646 lines
15 KiB
C++
646 lines
15 KiB
C++
/*
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See rights and use declaration in License.h
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This library has been modified for the Maple Mini.
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Includes DMA transfers on DMA1 CH2 and CH3.
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*/
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#include <Adafruit_ILI9341_STM.h>
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// Constructor when using hardware SPI. Faster, but must use SPI pins
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// specific to each board type (e.g. 11,13 for Uno, 51,52 for Mega, etc.)
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Adafruit_ILI9341_STM::Adafruit_ILI9341_STM(int8_t cs, int8_t dc, int8_t rst) : Adafruit_GFX_AS(ILI9341_TFTWIDTH, ILI9341_TFTHEIGHT)
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{
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_cs = cs;
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_dc = dc;
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_rst = rst;
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}
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void Adafruit_ILI9341_STM::writecommand(uint8_t c)
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{
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dc_command();
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cs_clear();
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spiwrite(c);
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dc_data();
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}
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// Rather than a bazillion writecommand() and writedata() calls, screen
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// initialization commands and arguments are organized in these tables
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// stored in PROGMEM. The table may look bulky, but that's mostly the
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// formatting -- storage-wise this is hundreds of bytes more compact
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// than the equivalent code. Companion function follows.
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#define DELAY 0x80
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// Companion code to the above tables. Reads and issues
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// a series of LCD commands stored in PROGMEM byte array.
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void Adafruit_ILI9341_STM::commandList(uint8_t *addr)
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{
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uint8_t numCommands, numArgs;
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uint16_t ms;
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numCommands = pgm_read_byte(addr++); // Number of commands to follow
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while (numCommands--) { // For each command...
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writecommand(pgm_read_byte(addr++)); // Read, issue command
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numArgs = pgm_read_byte(addr++); // Number of args to follow
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ms = numArgs & DELAY; // If hibit set, delay follows args
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numArgs &= ~DELAY; // Mask out delay bit
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while (numArgs--) { // For each argument...
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writedata(pgm_read_byte(addr++)); // Read, issue argument
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}
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if (ms) {
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ms = pgm_read_byte(addr++); // Read post-command delay time (ms)
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if (ms == 255) ms = 500; // If 255, delay for 500 ms
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delay(ms);
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}
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}
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}
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void Adafruit_ILI9341_STM::begin(SPIClass & spi, uint32_t freq)
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{
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mSPI = spi;
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_freq = freq;
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_safe_freq = (freq>SAFE_FREQ) ? SAFE_FREQ : _freq;
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pinMode(_dc, OUTPUT);
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pinMode(_cs, OUTPUT);
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csport = portSetRegister(_cs);
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cspinmask = digitalPinToBitMask(_cs);
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cs_set(); // deactivate chip
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dcport = portSetRegister(_dc);
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dcpinmask = digitalPinToBitMask(_dc);
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mSPI.beginTransaction(SPISettings(_safe_freq, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT));
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// toggle RST low to reset
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if (_rst > 0) {
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pinMode(_rst, OUTPUT);
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digitalWrite(_rst, HIGH);
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delay(5);
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digitalWrite(_rst, LOW);
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delay(20);
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digitalWrite(_rst, HIGH);
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delay(150);
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}
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/*
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uint8_t x = readcommand8(ILI9341_RDMODE);
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Serial.print("\nDisplay Power Mode: 0x"); Serial.println(x, HEX);
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x = readcommand8(ILI9341_RDMADCTL);
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Serial.print("\nMADCTL Mode: 0x"); Serial.println(x, HEX);
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x = readcommand8(ILI9341_RDPIXFMT);
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Serial.print("\nPixel Format: 0x"); Serial.println(x, HEX);
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x = readcommand8(ILI9341_RDIMGFMT);
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Serial.print("\nImage Format: 0x"); Serial.println(x, HEX);
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x = readcommand8(ILI9341_RDSELFDIAG);
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Serial.print("\nSelf Diagnostic: 0x"); Serial.println(x, HEX);
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*/
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//if(cmdList) commandList(cmdList);
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writecommand(0xEF);
