For a while, I have been trying to interface a 1.8 TFT ST7735 to my STM32F103C8 bluepill using SPI2 and HAL. I tried SPI1 and has worked perfectly, but because I am interfacing LoRa to the bluepill using SPI1, I have to use SPI2 for the TFT. I don't want to use many slaves on the same SPI1, it may affect the performance of LoRa. I searched on the net for some examples about SPI2 but I couldn't find something. So please if someone know how to get it to work or has an idea please share it with me. I am using STM32CubeMX and Keil IDE to code.
Capture for SPI2:
There is no toggling only first when I reset the bluepill
I have debug it using Keil and find out that it hangs in HAL_SPI_Transmit() function. In this function it initializes everything correctly or it seems like that. After that it tries to send data ( 8 bit mode ) it hangs in timeout because the TXE flag is not set.
The tutorial I use: Controllertech - ST7735 1.8″ TFT Display with STM32
And the main code:
#include "main.h"
#include "spi.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <string.h>
#include "st7735.h"
#include "GFX_FUNCTIONS.h"
#include "fonts.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_SPI2_Init();
/* USER CODE BEGIN 2 */
ST7735_Init();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
ST7735_FillScreen(ST7735_BLACK);
ST7735_WriteString(3*18, 10, "Hello", Font_7x10, ST7735_RED, ST7735_BLACK);
ST7735_WriteString(5, 3*10, "from", Font_11x18, ST7735_GREEN, ST7735_BLACK);
ST7735_WriteString(0, 3*10+3*10, "Kurdistan", Font_16x26, ST7735_YELLOW, ST7735_BLACK);
HAL_Delay(3000);
ST7735_FillScreen(ST7735_BLACK);
drawCircle(50, 55, 20, ST7735_GREEN);
drawCircle(50, 55, 21, ST7735_GREEN);
drawCircle(50, 55, 22, ST7735_GREEN);
drawCircle(50, 55, 23, ST7735_GREEN);
drawCircle(50, 55, 24, ST7735_GREEN);
drawCircle(50, 55, 25, ST7735_RED);
drawCircle(50, 55, 26, ST7735_RED);
drawCircle(50, 55, 27, ST7735_RED);
drawCircle(50, 55, 28, ST7735_RED);
HAL_Delay(4000);
}
/* USER CODE END 3 */
}
The header file st7735.h:
#ifndef __ST7735_H__
#define __ST7735_H__
#include "fonts.h"
#include "stm32f1xx_hal.h"
#include <stdbool.h>
#define ST7735_MADCTL_MY 0x80
#define ST7735_MADCTL_MX 0x40
#define ST7735_MADCTL_MV 0x20
#define ST7735_MADCTL_ML 0x10
#define ST7735_MADCTL_RGB 0x00
#define ST7735_MADCTL_BGR 0x08
#define ST7735_MADCTL_MH 0x04
/*** Redefine if necessary ***/
#define ST7735_SPI_PORT hspi2
extern SPI_HandleTypeDef ST7735_SPI_PORT;
#define ST7735_RES_Pin GPIO_PIN_10
#define ST7735_RES_GPIO_Port GPIOB
#define ST7735_CS_Pin GPIO_PIN_1
#define ST7735_CS_GPIO_Port GPIOB
#define ST7735_DC_Pin GPIO_PIN_0
#define ST7735_DC_GPIO_Port GPIOB
//#define ST7735_SPI_PORT hspi2
//extern SPI_HandleTypeDef ST7735_SPI_PORT;
//
//#define ST7735_RES_Pin GPIO_PIN_2
//#define ST7735_RES_GPIO_Port GPIOA
//#define ST7735_CS_Pin GPIO_PIN_4
//#define ST7735_CS_GPIO_Port GPIOA
