用HAL库写一个驱动1.8寸TFT屏幕的代码
时间: 2023-03-26 12:01:59 浏览: 94
你好,我可以回答这个问题。以下是使用HAL库编写1.8寸TFT屏幕驱动的代码示例:
#include "stm32f4xx_hal.h"
#include "stm32f4xx_hal_gpio.h"
#include "stm32f4xx_hal_spi.h"
#define TFT_DC_Pin GPIO_PIN_12
#define TFT_DC_GPIO_Port GPIOB
#define TFT_CS_Pin GPIO_PIN_13
#define TFT_CS_GPIO_Port GPIOB
#define TFT_RST_Pin GPIO_PIN_14
#define TFT_RST_GPIO_Port GPIOB
SPI_HandleTypeDef hspi1;
void MX_SPI1_Init(void)
{
hspi1.Instance = SPI1;
hspi1.Init.Mode = SPI_MODE_MASTER;
hspi1.Init.Direction = SPI_DIRECTION_2LINES;
hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi1.Init.NSS = SPI_NSS_SOFT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 10;
if (HAL_SPI_Init(&hspi1) != HAL_OK)
{
Error_Handler();
}
}
void TFT_Write_Command(uint8_t cmd)
{
HAL_GPIO_WritePin(TFT_DC_GPIO_Port, TFT_DC_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, 100);
}
void TFT_Write_Data(uint8_t data)
{
HAL_GPIO_WritePin(TFT_DC_GPIO_Port, TFT_DC_Pin, GPIO_PIN_SET);
HAL_SPI_Transmit(&hspi1, &data, 1, 100);
}
void TFT_Reset()
{
HAL_GPIO_WritePin(TFT_RST_GPIO_Port, TFT_RST_Pin, GPIO_PIN_RESET);
HAL_Delay(10);
HAL_GPIO_WritePin(TFT_RST_GPIO_Port, TFT_RST_Pin, GPIO_PIN_SET);
HAL_Delay(10);
}
void TFT_Init()
{
TFT_Reset();
TFT_Write_Command(x01); //Software reset
HAL_Delay(100);
TFT_Write_Command(x11); //Sleep out
HAL_Delay(100);
TFT_Write_Command(x3A); //Interface pixel format
TFT_Write_Data(x05); //16 bits per pixel
TFT_Write_Command(x36); //Memory data access control
TFT_Write_Data(x08); //BGR order
TFT_Write_Command(x29); //Display on
}
void TFT_Set_Address_Window(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2)
{
TFT_Write_Command(x2A); //Column address set
TFT_Write_Data(x1 >> 8);
TFT_Write_Data(x1 & xFF);
TFT_Write_Data(x2 >> 8);
TFT_Write_Data(x2 & xFF);
TFT_Write_Command(x2B); //Row address set
TFT_Write_Data(y1 >> 8);
TFT_Write_Data(y1 & xFF);
TFT_Write_Data(y2 >> 8);
TFT_Write_Data(y2 & xFF);
TFT_Write_Command(x2C); //Memory write
}
void TFT_Fill_Color(uint16_t color)
{
uint32_t i;
TFT_Set_Address_Window(, , 127, 159);
for (i = ; i < 20480; i++)
{
TFT_Write_Data(color >> 8);
TFT_Write_Data(color & xFF);
}
}
int main(void)
{
HAL_Init();
MX_SPI1_Init();
TFT_Init();
TFT_Fill_Color(xF800); //Fill screen with red color
while (1)
{
}
}
希望这个代码示例对你有所帮助。