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writedata(0x03);
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writedata(0x80);
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writedata(0x02);
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writecommand(0xCF);
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writedata(0x00);
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writedata(0XC1);
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writedata(0X30);
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writecommand(0xED);
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writedata(0x64);
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writedata(0x03);
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writedata(0X12);
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writedata(0X81);
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writecommand(0xE8);
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writedata(0x85);
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writedata(0x00);
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writedata(0x78);
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writecommand(0xCB);
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writedata(0x39);
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writedata(0x2C);
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writedata(0x00);
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writedata(0x34);
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writedata(0x02);
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writecommand(0xF7);
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writedata(0x20);
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writecommand(0xEA);
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writedata(0x00);
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writedata(0x00);
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writecommand(ILI9341_PWCTR1); //Power control
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writedata(0x23); //VRH[5:0]
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writecommand(ILI9341_PWCTR2); //Power control
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writedata(0x10); //SAP[2:0];BT[3:0]
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writecommand(ILI9341_VMCTR1); //VCM control
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writedata(0x3e);
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writedata(0x28);
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writecommand(ILI9341_VMCTR2); //VCM control2
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writedata(0x86); //--
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writecommand(ILI9341_MADCTL); // Memory Access Control
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writedata(0x48);
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writecommand(ILI9341_PIXFMT);
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writedata(0x55);
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writecommand(ILI9341_FRMCTR1);
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writedata(0x00);
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writedata(0x18);
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writecommand(ILI9341_DFUNCTR); // Display Function Control
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writedata(0x08);
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writedata(0x82);
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writedata(0x27);
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writecommand(0xF2); // 3Gamma Function Disable
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writedata(0x00);
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writecommand(ILI9341_GAMMASET); //Gamma curve selected
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writedata(0x01);
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writecommand(ILI9341_GMCTRP1); //Set Gamma
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writedata(0x0F);
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writedata(0x31);
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writedata(0x2B);
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writedata(0x0C);
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writedata(0x0E);
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writedata(0x08);
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writedata(0x4E);
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writedata(0xF1);
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writedata(0x37);
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writedata(0x07);
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writedata(0x10);
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writedata(0x03);
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writedata(0x0E);
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writedata(0x09);
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writedata(0x00);
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writecommand(ILI9341_GMCTRN1); //Set Gamma
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writedata(0x00);
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writedata(0x0E);
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writedata(0x14);
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writedata(0x03);
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writedata(0x11);
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writedata(0x07);
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writedata(0x31);
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writedata(0xC1);
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writedata(0x48);
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writedata(0x08);
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writedata(0x0F);
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writedata(0x0C);
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writedata(0x31);
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writedata(0x36);
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writedata(0x0F);
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writecommand(ILI9341_SLPOUT); //Exit Sleep
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delay(120);
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writecommand(ILI9341_DISPON); //Display on
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delay(120);
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cs_set();
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_width = ILI9341_TFTWIDTH;
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_height = ILI9341_TFTHEIGHT;
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mSPI.beginTransaction(SPISettings(_freq, MSBFIRST, SPI_MODE0, DATA_SIZE_16BIT));
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}
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void Adafruit_ILI9341_STM::setAddrWindow(uint16_t x0, uint16_t y0,
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uint16_t x1, uint16_t y1)
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{
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writecommand(ILI9341_CASET); // Column addr set
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spiwrite(x0);
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spiwrite(x1);
