# Wokwi Library List
# See https://docs.wokwi.com/guides/libraries

Adafruit ST7735 and ST7789 Library


libraries.txt

/**************************************************************************
  This is a library for several Adafruit displays based on ST77* drivers.

  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
  The 1.14" TFT breakout
  ----> https://www.adafruit.com/product/4383
  The 1.3" TFT breakout
  ----> https://www.adafruit.com/product/4313
  The 1.54" TFT breakout
    ----> https://www.adafruit.com/product/3787
  The 1.69" TFT breakout
    ----> https://www.adafruit.com/product/5206
  The 2.0" TFT breakout
    ----> https://www.adafruit.com/product/4311
  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_GFX.h>    // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
#include <SPI.h>

#if defined(ARDUINO_FEATHER_ESP32) // Feather Huzzah32
  #define TFT_CS         14
  #define TFT_RST        15
  #define TFT_DC         32

#elif defined(ESP8266)
  #define TFT_CS         4
  #define TFT_RST        16                                            
  #define TFT_DC         5

#else
  // For the breakout board, you can use any 2 or 3 pins.
  // These pins will also work for the 1.8" TFT shield.
  #define TFT_CS        10
  #define TFT_RST        -1 // Or set to -1 and connect to Arduino RESET pin
  #define TFT_DC         9
#endif

// OPTION 1 (recommended) is to use the HARDWARE SPI pins, which are unique
// to each board and not reassignable. For Arduino Uno: MOSI = pin 11 and
// SCLK = pin 13. This is the fastest mode of operation and is required if
// using the breakout board's microSD card.

// For 1.44" and 1.8" TFT with ST7735 use:
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

// For 1.14", 1.3", 1.54", 1.69", and 2.0" TFT with ST7789:
//Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);


// OPTION 2 lets you interface the display using ANY TWO or THREE PINS,
// tradeoff being that performance is not as fast as hardware SPI above.
//#define TFT_MOSI 11  // Data out
//#define TFT_SCLK 13  // Clock out

// For ST7735-based displays, we will use this call
//Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);

// OR for the ST7789-based displays, we will use this call
//Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);


float p = 3.1415926;

void setup(void) {
  Serial.begin(9600);
  Serial.print(F("Hello! ST77xx TFT Test"));

  // Use this initializer if using a 1.8" TFT screen:
  tft.initR(INITR_BLACKTAB);      // Init ST7735S chip, black tab

  // OR use this initializer if using a 1.8" TFT screen with offset such as WaveShare:
  // tft.initR(INITR_GREENTAB);      // Init ST7735S chip, green tab

  // OR use this initializer (uncomment) if using a 1.44" TFT:
  //tft.initR(INITR_144GREENTAB); // Init ST7735R chip, green tab

  // OR use this initializer (uncomment) if using a 0.96" 160x80 TFT:
  //tft.initR(INITR_MINI160x80);  // Init ST7735S mini display
  // OR use this initializer (uncomment) if using a 0.96" 160x80 TFT with 
  // plug-in FPC (if you see the display is inverted!)
  //tft.initR(INITR_MINI160x80_PLUGIN);  // Init ST7735S mini display

  // OR use this initializer (uncomment) if using a 1.3" or 1.54" 240x240 TFT:
  //tft.init(240, 240);           // Init ST7789 240x240

  // OR use this initializer (uncomment) if using a 1.69" 280x240 TFT:
  //tft.init(240, 280);           // Init ST7789 280x240

  // OR use this initializer (uncomment) if using a 2.0" 320x240 TFT:
  //tft.init(240, 320);           // Init ST7789 320x240

  // OR use this initializer (uncomment) if using a 1.14" 240x135 TFT:
  //tft.init(135, 240);           // Init ST7789 240x135
  
  // OR use this initializer (uncomment) if using a 1.47" 172x320 TFT:
  //tft.init(172, 320);           // Init ST7789 172x320

  // SPI speed defaults to SPI_DEFAULT_FREQ defined in the library, you can override it here
  // Note that speed allowable depends on chip and quality of wiring, if you go too fast, you
  // may end up with a black screen some times, or all the time.
  //tft.setSPISpeed(40000000);

  Serial.println(F("Initialized"));
  tft.drawPixel(0, 0, 0xffff);
  return;
  uint16_t time = millis();
  tft.fillScreen(ST77XX_BLACK);
  time = millis() - time;

  Serial.println(time, DEC);
  delay(500);

