基于stm32的lcd12864代码

以下是基于STM32的LCD12864的代码，使用的是4位并行通信方式：

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

#define LCD_RS GPIO_Pin_0
#define LCD_RW GPIO_Pin_1
#define LCD_EN GPIO_Pin_2
#define LCD_DATA GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6

void LCD_WriteCmd(uint8_t cmd);
void LCD_WriteData(uint8_t dat);
void LCD_Init(void);
void LCD_GotoXY(uint8_t x, uint8_t y);
void LCD_Clear(void);

int main(void)
{
    LCD_Init();
    LCD_WriteCmd(0x01); //清屏
    LCD_GotoXY(0,0);
    LCD_WriteData('S');
    LCD_WriteData('T');
    LCD_WriteData('M');
    LCD_WriteData('3');
    LCD_WriteData('2');
    LCD_WriteData('F');
    LCD_WriteData('1');
    LCD_WriteData('0');
    LCD_WriteData('x');
    LCD_WriteData('x');
    LCD_GotoXY(0,1);
    LCD_WriteData('L');
    LCD_WriteData('C');
    LCD_WriteData('D');
    LCD_WriteData('1');
    LCD_WriteData('2');
    LCD_WriteData('8');
    LCD_WriteData('6');
    LCD_WriteData('4');
    while(1)
    {
    }
}

void LCD_WriteCmd(uint8_t cmd)
{
    GPIO_ResetBits(GPIOB,LCD_RS);
    GPIO_ResetBits(GPIOB,LCD_RW);
    GPIO_SetBits(GPIOB,LCD_EN);
    GPIO_Write(GPIOB,cmd<<3);
    delay_us(1);
    GPIO_ResetBits(GPIOB,LCD_EN);
    delay_us(50);
}

void LCD_WriteData(uint8_t dat)
{
    GPIO_SetBits(GPIOB,LCD_RS);
    GPIO_ResetBits(GPIOB,LCD_RW);
    GPIO_SetBits(GPIOB,LCD_EN);
    GPIO_Write(GPIOB,dat<<3);
    delay_us(1);
    GPIO_ResetBits(GPIOB,LCD_EN);
    delay_us(50);
}

void LCD_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
    GPIO_InitStructure.GPIO_Pin = LCD_RS|LCD_RW|LCD_EN|LCD_DATA;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
    delay_ms(50);
    LCD_WriteCmd(0x30);
    delay_ms(5);
    LCD_WriteCmd(0x30);
    delay_ms(1);
    LCD_WriteCmd(0x30);
    delay_ms(1);
    LCD_WriteCmd(0x38);
    LCD_WriteCmd(0x08);
    LCD_WriteCmd(0x01);
    LCD_WriteCmd(0x06);
    LCD_WriteCmd(0x0C);
}

void LCD_GotoXY(uint8_t x, uint8_t y)
{
    uint8_t addr;
    if(y == 0)
    {
        addr = 0x80 + x;
    }
    else
    {
        addr = 0x80 + 0x40 + x;
    }
    LCD_WriteCmd(addr);
}

void LCD_Clear(void)
{
    LCD_WriteCmd(0x01);
}

注意：以上代码仅供参考，具体实现需要根据实际情况进行修改。