//#define ST7735_DC_Pin GPIO_PIN_3
//#define ST7735_DC_GPIO_Port GPIOA
// AliExpress/eBay 1.8" display, default orientation
#define ST7735_IS_160X128 1
#define ST7735_WIDTH 128
#define ST7735_HEIGHT 160
#define ST7735_XSTART 0
#define ST7735_YSTART 0
#define ST7735_ROTATION (ST7735_MADCTL_MX | ST7735_MADCTL_MY)
// AliExpress/eBay 1.8" display, rotate right
/*
#define ST7735_IS_160X128 1
#define ST7735_WIDTH 160
#define ST7735_HEIGHT 128
#define ST7735_XSTART 0
#define ST7735_YSTART 0
#define ST7735_ROTATION (ST7735_MADCTL_MY | ST7735_MADCTL_MV)
*/
// AliExpress/eBay 1.8" display, rotate left
/*
#define ST7735_IS_160X128 1
#define ST7735_WIDTH 160
#define ST7735_HEIGHT 128
#define ST7735_XSTART 0
#define ST7735_YSTART 0
#define ST7735_ROTATION (ST7735_MADCTL_MX | ST7735_MADCTL_MV)
*/
// AliExpress/eBay 1.8" display, upside down
/*
#define ST7735_IS_160X128 1
#define ST7735_WIDTH 128
#define ST7735_HEIGHT 160
#define ST7735_XSTART 0
#define ST7735_YSTART 0
#define ST7735_ROTATION (0)
*/
// WaveShare ST7735S-based 1.8" display, default orientation
/*
#define ST7735_IS_160X128 1
#define ST7735_WIDTH 128
#define ST7735_HEIGHT 160
#define ST7735_XSTART 2
#define ST7735_YSTART 1
#define ST7735_ROTATION (ST7735_MADCTL_MX | ST7735_MADCTL_MY | ST7735_MADCTL_RGB)
*/
// WaveShare ST7735S-based 1.8" display, rotate right
/*
#define ST7735_IS_160X128 1
#define ST7735_WIDTH 160
#define ST7735_HEIGHT 128
#define ST7735_XSTART 1
#define ST7735_YSTART 2
#define ST7735_ROTATION (ST7735_MADCTL_MY | ST7735_MADCTL_MV | ST7735_MADCTL_RGB)
*/
// WaveShare ST7735S-based 1.8" display, rotate left
/*
#define ST7735_IS_160X128 1
#define ST7735_WIDTH 160
#define ST7735_HEIGHT 128
#define ST7735_XSTART 1
#define ST7735_YSTART 2
#define ST7735_ROTATION (ST7735_MADCTL_MX | ST7735_MADCTL_MV | ST7735_MADCTL_RGB)
*/
// WaveShare ST7735S-based 1.8" display, upside down
/*
#define ST7735_IS_160X128 1
#define ST7735_WIDTH 128
#define ST7735_HEIGHT 160
#define ST7735_XSTART 2
#define ST7735_YSTART 1
#define ST7735_ROTATION (ST7735_MADCTL_RGB)
*/
// 1.44" display, default orientation
//#define ST7735_IS_128X128 1
//#define ST7735_WIDTH 128
//#define ST7735_HEIGHT 128
//#define ST7735_XSTART 2
//#define ST7735_YSTART 3
//#define ST7735_ROTATION (ST7735_MADCTL_MX | ST7735_MADCTL_MY | ST7735_MADCTL_BGR)
// 1.44" display, rotate right
/*
#define ST7735_IS_128X128 1
#define ST7735_WIDTH 128
#define ST7735_HEIGHT 128
#define ST7735_XSTART 3
#define ST7735_YSTART 2
#define ST7735_ROTATION (ST7735_MADCTL_MY | ST7735_MADCTL_MV | ST7735_MADCTL_BGR)
*/
// 1.44" display, rotate left
/*
#define ST7735_IS_128X128 1
#define ST7735_WIDTH 128
#define ST7735_HEIGHT 128
#define ST7735_XSTART 1
#define ST7735_YSTART 2
#define ST7735_ROTATION (ST7735_MADCTL_MX | ST7735_MADCTL_MV | ST7735_MADCTL_BGR)
*/
// 1.44" display, upside down
/*
#define ST7735_IS_128X128 1
#define ST7735_WIDTH 128
