【GD32F427开发板试用】07-硬件SPI驱动0.96LCD

本篇文章来自极术社区与兆易创新组织的GD32F427开发板评测活动，更多开发板试用活动请关注极术社区网站。作者：Stark_GS

SPI 简介及特点

具有全双工、半双工和单工模式的主从操作。
16位宽度，独立的发送和接收缓冲区。
8位或16位数据帧格式。
低位在前或高位在前的数据位顺序。
软件和硬件NSS管理。
硬件CRC计算、发送和校验。
发送和接收支持DMA模式。
支持SPI TI模式。
支持SPI四线功能的主机模式（只有SPI5）。

SPI模块可以通过SPI协议与外部设备进行通信。
串行外设接口（Serial Peripheral Interface，缩写为SPI）提供了基于SPI协议的数据发送和接
收功能，可以工作于主机或从机模式。 SPI接口支持具有硬件CRC计算和校验的全双工和单工
模式。 SPI5还支持SPI四线主机模式。

开发环境&参考文档

Keil-MDK 5.27.1.0
Windows11
固件库-GD32F4xx\_Firmware\_Library\_V3.0.2
GD32F427xx\_Datasheet\_Rev1.2
GD32F4xx\_User\_Manual\_Rev2.7\_CN
GD32F4xx 固件库使用指南\_V1.0

代码部分

SPI 初始化配置

spi.h 文件

#ifndef _SPI_H_
#define _SPI_H_

#include "gd32f4xx.h"

void SPI_Init(void);

#endif

spi.c 文件

#include "spi.h"



void SPI_Init(void)
{
    spi_parameter_struct spi_init_struct;
    rcu_periph_clock_enable(RCU_GPIOB);
    rcu_periph_clock_enable(RCU_GPIOD);
    rcu_periph_clock_enable(RCU_SPI0);

    /* GPIOC config, PC10(LCD_SPI_CLK), PC11(SPI0_MISO), PC12(LCD_SPI_MOSI) */
    gpio_af_set(GPIOB, GPIO_AF_5,GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5);
    gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5);
    gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5);

    /* GPIOC config */
    gpio_mode_set(GPIOD, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3);
    gpio_output_options_set(GPIOD, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3);
    gpio_bit_reset(GPIOD,GPIO_PIN_1);
    gpio_bit_set(GPIOD,GPIO_PIN_3);
    
    gpio_mode_set(GPIOD, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_0);
    gpio_output_options_set(GPIOD, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_0);
    gpio_bit_set(GPIOD,GPIO_PIN_0);
    /* SPI0 parameter config */
    spi_init_struct.trans_mode           = SPI_TRANSMODE_FULLDUPLEX;
    spi_init_struct.device_mode          = SPI_MASTER;
    spi_init_struct.frame_size           = SPI_FRAMESIZE_8BIT;
    spi_init_struct.clock_polarity_phase = SPI_CK_PL_LOW_PH_1EDGE;
    spi_init_struct.nss                  = SPI_NSS_SOFT;
    spi_init_struct.prescale             = SPI_PSC_2;
    spi_init_struct.endian               = SPI_ENDIAN_MSB;
    spi_init(SPI0, &spi_init_struct);

    /* set crc polynomial */
    spi_crc_polynomial_set(SPI0, 7);
    spi_enable(SPI0);
}

LCD 初始化函数

lcd.h 文件

#ifndef __LCD_H
#define __LCD_H        

#include "stdint.h"      

#define USE_HORIZONTAL 2  //设置横屏或者竖屏显示 0或1为竖屏 2或3为横屏

//画笔颜色
#define WHITE            0xFFFF
#define BLACK            0x0000      
#define BLUE            0x001F  
#define BRED            0XF81F
#define GRED            0XFFE0
#define GBLUE            0X07FF
#define RED                0xF800
#define MAGENTA            0xF81F
#define GREEN            0x07E0
#define CYAN            0x7FFF
#define YELLOW            0xFFE0
#define BROWN            0XBC40 //棕色
#define BRRED            0XFC07 //棕红色
#define GRAY            0X8430 //灰色
//GUI颜色
#define DARKBLUE        0X01CF    //深蓝色
#define LIGHTBLUE        0X7D7C    //浅蓝色  
#define GRAYBLUE        0X5458 //灰蓝色
//以上三色为PANEL的颜色 
 
#define LIGHTGREEN        0X841F //浅绿色
#define LGRAY            0XC618 //浅灰色(PANNEL),窗体背景色

#define LGRAYBLUE        0XA651 //浅灰蓝色(中间层颜色)
#define LBBLUE            0X2B12 //浅棕蓝色(选择条目的反色)

#if USE_HORIZONTAL==0||USE_HORIZONTAL==1
#define LCD_W 80
#define LCD_H 160

#else
#define LCD_W 160
#define LCD_H 80
#endif

#define OLED_CMD  0    //写命令
#define OLED_DATA 1    //写数据

extern  uint16_t BACK_COLOR;   //背景色

/* tft cs */
#define LCD_CS_SET      ((uint32_t)(GPIO_BOP(GPIOD)    = GPIO_PIN_1))
#define LCD_CS_CLR      ((uint32_t)(GPIO_BC(GPIOD)    = GPIO_PIN_1))

/*tft rs/dc */
#define LCD_RS_SET      ((uint32_t)(GPIO_BOP(GPIOD)    = GPIO_PIN_2))
#define LCD_RS_CLR      ((uint32_t)(GPIO_BC(GPIOD)    = GPIO_PIN_2))