  // large block of text
  tft.fillScreen(ST77XX_BLACK);
  testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ", ST77XX_WHITE);
  delay(1000);

  // tft print function!
  tftPrintTest();
  delay(4000);

  // a single pixel
  tft.drawPixel(tft.width()/2, tft.height()/2, ST77XX_GREEN);
  delay(500);

  // line draw test
  testlines(ST77XX_YELLOW);
  delay(500);

  // optimized lines
  testfastlines(ST77XX_RED, ST77XX_BLUE);
  delay(500);

  testdrawrects(ST77XX_GREEN);
  delay(500);

  testfillrects(ST77XX_YELLOW, ST77XX_MAGENTA);
  delay(500);

  tft.fillScreen(ST77XX_BLACK);
  testfillcircles(10, ST77XX_BLUE);
  testdrawcircles(10, ST77XX_WHITE);
  delay(500);

  testroundrects();
  delay(500);

  testtriangles();
  delay(500);

  mediabuttons();
  delay(500);

  Serial.println("done");
  delay(1000);
}

void loop() {
  return;
  tft.invertDisplay(true);
  delay(500);
  tft.invertDisplay(false);
  delay(500);
}

void testlines(uint16_t color) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(0, 0, x, tft.height()-1, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(0, 0, tft.width()-1, y, color);
    delay(0);
  }

  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(tft.width()-1, 0, x, tft.height()-1, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(tft.width()-1, 0, 0, y, color);
    delay(0);
  }

  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(0, tft.height()-1, x, 0, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(0, tft.height()-1, tft.width()-1, y, color);
    delay(0);
  }

  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(tft.width()-1, tft.height()-1, x, 0, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(tft.width()-1, tft.height()-1, 0, y, color);
    delay(0);
  }
}

void testdrawtext(char *text, uint16_t color) {
  tft.setCursor(0, 0);
  tft.setTextColor(color);
  tft.setTextWrap(true);
  tft.print(text);
}

void testfastlines(uint16_t color1, uint16_t color2) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t y=0; y < tft.height(); y+=5) {
    tft.drawFastHLine(0, y, tft.width(), color1);
  }
  for (int16_t x=0; x < tft.width(); x+=5) {
    tft.drawFastVLine(x, 0, tft.height(), color2);
  }
}

void testdrawrects(uint16_t color) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color);
  }
}

void testfillrects(uint16_t color1, uint16_t color2) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=tft.width()-1; x > 6; x-=6) {
    tft.fillRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color1);
    tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color2);
  }
}

void testfillcircles(uint8_t radius, uint16_t color) {
  for (int16_t x=radius; x < tft.width(); x+=radius*2) {
    for (int16_t y=radius; y < tft.height(); y+=radius*2) {
      tft.fillCircle(x, y, radius, color);
    }
  }
}

void testdrawcircles(uint8_t radius, uint16_t color) {
  for (int16_t x=0; x < tft.width()+radius; x+=radius*2) {
    for (int16_t y=0; y < tft.height()+radius; y+=radius*2) {
      tft.drawCircle(x, y, radius, color);
    }
  }
}

void testtriangles() {
  tft.fillScreen(ST77XX_BLACK);
  uint16_t color = 0xF800;
  int t;
  int w = tft.width()/2;
  int x = tft.height()-1;
  int y = 0;
  int z = tft.width();
  for(t = 0 ; t <= 15; t++) {
    tft.drawTriangle(w, y, y, x, z, x, color);
    x-=4;
    y+=4;
    z-=4;
    color+=100;
  }
}

void testroundrects() {
  tft.fillScreen(ST77XX_BLACK);
  uint16_t color = 100;
  int i;
  int t;
  for(t = 0 ; t <= 4; t+=1) {
    int x = 0;
    int y = 0;
    int w = tft.width()-2;
    int h = tft.height()-2;
    for(i = 0 ; i <= 16; i+=1) {
      tft.drawRoundRect(x, y, w, h, 5, color);
      x+=2;
      y+=3;
      w-=4;
      h-=6;
      color+=1100;
    }
    color+=100;
  }
}

