From cea246d0eba80af7d7a4447d7ad6f972222f83b7 Mon Sep 17 00:00:00 2001 From: Scott Powell Date: Mon, 6 Jul 2026 15:09:18 +1000 Subject: [PATCH] * super fast ST7735 display driver --- src/helpers/ui/ST7735Display.cpp | 553 +++++++++++++++++++++++++--- src/helpers/ui/ST7735Display.h | 9 +- variants/heltec_t096/platformio.ini | 2 +- 3 files changed, 502 insertions(+), 62 deletions(-) diff --git a/src/helpers/ui/ST7735Display.cpp b/src/helpers/ui/ST7735Display.cpp index a6087dd81..2b9f3ebbe 100644 --- a/src/helpers/ui/ST7735Display.cpp +++ b/src/helpers/ui/ST7735Display.cpp @@ -1,12 +1,404 @@ #include "ST7735Display.h" -#ifndef DISPLAY_ROTATION - #define DISPLAY_ROTATION 2 -#endif +//#include + +// Optimised ST7735 display driver, derived from Adafruit_ST7735 library. + +#define ST_CMD_DELAY 0x80 // special signifier for command lists + +#define ST77XX_NOP 0x00 +#define ST77XX_SWRESET 0x01 +#define ST77XX_RDDID 0x04 +#define ST77XX_RDDST 0x09 + +#define ST77XX_SLPIN 0x10 +#define ST77XX_SLPOUT 0x11 +#define ST77XX_PTLON 0x12 +#define ST77XX_NORON 0x13 + +#define ST77XX_INVOFF 0x20 +#define ST77XX_INVON 0x21 +#define ST77XX_DISPOFF 0x28 +#define ST77XX_DISPON 0x29 +#define ST77XX_CASET 0x2A +#define ST77XX_RASET 0x2B +#define ST77XX_RAMWR 0x2C +#define ST77XX_RAMRD 0x2E + +#define ST77XX_PTLAR 0x30 +#define ST77XX_TEOFF 0x34 +#define ST77XX_TEON 0x35 +#define ST77XX_MADCTL 0x36 +#define ST77XX_COLMOD 0x3A + +#define ST77XX_MADCTL_MY 0x80 +#define ST77XX_MADCTL_MX 0x40 +#define ST77XX_MADCTL_MV 0x20 +#define ST77XX_MADCTL_ML 0x10 +#define ST77XX_MADCTL_RGB 0x00 + +#define ST77XX_RDID1 0xDA +#define ST77XX_RDID2 0xDB +#define ST77XX_RDID3 0xDC +#define ST77XX_RDID4 0xDD + +// Some ready-made 16-bit ('565') color settings: +#define ST77XX_BLACK 0x0000 +#define ST77XX_WHITE 0xFFFF +#define ST77XX_RED 0xF800 +#define ST77XX_GREEN 0x07E0 +#define ST77XX_BLUE 0x001F +#define ST77XX_CYAN 0x07FF +#define ST77XX_MAGENTA 0xF81F +#define ST77XX_YELLOW 0xFFE0 +#define ST77XX_ORANGE 0xFC00 + + +// some flags for initR() :( +#define INITR_GREENTAB 0x00 +#define INITR_REDTAB 0x01 +#define INITR_BLACKTAB 0x02 +#define INITR_18GREENTAB INITR_GREENTAB +#define INITR_18REDTAB INITR_REDTAB +#define INITR_18BLACKTAB INITR_BLACKTAB +#define INITR_144GREENTAB 0x01 +#define INITR_MINI160x80 0x04 +#define INITR_HALLOWING 0x05 +#define INITR_MINI160x80_PLUGIN 0x06 + +// Some register settings +#define ST7735_MADCTL_BGR 0x08 +#define ST7735_MADCTL_MH 0x04 + +#define ST7735_FRMCTR1 0xB1 +#define ST7735_FRMCTR2 0xB2 +#define ST7735_FRMCTR3 0xB3 +#define ST7735_INVCTR 0xB4 +#define ST7735_DISSET5 0xB6 + +#define ST7735_PWCTR1 0xC0 +#define ST7735_PWCTR2 0xC1 +#define ST7735_PWCTR3 0xC2 +#define ST7735_PWCTR4 0xC3 +#define ST7735_PWCTR5 0xC4 +#define ST7735_VMCTR1 0xC5 + +#define ST7735_PWCTR6 0xFC + +#define ST7735_GMCTRP1 0xE0 +#define ST7735_GMCTRN1 0xE1 + +// Some ready-made 16-bit ('565') color settings: +#define ST7735_BLACK