/*tft rst */
#define LCD_RST_SET     ((uint32_t)(GPIO_BOP(GPIOD)    = GPIO_PIN_3))
#define LCD_RST_CLR     ((uint32_t)(GPIO_BC(GPIOD)    = GPIO_PIN_3))

void LCD_WR_DATA8(uint8_t data);
void LCD_WR_DATA(uint16_t data);
void LCD_WR_REG(uint8_t data);
void LCD_Address_Set(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2);
void LCD_Init(void);
void LCD_Clear(uint16_t Color);
void LCD_ShowChinese(uint16_t x,uint16_t y,uint8_t index,uint8_t size,uint16_t color);
void LCD_DrawPoint(uint16_t x,uint16_t y,uint16_t color);
void LCD_DrawPoint_big(uint16_t x,uint16_t y,uint16_t color);
void LCD_Fill(uint16_t xsta,uint16_t ysta,uint16_t xend,uint16_t yend,uint16_t color);
void LCD_DrawLine(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2,uint16_t color);
void LCD_DrawRectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2,uint16_t color);
void Draw_Circle(uint16_t x0,uint16_t y0,uint8_t r,uint16_t color);
void LCD_ShowChar(uint16_t x,uint16_t y,uint8_t num,uint8_t mode,uint16_t color);
void LCD_ShowString(uint16_t x,uint16_t y,const uint8_t *p,uint16_t color);
uint32_t mypow(uint8_t m,uint8_t n);
void LCD_ShowNum(uint16_t x,uint16_t y,uint16_t num,uint8_t len,uint16_t color);
void LCD_ShowNum1(uint16_t x,uint16_t y,float num,uint8_t len,uint16_t color);
void LCD_ShowPicture(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2);





                               
#endif

lcd.c 文件

#include "lcd.h"
#include "oledfont.h"
#include "bmp.h"

#include "spi.h"
#include "systick.h"
uint16_t BACK_COLOR=LGRAY;   //背景色

#define OLED_Dly    5

void OLED_Delay(uint32_t Num)
{
    while(Num)
    {
        Num--;
    }
}
/******************************************************************************
      函数说明：LCD串行数据写入函数
      入口数据：dat  要写入的串行数据
      返回值：  无
******************************************************************************/
static uint8_t spi_write_byte(uint32_t spi_periph,uint8_t byte)
{
    while(RESET == (SPI_STAT(spi_periph)&SPI_FLAG_TBE));
    SPI_DATA(spi_periph) = byte;

    while(RESET == (SPI_STAT(spi_periph)&SPI_FLAG_RBNE));
    return(SPI_DATA(spi_periph));
} 

/******************************************************************************
      函数说明：LCD写入数据
      入口数据：dat 写入的数据
      返回值：  无
******************************************************************************/
void LCD_WR_DATA8(uint8_t data)
{
    LCD_RS_SET;
    spi_write_byte(SPI0,data);
}


/******************************************************************************
      函数说明：LCD写入数据
      入口数据：dat 写入的数据
      返回值：  无
******************************************************************************/
void LCD_WR_DATA(uint16_t data)
{
    LCD_WR_DATA8(data>>8);
    LCD_WR_DATA8(data);
}


/******************************************************************************
      函数说明：LCD写入命令
      入口数据：dat 写入的命令
      返回值：  无
******************************************************************************/
void LCD_WR_REG(uint8_t data)
{
    LCD_RS_CLR;
    spi_write_byte(SPI0,data);
}


/******************************************************************************
      函数说明：设置起始和结束地址
      入口数据：x1,x2 设置列的起始和结束地址
                y1,y2 设置行的起始和结束地址
      返回值：  无
******************************************************************************/
void LCD_Address_Set(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2)
{
    if(USE_HORIZONTAL==0)
    {
        LCD_WR_REG(0x2a);//列地址设置
        LCD_WR_DATA(x1+26);
        LCD_WR_DATA(x2+26);
        LCD_WR_REG(0x2b);//行地址设置
        LCD_WR_DATA(y1+1);
        LCD_WR_DATA(y2+1);
        LCD_WR_REG(0x2c);//储存器写
    }
    else if(USE_HORIZONTAL==1)
    {
        LCD_WR_REG(0x2a);//列地址设置
        LCD_WR_DATA(x1+26);
        LCD_WR_DATA(x2+26);
        LCD_WR_REG(0x2b);//行地址设置
        LCD_WR_DATA(y1+1);
        LCD_WR_DATA(y2+1);
        LCD_WR_REG(0x2c);//储存器写
    }
    else if(USE_HORIZONTAL==2)
    {
        LCD_WR_REG(0x2a);//列地址设置
        LCD_WR_DATA(x1+1);
        LCD_WR_DATA(x2+1);
        LCD_WR_REG(0x2b);//行地址设置
        LCD_WR_DATA(y1+26);
        LCD_WR_DATA(y2+26);
        LCD_WR_REG(0x2c);//储存器写
    }
    else
    {
        LCD_WR_REG(0x2a);//列地址设置
        LCD_WR_DATA(x1+1);
        LCD_WR_DATA(x2+1);
        LCD_WR_REG(0x2b);//行地址设置
        LCD_WR_DATA(y1+26);
        LCD_WR_DATA(y2+26);
        LCD_WR_REG(0x2c);//储存器写
    }
}


