raw input, mandelbrot works again

modules/mandelbrot2.c

@@ -0,0 +1,135 @@
+#include <sysinit.h>
+
+#include "basic/basic.h"
+
+#include "lcd/render.h"
+#include "lcd/display.h"
+#include "lcd/allfonts.h"
+
+#define FIXSIZE 25
+#define mul(a,b) ((((long long)a)*(b))>>FIXSIZE)
+#define fixpt(a) ((long)(((a)*(1<<FIXSIZE))))
+#define integer(a) (((a)+(1<<(FIXSIZE-1)))>>FIXSIZE)
+
+#define ZOOM_RATIO 0.90
+#define ITERATION_MAX 150
+
+void blink(){
+    gpioSetValue (RB_LED1, CFG_LED_OFF); 
+    delayms(100);
+    gpioSetValue (RB_LED1, CFG_LED_ON); 
+    delayms(100);
+    gpioSetValue (RB_LED1, CFG_LED_OFF); 
+}
+
+struct mb {
+    long rmin, rmax, imin, imax;
+    bool dirty;
+} mandel;
+
+void mandelInit() {
+    //mandel.rmin = -2.2*0.9;
+    //mandel.rmax = 1.0*0.9;
+    //mandel.imin = -2.0*0.9;
+    //mandel.imax = 2.0*0.9;
+    mandel.rmin = fixpt(-2);
+    mandel.rmax = fixpt(1);
+    mandel.imin = fixpt(-2);
+    mandel.imax = fixpt(2);
+    
+    mandel.dirty = true;
+}
+
+void mandelMove() {
+    long delta_r = (mandel.rmax - mandel.rmin)/10;
+    long delta_i = (mandel.imax - mandel.imin)/10;
+    char key = getInputRaw();
+    
+    if(key == BTN_LEFT) {
+        mandel.imax -= delta_i;
+        mandel.imin -= delta_i;
+        mandel.dirty = true;
+    } else if (key == BTN_RIGHT) {
+        mandel.imax += delta_i;
+        mandel.imin += delta_i;
+        mandel.dirty = true;
+     } else if (key == BTN_DOWN) {
+        mandel.rmax += delta_r;
+        mandel.rmin += delta_r;
+         mandel.dirty = true;
+     } else if (key == BTN_UP) {
+        mandel.rmax -= delta_r;
+        mandel.rmin -= delta_r;
+         mandel.dirty = true;
+     } else if (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 mandelCalc() {
+    long r0,i0,rn, p,q;
+    long rs,is;
+    int iteration;
+    char x, y;
+    rs=(mandel.rmax-mandel.rmin)/RESY; 
+    is=(mandel.imax-mandel.imin)/RESX;
+    
+    for (x=0; x<RESX; x++){
+        for (y=0; y<RESY; y++) { 
+            p=mandel.rmin+y*rs;
+            q=mandel.imin+x*is;
+            rn=0;
+            r0=0;
+            i0=0;
+            iteration=0;
+            while ((mul(rn,rn)+mul(i0,i0))<fixpt(4) && ++iteration<ITERATION_MAX)  {
+                rn=mul((r0+i0),(r0-i0)) +p;           
+                i0=mul(fixpt(2),mul(r0,i0)) +q;
+                r0=rn;
+            }
+            if (iteration==ITERATION_MAX) iteration=1;
+            bool pixel = ( iteration>1);
+            lcdSetPixel(x, y, pixel);
+        }
+    }
+    mandel.dirty = false;
+}
+
+void module_mandelbrot2(void) {
+    backlightInit();
+    IOCON_PIO3_3 = 0x10;
+    font=&Font_7x8;
+    mandelInit();
+    while (1) {
+        lcdDisplay(0);
+        mandelMove();
+        if (mandel.dirty) {
+            mandelCalc();
+        }
+        
+        if(gpioGetValue(RB_BTN0)==0 && gpioGetValue(RB_BTN4)==0){
+        DoString(0,0,"Enter ISP!");
+        lcdDisplay(0);
+        ISPandReset(5);
+    }
+    
+    }
+    return;
+}
+
+void tick_mandelbrot2(void){
+    static int foo=0;
+    static int toggle=0;
+	if(foo++>50){
+        toggle=1-toggle;
+		foo=0;
+        gpioSetValue (RB_LED0, toggle); 
+	};
+    
+    return;
+};