#include "Adafruit_ST7735.h" #include "Adafruit_ST77xx.h" // CONSTRUCTORS ************************************************************ /*! @brief Instantiate Adafruit ST7735 driver with software SPI @param cs Chip select pin # @param dc Data/Command pin # @param mosi SPI MOSI pin # @param sclk SPI Clock pin # @param rst Reset pin # (optional, pass -1 if unused) */ Adafruit_ST7735::Adafruit_ST7735(int8_t cs, int8_t dc, int8_t mosi, int8_t sclk, int8_t rst) : Adafruit_ST77xx(ST7735_TFTWIDTH_128, ST7735_TFTHEIGHT_160, cs, dc, mosi, sclk, rst) {} /*! @brief Instantiate Adafruit ST7735 driver with default hardware SPI @param cs Chip select pin # @param dc Data/Command pin # @param rst Reset pin # (optional, pass -1 if unused) */ Adafruit_ST7735::Adafruit_ST7735(int8_t cs, int8_t dc, int8_t rst) : Adafruit_ST77xx(ST7735_TFTWIDTH_128, ST7735_TFTHEIGHT_160, cs, dc, rst) {} #if !defined(ESP8266) /*! @brief Instantiate Adafruit ST7735 driver with selectable hardware SPI @param spiClass Pointer to an SPI device to use (e.g. &SPI1) @param cs Chip select pin # @param dc Data/Command pin # @param rst Reset pin # (optional, pass -1 if unused) */ Adafruit_ST7735::Adafruit_ST7735(SPIClass *spiClass, int8_t cs, int8_t dc, int8_t rst) : Adafruit_ST77xx(ST7735_TFTWIDTH_128, ST7735_TFTHEIGHT_160, spiClass, cs, dc, rst) {} #endif // end !ESP8266 // SCREEN INITIALIZATION *************************************************** // 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. // 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 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 // clang-format on /**************************************************************************/ /*! @brief Initialization code common to all ST7735B displays */ /**************************************************************************/ void Adafruit_ST7735::initB(void) { commonInit(Bcmd); setRotation(0); } /**************************************************************************/ /*! @brief Initialization code common to all ST7735R displays @param options Tab color from adafruit purchase */ /**************************************************************************/ void Adafruit_ST7735::initR(uint8_t options) { commonInit(Rcmd1); if (options == INITR_GREENTAB) { displayInit(Rcmd2green); _colstart = 2; _rowstart = 1; } else if ((options == INITR_144GREENTAB) || (options == INITR_HALLOWING)) { _height = ST7735_TFTHEIGHT_128; _width = ST7735_TFTWIDTH_128; displayInit(Rcmd2green144); _colstart = 2; _rowstart = 3; // For default rotation 0 } else if (options == INITR_MINI160x80) { _height = ST7735_TFTWIDTH_80; _width = ST7735_TFTHEIGHT_160; displayInit(Rcmd2green160x80); _colstart = 24; _rowstart = 0; } else { // colstart, rowstart left at default '0' values displayInit(Rcmd2red); } displayInit(Rcmd3); // Black tab, change MADCTL color filter if ((options == INITR_BLACKTAB) || (options == INITR_MINI160x80)) { uint8_t data = 0xC0; sendCommand(ST77XX_MADCTL, &data, 1); } if (options == INITR_HALLOWING) { // Hallowing is simply a 1.44" green tab upside-down: tabcolor = INITR_144GREENTAB; setRotation(2); } else { tabcolor = options; setRotation(0); } } // OTHER FUNCTIONS ********************************************************* /**************************************************************************/ /*! @brief Set origin of (0,0) and orientation of TFT display @param m The index for rotation, from 0-3 inclusive */ /**************************************************************************/ void Adafruit_ST7735::setRotation(uint8_t m) { uint8_t madctl = 0; rotation = m & 3; // can't be higher than 3 // For ST7735 with GREEN TAB (including HalloWing)... if ((tabcolor == INITR_144GREENTAB) || (tabcolor == INITR_HALLOWING)) { // ..._rowstart is 3 for rotations 0&1, 1 for rotations 2&3 _rowstart = (rotation < 2) ? 3 : 1; } switch (rotation) { case 0: if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) { madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY | ST77XX_MADCTL_RGB; } else { madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY | ST7735_MADCTL_BGR; } if (tabcolor == INITR_144GREENTAB) { _height = ST7735_TFTHEIGHT_128; _width = ST7735_TFTWIDTH_128; } else if (tabcolor == INITR_MINI160x80) { _height = ST7735_TFTHEIGHT_160; _width = ST7735_TFTWIDTH_80; } else { _height = ST7735_TFTHEIGHT_160; _width = ST7735_TFTWIDTH_128; } _xstart = _colstart; _ystart = _rowstart; break; case 1: if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) { madctl = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV | ST77XX_MADCTL_RGB; } else { madctl = ST77XX_MADCTL_MY | ST77XX_MADCTL_MV | ST7735_MADCTL_BGR; } if (tabcolor == INITR_144GREENTAB) { _width = ST7735_TFTHEIGHT_128; _height = ST7735_TFTWIDTH_128; } else if (tabcolor == INITR_MINI160x80) { _width = ST7735_TFTHEIGHT_160; _height = ST7735_TFTWIDTH_80; } else { _width = ST7735_TFTHEIGHT_160; _height = ST7735_TFTWIDTH_128; } _ystart = _colstart; _xstart = _rowstart; break; case 2: if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) { madctl = ST77XX_MADCTL_RGB; } else { madctl = ST7735_MADCTL_BGR; } if (tabcolor == INITR_144GREENTAB) { _height = ST7735_TFTHEIGHT_128; _width = ST7735_TFTWIDTH_128; } else if (tabcolor == INITR_MINI160x80) { _height = ST7735_TFTHEIGHT_160; _width = ST7735_TFTWIDTH_80; } else { _height = ST7735_TFTHEIGHT_160; _width = ST7735_TFTWIDTH_128; } _xstart = _colstart; _ystart = _rowstart; break; case 3: if ((tabcolor == INITR_BLACKTAB) || (tabcolor == INITR_MINI160x80)) { madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MV | ST77XX_MADCTL_RGB; } else { madctl = ST77XX_MADCTL_MX | ST77XX_MADCTL_MV | ST7735_MADCTL_BGR; } if (tabcolor == INITR_144GREENTAB) { _width = ST7735_TFTHEIGHT_128; _height = ST7735_TFTWIDTH_128; } else if (tabcolor == INITR_MINI160x80) { _width = ST7735_TFTHEIGHT_160; _height = ST7735_TFTWIDTH_80; } else { _width = ST7735_TFTHEIGHT_160; _height = ST7735_TFTWIDTH_128; } _ystart = _colstart; _xstart = _rowstart; break; } sendCommand(ST77XX_MADCTL, &madctl, 1); }