void tftPrintTest() {
  tft.setTextWrap(false);
  tft.fillScreen(ST77XX_BLACK);
  tft.setCursor(0, 30);
  tft.setTextColor(ST77XX_RED);
  tft.setTextSize(1);
  tft.println("Hello World!");
  tft.setTextColor(ST77XX_YELLOW);
  tft.setTextSize(2);
  tft.println("Hello World!");
  tft.setTextColor(ST77XX_GREEN);
  tft.setTextSize(3);
  tft.println("Hello World!");
  tft.setTextColor(ST77XX_BLUE);
  tft.setTextSize(4);
  tft.print(1234.567);
  delay(1500);
  tft.setCursor(0, 0);
  tft.fillScreen(ST77XX_BLACK);
  tft.setTextColor(ST77XX_WHITE);
  tft.setTextSize(0);
  tft.println("Hello World!");
  tft.setTextSize(1);
  tft.setTextColor(ST77XX_GREEN);
  tft.print(p, 6);
  tft.println(" Want pi?");
  tft.println(" ");
  tft.print(8675309, HEX); // print 8,675,309 out in HEX!
  tft.println(" Print HEX!");
  tft.println(" ");
  tft.setTextColor(ST77XX_WHITE);
  tft.println("Sketch has been");
  tft.println("running for: ");
  tft.setTextColor(ST77XX_MAGENTA);
  tft.print(millis() / 1000);
  tft.setTextColor(ST77XX_WHITE);
  tft.print(" seconds.");
}

void mediabuttons() {
  // play
  tft.fillScreen(ST77XX_BLACK);
  tft.fillRoundRect(25, 10, 78, 60, 8, ST77XX_WHITE);
  tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_RED);
  delay(500);
  // pause
  tft.fillRoundRect(25, 90, 78, 60, 8, ST77XX_WHITE);
  tft.fillRoundRect(39, 98, 20, 45, 5, ST77XX_GREEN);
  tft.fillRoundRect(69, 98, 20, 45, 5, ST77XX_GREEN);
  delay(500);
  // play color
  tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_BLUE);
  delay(50);
  // pause color
  tft.fillRoundRect(39, 98, 20, 45, 5, ST77XX_RED);
  tft.fillRoundRect(69, 98, 20, 45, 5, ST77XX_RED);
  // play color
  tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_GREEN);
}

test.ino

spilog

spilog.chip.json

#include "wokwi-api.h"
#include <stdio.h>
#include <stdlib.h>

typedef struct {
  spi_dev_t spi;
  uint8_t spi_buffer[10];
  pin_t cs_pin;
  pin_t dc_pin;
  uint8_t dc_pin_state;
} chip_state_t;

static void chip_pin_change(void *user_data, pin_t pin, uint32_t value) {
  chip_state_t *chip = (chip_state_t*)user_data;
  //if (pin == chip->dc_pin)
  chip->dc_pin_state = pin_read(chip->dc_pin);
  if (pin == chip->cs_pin) {
    if (value == LOW)
      spi_start(chip->spi, chip->spi_buffer, sizeof(chip->spi_buffer));
    else
      spi_stop(chip->spi);
  }
}

static void chip_spi_done(void *user_data, uint8_t *buffer, uint32_t count) {
  chip_state_t *chip = (chip_state_t*)user_data;
  //printf("count: %d\n", count);
  //chip->dc_pin_state = pin_read(chip->dc_pin);
    for (int i = 0; i < count; i++) {
    printf (chip->dc_pin_state == LOW ? "cmd" : "data");
    printf (" %02X\n", buffer[i]);
  }
  
  if (pin_read(chip->cs_pin) == LOW)
    spi_start(chip->spi, chip->spi_buffer, sizeof(chip->spi_buffer));
}

void chip_init(void) {
  chip_state_t *chip = malloc(sizeof(chip_state_t));
  chip->cs_pin = pin_init("CS", INPUT_PULLUP);
  chip->dc_pin = pin_init("DC", INPUT_PULLUP);
  const pin_watch_config_t watch_config = {
    .edge = BOTH,
    .pin_change = chip_pin_change,
    .user_data = chip,
  };
  pin_watch(chip->cs_pin, &watch_config);
  pin_watch(chip->dc_pin, &watch_config);
  const spi_config_t spi_config = {
    .sck = pin_init("CLK", INPUT),
    .mosi = pin_init("MOSI", INPUT),
    .miso = NO_PIN,
    .done = chip_spi_done,
    .user_data = chip,
  };
  chip->spi = spi_init(&spi_config);
}


spilog.chip.c

/*#ifndef _st7735_h
#define _st7735_h
#include "gpio.h"
#include <stdint.h>
#include <stdbool.h>