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writecommand(ILI9341_PASET); // Row addr set
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spiwrite(y0);
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spiwrite(y1);
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writecommand(ILI9341_RAMWR); // write to RAM
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}
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void Adafruit_ILI9341_STM::pushColors(void * colorBuffer, uint16_t nr_pixels, uint8_t async)
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{
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cs_clear();
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if (async==0) {
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mSPI.dmaSend(colorBuffer, nr_pixels, 1);
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cs_set();
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} else {
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mSPI.dmaSendAsync(colorBuffer, nr_pixels, 1);
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}
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}
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void Adafruit_ILI9341_STM::pushColor(uint16_t color)
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{
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cs_clear();
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spiwrite(color);
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cs_set();
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}
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void Adafruit_ILI9341_STM::drawPixel(int16_t x, int16_t y, uint16_t color)
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{
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if ((x < 0) || (x >= _width) || (y < 0) || (y >= _height)) return;
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setAddrWindow(x, y, x + 1, y + 1);
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spiwrite(color);
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cs_set();
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}
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void Adafruit_ILI9341_STM::drawFastVLine(int16_t x, int16_t y, int16_t h,
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uint16_t color)
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{
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// Rudimentary clipping
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if ((x >= _width) || (y >= _height || h < 1)) return;
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if ((y + h - 1) >= _height)
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h = _height - y;
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if (h < 2 ) {
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drawPixel(x, y, color);
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return;
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}
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setAddrWindow(x, y, x, y + h - 1);
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if (h>DMA_ON_LIMIT) {
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lineBuffer[0] = color;
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mSPI.dmaSend(lineBuffer, h, 0);
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} else {
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mSPI.write(color, h);
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}
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cs_set();
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}
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void Adafruit_ILI9341_STM::drawFastHLine(int16_t x, int16_t y, int16_t w,
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uint16_t color)
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{
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// Rudimentary clipping
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if ((x >= _width) || (y >= _height || w < 1)) return;
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if ((x + w - 1) >= _width) w = _width - x;
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if (w < 2 ) {
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drawPixel(x, y, color);
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return;
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}
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setAddrWindow(x, y, x + w - 1, y);
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if (w>DMA_ON_LIMIT) {
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lineBuffer[0] = color;
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mSPI.dmaSend(lineBuffer, w, 0);
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} else {
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mSPI.write(color, w);
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}
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cs_set();
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}
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void Adafruit_ILI9341_STM::fillScreen(uint16_t color)
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{
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lineBuffer[0] = color;
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setAddrWindow(0, 0, _width - 1, _height - 1);
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uint32_t nr_bytes = _width * _height;
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while ( nr_bytes>65535 ) {
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nr_bytes -= 65535;
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mSPI.dmaSend(lineBuffer, (65535), 0);
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}
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mSPI.dmaSend(lineBuffer, nr_bytes, 0);
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cs_set();
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}
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// fill a rectangle
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void Adafruit_ILI9341_STM::fillRect(int16_t x, int16_t y, int16_t w, int16_t h,
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uint16_t color)
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{
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lineBuffer[0] = color;
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// rudimentary clipping (drawChar w/big text requires this)
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if ((x >= _width) || (y >= _height || h < 1 || w < 1)) return;
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if ((x + w - 1) >= _width) w = _width - x;
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if ((y + h - 1) >= _height) h = _height - y;
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if (w == 1 && h == 1) {
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drawPixel(x, y, color);
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return;
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}
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setAddrWindow(x, y, x + w - 1, y + h - 1);
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uint32_t nr_bytes = w * h;
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if ( nr_bytes>DMA_ON_LIMIT ) {
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while ( nr_bytes>65535 ) {
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nr_bytes -= 65535;