ST77XX_BLACK +#define ST7735_WHITE ST77XX_WHITE +#define ST7735_RED ST77XX_RED +#define ST7735_GREEN ST77XX_GREEN +#define ST7735_BLUE ST77XX_BLUE +#define ST7735_CYAN ST77XX_CYAN +#define ST7735_MAGENTA ST77XX_MAGENTA +#define ST7735_YELLOW ST77XX_YELLOW +#define ST7735_ORANGE ST77XX_ORANGE + +static TFT_eSPI lcd = TFT_eSPI(160, 80); +static uint32_t curr_color; + +#define _spi (&SPI1) + +SPISettings _spiSettings = SPISettings(40000000, MSBFIRST, SPI_MODE0); + +// clang-format off +static const uint8_t PROGMEM + Bcmd[] = { // Init commands for 7735B screens + 18, // 18 commands in list: + ST77XX_SWRESET, ST_CMD_DELAY, // 1: Software reset, no args, w/delay + 50, // 50 ms delay + ST77XX_SLPOUT, ST_CMD_DELAY, // 2: Out of sleep mode, no args, w/delay + 255, // 255 = max (500 ms) delay + ST77XX_COLMOD, 1+ST_CMD_DELAY, // 3: Set color mode, 1 arg + delay: + 0x05, // 16-bit color + 10, // 10 ms delay + ST7735_FRMCTR1, 3+ST_CMD_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 + ST77XX_MADCTL, 1, // 5: Mem access ctl (directions), 1 arg: + 0x08, // Row/col addr, bottom-top refresh + ST7735_DISSET5, 2, // 6: Display settings #5, 2 args: + 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+ST_CMD_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+ST_CMD_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: Gamma Adjustments (pos. polarity), 16 args + delay: + 0x09, 0x16, 0x09, 0x20, // (Not entirely necessary, but provides + 0x21, 0x1B, 0x13, 0x19, // accurate colors) + 0x17, 0x15, 0x1E, 0x2B, + 0x04, 0x05, 0x02, 0x0E, + ST7735_GMCTRN1,16+ST_CMD_DELAY, // 14: Gamma Adjustments (neg. polarity), 16 args + delay: + 0x0B, 0x14, 0x08, 0x1E, // (Not entirely necessary, but provides + 0x22, 0x1D, 0x18, 0x1E, // accurate colors) + 0x1B, 0x1A, 0x24, 0x2B, + 0x06, 0x06, 0x02, 0x0F, + 10, // 10 ms delay + ST77XX_CASET, 4, // 15: Column addr set, 4 args, no delay: + 0x00, 0x02, // XSTART = 2 + 0x00, 0x81, // XEND = 129 + ST77XX_RASET, 4, // 16: Row addr set, 4 args, no delay: + 0x00, 0x02, // XSTART = 1 + 0x00, 0x81, // XEND = 160 + ST77XX_NORON, ST_CMD_DELAY, // 17: Normal display on, no args, w/delay + 10, // 10 ms delay + ST77XX_DISPON, ST_CMD_DELAY, // 18: Main screen turn on, no args, delay + 255 }, // 255 = max (500 ms) delay + + Rcmd1[] = { // 7735R init, part 1 (red or green tab) + 15, // 15 commands in list: + ST77XX_SWRESET, ST_CMD_DELAY, // 1: Software reset, 0 args, w/delay + 150, // 150 ms delay + ST77XX_SLPOUT, ST_CMD_DELAY, // 2: Out of sleep mode, 0 args, w/delay + 255, // 500 ms delay + ST7735_FRMCTR1, 3, // 3: Framerate ctrl - normal mode, 3 arg: + 0x01, 0x2C, 0x2D, // Rate = fosc/(1x2+40) * (LINE+2C+2D) + ST7735_FRMCTR2, 3, // 4: Framerate ctrl - idle mode, 3 args: + 0x01, 0x2C, 0x2D, // Rate = fosc/(1x2+40) * (LINE+2C+2D) + ST7735_FRMCTR3, 6, // 5: Framerate - partial mode, 6 args: + 0x01, 0x2C, 0x2D, // Dot inversion mode + 0x01, 0x2C, 0x2D, // Line inversion mode + ST7735_INVCTR, 