/******************************************************************************
      函数说明：LCD初始化函数
      入口数据：无
      返回值：  无
******************************************************************************/
void LCD_Init(void)
{
//    HAL_GPIO_WritePin(GPIOA,GPIO_PIN_8,GPIO_PIN_RESET);
//    HAL_Delay(200);
//    HAL_GPIO_WritePin(GPIOA,GPIO_PIN_8,GPIO_PIN_SET);
//    HAL_Delay(200);

    LCD_WR_REG(0x11); 
    delay_1ms(100);

    LCD_WR_REG(0x21); 

    LCD_WR_REG(0xB1); 
    LCD_WR_DATA8(0x05);
    LCD_WR_DATA8(0x3A);
    LCD_WR_DATA8(0x3A);

    LCD_WR_REG(0xB2);
    LCD_WR_DATA8(0x05);
    LCD_WR_DATA8(0x3A);
    LCD_WR_DATA8(0x3A);

    LCD_WR_REG(0xB3); 
    LCD_WR_DATA8(0x05);  
    LCD_WR_DATA8(0x3A);
    LCD_WR_DATA8(0x3A);
    LCD_WR_DATA8(0x05);
    LCD_WR_DATA8(0x3A);
    LCD_WR_DATA8(0x3A);

    LCD_WR_REG(0xB4);
    LCD_WR_DATA8(0x03);

    LCD_WR_REG(0xC0);
    LCD_WR_DATA8(0x62);
    LCD_WR_DATA8(0x02);
    LCD_WR_DATA8(0x04);

    LCD_WR_REG(0xC1);
    LCD_WR_DATA8(0xC0);

    LCD_WR_REG(0xC2);
    LCD_WR_DATA8(0x0D);
    LCD_WR_DATA8(0x00);

    LCD_WR_REG(0xC3);
    LCD_WR_DATA8(0x8D);
    LCD_WR_DATA8(0x6A);   

    LCD_WR_REG(0xC4);
    LCD_WR_DATA8(0x8D); 
    LCD_WR_DATA8(0xEE); 

    LCD_WR_REG(0xC5);  /*VCOM*/
    LCD_WR_DATA8(0x0E);    

    LCD_WR_REG(0xE0);
    LCD_WR_DATA8(0x10);
    LCD_WR_DATA8(0x0E);
    LCD_WR_DATA8(0x02);
    LCD_WR_DATA8(0x03);
    LCD_WR_DATA8(0x0E);
    LCD_WR_DATA8(0x07);
    LCD_WR_DATA8(0x02);
    LCD_WR_DATA8(0x07);
    LCD_WR_DATA8(0x0A);
    LCD_WR_DATA8(0x12);
    LCD_WR_DATA8(0x27);
    LCD_WR_DATA8(0x37);
    LCD_WR_DATA8(0x00);
    LCD_WR_DATA8(0x0D);
    LCD_WR_DATA8(0x0E);
    LCD_WR_DATA8(0x10);

    LCD_WR_REG(0xE1);
    LCD_WR_DATA8(0x10);
    LCD_WR_DATA8(0x0E);
    LCD_WR_DATA8(0x03);
    LCD_WR_DATA8(0x03);
    LCD_WR_DATA8(0x0F);
    LCD_WR_DATA8(0x06);
    LCD_WR_DATA8(0x02);
    LCD_WR_DATA8(0x08);
    LCD_WR_DATA8(0x0A);
    LCD_WR_DATA8(0x13);
    LCD_WR_DATA8(0x26);
    LCD_WR_DATA8(0x36);
    LCD_WR_DATA8(0x00);
    LCD_WR_DATA8(0x0D);
    LCD_WR_DATA8(0x0E);
    LCD_WR_DATA8(0x10);

    LCD_WR_REG(0x3A); 
    LCD_WR_DATA8(0x05);

    LCD_WR_REG(0x36);
    if(USE_HORIZONTAL==0)LCD_WR_DATA8(0x08);
    else if(USE_HORIZONTAL==1)LCD_WR_DATA8(0xC8);
    else if(USE_HORIZONTAL==2)LCD_WR_DATA8(0x78);
    else LCD_WR_DATA8(0xA8);

    LCD_WR_REG(0x29); 
} 


/******************************************************************************
      函数说明：LCD清屏函数
      入口数据：无
      返回值：  无
******************************************************************************/
void LCD_Clear(uint16_t Color)
{
    uint16_t i,j;      
    LCD_Address_Set(0,0,LCD_W-1,LCD_H-1);
    for(i=0;i<LCD_W;i++)
      {
            for (j=0;j<LCD_H;j++)
                {
                    LCD_WR_DATA(Color);
                }
      }
}


/******************************************************************************
      函数说明：LCD显示汉字
      入口数据：x,y   起始坐标
                index 汉字的序号
                size  字号
      返回值：  无
******************************************************************************/
void LCD_ShowChinese(uint16_t x,uint16_t y,uint8_t index,uint8_t size,uint16_t color)    
{  
    uint8_t i,j;
    uint8_t *temp,size1;
    if(size==16){temp=Hzk16;}//选择字号
    if(size==32){temp=Hzk32;}
    LCD_Address_Set(x,y,x+size-1,y+size-1); //设置一个汉字的区域
    size1=size*size/8;//一个汉字所占的字节
    temp+=index*size1;//写入的起始位置
    for(j=0;j<size1;j++)
    {
        for(i=0;i<8;i++)
        {
             if((*temp&(1<<i))!=0)//从数据的低位开始读
            {
                LCD_WR_DATA(color);//点亮
            }
            else
            {
                LCD_WR_DATA(BACK_COLOR);//不点亮
            }
        }
        temp++;
     }
}