#define ST7735_HEIGHT 128
#define ST7735_XSTART 2
#define ST7735_YSTART 1
#define ST7735_ROTATION (ST7735_MADCTL_BGR)
*/
// mini 160x80 display (it's unlikely you want the default orientation)
/*
#define ST7735_IS_160X80 1
#define ST7735_XSTART 26
#define ST7735_YSTART 1
#define ST7735_WIDTH 80
#define ST7735_HEIGHT 160
#define ST7735_ROTATION (ST7735_MADCTL_MX | ST7735_MADCTL_MY | ST7735_MADCTL_BGR)
*/
// mini 160x80, rotate left
/*
#define ST7735_IS_160X80 1
#define ST7735_XSTART 1
#define ST7735_YSTART 26
#define ST7735_WIDTH 160
#define ST7735_HEIGHT 80
#define ST7735_ROTATION (ST7735_MADCTL_MX | ST7735_MADCTL_MV | ST7735_MADCTL_BGR)
*/
// mini 160x80, rotate right
/*
#define ST7735_IS_160X80 1
#define ST7735_XSTART 1
#define ST7735_YSTART 26
#define ST7735_WIDTH 160
#define ST7735_HEIGHT 80
#define ST7735_ROTATION (ST7735_MADCTL_MY | ST7735_MADCTL_MV | ST7735_MADCTL_BGR)
*/
/****************************/
#define ST7735_NOP 0x00
#define ST7735_SWRESET 0x01
#define ST7735_RDDID 0x04
#define ST7735_RDDST 0x09
#define ST7735_SLPIN 0x10
#define ST7735_SLPOUT 0x11
#define ST7735_PTLON 0x12
#define ST7735_NORON 0x13
#define ST7735_INVOFF 0x20
#define ST7735_INVON 0x21
#define ST7735_GAMSET 0x26
#define ST7735_DISPOFF 0x28
#define ST7735_DISPON 0x29
#define ST7735_CASET 0x2A
#define ST7735_RASET 0x2B
#define ST7735_RAMWR 0x2C
#define ST7735_RAMRD 0x2E
#define ST7735_PTLAR 0x30
#define ST7735_COLMOD 0x3A
#define ST7735_MADCTL 0x36
#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_RDID1 0xDA
#define ST7735_RDID2 0xDB
#define ST7735_RDID3 0xDC
#define ST7735_RDID4 0xDD
#define ST7735_PWCTR6 0xFC
#define ST7735_GMCTRP1 0xE0
#define ST7735_GMCTRN1 0xE1
// Color definitions
#define ST7735_BLACK 0x0000
#define ST7735_BLUE 0x001F
#define ST7735_RED 0xF800
#define ST7735_GREEN 0x07E0
#define ST7735_CYAN 0x07FF
#define ST7735_MAGENTA 0xF81F
#define ST7735_YELLOW 0xFFE0
#define ST7735_WHITE 0xFFFF
#define ST7735_COLOR565(r, g, b) (((r & 0xF8) << 8) | ((g & 0xFC) << 3) | ((b & 0xF8) >> 3))
typedef enum {
GAMMA_10 = 0x01,
GAMMA_25 = 0x02,
GAMMA_22 = 0x04,
GAMMA_18 = 0x08
} GammaDef;
#ifdef __cplusplus
extern "C" {
#endif
// call before initializing any SPI devices
void ST7735_Unselect();
void ST7735_Init(void);
void ST7735_DrawPixel(uint16_t x, uint16_t y, uint16_t color);
void ST7735_WriteString(uint16_t x, uint16_t y, const char* str, FontDef font, uint16_t color, uint16_t bgcolor);
void ST7735_FillRectangle(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t color);
void ST7735_FillRectangleFast(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t color);
void ST7735_FillScreen(uint16_t color);
void ST7735_FillScreenFast(uint16_t color);
void ST7735_DrawImage(uint16_t x, uint16_t y, uint16_t w, uint16_t h, const uint16_t* data);
void ST7735_InvertColors(bool invert);
void ST7735_SetGamma(GammaDef gamma);
#ifdef __cplusplus
}
#endif
