写一个st7789初始化程序
时间: 2024-10-13 12:08:49 浏览: 72
ST7789是一种常用的TFT液晶屏控制器,它通常用于基于微控制器如STM32的嵌入式系统。以下是使用C语言为STM32平台编写一个基本的ST7789 LCD初始化程序的示例。请注意,这只是一个基础框架,并未包含全部细节,实际项目中还需要连接正确的硬件、配置中断和颜色模式等。
```c
#include "stm32f4xx_hal.h"
#include "st7789.h" // ST7789库文件
// 初始化函数
void st7789_init(void) {
GPIO_InitTypeDef GPIO_InitStruct;
TIM_HandleTypeDef htim;
// LCD初始化配置
LCD_Init(); // 调用ST7789驱动的初始化函数
// LCD寄存器地址设置
LCD_SetReg(0x01, 0x36); // 设置显示模式
LCD_SetReg(0x01, 0x3A); // 设置数据线方向
LCD_SetReg(0x01, 0x3C); // 设置复位信号
LCD_SetReg(0x20, 0x08); // 设置电压控制
// GPIO配置
GPIO_InitStruct.Pin = GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_9 | GPIO_PIN_10; // 数据线
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_LCD;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
// 宽度定时器配置
htim.Instance = STM32_TIM1;
htim.Init.Prescaler = 83 - 1; // 根据实际时钟频率调整预分频值
htim.Init.CounterMode = TIM_COUNTERMODE_UP;
htim.Init.Period = 262 - 1; // 时钟周期数
HAL_TIM_Base_Init(&htim);
HAL_TIM_Base_Start(&htim);
// LCD开屏
LCD_Cmd(LCD_ON); // 开启LCD
}
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