#ifdef __cplusplus
extern "C" {
#endif
void st7735_enable(pin_t cspin, pin_t dcpin);
void st7735_disable();
void st7735_set_pixel(uint16_t x, uint16_t y, uint16_t color);
#ifdef __cplusplus
}
#endif
#endif
*/

st7735.h

diagram.json

/*
#include "st7735.h"
#include "gpio.h"
#include "spi.h"
#include <stdint.h>
#include <stdbool.h>

#define BIT(x) (1<<x)

static pin_t _cspin;
static pin_t _dcpin;

typedef enum {
	NOP = 0x00,
	SOFTWARE_RESET = 0x01,
	READ_DISPLAY_ID = 0x04,
	READ_DISPLAY_STATUS = 0x09,
	READ_DISPLAY_POWER_MODE = 0xA,
	READ_MEMORY_ACCESS_CONTROL = 0x0B,
	READ_DISPLAY_PIXEL_FORMAT = 0xC,
	READ_DISPLAY_IMAGE_FORMAT = 0xD,
	READ_DISPLAY_SIGNAL_MODE = 0x0E,
	READ_SELF_DIAGNOSTIC = 0xF,
	//
	SLEEP_IN = 0x10,
	SLEEP_OUT = 0x11,
	PARTIAL_DISPLAY_MODE_ON = 0x12,
	NORMAL_DISPLAY_MODE_ON = 0x13,
	//
	DISPLAY_INVERSION_OFF = 0x20,
	DISPLAY_INVERSION_ON = 0x21,
	GAMMA_SET = 0x26,
	DISPLAY_OFF = 0x28,
	DISPLAY_ON = 0x29,
	COLUMN_ADDRESS_SET = 0x2a,
	ROW_ADDRESS_SET = 0x2b,
	MEMORY_WRITE = 0x2c,
	COLOR_SETTING = 0x2d,
	MEMORY_READ = 0x2e,
	//
	PARTIAL_AREA = 0x30,
	SCROLL_AREA_SET = 0x33,
	TEARING_EFFECT_LINE_OFF = 0x34,
	TEARING_EFFECT_LINE_ON = 0x35 ,
	MEMORY_ACCESS_CONTROL = 0x36,
	VERTICAL_SCROLL_START_ADDRESS = 0x37,
	IDLE_MODE_OFF = 0x38,
	IDLE_MODE_ON = 0x39,
	INTERFACE_PIXEL_FORMAT = 0x3A,
	//
	FRAME_RATE_CONTROL = 0xB1,
	FRAME_RATE_CONTROL2 = 0xB2,
	FRAME_RATE_CONTROL3 = 0xB3,
	DISPLAY_INVERSION_CONTROL = 0xB4,
	//
	POWER_CONTROL1 = 0xC0,
	POWER_CONTROL2 = 0xC1,
	POWER_CONTROL3 = 0xC2,
	POWER_CONTROL4 = 0xC3,
	POWER_CONTROL5 = 0xC4,
	VCOM_CONTROL1 = 0xC5,
	VCOM_OFFSET_CONTROL = 0xC7,
	//
	WRITE_ID2_VALUE = 0xD1,
	WRITE_ID3_VALUE = 0xD2,
	NVM_CONTROL_STATUS = 0xD9,
	READ_ID1_VALUE = 0xDA,
	READ_ID2_VALUE = 0xDB,
	READ_ID3_VALUE = 0xDC,
	NVM_READ_COMMAND = 0xDE,
	NVM_WRITE_COMMAND = 0xDF,
	//
	POSITIVE_GAMMA_CORRECTION = 0xE0,
	NEGATIVE_GAMMA_CORRECTION = 0xE1,
	//
	GATE_PUMP_CLOCK_FREQUENCY = 0xFC,
} st7735_command_t;

// MEMORY_ACCESS_CONTROL 0x0b
#define MY 7 // row address order 0=top to bottom, 1=bottom to top
#define MX 6 // column addres order 0=left to right, 1=right to left
#define MV 5 // row/column exchange
#define ML 4 // vertical refresh order
#define BGR 3 // rgb/grb order
#define MH 2 // horizontal refresh order
// DISPLAY_INVERSION_CONTROL 0xB4
#define NLC 0
#define NLB 1
#define NLA 2

static void transmit_command(st7735_command_t cmd) {
  pin_reset(_dcpin);
  pin_reset(_cspin);
	spi_transfer8(cmd);
  pin_set(_cspin);
}

static void transmit_data(uint8_t data) {
  pin_set(_dcpin);
  pin_reset(_cspin);
	spi_transfer8(data);
  pin_set(_cspin);
}

