STM32F103ZET6驱动的ST7735s一直出现白屏是为啥呢？怎么解决？

我看网上的都不全，这次我给大家发个全的
我查了好多资料，感觉没有什么问题
毕竟写个SPI时序就能打点
可他就是不显示我打的点
一直白屏
跪求大佬帮我看看
感谢至极


一、这是tft.c文件


#include “tft.h”
#include “sys.h”
#include “delay.h”
#include “stm32f10x.h”


#include “spi.h”


//向SPI写一个8位数据


//u8 SPI2_WriteData(u8 qq)
//{
// unsigned char i=0;
//
LCD_CS_SET;
delay_us(20);
// for(i=8;i>0;i–)
// {
//
// if(qq&0x80)
// LCD_SDA=1; //数据线拉高，输出数据
// else LCD_SDA=0;
// LCD_SCL=0;
// LCD_SCL=1;
// qq<<=1;
// }
//}


void Lcd_WriteIndex(u8 Index) //写命令
{
u8 i=8;


    LCD_CS=0;
    LCD_RS=0;
    LCD_SCL=0;


while(i--)
{
        if(Index&0x80){LCD_SDA=1;}
        else{LCD_SDA=0;}
        LCD_SCL=1;
       
        LCD_SCL=0;
        Index<<=1;
}       
LCD_CS=1;  


}


void Lcd_WriteData(u8 aa) //写数据
{
// LCD_CS=0; //CLR是低电平
// LCD_RS=1; //SET是高电平
// SPI2_WriteData(aa);
// LCD_CS=1;


u8 i=8;


LCD_CS=0;
LCD_RS=1;
LCD_SCL=0;
while(i--)
{
          if(aa&0x80){LCD_SDA=1;}
          else{LCD_SDA=0;}
          LCD_SCL=1;
       
          LCD_SCL=0;
          aa<<=1;
}
LCD_CS=1;


}


//向液晶屏写一个16位数据
void Lcd_WriteData_16Bit(u16 dd)
{
LCD_CS=0;
LCD_RS=1;
SPI2_WriteData(dd>>8); //写入高8位数据
SPI2_WriteData(dd); //写入低8位数据
LCD_CS=1;
}


//复位
void Lcd_Reset(void)
{
LCD_RST=0;
delay_ms(100);
LCD_RST=1;
delay_ms(100);
}


/*************************************************


设置lcd显示区域，在此区域写点数据自动换行


******************************/
void Lcd_SetRegion(u16 x_start,u16 y_start,u16 x_end,u16 y_end)
{
Lcd_WriteIndex(0x2a);
Lcd_WriteData(0x00);
Lcd_WriteData(x_start+2);
Lcd_WriteData(0x00);
Lcd_WriteData(x_end+2);


Lcd_WriteIndex(0x2b);
Lcd_WriteData(0x00);
Lcd_WriteData(y_start+1);
Lcd_WriteData(0x00);
Lcd_WriteData(y_end+1);


Lcd_WriteIndex(0x2c);


}


//-------------------------------------------------------------------------------------------------------------------
// @brief 液晶初始化
// @return void
// @since v1.0
// Sample usage:
//-------------------------------------------------------------------------------------------------------------------
void lcd_init(void)
{
Lcd_Reset(); //Reset before LCD Init.


delay_ms(10);
Lcd_WriteIndex(0x11);
delay_ms(120);


Lcd_WriteIndex(0xB1);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);


Lcd_WriteIndex(0xB2);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);


Lcd_WriteIndex(0xB3);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);


Lcd_WriteIndex(0xB4);
Lcd_WriteData(0x07);


Lcd_WriteIndex(0xC0);
Lcd_WriteData(0xA2);
Lcd_WriteData(0x02);
Lcd_WriteData(0x84);
Lcd_WriteIndex(0xC1);
Lcd_WriteData(0xC5);


Lcd_WriteIndex(0xC2);
Lcd_WriteData(0x0A);
Lcd_WriteData(0x00);