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mSPI.dmaSend(lineBuffer, (65535), 0);
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}
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mSPI.dmaSend(lineBuffer, nr_bytes, 0);
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} else {
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mSPI.write(color, nr_bytes);
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}
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cs_set();
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}
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/*
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* Draw lines faster by calculating straight sections and drawing them with fastVline and fastHline.
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*/
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void Adafruit_ILI9341_STM::drawLine(int16_t x0, int16_t y0,
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int16_t x1, int16_t y1, uint16_t color)
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{
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if ((y0 < 0 && y1 <0) || (y0 > _height && y1 > _height)) return;
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if ((x0 < 0 && x1 <0) || (x0 > _width && x1 > _width)) return;
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if (x0 < 0) x0 = 0;
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if (x1 < 0) x1 = 0;
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if (y0 < 0) y0 = 0;
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if (y1 < 0) y1 = 0;
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if (y0 == y1) {
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if (x1 > x0) {
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drawFastHLine(x0, y0, x1 - x0 + 1, color);
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}
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else if (x1 < x0) {
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drawFastHLine(x1, y0, x0 - x1 + 1, color);
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}
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else {
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drawPixel(x0, y0, color);
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}
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return;
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}
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else if (x0 == x1) {
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if (y1 > y0) {
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drawFastVLine(x0, y0, y1 - y0 + 1, color);
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}
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else {
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drawFastVLine(x0, y1, y0 - y1 + 1, color);
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}
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return;
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}
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bool steep = abs(y1 - y0) > abs(x1 - x0);
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if (steep) {
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swap(x0, y0);
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swap(x1, y1);
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}
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if (x0 > x1) {
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swap(x0, x1);
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swap(y0, y1);
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}
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int16_t dx, dy;
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dx = x1 - x0;
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dy = abs(y1 - y0);
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int16_t err = dx / 2;
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int16_t ystep;
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if (y0 < y1) {
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ystep = 1;
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}
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else {
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ystep = -1;
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}
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int16_t xbegin = x0;
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if (steep) {
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for (; x0 <= x1; x0++) {
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err -= dy;
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if (err < 0) {
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int16_t len = x0 - xbegin;
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if (len) {
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drawFastVLine (y0, xbegin, len + 1, color);
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//writeVLine_cont_noCS_noFill(y0, xbegin, len + 1);
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}
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else {
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drawPixel(y0, x0, color);
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//writePixel_cont_noCS(y0, x0, color);
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}
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xbegin = x0 + 1;
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y0 += ystep;
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err += dx;
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}
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}
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if (x0 > xbegin + 1) {
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//writeVLine_cont_noCS_noFill(y0, xbegin, x0 - xbegin);
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drawFastVLine(y0, xbegin, x0 - xbegin, color);
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}
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}
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else {
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for (; x0 <= x1; x0++) {
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err -= dy;
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if (err < 0) {
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int16_t len = x0 - xbegin;
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if (len) {
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drawFastHLine(xbegin, y0, len + 1, color);
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//writeHLine_cont_noCS_noFill(xbegin, y0, len + 1);
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}
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else {
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drawPixel(x0, y0, color);
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//writePixel_cont_noCS(x0, y0, color);
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}
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xbegin = x0 + 1;
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y0 += ystep;
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err += dx;
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}
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}
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if (x0 > xbegin + 1) {
