ST7735芯片TFT SPI屏幕驱动代码

/*************************************************** This is a library for the Adafruit 1.8" SPI display. This library works with the Adafruit 1.8" TFT Breakout w/SD card ----> http://www.adafruit.com/products/358 The 1.8" TFT shield ----> https://www.adafruit.com/product/802 The 1.44" TFT breakout ----> https://www.adafruit.com/product/2088 as well as Adafruit raw 1.8" TFT display ----> http://www.adafruit.com/products/618 Check out the links above for our tutorials and wiring diagrams These displays use SPI to communicate, 4 or 5 pins are required to interface (RST is optional) Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. MIT license, all text above must be included in any redistribution ****************************************************/ #include "Adafruit_ST7735.h" #include <limits.h> #include "pins_arduino.h" #include "wiring_private.h" #include <SPI.h> #if !defined(ST7735_USE_HWSPI_ONLY) // Constructor when using software SPI. All output pins are configurable. Adafruit_ST7735::Adafruit_ST7735(int8_t cs, int8_t rs, int8_t sid, int8_t sclk, int8_t rst) : Adafruit_GFX(ST7735_TFTWIDTH, ST7735_TFTHEIGHT_18) { _cs = cs; _rs = rs; _sid = sid; _sclk = sclk; _rst = rst; hwSPI = false; } #endif // Constructor when using hardware SPI. Faster, but must use SPI pins // specific to each board type (e.g. 11,13 for Uno, 51,52 for Mega, etc.) Adafruit_ST7735::Adafruit_ST7735(int8_t cs, int8_t rs, int8_t rst) : Adafruit_GFX(ST7735_TFTWIDTH, ST7735_TFTHEIGHT_18) { _cs = cs; _rs = rs; _rst = rst; hwSPI = true; _sid = _sclk = 0; } #if defined(CORE_TEENSY) && !defined(__AVR__) #define __AVR__ #endif #if defined(ST7735_USE_HWSPI_ONLY) inline void Adafruit_ST7735::spiwrite(uint8_t c) { SPI.transfer(c); } #elif defined(__AVR__) inline void Adafruit_ST7735::spiwrite(uint8_t c) { //Serial.println(c, HEX); if (hwSPI) { SPDR = c; while(!(SPSR & _BV(SPIF))); } else { // Fast SPI bitbang swiped from LPD8806 library for(uint8_t bit = 0x80; bit; bit >>= 1) { if(c & bit) *dataport |= datapinmask; else *dataport &= ~datapinmask; *clkport |= clkpinmask; *clkport &= ~clkpinmask; } } } #elif defined(__SAM3X8E__) inline void Adafruit_ST7735::spiwrite(uint8_t c) { //Serial.println(c, HEX); if (hwSPI) { SPI.transfer(c); } else { // Fast SPI bitbang swiped from LPD8806 library for(uint8_t bit = 0x80; bit; bit >>= 1) { if(c & bit) dataport->PIO_SODR |= datapinmask; else dataport->PIO_CODR |= datapinmask; clkport->PIO_SODR |= clkpinmask; clkport->PIO_CODR |= clkpinmask; } } } #else #error Unsupported board. #endif #if defined(ST7735_USE_HWSPI_WRITE16) inline void Adafruit_ST7735::spiwrite16(uint16_t v) { SPI.write16(v); } #else inline void Adafruit_ST7735::spiwrite16(uint16_t v) { spiwrite((uint8_t)(v >> 8)); spiwrite((uint8_t)(v >> 0)); } #endif #if defined(ST7735_USE_GENERIC_IO) inline void Adafruit_ST7735::setCS(bool level) { digitalWrite(_cs, level); } inline void Adafruit_ST7735::setRS(bool level) { digitalWrite(_rs, level); } #elif defined(__AVR__) inline void Adafruit_ST7735::setCS(bool level) { if (level) { *csport |= cspinmask; } else { *csport &= ~cspinmask; } } inline void Adafruit_ST7735::setRS(bool level) { if (level) { *rsport |= rspinmask; } else { *rsport &= ~rspinmask; } } #elif