1, // 6: Display inversion ctrl, 1 arg: + 0x07, // No inversion + ST7735_PWCTR1, 3, // 7: Power control, 3 args, no delay: + 0xA2, + 0x02, // -4.6V + 0x84, // AUTO mode + ST7735_PWCTR2, 1, // 8: Power control, 1 arg, no delay: + 0xC5, // VGH25=2.4C VGSEL=-10 VGH=3 * AVDD + ST7735_PWCTR3, 2, // 9: Power control, 2 args, no delay: + 0x0A, // Opamp current small + 0x00, // Boost frequency + ST7735_PWCTR4, 2, // 10: Power control, 2 args, no delay: + 0x8A, // BCLK/2, + 0x2A, // opamp current small & medium low + ST7735_PWCTR5, 2, // 11: Power control, 2 args, no delay: + 0x8A, 0xEE, + ST7735_VMCTR1, 1, // 12: Power control, 1 arg, no delay: + 0x0E, + ST77XX_INVOFF, 0, // 13: Don't invert display, no args + ST77XX_MADCTL, 1, // 14: Mem access ctl (directions), 1 arg: + 0xC8, // row/col addr, bottom-top refresh + ST77XX_COLMOD, 1, // 15: set color mode, 1 arg, no delay: + 0x05 }, // 16-bit color + + Rcmd2green[] = { // 7735R init, part 2 (green tab only) + 2, // 2 commands in list: + ST77XX_CASET, 4, // 1: Column addr set, 4 args, no delay: + 0x00, 0x02, // XSTART = 0 + 0x00, 0x7F+0x02, // XEND = 127 + ST77XX_RASET, 4, // 2: Row addr set, 4 args, no delay: + 0x00, 0x01, // XSTART = 0 + 0x00, 0x9F+0x01 }, // XEND = 159 + + Rcmd2red[] = { // 7735R init, part 2 (red tab only) + 2, // 2 commands in list: + ST77XX_CASET, 4, // 1: Column addr set, 4 args, no delay: + 0x00, 0x00, // XSTART = 0 + 0x00, 0x7F, // XEND = 127 + ST77XX_RASET, 4, // 2: Row addr set, 4 args, no delay: + 0x00, 0x00, // XSTART = 0 + 0x00, 0x9F }, // XEND = 159 + + Rcmd2green144[] = { // 7735R init, part 2 (green 1.44 tab) + 2, // 2 commands in list: + ST77XX_CASET, 4, // 1: Column addr set, 4 args, no delay: + 0x00, 0x00, // XSTART = 0 + 0x00, 0x7F, // XEND = 127 + ST77XX_RASET, 4, // 2: Row addr set, 4 args, no delay: + 0x00, 0x00, // XSTART = 0 + 0x00, 0x7F }, // XEND = 127 + + Rcmd2green160x80[] = { // 7735R init, part 2 (mini 160x80) + 2, // 2 commands in list: + ST77XX_CASET, 4, // 1: Column addr set, 4 args, no delay: + 0x00, 0x00, // XSTART = 0 + 0x00, 0x4F, // XEND = 79 + ST77XX_RASET, 4, // 2: Row addr set, 4 args, no delay: + 0x00, 0x00, // XSTART = 0 + 0x00, 0x9F }, // XEND = 159 + + Rcmd2green160x80plugin[] = { // 7735R init, part 2 (mini 160x80 with plugin FPC) + 3, // 3 commands in list: + ST77XX_INVON, 0, // 1: Display is inverted + ST77XX_CASET, 4, // 2: Column addr set, 4 args, no delay: + 0x00, 0x00, // XSTART = 0 + 0x00, 0x4F, // XEND = 79 + ST77XX_RASET, 4, // 3: Row addr set, 4 args, no delay: + 0x00, 0x00, // XSTART = 0 + 0x00, 0x9F }, // XEND = 159 + + Rcmd3[] = { // 7735R init, part 3 (red or green tab) + 4, // 4 commands in list: + ST7735_GMCTRP1, 16 , // 1: Gamma Adjustments (pos. polarity), 16 args + delay: + 0x02, 0x1c, 0x07, 0x12, // (Not entirely necessary, but provides + 0x37, 0x32, 0x29, 0x2d, // accurate colors) + 0x29, 0x25, 0x2B, 0x39, + 0x00, 0x01, 0x03, 0x10, + ST7735_GMCTRN1, 16 , // 