#endif // __ST7735_H__
And the source file st7735.c:
#include "stm32f1xx_hal.h"
#include "st7735.h"
//#include "malloc.h"
#include "string.h"
#define DELAY 0x80
// based on Adafruit ST7735 library for Arduino
static const uint8_t
init_cmds1[] = { // Init for 7735R, part 1 (red or green tab)
15, // 15 commands in list:
ST7735_SWRESET, DELAY, // 1: Software reset, 0 args, w/delay
150, // 150 ms delay
ST7735_SLPOUT , DELAY, // 2: Out of sleep mode, 0 args, w/delay
255, // 500 ms delay
ST7735_FRMCTR1, 3 , // 3: Frame rate ctrl - normal mode, 3 args:
0x01, 0x2C, 0x2D, // Rate = fosc/(1x2+40) * (LINE+2C+2D)
ST7735_FRMCTR2, 3 , // 4: Frame rate control - idle mode, 3 args:
0x01, 0x2C, 0x2D, // Rate = fosc/(1x2+40) * (LINE+2C+2D)
ST7735_FRMCTR3, 6 , // 5: Frame rate ctrl - 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, no delay:
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, Opamp current small & Medium low
0x2A,
ST7735_PWCTR5 , 2 , // 11: Power control, 2 args, no delay:
0x8A, 0xEE,
ST7735_VMCTR1 , 1 , // 12: Power control, 1 arg, no delay:
0x0E,
ST7735_INVOFF , 0 , // 13: Don't invert display, no args, no delay
ST7735_MADCTL , 1 , // 14: Memory access control (directions), 1 arg:
ST7735_ROTATION, // row addr/col addr, bottom to top refresh
ST7735_COLMOD , 1 , // 15: set color mode, 1 arg, no delay:
0x05 }, // 16-bit color
#if (defined(ST7735_IS_128X128) || defined(ST7735_IS_160X128))
init_cmds2[] = { // Init for 7735R, part 2 (1.44" display)
2, // 2 commands in list:
ST7735_CASET , 4 , // 1: Column addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x7F, // XEND = 127
ST7735_RASET , 4 , // 2: Row addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x7F }, // XEND = 127
#endif // ST7735_IS_128X128
#ifdef ST7735_IS_160X80
init_cmds2[] = { // Init for 7735S, part 2 (160x80 display)
3, // 3 commands in list:
ST7735_CASET , 4 , // 1: Column addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x4F, // XEND = 79
ST7735_RASET , 4 , // 2: Row addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x9F , // XEND = 159
ST7735_INVON, 0 }, // 3: Invert colors
#endif
init_cmds3[] = { // Init for 7735R, part 3 (red or green tab)
4, // 4 commands in list:
ST7735_GMCTRP1, 16 , // 1: Gamma Adjustments (pos. polarity), 16 args, no delay:
0x02, 0x1c, 0x07, 0x12,
0x37, 0x32, 0x29, 0x2d,
0x29, 0x25, 0x2B, 0x39,
0x00, 0x01, 0x03, 0x10,
ST7735_GMCTRN1, 16 , // 2: Gamma Adjustments (neg. polarity), 16 args, no delay:
0x03, 0x1d, 0x07, 0x06,
0x2E, 0x2C, 0x29, 0x2D,
0x2E, 0x2E, 0x37, 0x3F,
0x00, 0x00, 0x02, 0x10,
ST7735_NORON , DELAY, // 3: Normal display on, no args, w/delay
10, // 10 ms delay
ST7735_DISPON , DELAY, // 4: Main screen turn on, no args w/delay
100 }; // 100 ms delay
static void ST7735_Select() {
HAL_GPIO_WritePin(ST7735_CS_GPIO_Port, ST7735_CS_Pin, GPIO_PIN_RESET);
}
void ST7735_Unselect() {