/******************************************************************************
      函数说明：LCD显示汉字
      入口数据：x,y   起始坐标
      返回值：  无
******************************************************************************/
void LCD_DrawPoint(uint16_t x,uint16_t y,uint16_t color)
{
    LCD_Address_Set(x,y,x,y);//设置光标位置 
    LCD_WR_DATA(color);
} 


/******************************************************************************
      函数说明：LCD画一个大的点
      入口数据：x,y   起始坐标
      返回值：  无
******************************************************************************/
void LCD_DrawPoint_big(uint16_t x,uint16_t y,uint16_t color)
{
    LCD_Fill(x-1,y-1,x+1,y+1,color);
} 


/******************************************************************************
      函数说明：在指定区域填充颜色
      入口数据：xsta,ysta   起始坐标
                xend,yend   终止坐标
      返回值：  无
******************************************************************************/
void LCD_Fill(uint16_t xsta,uint16_t ysta,uint16_t xend,uint16_t yend,uint16_t color)
{          
    uint16_t i,j; 
    LCD_Address_Set(xsta,ysta,xend,yend);      //设置光标位置 
    for(i=ysta;i<=yend;i++)
    {                                                                
        for(j=xsta;j<=xend;j++)LCD_WR_DATA(color);//设置光标位置         
    }                               
}


/******************************************************************************
      函数说明：画线
      入口数据：x1,y1   起始坐标
                x2,y2   终止坐标
      返回值：  无
******************************************************************************/
void LCD_DrawLine(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2,uint16_t color)
{
    uint16_t t; 
    int xerr=0,yerr=0,delta_x,delta_y,distance;
    int incx,incy,uRow,uCol;
    delta_x=x2-x1; //计算坐标增量 
    delta_y=y2-y1;
    uRow=x1;//画线起点坐标
    uCol=y1;
    if(delta_x>0)incx=1; //设置单步方向 
    else if (delta_x==0)incx=0;//垂直线 
    else {incx=-1;delta_x=-delta_x;}
    if(delta_y>0)incy=1;
    else if (delta_y==0)incy=0;//水平线 
    else {incy=-1;delta_y=-delta_x;}
    if(delta_x>delta_y)distance=delta_x; //选取基本增量坐标轴 
    else distance=delta_y;
    for(t=0;t<distance+1;t++)
    {
        LCD_DrawPoint(uRow,uCol,color);//画点
        xerr+=delta_x;
        yerr+=delta_y;
        if(xerr>distance)
        {
            xerr-=distance;
            uRow+=incx;
        }
        if(yerr>distance)
        {
            yerr-=distance;
            uCol+=incy;
        }
    }
}


/******************************************************************************
      函数说明：画矩形
      入口数据：x1,y1   起始坐标
                x2,y2   终止坐标
      返回值：  无
******************************************************************************/
void LCD_DrawRectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2,uint16_t color)
{
    LCD_DrawLine(x1,y1,x2,y1,color);
    LCD_DrawLine(x1,y1,x1,y2,color);
    LCD_DrawLine(x1,y2,x2,y2,color);
    LCD_DrawLine(x2,y1,x2,y2,color);
}


/******************************************************************************
      函数说明：画圆
      入口数据：x0,y0   圆心坐标
                r       半径
      返回值：  无
******************************************************************************/
void Draw_Circle(uint16_t x0,uint16_t y0,uint8_t r,uint16_t color)
{
    int a,b;
    a=0;b=r;      
    while(a<=b)
    {
        LCD_DrawPoint(x0-b,y0-a,color);             //3           
        LCD_DrawPoint(x0+b,y0-a,color);             //0           
        LCD_DrawPoint(x0-a,y0+b,color);             //1                
        LCD_DrawPoint(x0-a,y0-b,color);             //2             
        LCD_DrawPoint(x0+b,y0+a,color);             //4               
        LCD_DrawPoint(x0+a,y0-b,color);             //5
        LCD_DrawPoint(x0+a,y0+b,color);             //6 
        LCD_DrawPoint(x0-b,y0+a,color);             //7
        a++;
        if((a*a+b*b)>(r*r))//判断要画的点是否过远
        {
            b--;
        }
    }
}


/******************************************************************************
      函数说明：显示字符
      入口数据：x,y    起点坐标
                num    要显示的字符
                mode   1叠加方式  0非叠加方式
      返回值：  无
******************************************************************************/
void LCD_ShowChar(uint16_t x,uint16_t y,uint8_t num,uint8_t mode,uint16_t color)
{
    uint8_t temp;
    uint8_t pos,t;
      uint16_t x0=x;    
    if(x>LCD_W-16||y>LCD_H-16)return;        //设置窗口           
    num=num-' ';//得到偏移后的值
    LCD_Address_Set(x,y,x+8-1,y+16-1);      //设置光标位置 
    if(!mode) //非叠加方式
    {
        for(pos=0;pos<16;pos++)
        { 
            temp=asc2_1608[(uint16_t)num*16+pos];         //调用1608字体
            for(t=0;t<8;t++)
            {                 
                if(temp&0x01)LCD_WR_DATA(color);
                else LCD_WR_DATA(BACK_COLOR);
                temp>>=1;
                x++;
            }
            x=x0;
            y++;
        }    
    }else//叠加方式
    {
        for(pos=0;pos<16;pos++)
        {
            temp=asc2_1608[(uint16_t)num*16+pos];         //调用1608字体
            for(t=0;t<8;t++)
            {                 
                if(temp&0x01)LCD_DrawPoint(x+t,y+pos,color);//画一个点     
                temp>>=1; 
            }
        }
    }                     
}