Lcd_WriteIndex(0xC3);
Lcd_WriteData(0x8A);
Lcd_WriteData(0x2A);
Lcd_WriteIndex(0xC4);
Lcd_WriteData(0x8A);
Lcd_WriteData(0xEE);


Lcd_WriteIndex(0xC5);
Lcd_WriteData(0x0E);


Lcd_WriteIndex(0x36);


// switch(TFT_DISPLAY_DIR)//y x v
// {
// case 0: Lcd_WriteData(1<<7 | 1<<6 | 0<<5); break; //竖屏模式
// case 1: Lcd_WriteData(0<<7 | 0<<6 | 0<<5); break; //竖屏模式 旋转180
// case 2: Lcd_WriteData(1<<7 | 0<<6 | 1<<5); break; //横屏模式
// case 3: Lcd_WriteData(0<<7 | 1<<6 | 1<<5); break; //横屏模式 旋转180
// }


Lcd_WriteIndex(0xe0);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x1a);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x18);
Lcd_WriteData(0x2f);
Lcd_WriteData(0x28);
Lcd_WriteData(0x20);
Lcd_WriteData(0x22);
Lcd_WriteData(0x1f);
Lcd_WriteData(0x1b);
Lcd_WriteData(0x23);
Lcd_WriteData(0x37);
Lcd_WriteData(0x00);        
Lcd_WriteData(0x07);
Lcd_WriteData(0x02);
Lcd_WriteData(0x10);


Lcd_WriteIndex(0xe1);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x1b);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x17);
Lcd_WriteData(0x33);
Lcd_WriteData(0x2c);
Lcd_WriteData(0x29);
Lcd_WriteData(0x2e);
Lcd_WriteData(0x30);
Lcd_WriteData(0x30);
Lcd_WriteData(0x39);
Lcd_WriteData(0x3f);
Lcd_WriteData(0x00);
Lcd_WriteData(0x07);
Lcd_WriteData(0x03);
Lcd_WriteData(0x10);  


Lcd_WriteIndex(0x2a);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00+2);
Lcd_WriteData(0x00);
Lcd_WriteData(0x80+2);


Lcd_WriteIndex(0x2b);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00+3);
Lcd_WriteData(0x00);
Lcd_WriteData(0x80+3);


Lcd_WriteIndex(0xF0);
Lcd_WriteData(0x01);
Lcd_WriteIndex(0xF6);
Lcd_WriteData(0x00);


Lcd_WriteIndex(0x3A);
Lcd_WriteData(0x05);


Lcd_WriteIndex(0x29);


dsp_single_colour(BLACK);


}


//设置整个屏幕的颜色


void dsp_single_colour(int color)
{
u8 i,j;


Lcd_SetRegion(0,0,128-1,128-1);


for (i=0;i<127;i++)


        for (j=0;j<127;j++)


            Lcd_WriteData_16Bit(color);
}


//画点


void lcd_drawpoint(u16 x,u16 y,u16 color)
{
Lcd_SetRegion(x,y,x,y);


    Lcd_WriteData_16Bit(color);


}


void Lcd_WriteReg(u8 Cmd,u8 Data)
{
Lcd_WriteIndex(Cmd);


Lcd_WriteData(Data);
}


二、tft.h文件
#ifndef _TFT_H
#define _TFT_H


#include “stm32f10x.h”
#include “spi.h”


//-------常用颜色----------
#define RED 0XF800 //红色
#define GREEN 0X07E0 //绿色
#define BLUE 0X001F //蓝色
#define BRED 0XF81F
#define GRED 0XFFE0 //灰色
#define GBLUE 0X07FF //
#define BLACK 0X0000 //黑色
#define WHITE 0XFFFF //白色
#define YELLOW 0xFFE0 //黄色


//#define LCD_CTRLA GPIOA //定义TFT数据端口
//#define LCD_CTRLB GPIOB //定义TFT数据端口


//PA4 PA5 PA7
//#define LCD_SCL GPIO_Pin_13 //PB13—>>TFT --SCL/SCK
//#define LCD_SDA GPIO_Pin_15 //PB15 MOSI—>>TFT --SDA/DIN
//#define LCD_CS GPIO_Pin_4 //MCU_PB11—>>TFT --CS/CE


