347 lines
7.8 KiB
C
347 lines
7.8 KiB
C
#include <string.h>
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#include <display.h>
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#include <sysdefs.h>
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#include "lpc134x.h"
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#include "core/ssp/ssp.h"
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#include "gpio/gpio.h"
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#include "basic/basic.h"
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#include "basic/config.h"
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#include "usb/usbmsc.h"
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/**************************************************************************/
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/* Utility routines to manage nokia display */
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/**************************************************************************/
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uint8_t lcdBuffer[RESX*RESY_B];
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uint32_t intstatus; // Caches USB interrupt state
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// (need to disable MSC while displaying)
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#define TYPE_CMD 0
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#define TYPE_DATA 1
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static void lcd_select() {
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#if CFG_USBMSC
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if(usbMSCenabled){
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intstatus=USB_DEVINTEN;
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USB_DEVINTEN=0;
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};
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#endif
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/* the LCD requires 9-Bit frames */
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uint32_t configReg = ( SSP_SSP0CR0_DSS_9BIT // Data size = 9-bit
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| SSP_SSP0CR0_FRF_SPI // Frame format = SPI
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| SSP_SSP0CR0_SCR_8); // Serial clock rate = 8
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SSP_SSP0CR0 = configReg;
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gpioSetValue(RB_LCD_CS, 0);
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}
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static void lcd_deselect() {
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gpioSetValue(RB_LCD_CS, 1);
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/* reset the bus to 8-Bit frames that everyone else uses */
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uint32_t configReg = ( SSP_SSP0CR0_DSS_8BIT // Data size = 8-bit
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| SSP_SSP0CR0_FRF_SPI // Frame format = SPI
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| SSP_SSP0CR0_SCR_8); // Serial clock rate = 8
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SSP_SSP0CR0 = configReg;
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#if CFG_USBMSC
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if(usbMSCenabled){
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USB_DEVINTEN=intstatus;
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};
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#endif
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}
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static void lcdWrite(uint8_t cd, uint8_t data) {
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uint16_t frame = 0x0;
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frame = cd << 8;
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frame |= data;
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while ((SSP_SSP0SR & (SSP_SSP0SR_TNF_NOTFULL | SSP_SSP0SR_BSY_BUSY)) != SSP_SSP0SR_TNF_NOTFULL);
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SSP_SSP0DR = frame;
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while ((SSP_SSP0SR & (SSP_SSP0SR_BSY_BUSY|SSP_SSP0SR_RNE_NOTEMPTY)) != SSP_SSP0SR_RNE_NOTEMPTY);
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/* clear the FIFO */
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frame = SSP_SSP0DR;
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}
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#define CS 2,1
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#define SCK 2,11
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#define SDA 0,9
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#define RST 2,2
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#ifdef NOTYET
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uint8_t lcdRead(uint8_t data)
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{
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uint8_t i;
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gpioSetDir(SDA, 1);
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gpioSetValue(SCK, 0);
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delayms(1);
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gpioSetValue(CS, 0);
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delayms(1);
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gpioSetValue(SDA, 0);
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delayms(1);
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gpioSetValue(SCK, 1);
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delayms(1);
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for(i=0; i<8; i++){
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gpioSetValue(SCK, 0);
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delayms(1);
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if( data & 0x80 )
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gpioSetValue(SDA, 1);
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else
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gpioSetValue(SDA, 0);
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data <<= 1;
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gpioSetValue(SCK, 1);
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delayms(1);
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}
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uint8_t ret = 0;
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gpioSetDir(SDA, 0);
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for(i=0; i<8; i++){
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gpioSetValue(SCK, 0);
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delayms(1);
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ret <<= 1;
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ret |= gpioGetValue(SDA);
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gpioSetValue(SCK, 1);
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delayms(1);
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}
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gpioSetValue(CS, 0);
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gpioSetDir(SDA, 1);
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delayms(1);
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}
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#endif
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void lcdInit(void) {
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sspInit(0, sspClockPolarity_Low, sspClockPhase_RisingEdge);
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gpioSetValue(RB_LCD_CS, 1);
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gpioSetValue(RB_LCD_RST, 1);
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gpioSetDir(RB_LCD_CS, gpioDirection_Output);
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gpioSetDir(RB_LCD_RST, gpioDirection_Output);
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delayms(100);
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gpioSetValue(RB_LCD_RST, 0);
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delayms(100);
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gpioSetValue(RB_LCD_RST, 1);
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delayms(100);
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lcd_select();
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/* Small Nokia 1200 LCD docs:
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* clear/ set
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* on 0xae / 0xaf
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* invert 0xa6 / 0xa7
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* mirror-x 0xA0 / 0xA1
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* mirror-y 0xc7 / 0xc8
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*
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* 0x20+x contrast (0=black - 0x2e)
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* 0x40+x offset in rows from top (-0x7f)
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* 0x80+x contrast? (0=black -0x9f?)