/******************************************************************************
      函数说明：显示字符串
      入口数据：x,y    起点坐标
                *p     字符串起始地址
      返回值：  无
******************************************************************************/
void LCD_ShowString(uint16_t x,uint16_t y,const uint8_t *p,uint16_t color)
{         
    while(*p!='\0')
    {       
        if(x>LCD_W-16){x=0;y+=16;}
        if(y>LCD_H-16){y=x=0;LCD_Clear(RED);}
        LCD_ShowChar(x,y,*p,0,color);
        x+=8;
        p++;
    }  
}


/******************************************************************************
      函数说明：显示数字
      入口数据：m底数，n指数
      返回值：  无
******************************************************************************/
uint32_t mypow(uint8_t m,uint8_t n)
{
    uint32_t result=1;     
    while(n--)result*=m;    
    return result;
}


/******************************************************************************
      函数说明：显示数字
      入口数据：x,y    起点坐标
                num    要显示的数字
                len    要显示的数字个数
      返回值：  无
******************************************************************************/
void LCD_ShowNum(uint16_t x,uint16_t y,uint16_t num,uint8_t len,uint16_t color)
{             
    uint8_t t,temp;
    uint8_t enshow=0;
    for(t=0;t<len;t++)
    {
        temp=(num/mypow(10,len-t-1))%10;
        if(enshow==0&&t<(len-1))
        {
            if(temp==0)
            {
                LCD_ShowChar(x+8*t,y,' ',0,color);
                continue;
            }else enshow=1; 
              
        }
         LCD_ShowChar(x+8*t,y,temp+48,0,color); 
    }
} 


/******************************************************************************
      函数说明：显示小数
      入口数据：x,y    起点坐标
                num    要显示的小数
                len    要显示的数字个数
      返回值：  无
******************************************************************************/
void LCD_ShowNum1(uint16_t x,uint16_t y,float num,uint8_t len,uint16_t color)
{             
    uint8_t t,temp;
    uint16_t num1;
    num1=num*100;
    for(t=0;t<len;t++)
    {
        temp=(num1/mypow(10,len-t-1))%10;
        if(t==(len-2))
        {
            LCD_ShowChar(x+8*(len-2),y,'.',0,color);
            t++;
            len+=1;
        }
         LCD_ShowChar(x+8*t,y,temp+48,0,color);
    }
}


/******************************************************************************
      函数说明：显示40x40图片
      入口数据：x,y    起点坐标
      返回值：  无
******************************************************************************/
void LCD_ShowPicture(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2)
{
    int i;
      LCD_Address_Set(x1,y1,x2,y2);
        for(i=0;i<1600;i++)
      {     
            LCD_WR_DATA8(image[i*2+1]);     
            LCD_WR_DATA8(image[i*2]);            
      }            
}

字库文件
oledfont.h 文件
$\\\color{red}{注意：不要遗漏该文件，或者自己制作字库！！！}$

#ifndef __OLEDFONT_H
#define __OLEDFONT_H        
//常用ASCII表
//偏移量32
//ASCII字符集
//偏移量32
//大小:12*6
#include "stdint.h"     
/************************************6*8的点阵************************************/


/****************************************32*32的点阵************************************/
uint8_t Hzk32[]={              

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x00,0x00,
0x00,0x70,0x00,0x00,0x00,0x60,0x00,0x00,0x00,0x60,0x00,0x00,0x00,0x60,0x00,0x00,
0x00,0x60,0x30,0x00,0x00,0xE0,0xFF,0x00,0xE0,0x7F,0xE0,0x01,0xE0,0x21,0xE0,0x00,
0x40,0x20,0x60,0x00,0xC0,0x20,0x60,0x00,0xC0,0xF8,0x73,0x00,0xC0,0x3E,0x30,0x00,
0x80,0x20,0x30,0x00,0x80,0x20,0x10,0x00,0x80,0x20,0x1E,0x00,0x80,0xFF,0x0F,0x00,
0x80,0x21,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x20,0x00,0x04,
0x00,0x60,0x00,0x04,0x00,0x60,0x00,0x0C,0x00,0xC0,0x01,0x0F,0x00,0x80,0xFF,0x07,
0x00,0x00,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*"电",0*/
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0xF0,0x00,0x00,0x81,0xFF,0x00,0x00,0xFF,0x07,0x00,
0x00,0x03,0x00,0x00,0x00,0x03,0x07,0x00,0x00,0x03,0x0E,0x00,0x00,0x03,0x06,0x00,
0x00,0x03,0x06,0x00,0x00,0x03,0x06,0x00,0x00,0x03,0x06,0x00,0x00,0x01,0xFE,0x00,
0x80,0xE1,0x3F,0x00,0x80,0x01,0x06,0x00,0x80,0x01,0x46,0x00,0x80,0x00,0xC6,0x01,
0xC0,0x00,0x86,0x01,0xC0,0x00,0x06,0x01,0x60,0x00,0x06,0x00,0x60,0x00,0x06,0x0F,
0x30,0xC0,0xFF,0x1F,0x10,0xFF,0x03,0x00,0x08,0x00,0x00,0x00,0x04,0x00,0x00,0x00,
0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*"压",1*/
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,
0x00,0x00,0x0E,0x00,0x00,0x00,0x0C,0x00,0xC0,0x00,0x08,0x00,0xC0,0x01,0x80,0x00,
0x80,0x03,0xF8,0x03,0x00,0xC0,0x3F,0x00,0x00,0xF0,0x03,0x00,0x00,0x00,0x07,0x00,
0x08,0x00,0x73,0x00,0x38,0x80,0xE1,0x00,0x30,0xC0,0xF0,0x01,0x20,0xE0,0x8F,0x01,
0x00,0xF0,0x01,0x00,0x00,0x31,0x10,0x00,0x80,0x00,0x60,0x00,0x80,0x10,0x63,0x00,
0xC0,0x70,0x23,0x00,0x40,0x30,0x22,0x00,0x60,0x30,0x22,0x20,0x60,0x30,0x22,0x20,
0x70,0x10,0x22,0x20,0x38,0x18,0x62,0x20,0x30,0x08,0xE3,0x30,0x20,0x0C,0xC2,0x3F,
0x00,0x03,0x00,0x0F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*"流",2*/
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x1C,0x00,0x00,0x00,0x1F,0x00,0x00,0xF0,0x0C,0xF0,0x03,
0x60,0x84,0x8F,0x03,0x60,0x86,0x81,0x03,0x60,0x02,0x81,0x01,0x60,0x06,0x81,0x01,
0x60,0x06,0x81,0x01,0x60,0x04,0x9F,0x01,0x60,0x0C,0x81,0x01,0x60,0x0F,0x81,0x01,
0x60,0x0E,0x81,0x01,0x60,0x08,0x81,0x01,0x60,0x00,0xBF,0x01,0x60,0x00,0x81,0x01,
0x60,0x00,0x81,0x01,0x60,0x00,0x81,0x01,0x60,0x00,0x81,0x01,0x60,0x00,0x81,0x1D,
0x60,0x00,0xFF,0x7F,0x60,0xFC,0x07,0x00,0x60,0x00,0x00,0x00,0x60,0x00,0x00,0x00,
0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*"阻",3*/};