PB10 PB1 PB0
//#define LCD_LED GPIO_Pin_10 //MCU_PB9—>>TFT --BL
//#define LCD_RS GPIO_Pin_1 //PB11—>>TFT --RS/DC DC数据命令位
//#define LCD_RST GPIO_Pin_0 //PB10—>>TFT --RST


//#define LCD_CS_SET(x) LCD_CTRL->ODR=(LCD_CTRL->ODR&~LCD_CS)|(x ? LCD_CS:0)


#define LCD_SCL PBout(13)
#define LCD_SDA PBout(15)
#define LCD_CS PAout(4) //片选


#define LCD_RS PBout(1) //时钟/数据
#define LCD_RST PBout(0)


液晶控制口置1操作语句宏定义
//#define LCD_SCL_SET LCD_CTRLB->BSRR=LCD_SCL
//#define LCD_SDA_SET LCD_CTRLB->BSRR=LCD_SDA
//#define LCD_CS_SET LCD_CTRLA->BSRR=LCD_CS


//
//#define LCD_LED_SET LCD_CTRLB->BSRR=LCD_LED
//#define LCD_RS_SET LCD_CTRLB->BSRR=LCD_RS
//#define LCD_RST_SET LCD_CTRLB->BSRR=LCD_RST


液晶控制口置0操作语句宏定义
//#define LCD_SCL_CLR LCD_CTRLA->BRR=LCD_SCL
//#define LCD_SDA_CLR LCD_CTRLA->BRR=LCD_SDA
//#define LCD_CS_CLR LCD_CTRLA->BRR=LCD_CS
//
//#define LCD_LED_CLR LCD_CTRLB->BRR=LCD_LED
//#define LCD_RST_CLR LCD_CTRLB->BRR=LCD_RST
//#define LCD_RS_CLR LCD_CTRLB->BRR=LCD_RS


//#define LCD_DATAOUT(x) LCD_DATA->ODR=x; //数据输出
//#define LCD_DATAIN LCD_DATA->IDR; //数据输入


u8 SPI2_WriteData(u8 qq);
void Lcd_WriteIndex(u8 Index);
void Lcd_WriteData(u8 aa);
void Lcd_WriteData_16Bit(u16 dd);
void Lcd_Reset(void);
void Lcd_SetRegion(u16 x_start,u16 y_start,u16 x_end,u16 y_end);
void lcd_init(void);
void lcd_drawpoint(u16 x,u16 y,u16 color);
void dsp_single_colour(int color);
void Lcd_WriteReg(u8 Cmd,u8 Data);


#endif


三、spi.c文件
#include “spi.h”
#include “tft.h”
#include “delay.h”


//以下是SPI模块的初始化代码，配置成主机模式，访问SD Card/W25Q64/NRF24L01
//SPI口初始化
//这里针是对SPI2的初始化


//初始化IO口B12、B14、B15


void SPI2_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;


RCC_APB2PeriphClockCmd(        RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE );//PB时钟使能






GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 |GPIO_Pin_15|GPIO_Pin_10 | GPIO_Pin_0 | GPIO_Pin_1;//GPIO_Pin_13 |
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //PB13/14/15复用推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIOB


// GPIO_SetBits(GPIOB,GPIO_Pin_13 |GPIO_Pin_15|GPIO_Pin_10 | GPIO_Pin_0 | GPIO_Pin_1); //PB13/14/15上拉//GPIO_Pin_13|


GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_13 |GPIO_Pin_15;//GPIO_Pin_13 |
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  //PB13/14/15复用推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOB


GPIO_SetBits(GPIOA,GPIO_Pin_4);  //PB13/14/15上拉//GPIO_Pin_13|




GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 |GPIO_Pin_15|GPIO_Pin_10 | GPIO_Pin_0 | GPIO_Pin_1;//GPIO_Pin_13 |
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //PB13/14/15复用推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOD, &GPIO_InitStructure);//初始化GPIOB