2: Gamma Adjustments (neg. polarity), 16 args + delay: + 0x03, 0x1d, 0x07, 0x06, // (Not entirely necessary, but provides + 0x2E, 0x2C, 0x29, 0x2D, // accurate colors) + 0x2E, 0x2E, 0x37, 0x3F, + 0x00, 0x00, 0x02, 0x10, + ST77XX_NORON, ST_CMD_DELAY, // 3: Normal display on, no args, w/delay + 10, // 10 ms delay + ST77XX_DISPON, ST_CMD_DELAY, // 4: Main screen turn on, no args w/delay + 100 }; // 100 ms delay + +static int16_t _xstart = 0; ///< Internal framebuffer X offset +static int16_t _ystart = 0; ///< Internal framebuffer Y offset +static uint8_t _colstart = 0; ///< Some displays need this changed to offset +static uint8_t _rowstart = 0; ///< Some displays need this changed to offset +static uint8_t rotation = 0; +static int16_t _width = 0; ///< Display width as modified by current rotation +static int16_t _height = 0; ///< Display height as modified by current rotation + +static void set_CS(uint8_t level) { + //if (_cs != (uint8_t) -1) { + digitalWrite(PIN_TFT_CS, level); + //} +} +static void sendCommand(uint8_t com) { + set_CS(HIGH); + digitalWrite(PIN_TFT_DC, LOW); + set_CS(LOW); + _spi->beginTransaction(_spiSettings); + _spi->transfer(com); + _spi->endTransaction(); + set_CS(HIGH); + digitalWrite(PIN_TFT_DC, HIGH); +} + +static void WriteData(uint8_t data) { + digitalWrite(PIN_TFT_CS, LOW); + _spi->beginTransaction(_spiSettings); + _spi->transfer(data); + _spi->endTransaction(); + digitalWrite(PIN_TFT_CS, HIGH); +} +static void SPI_WRITE32(uint32_t l) { + _spi->transfer(l >> 24); + _spi->transfer(l >> 16); + _spi->transfer(l >> 8); + _spi->transfer(l); +} +static void writeCommand(uint8_t cmd) { + digitalWrite(PIN_TFT_DC, LOW); + _spi->transfer(cmd); + digitalWrite(PIN_TFT_DC, HIGH); +} + +static void displayInit(const uint8_t *addr) { + uint8_t numCommands, cmd, numArgs; + uint16_t ms; + + numCommands = pgm_read_byte(addr++); // Number of commands to follow + while (numCommands--) { // For each command... + cmd = pgm_read_byte(addr++); // Read command + numArgs = pgm_read_byte(addr++); // Number of args to follow + ms = numArgs & ST_CMD_DELAY; // If hibit set, delay follows args + numArgs &= ~ST_CMD_DELAY; // Mask out delay bit + sendCommand(cmd); + for (int k = 0; k < numArgs; k++) { + WriteData(addr[k]); + } + addr += numArgs; + + if (ms) { + ms = pgm_read_byte(addr++); // Read post-command delay time (ms) + if (ms == 255) + ms = 500; // If 255, delay for 500 ms + delay(ms); + } + } +} + +static void setRotation(uint8_t m) { + uint8_t madctl = 0; + + rotation = m & 3; // can't be higher than 3 + + switch (rotation) { + case 0: + madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY | ST7735_MADCTL_BGR; + + _height = 160; + _width = 80; + _xstart = _colstart; + _ystart = _rowstart; + break; + case 1: + madctl = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV | ST7735_MADCTL_BGR; + + _width = 160; + _height = 80; + _ystart = _colstart; + _xstart = _rowstart; + break; + case 