const uint8_t asc2_1608[1520]={
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x00,0x00,0x18,0x18,0x00,0x00,
0x00,0x48,0x6C,0x24,0x12,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x24,0x24,0x24,0x7F,0x12,0x12,0x12,0x7F,0x12,0x12,0x12,0x00,0x00,
0x00,0x00,0x08,0x1C,0x2A,0x2A,0x0A,0x0C,0x18,0x28,0x28,0x2A,0x2A,0x1C,0x08,0x08,
0x00,0x00,0x00,0x22,0x25,0x15,0x15,0x15,0x2A,0x58,0x54,0x54,0x54,0x22,0x00,0x00,
0x00,0x00,0x00,0x0C,0x12,0x12,0x12,0x0A,0x76,0x25,0x29,0x11,0x91,0x6E,0x00,0x00,
0x00,0x06,0x06,0x04,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x40,0x20,0x10,0x10,0x08,0x08,0x08,0x08,0x08,0x08,0x10,0x10,0x20,0x40,0x00,
0x00,0x02,0x04,0x08,0x08,0x10,0x10,0x10,0x10,0x10,0x10,0x08,0x08,0x04,0x02,0x00,
0x00,0x00,0x00,0x00,0x08,0x08,0x6B,0x1C,0x1C,0x6B,0x08,0x08,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x08,0x08,0x08,0x08,0x7F,0x08,0x08,0x08,0x08,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x06,0x04,0x03,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x06,0x00,0x00,
0x00,0x00,0x80,0x40,0x40,0x20,0x20,0x10,0x10,0x08,0x08,0x04,0x04,0x02,0x02,0x00,
0x00,0x00,0x00,0x18,0x24,0x42,0x42,0x42,0x42,0x42,0x42,0x42,0x24,0x18,0x00,0x00,
0x00,0x00,0x00,0x08,0x0E,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x3E,0x00,0x00,
0x00,0x00,0x00,0x3C,0x42,0x42,0x42,0x20,0x20,0x10,0x08,0x04,0x42,0x7E,0x00,0x00,
0x00,0x00,0x00,0x3C,0x42,0x42,0x20,0x18,0x20,0x40,0x40,0x42,0x22,0x1C,0x00,0x00,
0x00,0x00,0x00,0x20,0x30,0x28,0x24,0x24,0x22,0x22,0x7E,0x20,0x20,0x78,0x00,0x00,
0x00,0x00,0x00,0x7E,0x02,0x02,0x02,0x1A,0x26,0x40,0x40,0x42,0x22,0x1C,0x00,0x00,
0x00,0x00,0x00,0x38,0x24,0x02,0x02,0x1A,0x26,0x42,0x42,0x42,0x24,0x18,0x00,0x00,
0x00,0x00,0x00,0x7E,0x22,0x22,0x10,0x10,0x08,0x08,0x08,0x08,0x08,0x08,0x00,0x00,
0x00,0x00,0x00,0x3C,0x42,0x42,0x42,0x24,0x18,0x24,0x42,0x42,0x42,0x3C,0x00,0x00,
0x00,0x00,0x00,0x18,0x24,0x42,0x42,0x42,0x64,0x58,0x40,0x40,0x24,0x1C,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00,0x00,0x00,0x00,0x18,0x18,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x00,0x00,0x08,0x08,0x04,
0x00,0x00,0x00,0x40,0x20,0x10,0x08,0x04,0x02,0x04,0x08,0x10,0x20,0x40,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0x00,0x00,0x00,0x7F,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x02,0x04,0x08,0x10,0x20,0x40,0x20,0x10,0x08,0x04,0x02,0x00,0x00,
0x00,0x00,0x00,0x3C,0x42,0x42,0x46,0x40,0x20,0x10,0x10,0x00,0x18,0x18,0x00,0x00,
0x00,0x00,0x00,0x1C,0x22,0x5A,0x55,0x55,0x55,0x55,0x2D,0x42,0x22,0x1C,0x00,0x00,
0x00,0x00,0x00,0x08,0x08,0x18,0x14,0x14,0x24,0x3C,0x22,0x42,0x42,0xE7,0x00,0x00,
0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x1E,0x22,0x42,0x42,0x42,0x22,0x1F,0x00,0x00,
0x00,0x00,0x00,0x7C,0x42,0x42,0x01,0x01,0x01,0x01,0x01,0x42,0x22,0x1C,0x00,0x00,
0x00,0x00,0x00,0x1F,0x22,0x42,0x42,0x42,0x42,0x42,0x42,0x42,0x22,0x1F,0x00,0x00,
0x00,0x00,0x00,0x3F,0x42,0x12,0x12,0x1E,0x12,0x12,0x02,0x42,0x42,0x3F,0x00,0x00,
0x00,0x00,0x00,0x3F,0x42,0x12,0x12,0x1E,0x12,0x12,0x02,0x02,0x02,0x07,0x00,0x00,
0x00,0x00,0x00,0x3C,0x22,0x22,0x01,0x01,0x01,0x71,0x21,0x22,0x22,0x1C,0x00,0x00,
0x00,0x00,0x00,0xE7,0x42,0x42,0x42,0x42,0x7E,0x42,0x42,0x42,0x42,0xE7,0x00,0x00,
0x00,0x00,0x00,0x3E,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x3E,0x00,0x00,
0x00,0x00,0x00,0x7C,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x11,0x0F,
0x00,0x00,0x00,0x77,0x22,0x12,0x0A,0x0E,0x0A,0x12,0x12,0x22,0x22,0x77,0x00,0x00,
0x00,0x00,0x00,0x07,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x42,0x7F,0x00,0x00,
0x00,0x00,0x00,0x77,0x36,0x36,0x36,0x36,0x2A,0x2A,0x2A,0x2A,0x2A,0x6B,0x00,0x00,
0x00,0x00,0x00,0xE3,0x46,0x46,0x4A,0x4A,0x52,0x52,0x52,0x62,0x62,0x47,0x00,0x00,
0x00,0x00,0x00,0x1C,0x22,0x41,0x41,0x41,0x41,0x41,0x41,0x41,0x22,0x1C,0x00,0x00,
