Stm32103c8与lcd1602的程序代码

以下是一个基于STM32F103C8和LCD1602的程序代码示例：

#include "stm32f10x.h"
#include "delay.h"

// 定义LCD控制引脚
#define LCD_RS PBout(12)
#define LCD_RW PBout(11)
#define LCD_EN PBout(10)
#define LCD_D4 PBout(5)
#define LCD_D5 PBout(4)
#define LCD_D6 PBout(3)
#define LCD_D7 PBout(2)

// 初始化LCD
void LCD_Init(void)
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);  // 使能GPIOB时钟

    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    LCD_EN = 0;
    LCD_RS = 0;
    LCD_RW = 0;

    delay_ms(15);
    LCD_WriteCommand(0x30);
    delay_ms(5);
    LCD_WriteCommand(0x30);
    delay_ms(1);
    LCD_WriteCommand(0x30);
    delay_ms(1);
    LCD_WriteCommand(0x20);
    delay_ms(1);
    LCD_WriteCommand(0x28);
    delay_ms(1);
    LCD_WriteCommand(0x08);
    delay_ms(1);
    LCD_WriteCommand(0x01);
    delay_ms(1);
    LCD_WriteCommand(0x06);
    delay_ms(1);
    LCD_WriteCommand(0x0C);
}

// 写命令
void LCD_WriteCommand(uint8_t command)
{
    LCD_RS = 0;
    LCD_RW = 0;
    LCD_EN = 1;
    LCD_D7 = command & 0x80;
    LCD_D6 = command & 0x40;
    LCD_D5 = command & 0x20;
    LCD_D4 = command & 0x10;
    LCD_EN = 0;
    delay_us(1);
    LCD_EN = 1;
    LCD_D7 = command & 0x08;
    LCD_D6 = command & 0x04;
    LCD_D5 = command & 0x02;
    LCD_D4 = command & 0x01;
    LCD_EN = 0;
    delay_us(1);
}

// 写数据
void LCD_WriteData(uint8_t data)
{
    LCD_RS = 1;
    LCD_RW = 0;
    LCD_EN = 1;
    LCD_D7 = data & 0x80;
    LCD_D6 = data & 0x40;
    LCD_D5 = data & 0x20;
    LCD_D4 = data & 0x10;
    LCD_EN = 0;
    delay_us(1);
    LCD_EN = 1;
    LCD_D7 = data & 0x08;
    LCD_D6 = data & 0x04;
    LCD_D5 = data & 0x02;
    LCD_D4 = data & 0x01;
    LCD_EN = 0;
    delay_us(1);
}

// 显示字符串
void LCD_ShowString(uint8_t x, uint8_t y, uint8_t *str)
{
    uint8_t i = 0;
    if (y == 0) {
        LCD_WriteCommand(0x80 + x);
    } else {
        LCD_WriteCommand(0xC0 + x);
    }
    while (str[i] != '\0') {
        LCD_WriteData(str[i]);
        i++;
    }
}

int main(void)
{
    LCD_Init();
    while (1) {
        LCD_ShowString(0, 0, "Hello, World!");
        delay_ms(1000);
        LCD_WriteCommand(0x01);
        delay_ms(500);
    }
}

这是一个简单的LCD驱动程序，使用了STM32F103C8芯片，GPIOB口控制LCD1602。程序中定义了一些宏来控制LCD的各个引脚，包括RS、RW、EN、D4、D5、D6、D7。在初始化LCD时，先将控制引脚设为输出模式，并执行一些初始化命令来设置LCD的工作模式。然后可以调用`LCD_WriteCommand`和`LCD_WriteData`函数来写入命令和数据。最后，可以使用`LCD_ShowString`函数来显示字符串。程序中还包括了一些延时函数，保证信号稳定。