stm32驱动1.44tftlcd显示屏代码如何编写
时间: 2024-06-09 22:11:13 浏览: 177
stm32TFT屏幕驱动代码
编写STM32驱动1.44TFTLCD显示屏代码需要遵循以下步骤:
1. 确定使用的接口类型,比如SPI接口或者8位并行接口。
2. 配置STM32的GPIO口作为引脚控制信号输出,比如RS、WR、CS等控制引脚。
3. 配置SPI或者8位并行总线的时序,确定时钟频率、数据传输格式等参数。
4. 编写驱动程序,包括初始化函数、写命令函数、写数据函数等。
5. 在主程序中调用驱动程序,通过写命令函数和写数据函数来控制LCD屏幕的显示内容。
以下是一个SPI接口的1.44TFTLCD显示屏的驱动代码示例,仅供参考:
```c
#include "stm32f4xx_hal.h"
#define LCD_CS_PIN GPIO_PIN_4
#define LCD_CS_PORT GPIOA
#define LCD_RS_PIN GPIO_PIN_5
#define LCD_RS_PORT GPIOA
#define LCD_RESET_PIN GPIO_PIN_6
#define LCD_RESET_PORT GPIOA
SPI_HandleTypeDef hspi1;
void LCD_WriteCmd(uint8_t cmd){
HAL_GPIO_WritePin(LCD_RS_PORT, LCD_RS_PIN, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, &cmd, 1, 100);
HAL_GPIO_WritePin(LCD_RS_PORT, LCD_RS_PIN, GPIO_PIN_SET);
}
void LCD_WriteData(uint8_t data){
HAL_GPIO_WritePin(LCD_RS_PORT, LCD_RS_PIN, GPIO_PIN_SET);
HAL_SPI_Transmit(&hspi1, &data, 1, 100);
}
void LCD_Init(void){
HAL_GPIO_WritePin(LCD_RESET_PORT, LCD_RESET_PIN, GPIO_PIN_RESET);
HAL_Delay(100);
HAL_GPIO_WritePin(LCD_RESET_PORT, LCD_RESET_PIN, GPIO_PIN_SET);
HAL_Delay(100);
LCD_WriteCmd(0x01);
LCD_WriteCmd(0x11);
LCD_WriteCmd(0x3A);
LCD_WriteData(0x55);
LCD_WriteCmd(0x36);
LCD_WriteData(0x08);
LCD_WriteCmd(0x29);
}
int main(void){
HAL_Init();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_SPI1_CLK_ENABLE();
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.Pin = LCD_CS_PIN | LCD_RS_PIN | LCD_RESET_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(LCD_CS_PORT, &GPIO_InitStruct);
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_16;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 7;
HAL_SPI_Init(&hspi1);
LCD_Init();
while(1){
//LCD屏幕显示内容的更新操作
}
}
```
需要注意的是,具体的时序、命令、数据格式等参数需要参考LCD屏幕的数据手册。
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