
 	 }
+       if (mandel.count == mandel.limitZIn && key == BTN_ENTER) {
+        mandel.imin = mandel.imin + (mandel.imax-mandel.imin)/10;
+        mandel.imax = mandel.imax - (mandel.imax-mandel.imin)/10;
+        mandel.rmin = mandel.rmin +(mandel.rmax-mandel.rmin)/10;
+        mandel.rmax = mandel.rmax -(mandel.rmax-mandel.rmin)/10;
+        mandel.dirty = true;
+     } 
 }
 
 void mandelPixel(int x, int y) {
diff --git a/firmware/loadable/spaceinvaders.c b/firmware/loadable/spaceinvaders.c
index c4f6457..fbcf38a 100644
--- a/firmware/loadable/spaceinvaders.c
+++ b/firmware/loadable/spaceinvaders.c
@@ -1,15 +1,13 @@
 #include <sysinit.h>
+#include <string.h>
 
 #include "basic/basic.h"
+#include "basic/random.h"
 
 #include "lcd/render.h"
 #include "lcd/display.h"
 #include "lcd/allfonts.h"
 
-void ReinvokeISP(void);
-void EnableWatchdog(uint32_t ms);
-void delayms(uint32_t ms);
-
 /**************************************************************************/
 #define POS_PLAYER_Y 60
 #define POS_PLAYER_X RESX/2-3
@@ -20,11 +18,11 @@ void delayms(uint32_t ms);
 
 #define UFO_PROB 1024
 
-#define TYPE_PLAYER 1
+#define TYPE_PLAYER  1
 #define TYPE_ENEMY_A 3
 #define TYPE_ENEMY_B 2
 #define TYPE_ENEMY_C 4
-#define TYPE_UFO 5
+#define TYPE_UFO     5
 
 #define BUNKERS 3
 #define BUNKER_WIDTH  10
@@ -52,16 +50,19 @@ struct gamestate {
 char key;
 
 void init_game();
+void init_enemy();
 void check_end();
 void move_ufo();
+void move_shot();
 void move_shots();
 void move_player();
-void move_enemay();
+void move_enemy();
 void draw_score();
 void draw_bunker();
 void draw_player();
 void draw_enemy();
 void draw_shots();
+void draw_sprite(char type, char x, char y);
 void draw_ufo();
 void screen_intro();
 void screen_gameover();
@@ -150,14 +151,20 @@ void init_game(void) {
 	game.shot_y = 0;
 	game.alive = ENEMY_ROWS*ENEMY_COLUMNS;
 	game.move = 0;
-	game.direction = -1;
-	game.lastcol = ENEMY_COLUMNS-1;
+	if (getRandom()%2 == 0) {
+		game.direction = -1;
+		game.lastcol = ENEMY_COLUMNS-1;
+	} else {
+		game.direction = 1;
+		game.lastcol = 0;
+	}
 	game.killed = 0;
 	game.step = false;
 	game.ufo = DISABLED;
+	game.score = 0;
 	init_enemy();
 	
-	for (char col=0; col<ENEMY_COLUMNS; col++){
+	for (int col=0; col<ENEMY_COLUMNS; col++){
 	   game.shots_x[col] = DISABLED;
    	}
 
@@ -217,21 +224,8 @@ void move_shot() {
             game.shot_x = DISABLED;
             return;
     } 
-    
-    //check for collision with bunker
-//	for (int b=0; b<BUNKERS; b++) {
-//		if (game.shot_x>BUNKER_X[BUNKERS-1-b] &&
-//			game.shot_x<BUNKER_X[BUNKERS-1-b]+BUNKER_WIDTH &&
-//			game.shot_y<RESY-8 &&
-//			game.shot_y>RESY-16) {
-//			int offset = BUNKER_WIDTH - (game.shot_x-BUNKER_X[BUNKERS-1-b]);	
-//			if (game.bunker[b][offset]!=0) {
-//				game.bunker[b][offset]&=game.bunker[b][offset]<<1;
-//				game.shot_x=DISABLED;
-//			}
-//		}
-//	}
-    if (check_bunker(game.shot_x,game.shot_y-5,1 ))
+
+   if (check_bunker(game.shot_x,game.shot_y-5,1 ))
 		game.shot_x=DISABLED;
 