0x00,0x00,0x00,0x3F,0x42,0x42,0x42,0x42,0x3E,0x02,0x02,0x02,0x02,0x07,0x00,0x00,
0x00,0x00,0x00,0x1C,0x22,0x41,0x41,0x41,0x41,0x41,0x4D,0x53,0x32,0x1C,0x60,0x00,
0x00,0x00,0x00,0x3F,0x42,0x42,0x42,0x3E,0x12,0x12,0x22,0x22,0x42,0xC7,0x00,0x00,
0x00,0x00,0x00,0x7C,0x42,0x42,0x02,0x04,0x18,0x20,0x40,0x42,0x42,0x3E,0x00,0x00,
0x00,0x00,0x00,0x7F,0x49,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x1C,0x00,0x00,
0x00,0x00,0x00,0xE7,0x42,0x42,0x42,0x42,0x42,0x42,0x42,0x42,0x42,0x3C,0x00,0x00,
0x00,0x00,0x00,0xE7,0x42,0x42,0x22,0x24,0x24,0x14,0x14,0x18,0x08,0x08,0x00,0x00,
0x00,0x00,0x00,0x6B,0x49,0x49,0x49,0x49,0x55,0x55,0x36,0x22,0x22,0x22,0x00,0x00,
0x00,0x00,0x00,0xE7,0x42,0x24,0x24,0x18,0x18,0x18,0x24,0x24,0x42,0xE7,0x00,0x00,
0x00,0x00,0x00,0x77,0x22,0x22,0x14,0x14,0x08,0x08,0x08,0x08,0x08,0x1C,0x00,0x00,
0x00,0x00,0x00,0x7E,0x21,0x20,0x10,0x10,0x08,0x04,0x04,0x42,0x42,0x3F,0x00,0x00,
0x00,0x78,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x78,0x00,
0x00,0x00,0x02,0x02,0x04,0x04,0x08,0x08,0x08,0x10,0x10,0x20,0x20,0x20,0x40,0x40,
0x00,0x1E,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x1E,0x00,
0x00,0x38,0x44,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,
0x00,0x06,0x08,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3C,0x42,0x78,0x44,0x42,0x42,0xFC,0x00,0x00,
0x00,0x00,0x00,0x03,0x02,0x02,0x02,0x1A,0x26,0x42,0x42,0x42,0x26,0x1A,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x38,0x44,0x02,0x02,0x02,0x44,0x38,0x00,0x00,
0x00,0x00,0x00,0x60,0x40,0x40,0x40,0x78,0x44,0x42,0x42,0x42,0x64,0xD8,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3C,0x42,0x7E,0x02,0x02,0x42,0x3C,0x00,0x00,
0x00,0x00,0x00,0xF0,0x88,0x08,0x08,0x7E,0x08,0x08,0x08,0x08,0x08,0x3E,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7C,0x22,0x22,0x1C,0x02,0x3C,0x42,0x42,0x3C,
0x00,0x00,0x00,0x03,0x02,0x02,0x02,0x3A,0x46,0x42,0x42,0x42,0x42,0xE7,0x00,0x00,
0x00,0x00,0x00,0x0C,0x0C,0x00,0x00,0x0E,0x08,0x08,0x08,0x08,0x08,0x3E,0x00,0x00,
0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x38,0x20,0x20,0x20,0x20,0x20,0x20,0x22,0x1E,
0x00,0x00,0x00,0x03,0x02,0x02,0x02,0x72,0x12,0x0A,0x16,0x12,0x22,0x77,0x00,0x00,
0x00,0x00,0x00,0x0E,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x3E,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0x92,0x92,0x92,0x92,0x92,0xB7,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3B,0x46,0x42,0x42,0x42,0x42,0xE7,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3C,0x42,0x42,0x42,0x42,0x42,0x3C,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1B,0x26,0x42,0x42,0x42,0x22,0x1E,0x02,0x07,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x78,0x44,0x42,0x42,0x42,0x44,0x78,0x40,0xE0,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x77,0x4C,0x04,0x04,0x04,0x04,0x1F,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7C,0x42,0x02,0x3C,0x40,0x42,0x3E,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x08,0x08,0x3E,0x08,0x08,0x08,0x08,0x08,0x30,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x63,0x42,0x42,0x42,0x42,0x62,0xDC,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE7,0x42,0x24,0x24,0x14,0x08,0x08,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xEB,0x49,0x49,0x55,0x55,0x22,0x22,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x76,0x24,0x18,0x18,0x18,0x24,0x6E,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE7,0x42,0x24,0x24,0x14,0x18,0x08,0x08,0x07,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7E,0x22,0x10,0x08,0x08,0x44,0x7E,0x00,0x00,
0x00,0xC0,0x20,0x20,0x20,0x20,0x20,0x10,0x20,0x20,0x20,0x20,0x20,0x20,0xC0,0x00,
0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,
0x00,0x06,0x08,0x08,0x08,0x08,0x08,0x10,0x08,0x08,0x08,0x08,0x08,0x08,0x06,0x00,
0x0C,0x32,0xC2,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
}; 