HAL_GPIO_WritePin(ST7735_CS_GPIO_Port, ST7735_CS_Pin, GPIO_PIN_SET);
}
static void ST7735_Reset() {
HAL_GPIO_WritePin(ST7735_RES_GPIO_Port, ST7735_RES_Pin, GPIO_PIN_RESET);
HAL_Delay(5);
HAL_GPIO_WritePin(ST7735_RES_GPIO_Port, ST7735_RES_Pin, GPIO_PIN_SET);
}
static void ST7735_WriteCommand(uint8_t cmd) {
HAL_GPIO_WritePin(ST7735_DC_GPIO_Port, ST7735_DC_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&ST7735_SPI_PORT, &cmd, sizeof(cmd), HAL_MAX_DELAY);
}
static void ST7735_WriteData(uint8_t* buff, size_t buff_size) {
HAL_GPIO_WritePin(ST7735_DC_GPIO_Port, ST7735_DC_Pin, GPIO_PIN_SET);
HAL_SPI_Transmit(&ST7735_SPI_PORT, buff, buff_size, HAL_MAX_DELAY);
}
static void ST7735_ExecuteCommandList(const uint8_t *addr) {
uint8_t numCommands, numArgs;
uint16_t ms;
numCommands = *addr++;
while(numCommands--) {
uint8_t cmd = *addr++;
ST7735_WriteCommand(cmd);
numArgs = *addr++;
// If high bit set, delay follows args
ms = numArgs & DELAY;
numArgs &= ~DELAY;
if(numArgs) {
ST7735_WriteData((uint8_t*)addr, numArgs);
addr += numArgs;
}
if(ms) {
ms = *addr++;
if(ms == 255) ms = 500;
HAL_Delay(ms);
}
}
}
static void ST7735_SetAddressWindow(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1) {
// column address set
ST7735_WriteCommand(ST7735_CASET);
uint8_t data[] = { 0x00, x0 + ST7735_XSTART, 0x00, x1 + ST7735_XSTART };
ST7735_WriteData(data, sizeof(data));
// row address set
ST7735_WriteCommand(ST7735_RASET);
data[1] = y0 + ST7735_YSTART;
data[3] = y1 + ST7735_YSTART;
ST7735_WriteData(data, sizeof(data));
// write to RAM
ST7735_WriteCommand(ST7735_RAMWR);
}
void ST7735_Init() {
ST7735_Select();
HAL_Delay(100);
ST7735_Reset();
HAL_Delay(100);
ST7735_ExecuteCommandList(init_cmds1);
HAL_Delay(100);
ST7735_ExecuteCommandList(init_cmds2);
HAL_Delay(100);
ST7735_ExecuteCommandList(init_cmds3);
HAL_Delay(100);
ST7735_Unselect();
}
void ST7735_DrawPixel(uint16_t x, uint16_t y, uint16_t color) {
if((x >= ST7735_WIDTH) || (y >= ST7735_HEIGHT))
return;
ST7735_Select();
ST7735_SetAddressWindow(x, y, x+1, y+1);
uint8_t data[] = { color >> 8, color & 0xFF };
ST7735_WriteData(data, sizeof(data));
ST7735_Unselect();
}
static void ST7735_WriteChar(uint16_t x, uint16_t y, char ch, FontDef font, uint16_t color, uint16_t bgcolor) {
uint32_t i, b, j;
ST7735_SetAddressWindow(x, y, x+font.width-1, y+font.height-1);
for(i = 0; i < font.height; i++) {
b = font.data[(ch - 32) * font.height + i];
for(j = 0; j < font.width; j++) {
if((b << j) & 0x8000) {
uint8_t data[] = { color >> 8, color & 0xFF };
ST7735_WriteData(data, sizeof(data));
} else {
uint8_t data[] = { bgcolor >> 8, bgcolor & 0xFF };
ST7735_WriteData(data, sizeof(data));
}
}
}
}
/*
Simpler (and probably slower) implementation:
static void ST7735_WriteChar(uint16_t x, uint16_t y, char ch, FontDef font, uint16_t color) {
uint32_t i, b, j;
for(i = 0; i < font.height; i++) {
b = font.data[(ch - 32) * font.height + i];
for(j = 0; j < font.width; j++) {