2: + madctl = ST7735_MADCTL_BGR; + + _height = 160; + _width = 80; + _xstart = _colstart; + _ystart = _rowstart; + break; + case 3: + madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MV | ST7735_MADCTL_BGR; + + _width = 160; + _height = 80; + _ystart = _colstart; + _xstart = _rowstart; + break; + } + + sendCommand(ST77XX_MADCTL); + WriteData(madctl); +} + +static void setAddrWindow(uint16_t x, uint16_t y, uint16_t w, uint16_t h) { + x += _xstart; + y += _ystart; + uint32_t xa = ((uint32_t)x << 16) | (x + w - 1); + uint32_t ya = ((uint32_t)y << 16) | (y + h - 1); + + writeCommand(ST77XX_CASET); // Column addr set + SPI_WRITE32(xa); + + writeCommand(ST77XX_RASET); // Row addr set + SPI_WRITE32(ya); + + writeCommand(ST77XX_RAMWR); // write to RAM +} #define SCALE_X 1.25f // 160 / 128 #define SCALE_Y 1.25f // 80 / 64 +static TFT_eSprite *sprite = NULL; + bool ST7735Display::i2c_probe(TwoWire& wire, uint8_t addr) { return true; /* @@ -16,35 +408,69 @@ bool ST7735Display::i2c_probe(TwoWire& wire, uint8_t addr) { */ } +#ifndef PIN_TFT_LEDA_CTL_ACTIVE + #define PIN_TFT_LEDA_CTL_ACTIVE HIGH +#endif + bool ST7735Display::begin() { if (!_isOn) { if (_peripher_power) _peripher_power->claim(); - pinMode(PIN_TFT_LEDA_CTL, OUTPUT); -#if defined(PIN_TFT_LEDA_CTL_ACTIVE) - digitalWrite(PIN_TFT_LEDA_CTL, PIN_TFT_LEDA_CTL_ACTIVE); + delay(3000); // TEMP!! + pinMode(PIN_TFT_RST, OUTPUT); + pinMode(PIN_TFT_CS, OUTPUT); + pinMode(PIN_TFT_DC, OUTPUT); + + // Pulse Reset low for 10ms + digitalWrite(PIN_TFT_RST, HIGH); + delay(1); + digitalWrite(PIN_TFT_RST, LOW); + delay(10); + digitalWrite(PIN_TFT_RST, HIGH); +#ifdef ESP_PLATFORM + _spi->begin(_clk,_miso,_mosi,-1); #else - digitalWrite(PIN_TFT_LEDA_CTL, HIGH); + _spi->begin(); #endif + _spi->setClockDivider(SPI_CLOCK_DIV2); + + pinMode(PIN_TFT_LEDA_CTL, OUTPUT); + digitalWrite(PIN_TFT_LEDA_CTL, PIN_TFT_LEDA_CTL_ACTIVE); digitalWrite(PIN_TFT_RST, HIGH); -#if defined(HELTEC_T1) - display.initR(INITR_MINI160x80); - display.setRotation(DISPLAY_ROTATION); -#elif defined(HELTEC_TRACKER_V2) || defined(HELTEC_T096) - display.initR(INITR_MINI160x80); - display.setRotation(DISPLAY_ROTATION); - uint8_t madctl = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV |ST7735_MADCTL_BGR;//Adjust color to BGR - display.sendCommand(ST77XX_MADCTL, &madctl, 1); -#else - display.initR(INITR_MINI160x80_PLUGIN); - display.setRotation(DISPLAY_ROTATION); + displayInit(Rcmd1); + + _height = 80; + _width = 160; + _colstart = 24; + _rowstart = 0; + +#if defined(HELTEC_TRACKER_V2) || defined(HELTEC_T096) + displayInit(Rcmd2green160x80); + //uint8_t madctl = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV |ST7735_MADCTL_BGR;//Adjust color to BGR + //display.sendCommand(ST77XX_MADCTL, &madctl, 1); #endif - display.setSPISpeed(40000000); - display.fillScreen(ST77XX_BLACK); - display.setTextColor(ST77XX_WHITE); - display.setTextSize(2); - display.cp437(true); // Use full 256 char 