uint8_t Hzk16[]={


0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0xFC,0x1F,0x84,0x10,0x84,0x10,0x84,0x10,
0x84,0x10,0x84,0x10,0xFC,0x1F,0x84,0x10,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,/*"中",0*/

0xF8,0x0F,0x08,0x08,0xF8,0x0F,0x08,0x08,0xF8,0x0F,0x80,0x00,0xFF,0x7F,0x00,0x00,
0xF8,0x0F,0x08,0x08,0x08,0x08,0xF8,0x0F,0x80,0x00,0x84,0x10,0xA2,0x20,0x40,0x00,/*"景",1*/

0x00,0x00,0xFE,0x3F,0x02,0x20,0xF2,0x27,0x02,0x20,0x02,0x20,0xFA,0x2F,0x22,0x21,
0x22,0x21,0x22,0x21,0x12,0x29,0x12,0x29,0x0A,0x2E,0x02,0x20,0xFE,0x3F,0x02,0x20,/*"园",2*/

0x80,0x00,0x80,0x00,0x80,0x00,0xFC,0x1F,0x84,0x10,0x84,0x10,0x84,0x10,0xFC,0x1F,
0x84,0x10,0x84,0x10,0x84,0x10,0xFC,0x1F,0x84,0x50,0x80,0x40,0x80,0x40,0x00,0x7F,/*"电",3*/

0x00,0x00,0xFE,0x1F,0x00,0x08,0x00,0x04,0x00,0x02,0x80,0x01,0x80,0x00,0xFF,0x7F,
0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0xA0,0x00,0x40,0x00,/*"子",4*/

0x10,0x08,0xB8,0x08,0x0F,0x09,0x08,0x09,0x08,0x08,0xBF,0x08,0x08,0x09,0x1C,0x09,
0x2C,0x08,0x0A,0x78,0xCA,0x0F,0x09,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,/*"科",5*/

0x08,0x04,0x08,0x04,0x08,0x04,0xC8,0x7F,0x3F,0x04,0x08,0x04,0x08,0x04,0xA8,0x3F,
0x18,0x21,0x0C,0x11,0x0B,0x12,0x08,0x0A,0x08,0x04,0x08,0x0A,0x8A,0x11,0x64,0x60,/*"技",6*/



};

#endif

main.c 文件

#include "gd32f4xx.h"
#include "systick.h"
#include <stdio.h>

#include "gpio.h"
#include "uart.h"
#include "spi.h"
#include "lcd.h"

int main(void)
{
    systick_config();    //配置系统时钟
    
    GPIO_Init();
    USART_Init();

    SPI_Init();
    LCD_Init();            //初始化LCD  
    LCD_Clear(WHITE);
    BACK_COLOR=LGRAY;
    
    USART_TransmitString("这是一个串口测试\r\n");
    printf("串口重定向测试\r\n");
    while(1) 
    {
        gpio_bit_toggle(GPIOC, GPIO_PIN_6);    //反转PC6
        delay_1ms(100);
        
        LCD_ShowChinese(0,0,0,32,RED);  //电
        LCD_ShowChinese(32,0,1,32,RED);  //压
      
        LCD_ShowChinese(0,48,0,32,MAGENTA);  //电
        LCD_ShowChinese(31,48,2,32,MAGENTA);  //流
      
        LCD_ShowChinese(96,0,0,32,BLUE);  //电
        LCD_ShowChinese(128,0,3,32,BLUE);  //阻
    }
}