基于stm32f103c8t6控制lcd12864的程序

以下是基于STM32F103C8T6控制LCD12864的程序：

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

#define RS GPIO_Pin_0
#define RW GPIO_Pin_1
#define EN GPIO_Pin_2

#define DB0 GPIO_Pin_8
#define DB1 GPIO_Pin_9
#define DB2 GPIO_Pin_10
#define DB3 GPIO_Pin_11
#define DB4 GPIO_Pin_12
#define DB5 GPIO_Pin_13
#define DB6 GPIO_Pin_14
#define DB7 GPIO_Pin_15

#define DATA_PORT GPIOE
#define CMD_PORT GPIOB

void LCD_Init(void);
void LCD_Write_Cmd(uint8_t cmd);
void LCD_Write_Data(uint8_t data);
void LCD_Clear(void);
void LCD_Set_Cursor(uint8_t row, uint8_t col);
void LCD_Write_Char(uint8_t row, uint8_t col, uint8_t data);
void LCD_Write_String(uint8_t row, uint8_t col, char *str);

int main(void)
{
    SystemInit();
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOE, ENABLE);

    LCD_Init();
    LCD_Write_String(0, 0, "Hello World!");

    while (1)
    {
        // Do something
    }
}

void LCD_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStruct;

    // Enable GPIOB and GPIOE clocks
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOE, ENABLE);

    // Configure control pins as output push-pull
    GPIO_InitStruct.GPIO_Pin = RS | RW | EN;
    GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(CMD_PORT, &GPIO_InitStruct);

    // Configure data pins as output push-pull
    GPIO_InitStruct.GPIO_Pin = DB0 | DB1 | DB2 | DB3 | DB4 | DB5 | DB6 | DB7;
    GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(DATA_PORT, &GPIO_InitStruct);

    // Wait for LCD to power up
    Delay_ms(100);

    // Function Set
    LCD_Write_Cmd(0x38);
    Delay_ms(5);

    // Display On/Off Control
    LCD_Write_Cmd(0x0C);
    Delay_ms(5);

    // Clear Display
    LCD_Clear();
    Delay_ms(5);

    // Entry Mode Set
    LCD_Write_Cmd(0x06);
    Delay_ms(5);
}

void LCD_Write_Cmd(uint8_t cmd)
{
    GPIO_ResetBits(CMD_PORT, RS);
    GPIO_ResetBits(CMD_PORT, RW);
    Delay_us(1);
    GPIO_SetBits(CMD_PORT, EN);
    Delay_us(1);
    GPIO_Write(DATA_PORT, cmd);
    Delay_us(1);
    GPIO_ResetBits(CMD_PORT, EN);
    Delay_us(50);
}

void LCD_Write_Data(uint8_t data)
{
    GPIO_SetBits(CMD_PORT, RS);
    GPIO_ResetBits(CMD_PORT, RW);
    Delay_us(1);
    GPIO_SetBits(CMD_PORT, EN);
    Delay_us(1);
    GPIO_Write(DATA_PORT, data);
    Delay_us(1);
    GPIO_ResetBits(CMD_PORT, EN);
    Delay_us(50);
}

void LCD_Clear(void)
{
    LCD_Write_Cmd(0x01);
    Delay_ms(2);
}

void LCD_Set_Cursor(uint8_t row, uint8_t col)
{
    uint8_t address;

    switch (row)
    {
    case 0:
        address = col;
        break;
    case 1:
        address = col + 0x40;
        break;
    case 2:
        address = col + 0x10;
        break;
    case 3:
        address = col + 0x50;
        break;
    }

    LCD_Write_Cmd(0x80 | address);
    Delay_us(50);
}

void LCD_Write_Char(uint8_t row, uint8_t col, uint8_t data)
{
    LCD_Set_Cursor(row, col);
    LCD_Write_Data(data);
    Delay_us(50);
}

void LCD_Write_String(uint8_t row, uint8_t col, char *str)
{
    LCD_Set_Cursor(row, col);

    while (*str)
    {
        LCD_Write_Data(*str++);
    }
}

这个程序中，我们定义了与LCD相关的引脚，以及一些函数，例如LCD初始化、写命令、写数据、清屏、设置光标、写字符和写字符串。在主函数中，我们初始化LCD并写入“Hello World!”。在while循环中，你可以添加你自己的代码。