'Code Page 437' font + + displayInit(Rcmd3); + + setRotation(DISPLAY_ROTATION); + + sendCommand(ST77XX_DISPON); + + if (!sprite) { + // alloc offscreen canvas + sprite = new TFT_eSprite(&lcd); + if (sprite) { + if (sprite->createSprite(160, 80)) { + sprite->fillScreen(ST77XX_BLACK); + sprite->setTextColor(curr_color = ST77XX_WHITE); + } else { + Serial.printf("ST7735Display: failed to alloc canvas pixels"); + } + } else { + Serial.printf("ST7735Display: failed to alloc canvas"); + } + } _isOn = true; } @@ -52,17 +478,22 @@ bool ST7735Display::begin() { } void ST7735Display::turnOn() { - ST7735Display::begin(); + if (!_isOn) { + sendCommand(ST77XX_DISPON); + + // Now turn on the backlight + digitalWrite(PIN_TFT_LEDA_CTL, PIN_TFT_LEDA_CTL_ACTIVE); + _isOn = true; + } } void ST7735Display::turnOff() { if (_isOn) { - digitalWrite(PIN_TFT_RST, LOW); -#if defined(PIN_TFT_LEDA_CTL_ACTIVE) + sendCommand(ST77XX_DISPOFF); + + //digitalWrite(PIN_TFT_RST, LOW); + // Now turn off the backlight digitalWrite(PIN_TFT_LEDA_CTL, !PIN_TFT_LEDA_CTL_ACTIVE); -#else - digitalWrite(PIN_TFT_LEDA_CTL, LOW); -#endif _isOn = false; if (_peripher_power) _peripher_power->release(); @@ -70,78 +501,90 @@ void ST7735Display::turnOff() { } void ST7735Display::clear() { - //Serial.println("DBG: display.Clear"); - display.fillScreen(ST77XX_BLACK); + sprite->fillScreen(ST77XX_BLACK); } void ST7735Display::startFrame(Color bkg) { - display.fillScreen(0x00); - display.setTextColor(ST77XX_WHITE); - display.setTextSize(1); // This one affects size of Please wait... message - display.cp437(true); // Use full 256 char 'Code Page 437' font + sprite->fillScreen(ST77XX_BLACK); + sprite->setTextColor(curr_color = ST77XX_WHITE); + //sprite->setFreeFont(&FreeSans7pt7b); + sprite->setTextSize(1); // This one affects size of Please wait... message + //sprite->cp437(true); // Use full 256 char 'Code Page 437' font } void ST7735Display::setTextSize(int sz) { - display.setTextSize(sz); + sprite->setTextSize(sz); } void ST7735Display::setColor(Color c) { switch (c) { case DisplayDriver::DARK : - _color = ST77XX_BLACK; + curr_color = ST77XX_BLACK; break; case DisplayDriver::LIGHT : - _color = ST77XX_WHITE; + curr_color = ST77XX_WHITE; break; case DisplayDriver::RED : - _color = ST77XX_RED; + curr_color = ST77XX_RED; break; case DisplayDriver::GREEN : - _color = ST77XX_GREEN; + curr_color = ST77XX_GREEN; break; case DisplayDriver::BLUE : - _color = ST77XX_BLUE; + curr_color = ST77XX_BLUE; break; case DisplayDriver::YELLOW : - _color = ST77XX_YELLOW; + curr_color = ST77XX_YELLOW; break; case DisplayDriver::ORANGE : - _color = ST77XX_ORANGE; + curr_color = ST77XX_ORANGE; break; default: - _color = ST77XX_WHITE; + curr_color = ST77XX_WHITE; break; } - display.setTextColor(_color); + sprite->setTextColor(curr_color); } void ST7735Display::setCursor(int x, int y) { - display.setCursor(x*SCALE_X, y*SCALE_Y); + sprite->setCursor(x*SCALE_X, y*SCALE_Y); } void