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//writeHLine_cont_noCS_noFill(xbegin, y0, x0 - xbegin);
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drawFastHLine(xbegin, y0, x0 - xbegin, color);
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}
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}
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}
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// Pass 8-bit (each) R,G,B, get back 16-bit packed color
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uint16_t Adafruit_ILI9341_STM::color565(uint8_t r, uint8_t g, uint8_t b) {
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return ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3);
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}
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#define MADCTL_MY 0x80
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#define MADCTL_MX 0x40
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#define MADCTL_MV 0x20
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#define MADCTL_ML 0x10
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#define MADCTL_RGB 0x00
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#define MADCTL_BGR 0x08
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#define MADCTL_MH 0x04
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void Adafruit_ILI9341_STM::setRotation(uint8_t m)
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{
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rotation = m % 4; // can't be higher than 3
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switch (rotation) {
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case 0:
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m = (MADCTL_MX | MADCTL_BGR);
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_width = ILI9341_TFTWIDTH;
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_height = ILI9341_TFTHEIGHT;
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break;
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case 1:
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m = (MADCTL_MV | MADCTL_BGR);
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_width = ILI9341_TFTHEIGHT;
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_height = ILI9341_TFTWIDTH;
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break;
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case 2:
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m = (MADCTL_MY | MADCTL_BGR);
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_width = ILI9341_TFTWIDTH;
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_height = ILI9341_TFTHEIGHT;
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break;
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case 3:
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m = (MADCTL_MX | MADCTL_MY | MADCTL_MV | MADCTL_BGR);
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_width = ILI9341_TFTHEIGHT;
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_height = ILI9341_TFTWIDTH;
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break;
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}
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mSPI.setDataSize(DATA_SIZE_8BIT);
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writecommand(ILI9341_MADCTL);
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writedata(m);
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cs_set();
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mSPI.setDataSize(DATA_SIZE_16BIT);
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}
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void Adafruit_ILI9341_STM::invertDisplay(boolean i)
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{
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writecommand(i ? ILI9341_INVON : ILI9341_INVOFF);
|
|
cs_set();
|
|
}
|
|
|
|
|
|
uint16_t Adafruit_ILI9341_STM::readPixel(int16_t x, int16_t y)
|
|
{
|
|
mSPI.beginTransaction(SPISettings(_safe_freq, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT));
|
|
|
|
writecommand(ILI9341_CASET); // Column addr set
|
|
spiwrite16(x);
|
|
spiwrite16(x);
|
|
writecommand(ILI9341_PASET); // Row addr set
|
|
spiwrite16(y);
|
|
spiwrite16(y);
|
|
writecommand(ILI9341_RAMRD); // read GRAM
|
|
(void)spiread(); //dummy read
|
|
uint8_t r = spiread();
|
|
uint8_t g = spiread();
|
|
uint8_t b = spiread();
|
|
cs_set();
|
|
|
|
mSPI.beginTransaction(SPISettings(_freq, MSBFIRST, SPI_MODE0, DATA_SIZE_16BIT));
|
|
|
|
return color565(r, g, b);
|
|
}
|
|
|
|
uint16_t Adafruit_ILI9341_STM::readPixels(int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t *buf)
|
|
{
|
|
mSPI.beginTransaction(SPISettings(_safe_freq, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT));
|
|
|
|
writecommand(ILI9341_CASET); // Column addr set
|
|
spiwrite16(x1);
|
|
spiwrite16(x2);
|
|
writecommand(ILI9341_PASET); // Row addr set
|
|
spiwrite16(y1);
|
|
spiwrite16(y2);
|
|
writecommand(ILI9341_RAMRD); // read GRAM
|
|
(void)spiread(); //dummy read
|
|
uint8_t r, g, b;
|
|
uint16_t len = (x2-x1+1)*(y2-y1+1);
|
|
uint16_t ret = len;
|
|
while (len--) {
|
|
r = spiread();
|
|
g = spiread();
|
|
b = spiread();
|
|
*buf++ = color565(r, g, b);
|
|
}
|
|
cs_set();
|
|
|
|
mSPI.beginTransaction(SPISettings(_freq, MSBFIRST, SPI_MODE0, DATA_SIZE_16BIT));
|
|
return ret;
|
|
}
|
|
|
|
|
|
uint16_t Adafruit_ILI9341_STM::readPixelsRGB24(int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint8_t *buf)
|
|
{
|
|
mSPI.beginTransaction(SPISettings(_safe_freq, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT));
|
|
|
|
writecommand(ILI9341_CASET); // Column addr set
|
|
spiwrite16(x1);
|
|
spiwrite16(x2);
|
|
writecommand(ILI9341_PASET); // Row addr set
|
|
spiwrite16(y1);
|
|
spiwrite16(y2);
|
|
writecommand(ILI9341_RAMRD); // read GRAM
|
|
(void)spiread(); //dummy read
|
|
uint8_t r, g, b;
|
|
uint16_t len = (x2-x1+1)*(y2-y1+1);
|
|
uint16_t ret = len;
|
|
|
|
mSPI.dmaTransfer(buf, buf, len*3);
|
|
cs_set();
|
|
|
|
mSPI.beginTransaction(SPISettings(_freq, MSBFIRST, SPI_MODE0, DATA_SIZE_16BIT));
|
|
return ret;
|
|
}
|
|
|
|
uint8_t Adafruit_ILI9341_STM::readcommand8(uint8_t c, uint8_t index)
|
|
{
|
|
// the SPI clock must be set lower
|
|
mSPI.beginTransaction(SPISettings(_safe_freq, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT));
|
|
|
|
writecommand(c);
|
|
uint8_t r = spiread();
|
|
cs_set();
|
|
|
|
mSPI.beginTransaction(SPISettings(_freq, MSBFIRST, SPI_MODE0, DATA_SIZE_16BIT));
|
|
return r;
|
|
}
|
|
|
|
|
|
/*
|
|
|
|
uint16_t Adafruit_ILI9341_STM::readcommand16(uint8_t c) {
|
|
digitalWrite(_dc, LOW);
|
|
if (_cs)
|
|
digitalWrite(_cs, LOW);
|
|
|
|
spiwrite(c);
|
|
pinMode(_sid, INPUT); // input!
|
|
uint16_t r = spiread();
|
|
r <<= 8;
|
|
r |= spiread();
|
|
if (_cs)
|
|
digitalWrite(_cs, HIGH);
|
|
|
|
pinMode(_sid, OUTPUT); // back to output
|
|
return r;
|
|
}
|
|
|
|
uint32_t Adafruit_ILI9341_STM::readcommand32(uint8_t c) {
|
|
digitalWrite(_dc, LOW);
|
|
if (_cs)
|
|
digitalWrite(_cs, LOW);
|
|
spiwrite(c);
|
|
pinMode(_sid, INPUT); // input!
|
|
|
|
dummyclock();
|
|
dummyclock();
|
|
|
|
uint32_t r = spiread();
|
|
r <<= 8;
|
|
r |= spiread();
|
|
r <<= 8;
|
|
r |= spiread();
|
|
r <<= 8;
|
|
r |= spiread();
|
|
if (_cs)
|
|
digitalWrite(_cs, HIGH);
|
|
|
|
pinMode(_sid, OUTPUT); // back to output
|
|
return r;
|
|
}
|
|
|
|
*/
|