static void command(uint8_t cmd) {
	transmit_command(cmd);
}

static void command1(uint8_t cmd, uint8_t p1) {
	transmit_command(cmd);
	transmit_data(p1);
}

static void command2(uint8_t cmd, uint8_t p1, uint8_t p2) {
	transmit_command(cmd);
	transmit_data(p1);
	transmit_data(p2);
}

static void command3(uint8_t cmd, uint8_t p1, uint8_t p2, uint8_t p3) {
	transmit_command(cmd);
	transmit_data(p1);
	transmit_data(p2);
	transmit_data(p3);
}

static void command4(uint8_t cmd, uint8_t p1, uint8_t p2, uint8_t p3, uint8_t p4) {
	transmit_command(cmd);
	transmit_data(p1);
	transmit_data(p2);
	transmit_data(p3);
	transmit_data(p4);
}

static void command6(uint8_t cmd, uint8_t p1, uint8_t p2, uint8_t p3, uint8_t p4, uint8_t p5, uint8_t p6) {
	transmit_command(cmd);
	transmit_data(p1);
	transmit_data(p2);
	transmit_data(p3);
	transmit_data(p4);
	transmit_data(p5);
	transmit_data(p6);
}

void st7735_enable(pin_t cspin, pin_t dcpin) {
  pin_mode(_cspin, Output);
  pin_mode(_dcpin, Output);
	command(SOFTWARE_RESET);
	//_delay_ms(50);
	command(SLEEP_OUT);
	//_delay_ms(500);
	//_delay_ms(10);
	command3(FRAME_RATE_CONTROL,
      1,
      0x2C,
      0x2D);
	//_delay_ms(10);
	command3(FRAME_RATE_CONTROL2,
      1,
      0x2C,
      0x2D);
	command6(FRAME_RATE_CONTROL3,
    1, 0x2C, 0x2D,
    1, 0x2C, 0x2D);
  
  command1(DISPLAY_INVERSION_CONTROL, 7);

	command2(POWER_CONTROL1,
		0xA2, // avdd=5v, gvdd=4.6v
		0x02, // gvcl=-4.6v
		0x84); // mode=auto, vrhp5,vrhn5=0

	//_delay_ms(10);
	command1(POWER_CONTROL2,
			0xC5); // vgh25=2.4v vghbt=1(vgh=3*avdd-0.5) vgh=14.5v vgl=-10v

	command2(POWER_CONTROL3, // opamp curent in normal/full mode
		0x0A, // ap=small sap=medium-low
		0x00); // boost frequency
	command2(POWER_CONTROL4, // opamp current in idle/8-colors mode
		0x8A, // ap=small sap=medium-low
		0x2A); // boost frequency
	command2(POWER_CONTROL5, // opamp current in partial/full-color mode
		0x8A, // ap=small sap=medium-low
		0x2A); // boost frequency

	command2(VCOM_CONTROL1, 0x0E); // -0.775

	command(DISPLAY_INVERSION_OFF);

	command1(INTERFACE_PIXEL_FORMAT, 0x05); // 16bit/px

	command4(COLUMN_ADDRESS_SET, 0, 0, 0, 0x7F);
	command4(ROW_ADDRESS_SET, 0, 0, 0, 0x9F;

	// gamma 0xE0 02 1c 07 12 37 32 29 2d 29 25 2b 39 00 01 03 10
	// gamma 0xE1 03 1d 07 06 2e 2c 29 2d 2e 2e 37 3f 00 00 03 01

	command1(MEMORY_ACCESS_CONTROL, BIT(MX) | BIT(BGR));
	command(NORMAL_DISPLAY_MODE_ON);
	command(DISPLAY_ON);
	//_delay_ms(200);
}

void st7735_disable() {
	command(DISPLAY_OFF);
	command(SLEEP_IN);
}

void st7735_set_pixel(uint16_t x, uint16_t y, uint16_t color) {
	uint8_t xh = x >> 8, xl = x & 0xff;
	uint8_t yh = y >> 8, yl = y & 0xff;
	uint8_t ch = (uint16_t)color >> 8, cl = (uint16_t)(color & 0xff);
	command4(COLUMN_ADDRESS_SET, xh, xl, xh + 1, xl + 1);
	command4(ROW_ADDRESS_SET, yh, yl, yh + 1, yl + 1);
	command(MEMORY_WRITE);
	transmit_data(ch);
	transmit_data(cl);
}

*/