ST7735Display::print(const char* str) { - display.print(str); + sprite->print(str); } void ST7735Display::fillRect(int x, int y, int w, int h) { - display.fillRect(x*SCALE_X, y*SCALE_Y, w*SCALE_X, h*SCALE_Y, _color); + sprite->fillRect(x*SCALE_X, y*SCALE_Y, w*SCALE_X, h*SCALE_Y, curr_color); } void ST7735Display::drawRect(int x, int y, int w, int h) { - display.drawRect(x*SCALE_X, y*SCALE_Y, w*SCALE_X, h*SCALE_Y, _color); + sprite->drawRect(x*SCALE_X, y*SCALE_Y, w*SCALE_X, h*SCALE_Y, curr_color); } void ST7735Display::drawXbm(int x, int y, const uint8_t* bits, int w, int h) { - display.drawBitmap(x*SCALE_X, y*SCALE_Y, bits, w, h, _color); + sprite->drawBitmap(x*SCALE_X, y*SCALE_Y, bits, w, h, curr_color); } uint16_t ST7735Display::getTextWidth(const char* str) { - int16_t x1, y1; - uint16_t w, h; - display.getTextBounds(str, 0, 0, &x1, &y1, &w, &h); - return w / SCALE_X; + return sprite->textWidth(str) / SCALE_X; } void ST7735Display::endFrame() { - // display.display(); + // blit the canvas buffer to LCD + set_CS(LOW); + _spi->beginTransaction(_spiSettings); + uint16_t x, y; + uint16_t* pixels = (uint16_t *) ((TFT_eSprite *) sprite)->getPointer(); + for (y = 0; y < 80; y++, pixels += 160) { + setAddrWindow(0, y, 160, 1); +#ifdef ESP_PLATFORM + _spi->transferBytes((uint8_t *)pixels, NULL, 2 * 160); +#else + _spi->transfer(pixels, NULL, 2 * 160); +#endif + } + + _spi->endTransaction(); + set_CS(HIGH); } diff --git a/src/helpers/ui/ST7735Display.h b/src/helpers/ui/ST7735Display.h index 94797503f..08778efd0 100644 --- a/src/helpers/ui/ST7735Display.h +++ b/src/helpers/ui/ST7735Display.h @@ -3,28 +3,25 @@ #include "DisplayDriver.h" #include #include -#include -#include +#include "TFT_eSPI.h" #include class ST7735Display : public DisplayDriver { - Adafruit_ST7735 display; bool _isOn; - uint16_t _color; RefCountedDigitalPin* _peripher_power; bool i2c_probe(TwoWire& wire, uint8_t addr); public: #ifdef USE_PIN_TFT ST7735Display(RefCountedDigitalPin* peripher_power=NULL) : DisplayDriver(128, 64), - display(PIN_TFT_CS, PIN_TFT_DC, PIN_TFT_SDA, PIN_TFT_SCL, PIN_TFT_RST), + // display(PIN_TFT_CS, PIN_TFT_DC, PIN_TFT_SDA, PIN_TFT_SCL, PIN_TFT_RST), _peripher_power(peripher_power) { _isOn = false; } #else ST7735Display(RefCountedDigitalPin* peripher_power=NULL) : DisplayDriver(128, 64), - display(&SPI1, PIN_TFT_CS, PIN_TFT_DC, PIN_TFT_RST), + // display(&SPI1, PIN_TFT_CS, PIN_TFT_DC, PIN_TFT_RST), _peripher_power(peripher_power) { _isOn = false; diff --git a/variants/heltec_t096/platformio.ini b/variants/heltec_t096/platformio.ini index e820bf58d..0a062f00b 100644 --- a/variants/heltec_t096/platformio.ini +++ b/variants/heltec_t096/platformio.ini @@ -51,7 +51,7 @@ build_src_filter = ${nrf52_base.build_src_filter} lib_deps = ${nrf52_base.lib_deps} ${sensor_base.lib_deps} - adafruit/Adafruit ST7735 and ST7789 Library @ ^1.11.0 + bodmer/TFT_eSPI @ ^2.4.31 debug_tool = jlink upload_protocol = nrfutil