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* 0xd0+x black lines from top? (-0xdf?)
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*
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*/
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lcdWrite(TYPE_CMD,0xE2);
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delayms(5);
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lcdWrite(TYPE_CMD,0xAF); // Display ON
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lcdWrite(TYPE_CMD,0xA1); // Mirror-X
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lcdWrite(TYPE_CMD,0xA4);
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lcdWrite(TYPE_CMD,0x2F);
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lcdWrite(TYPE_CMD,0xB0);
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lcdWrite(TYPE_CMD,0x10);
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lcdWrite(TYPE_CMD,0x00);
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uint16_t i;
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for(i=0; i<100; i++)
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lcdWrite(TYPE_DATA,0x00);
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lcd_deselect();
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}
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void lcdFill(char f){
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int x;
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for(x=0;x<RESX*RESY_B;x++) {
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lcdBuffer[x]=f;
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}
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};
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void lcdSafeSetPixel(char x, char y, bool f){
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if (x>=0 && x<RESX && y>=0 && y < RESY)
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lcdSetPixel(x, y, f);
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}
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void lcdSetPixel(char x, char y, bool f){
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if (x<0 || x> RESX || y<0 || y > RESY)
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return;
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char y_byte = (RESY-(y+1)) / 8;
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char y_off = (RESY-(y+1)) % 8;
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char byte = lcdBuffer[y_byte*RESX+(RESX-(x+1))];
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if (f) {
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byte |= (1 << y_off);
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} else {
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byte &= ~(1 << y_off);
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}
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lcdBuffer[y_byte*RESX+(RESX-(x+1))] = byte;
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}
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bool lcdGetPixel(char x, char y){
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char y_byte = (RESY-(y+1)) / 8;
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char y_off = (RESY-(y+1)) % 8;
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char byte = lcdBuffer[y_byte*RESX+(RESX-(x+1))];
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return byte & (1 << y_off);
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}
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void lcdDisplay(void) {
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char byte;
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lcd_select();
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lcdWrite(TYPE_CMD,0xB0);
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lcdWrite(TYPE_CMD,0x10);
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lcdWrite(TYPE_CMD,0x00);
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uint16_t i,page;
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for(page=0; page<RESY_B;page++) {
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for(i=0; i<RESX; i++) {
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if (GLOBAL(lcdmirror))
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byte=lcdBuffer[page*RESX+RESX-1-(i)];
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else
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byte=lcdBuffer[page*RESX+(i)];
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if (GLOBAL(lcdinvert))
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byte=~byte;
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lcdWrite(TYPE_DATA,byte);
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}
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}
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lcd_deselect();
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}
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void lcdRefresh() __attribute__ ((weak, alias ("lcdDisplay")));
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inline void lcdInvert(void) {
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GLOBAL(lcdinvert)=!GLOBAL(lcdinvert);
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}
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void lcdSetContrast(int c) {
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c+=0x80;
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if(c>0x9F)
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return;
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lcd_select();
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lcdWrite(TYPE_CMD,c);
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lcd_deselect();
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};
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void lcdSetInvert(int c) {
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if(c>1)
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c=1;
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if(c<0)
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c=1;
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c+=0xa6;
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lcd_select();
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lcdWrite(TYPE_CMD,c);
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lcd_deselect();
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};
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/* deprecated */