defined(__SAM3X8E__) inline void Adafruit_ST7735::setCS(bool level) { if (level) { csport->PIO_SODR |= cspinmask; } else { csport->PIO_CODR |= cspinmask; } } inline void Adafruit_ST7735::setRS(bool level) { if (level) { rsport->PIO_SODR |= rspinmask; } else { rsport->PIO_CODR |= rspinmask; } } #else #error Unsupported board. #endif void Adafruit_ST7735::writecommand(uint8_t c) { setRS(false); setCS(false); //Serial.print("C "); spiwrite(c); setCS(true); } void Adafruit_ST7735::writedata(uint8_t c) { setRS(true); setCS(false); //Serial.print("D "); spiwrite(c); setCS(true); } void Adafruit_ST7735::writedata16(uint16_t c) { setRS(true); setCS(false); //Serial.print("D "); spiwrite16(c); setCS(true); } // Rather than a bazillion writecommand() and writedata() calls, screen // initialization commands and arguments are organized in these tables // stored in PROGMEM. The table may look bulky, but that's mostly the // formatting -- storage-wise this is hundreds of bytes more compact // than the equivalent code. Companion function follows. #define DELAY 0x80 static const uint8_t PROGMEM Bcmd[] = { // Initialization commands for 7735B screens 18, // 18 commands in list: ST7735_SWRESET, DELAY, // 1: Software reset, no args, w/delay 50, // 50 ms delay ST7735_SLPOUT , DELAY, // 2: Out of sleep mode, no args, w/delay 255, // 255 = 500 ms delay ST7735_COLMOD , 1+DELAY, // 3: Set color mode, 1 arg + delay: 0x05, // 16-bit color 10, // 10 ms delay ST7735_FRMCTR1, 3+DELAY, // 4: Frame rate control, 3 args + delay: 0x00, // fastest refresh 0x06, // 6 lines front porch 0x03, // 3 lines back porch 10, // 10 ms delay ST7735_MADCTL , 1 , // 5: Memory access ctrl (directions), 1 arg: 0x08, // Row addr/col addr, bottom to top refresh ST7735_DISSET5, 2 , // 6: Display settings #5, 2 args, no delay: 0x15, // 1 clk cycle nonoverlap, 2 cycle gate // rise, 3 cycle osc equalize 0x02, // Fix on VTL ST7735_INVCTR , 1 , // 7: Display inversion control, 1 arg: 0x0, // Line inversion ST7735_PWCTR1 , 2+DELAY, // 8: Power control, 2 args + delay: 0x02, // GVDD = 4.7V 0x70, // 1.0uA 10, // 10 ms delay ST7735_PWCTR2 , 1 , // 9: Power control, 1 arg, no delay: 0x05, // VGH = 14.7V, VGL = -7.35V ST7735_PWCTR3 , 2 , // 10: Power control, 2 args, no delay: 0x01, // Opamp current small 0x02, // Boost frequency ST7735_VMCTR1 , 2+DELAY, // 11: Power control, 2 args + delay: 0x3C, // VCOMH = 4V 0x38, // VCOML = -1.1V 10, // 10 ms delay ST7735_PWCTR6 , 2 , // 12: Power control, 2 args, no delay: 0x11, 0x15, ST7735_GMCTRP1,16 , // 13: Magical unicorn dust, 16 args, no delay: 0x09, 0x16, 0x09, 0x20, // (seriously though, not sure what 0x21, 0x1B, 0x13, 0x19, // these config values represent) 0x17, 0x15, 0x1E, 0x2B, 0x04, 0x05, 0x02, 0x0E, ST7735_GMCTRN1,16+DELAY, // 14: Sparkles and rainbows, 16 args + delay: 0x0B, 0x14, 0x08, 0x1E, // (ditto) 0x22, 0x1D, 0x18, 0x1E, 0x1B, 0x1A, 0x24, 0x2B, 0x06, 0x06, 0x02, 0x0F, 10, // 10 ms delay ST7735_CASET , 4 , // 15: Column addr set, 4 args, no delay: 0x00, 0x02, // XSTART = 2 0x00, 0x81, // XEND = 129 ST7735_RASET , 4 , // 16: Row addr set, 4 args, no delay: 0x00, 0x02, // XSTART = 1 0x00, 0x81, // XEND = 160 ST7735_NORON , DELAY, // 17: Normal display on, no args, w/delay 10, // 10 ms dela