if((b << j) & 0x8000) {
ST7735_DrawPixel(x + j, y + i, color);
}
}
}
}
*/
void ST7735_WriteString(uint16_t x, uint16_t y, const char* str, FontDef font, uint16_t color, uint16_t bgcolor) {
ST7735_Select();
while(*str) {
if(x + font.width >= ST7735_WIDTH) {
x = 0;
y += font.height;
if(y + font.height >= ST7735_HEIGHT) {
break;
}
if(*str == ' ') {
// skip spaces in the beginning of the new line
str++;
continue;
}
}
ST7735_WriteChar(x, y, *str, font, color, bgcolor);
x += font.width;
str++;
}
ST7735_Unselect();
}
void ST7735_FillRectangle(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t color) {
// clipping
if((x >= ST7735_WIDTH) || (y >= ST7735_HEIGHT)) return;
if((x + w - 1) >= ST7735_WIDTH) w = ST7735_WIDTH - x;
if((y + h - 1) >= ST7735_HEIGHT) h = ST7735_HEIGHT - y;
ST7735_Select();
ST7735_SetAddressWindow(x, y, x+w-1, y+h-1);
uint8_t data[] = { color >> 8, color & 0xFF };
HAL_GPIO_WritePin(ST7735_DC_GPIO_Port, ST7735_DC_Pin, GPIO_PIN_SET);
for(y = h; y > 0; y--) {
for(x = w; x > 0; x--) {
HAL_SPI_Transmit(&ST7735_SPI_PORT, data, sizeof(data), HAL_MAX_DELAY);
}
}
ST7735_Unselect();
}
//void ST7735_FillRectangleFast(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t color) {
// // clipping
// if((x >= ST7735_WIDTH) || (y >= ST7735_HEIGHT)) return;
// if((x + w - 1) >= ST7735_WIDTH) w = ST7735_WIDTH - x;
// if((y + h - 1) >= ST7735_HEIGHT) h = ST7735_HEIGHT - y;
// ST7735_Select();
// ST7735_SetAddressWindow(x, y, x+w-1, y+h-1);
// // Prepare whole line in a single buffer
// uint8_t pixel[] = { color >> 8, color & 0xFF };
// uint8_t *line = malloc(w * sizeof(pixel));
// for(x = 0; x < w; ++x)
// memcpy(line + x * sizeof(pixel), pixel, sizeof(pixel));
// HAL_GPIO_WritePin(ST7735_DC_GPIO_Port, ST7735_DC_Pin, GPIO_PIN_SET);
// for(y = h; y > 0; y--)
// HAL_SPI_Transmit(&ST7735_SPI_PORT, line, w * sizeof(pixel), HAL_MAX_DELAY);
// free(line);
// ST7735_Unselect();
//}
void ST7735_FillScreen(uint16_t color) {
ST7735_FillRectangle(0, 0, ST7735_WIDTH, ST7735_HEIGHT, color);
}
//void ST7735_FillScreenFast(uint16_t color) {
// ST7735_FillRectangleFast(0, 0, ST7735_WIDTH, ST7735_HEIGHT, color);
//}
void ST7735_DrawImage(uint16_t x, uint16_t y, uint16_t w, uint16_t h, const uint16_t* data) {
if((x >= ST7735_WIDTH) || (y >= ST7735_HEIGHT)) return;
if((x + w - 1) >= ST7735_WIDTH) return;
if((y + h - 1) >= ST7735_HEIGHT) return;
ST7735_Select();
ST7735_SetAddressWindow(x, y, x+w-1, y+h-1);
ST7735_WriteData((uint8_t*)data, sizeof(uint16_t)*w*h);
ST7735_Unselect();
}
void ST7735_InvertColors(bool invert) {
ST7735_Select();
ST7735_WriteCommand(invert ? ST7735_INVON : ST7735_INVOFF);
ST7735_Unselect();
}
//void ST7735_SetGamma(uint8_t gamma)
//{
// ST7735_Select();
// ST7735_WriteCommand(ST7735_GAMSET);
// ST7735_WriteData(&gamma, sizeof(gamma));
// ST7735_Unselect();
//}
MX_SPI2_InitandMX_GPIO_Initfunctions \$\endgroup\$