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void __attribute__((__deprecated__)) lcdToggleFlag(int flag) {
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if(flag==LCD_MIRRORX)
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GLOBAL(lcdmirror)=!GLOBAL(lcdmirror);
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if(flag==LCD_INVERTED)
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GLOBAL(lcdinvert)=!GLOBAL(lcdinvert);
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}
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void lcdShiftH(bool right, bool wrap) {
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uint8_t tmp;
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for (int yb = 0; yb<RESY_B; yb++) {
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if (right) {
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tmp = lcdBuffer[yb*RESX];
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memmove(lcdBuffer + yb*RESX,lcdBuffer + yb*RESX+1 ,RESX-1);
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lcdBuffer[yb*RESX+(RESX-1)] = wrap?tmp:0;
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} else {
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tmp = lcdBuffer[yb*RESX+(RESX-1)];
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memmove(lcdBuffer + yb*RESX+1,lcdBuffer + yb*RESX ,RESX-1);
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lcdBuffer[yb*RESX] = wrap?tmp:0;
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}
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}
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}
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void lcdShiftV8(bool up, bool wrap) {
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uint8_t tmp[RESX];
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if (!up) {
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if (wrap)
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memmove(tmp, lcdBuffer, RESX);
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else
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memset(tmp,0,RESX);
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memmove(lcdBuffer,lcdBuffer+RESX ,RESX*(RESY_B-1));
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memmove(lcdBuffer+RESX*(RESY_B-1),tmp,RESX);
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} else {
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if (wrap)
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memmove(tmp, lcdBuffer+RESX*(RESY_B-1), RESX);
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else
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memset(tmp,0,RESX);
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memmove(lcdBuffer+RESX,lcdBuffer ,RESX*(RESY_B-1));
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memmove(lcdBuffer,tmp,RESX);
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}
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}
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void lcdShiftV(bool up, bool wrap) {
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uint8_t tmp[RESX];
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if (up) {
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if (wrap)
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memmove(tmp,lcdBuffer+((RESY_B-1)*RESX),RESX);
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else
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memset(tmp,0,RESX);
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for (int x = 0; x<RESX; x++){
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for (int y = RESY_B-1; y > 0; y--){
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lcdBuffer[x+(y*RESX)] = (lcdBuffer[x+(y*RESX)] << 1) |( lcdBuffer[x+((y-1)*RESX)] >> 7);
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}
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lcdBuffer[x] = ( lcdBuffer[x] << 1) | ((tmp[x]>>3)&1);
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}
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} else {
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if (wrap)
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memmove(tmp,lcdBuffer,RESX);
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else
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memset(tmp,0,RESX);
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for (int x = 0; x<RESX; x++){
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for (int y = 0; y < (RESY_B-1); y++){
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lcdBuffer[x+(y*RESX)] = (lcdBuffer[x+(y*RESX)] >> 1) |( lcdBuffer[x+((y+1)*RESX)] << 7);
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}
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lcdBuffer[x+((RESY_B-1)*RESX)] = ( lcdBuffer[x+((RESY_B-1)*RESX)] >> 1) | ((tmp[x]<<3)&8);
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}
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}
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}
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void lcdShift(int x, int y, bool wrap) {
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bool dir=true;
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if(x<0){
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dir=false;
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x=-x;
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};
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while(x-->0)
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lcdShiftH(dir, wrap);
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if(y<0){
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dir=false;
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y=-y;
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}else{
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dir=true;
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};
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while(y>=8){
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y-=8;
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lcdShiftV8(dir, wrap);
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};
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while(y-->0)
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lcdShiftV(dir, wrap);
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}
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