Diff: GDEP015OC1.cpp

Revision:

2:1c8f73aa2a16

Parent:

1:4fff95e316c9

Child:

3:dc7b794b59b7

--- a/GDEP015OC1.cpp	Wed Sep 14 14:57:23 2016 +0000
+++ b/GDEP015OC1.cpp	Thu Sep 15 09:19:30 2016 +0000
@@ -1,21 +1,197 @@
 #include "mbed.h"
-
 #include "GDEP015OC1.h"
 
-GDEP015OC1::GDEP015OC1(spi& spi, PinName cs=p5, PinName dc=p6, PinName rst=p7, PinName busy=p8) : _spi(spi), _cs(cs), _dc(dc), _rst(rst), _busy(busy){
+static const unsigned char _lutFull[] = { 
+    0x02, 0x02, 0x01, 0x11, 0x12, 0x12, 0x22, 0x22, 0x66, 0x69, 0x69, 0x59, 0x58, 0x99, 0x99, 
+    0x88, 0x00, 0x00, 0x00, 0x00, 0xF8, 0xB4, 0x13, 0x51, 0x35, 0x51, 0x51, 0x19, 0x01, 0x00
+};
+
+GDEP015OC1::GDEP015OC1(SPI& spi, PinName cs=p5, PinName dc=p6, PinName rst=p7, PinName busy=p8) : _spi(spi), _cs(cs), _dc(dc), _rst(rst), _busy(busy){
     _init();
 }
 
-void GDEP015OC1::_spiCallback(int event){
-    if(event = SPI_EVENT_COMPLETE)
-        cs = 1;    
+void GDEP015OC1::_spiCommand(unsigned char command){
+    _cs = _dc = 0;
+    wait_us(1);
+    
+    _spi.write(command);
+}
+
+void GDEP015OC1::_spiData(unsigned char data){
+    _cs = 0;
+    _dc = 1;
+    wait_us(1);
+    
+    _spi.write(data);
+}
+
+void GDEP015OC1::_init(void){
+    _rst = _cs = 1;
+    //empty();    
 }
 
-bool GDEP015OC1::_spiCommand(unsigned char command){
-    unsigned char _package = command;
-    cs = dc = 0;
-    wait_us(1);
+void GDEP015OC1::_wakeUp(void){
+    _rst = 0;
+    wait_ms(10);
+    _rst = 1;
+    wait_ms(10);
     
-    while(transfer(&_package, 1, NULL, 0, NULL)!= 0);
+    //Stage 3
+    //Driver Output control
+    _spiCommand(0x01);
+    _spiData(0xC7);
+    _spiData(0x00);
+    _spiData(0x00);
+    //Softstart
+    _spiCommand(0x0C);
+    _spiData(0xD7);
+    _spiData(0xD6);
+    _spiData(0x9D);
+
+    _spiCommand(0x22);
+    _spiData(0xF0);
+
+    //VCOM setting
+    _spiCommand(0x2C);
+    _spiData(0xA8);
+    //Dummy line period
+    _spiCommand(0x3A);
+    _spiData(0x1A);
+    //Gate line width
+    _spiCommand(0x3B);
+    _spiData(0x08);
+    //Set data entry mode
+    _spiCommand(0x11);
+    _spiData(0x01); //DO NOT TOUCH THIS! (MUST BE 0x01)
+
+    //Gate driver start position
+    _spiCommand(0x0F);
+    _spiData(0x2B);
+    _spiData(0x01);
+
+    //VGH VGL
+    _spiCommand(0x03);
+    _spiData(0x00);
+    //VSH, VSL
+    _spiCommand(0x04);
+    _spiData(0x0A);
+
+    //Define X display size
+    _spiCommand(0x44);
+    _spiData(0x00);
+    _spiData(0x18);
+    //Define Y display size
+    _spiCommand(0x45);
+    _spiData(0xC7);
+    _spiData(0x00);
+    _spiData(0x2B);
+    _spiData(0x01);
+
+    //Define X RAM address
+    _spiCommand(0x4E);
+    _spiData(0x00);
+    //Define Y RAM address
+    _spiCommand(0x4F);
+    _spiData(0xC7);
+    _spiData(0x00);
+
+    //Border waveform control
+    _spiCommand(0x3C);
+    _spiData(0x33);
+
+    //Write LUT
+    _spiCommand(0x32);
+    for(uint8_t i = 0; i<30;i++)
+      _spiData(_lutFull[i]);
+
+    //Power on
+    _spiCommand(0x22);
+    _spiData(0xC0);
+
+    //Define X RAM address
+    _spiCommand(0x4E);
+    _spiData(0x00);
+    //Define Y RAM address
+    _spiCommand(0x4F);
+    _spiData(0xC7);
+    _spiData(0x00);
 }
 
+void GDEP015OC1::_sleep(void){
+    while(_busy == BUSY_STATE);
+
+    _spiCommand(0x10);
+    _spiData(0x01);
+}
+
+//If you touch this function satan will feast on your soul for an eternity!
+unsigned char GDEP015OC1::_pixelConv(unsigned char *data, int i){
+    uint8_t pix = 0x00;
+    for(uint8_t x = 0; x < 8; x++){
+        pix |= ((*(data + (i*200)%5000 + (24-i/200) + x*25)>>((i/25)%8))&(0x01))<<(7-x);
+    }
+    return pix;    
+}
+
+uint8_t GDEP015OC1::_mirrorData(uint8_t data){
+    uint8_t mirror = 0x00;
+    for(uint8_t i=0; i<8; i++)
+        mirror |= ((data>>i) & 0x01) << (7 - i);
+
+    return mirror;
+}
+
+void GDEP015OC1::empty(void){
+    for(uint16_t x=0; x<5000; x++)
+        _buffer[x] = 0x00;
+}
+
+void GDEP015OC1::write(void){
+    _wakeUp();
+
+    _spiCommand(0x24);
+    for(int16_t x=0; x>=0 && x<200; x++){
+        for(int16_t y=24; y>=0 && y<25; y--){
+            _spiData(_mirrorData(_pixelConv(_buffer, x*25+y)));
+            wait_us(10);
+        }
+    }
+
+    _spiCommand(0x22);
+    _spiData(0x04);
+    _spiCommand(0x22);
+    _spiData(0x08);
+
+    //Update
+    _spiCommand(0x22);
+    _spiData(0xC7);
+    _spiCommand(0x20);
+
+    _sleep();
+}
+
+void GDEP015OC1::drawPixel(uint16_t startX, uint16_t startY, bool color=0){
+    if(startX>199 || startY>199) return;
+    
+    uint16_t i = startX/8 + startY*25;
+
+    if(!color)
+        _buffer[i] = (_buffer[i] | (1<<(7-startX%8)));
+    else
+        _buffer[i] = (_buffer[i] & (0xFF^(1<<(7-startX%8))));
+}
+
+
+void GDEP015OC1::drawLine(uint16_t startX,  uint16_t startY, uint16_t stopX, uint16_t stopY, bool color=0){
+    int dx = abs(stopX-startX), sx = startX<stopX ? 1 : -1;
+    int dy = abs(stopY-startY), sy = startY<stopY ? 1 : -1;
+    int err = (dx>dy ? dx : -dy)/2, e2;
+    
+    for(;;){
+        drawPixel(startX,startY,color);
+        if (startX==stopX && startY==stopY) break;
+        e2 = err;
+        if (e2 >-dx) { err -= dy; startX += sx; }
+        if (e2 < dy) { err += dx; startY += sy; }
+    }
+}
\ No newline at end of file