GPIO_SetBits(GPIOD,GPIO_Pin_13 |GPIO_Pin_15|GPIO_Pin_10 | GPIO_Pin_0 | GPIO_Pin_1);  //PB13/14/15上拉//GPIO_Pin_13|












RCC_APB1PeriphClockCmd(        RCC_APB1Periph_SPI2,  ENABLE );//SPI2时钟使能


SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;  //设置SPI单向或者双向的数据模式:SPI设置为双线双向全双工
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;                //设置SPI工作模式:设置为主SPI
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;                //设置SPI的数据大小:SPI发送接收8位帧结构
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;                //串行同步时钟的空闲状态为低电平
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;        //串行同步时钟的第1个跳变沿（上升或下降）数据被采样
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;                //NSS信号由硬件（NSS管脚）还是软件（使用SSI位）管理:内部NSS信号有SSI位控制
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;                //定义波特率预分频的值:波特率预分频值为256
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;        //指定数据传输从MSB位还是LSB位开始:数据传输从MSB位开始
SPI_InitStructure.SPI_CRCPolynomial = 7;        //CRC值计算的多项式
SPI_Init(SPI2, &SPI_InitStructure);  //根据SPI_InitStruct中指定的参数初始化外设SPIx寄存器


SPI_Cmd(SPI2, ENABLE); //使能SPI外设


SPI2_WriteData(0xFF);//启动传输                 


}


SPIx 读写一个字节
TxData:要写入的字节
返回值:读取到的字节
//u8 SPI2_WriteData(u8 TxData)
//{
// u8 retry=0;
//
// while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET) //检查指定的SPI标志位设置与否:发送缓存空标志位
// {
// retry++;
// if(retry>200)return 0;
// }
//
// SPI_I2S_SendData(SPI2, TxData); //通过外设SPIx发送一个数据
//
// retry=0;


//
// while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET) //检查指定的SPI标志位设置与否:接受缓存非空标志位
// {
//
// retry++;
//
// if(retry>200)return 0;
// }
//
// return SPI_I2S_ReceiveData(SPI2); //返回通过SPIx最近接收的数据
//}


uint8_t SPI2_WriteData(u8 byte)
{
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET);


SPI_I2S_SendData(SPI2,byte);


while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);


return SPI_I2S_ReceiveData(SPI2);
}


向SPI写一个8位数据


//u8 SPI2_WriteData(u8 Data)
//{
// unsigned char i=0;
//
LCD_CS_SET;
delay_us(20);
// for(i=8;i>0;i–)
// {
//
// if(Data&0x80)
//
// LCD_SDA=1; //数据线拉高，输出数据
// else LCD_SDA=0;
//
//


delay_us(20);
// LCD_SCL=0;
delay_us(20);
//
// LCD_SCL=1;
// Data<<=1;
// }
//}


四、spi.h文件


#ifndef __SPI_H
#define __SPI_H
#include “sys.h”


void SPI2_Init(void); //初始化SPI口


//u8 SPI2_WriteData(u8 Data);
uint8_t SPI2_WriteData(u8 byte);


#endif


五、主函数


#include “stm32f10x.h”
#include “spi.h”
#include “tft.h”
#include “delay.h”
#include “usart.h”
#include “key.h”


int main(void)
{ delay_init();


  SPI2_Init();
  Lcd_Reset();
uart_init(9600);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);


KEY_Init();
lcd_init();



lcd_drawpoint(10,10,BLACK);

     lcd_drawpoint(12,10,BLACK);
while(1)


{
   
   
     lcd_drawpoint(13,10,BLACK);
     lcd_drawpoint(14,10,BLACK);
     lcd_drawpoint(15,10,BLACK);
       Lcd_WriteData(0xfe);
      
    if(!KEY0)
    {
// dsp_single_colour(GREEN);
Lcd_WriteData(0xfe);
Lcd_WriteData(1);
Lcd_WriteData(1);
Lcd_WriteData(1);
Lcd_WriteData(1);
Lcd_WriteData(1);
Lcd_WriteData(1);
printf(“222”);
delay_ms(50);


    }
}
}