     //check for collision with enemy, kill enemy if
@@ -242,12 +236,13 @@ void move_shot() {
                     game.enemy_x[row][col]=DISABLED;
                     game.shot_x = DISABLED;
                     game.alive--;
-					game.score++;
+					game.score+=(3-row)*10;
                     return;
                 }
             }
         }
     }
+
     //check for collision with ufo
    	if (game.ufo != DISABLED &&
 		game.shot_x>game.ufo &&
@@ -255,7 +250,7 @@ void move_shot() {
 		game.shot_y<8) {
 
 		game.ufo = DISABLED;
-		game.score += 5;
+		game.score += 50;
 	}
 
     game.shot_y -= 2;
@@ -265,10 +260,10 @@ void move_shot() {
 
 
 void move_shots() {
-    for (char col = 0; col<ENEMY_COLUMNS; col++){
+    for (int col = 0; col<ENEMY_COLUMNS; col++){
 		//No shot, maybe generate
 		if (game.shots_x[col] == DISABLED) {
-			for (char row = 0; row<ENEMY_ROWS; row++) {
+			for (int row = 0; row<ENEMY_ROWS; row++) {
 				if (game.enemy_x[row][col] != DISABLED) {	
 					if(getRandom()%(game.alive*20/((game.level/3)+1))==0) {
 						game.shots_x[col] = game.enemy_x[row][col]+5;
@@ -288,20 +283,7 @@ void move_shots() {
         if (check_bunker(game.shots_x[col],game.shots_y[col],-1))
 			game.shots_x[col]=DISABLED;
 
-//		for (int b=0; b<BUNKERS; b++) {
-//			if (game.shots_x[col]>BUNKER_X[BUNKERS-1-b] &&
-//					game.shots_x[col]<BUNKER_X[BUNKERS-1-b]+BUNKER_WIDTH &&
-//					game.shots_y[col]<RESY-8 &&
-//					game.shots_y[col]>RESY-16) {
-//				int offset = BUNKER_WIDTH - (game.shots_x[col]-BUNKER_X[BUNKERS-1-b])-1;	
-//				if (game.bunker[b][offset]!=0) {
-//					game.bunker[b][offset]&=game.bunker[b][offset]>>1;
-//					game.shots_x[col]=DISABLED;
-//				}
-//			}
-//		}
-		//check for collision with player
-		
+		//check for collision with player	
 		if (game.shots_y[col] >= RESY-13 &&
 			game.shots_x[col] > game.player+1 &&
 			game.shots_x[col] < game.player+6) {
@@ -363,25 +345,12 @@ void move_enemy() {
 					game.killed = true;
                 }
                 check_bunker(pos,game.enemy_row_y[row]+8,-2);  
-				//check for collision with bunker, dirty
-			//	for (int b=0; b<BUNKERS; b++) {
-			//		if (pos>=BUNKER_X[BUNKERS-1-b] &&
-			//				pos<=BUNKER_X[BUNKERS-1-b]+BUNKER_WIDTH &&
-			//				game.enemy_row_y[row]+8<RESY-8 &&
-			//				game.enemy_row_y[row]+8>RESY-16) {
-			//			int offset = BUNKER_WIDTH - (pos-BUNKER_X[BUNKERS-1-b]);	
-			//			if (game.bunker[b][offset]!=0) {
-			//				game.bunker[b][offset]&=game.bunker[b][offset]>>2;
-			//			}
-			//		}
-			//	}
-
-
+			
 			    //Are we at the beginning or end? Direction change	
                 if((pos <=0 && game.direction != 1) ||
                    (pos >=RESX-10 && game.direction == 1)){
                     game.direction = (game.direction==1)?-1:1;
-                    for (char r = 0; r<ENEMY_ROWS; r++) {
+                    for (int r = 0; r<ENEMY_ROWS; r++) {
                         game.enemy_row_y[r]+=game.level>=23?4:2;
                     }
                     return;
@@ -395,7 +364,6 @@ void move_enemy() {
 }
 
 void draw_player() {
-    //draw_sprite(50, 20);
     draw_sprite(TYPE_PLAYER, game.player, POS_PLAYER_Y);
 }
 
@@ -427,7 +395,7 @@ void draw_shots() {
         }
     }
 
-	for (char col = 0; col < ENEMY_COLUMNS; col++) {
+	for (int col = 0; col < ENEMY_COLUMNS; col++) {
 		if (game.shots_x[col] != DISABLED) {
 			for (int length=0; length<=5; length++) {
 				lcdSetPixel(game.shots_x[col], game.shots_y[col]+length,true);