最近用STM32103re的spi2 驱动一个ili9341tft lcd屏，用Lcd_clear刷新全屏时，只能刷到一部分，剩下的刷新不出来
有没有高手指点下！
这是SPI2驱动
void SPI2_Init(void)
{
    SPI_InitTypeDef  SPI_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;
    RCC_APB2PeriphClockCmd( RCC_APB2Periph_AFIO |RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOC, ENABLE );

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

   
    GPIO_SetBits(GPIOB,GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8;  //SPI CS
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOC, &GPIO_InitStructure);

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE );
    SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;  
    SPI_InitStructure.SPI_Mode = SPI_Mode_Master;              
    SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;               
    SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;              
    SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;        
    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;               
    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;               
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;      
    SPI_InitStructure.SPI_CRCPolynomial = 7;         
    SPI_Init(SPI2, &SPI_InitStructure);            

    SPI_Cmd(SPI2, ENABLE);

}
u8 SPI2_ReadWriteByte(u8 TxData)
{  
u8 retry=0;      
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET)
{
  retry++;
  if(retry>200)return 0;
}     
SPI_I2S_SendData(SPI2, TxData);

retry=0;
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET)
{
  retry++;
  if(retry>200)return 0;
}            
return SPI_I2S_ReceiveData(SPI2); 、         
}
void LCD_WR_DATA8(char da) //????????-8λ????
{
    SET_SDA();
SPI2_ReadWriteByte(da);
}  
void LCD_WR_DATA(int da)
{
    SET_SDA();
SPI2_ReadWriteByte(da>>8);
SPI2_ReadWriteByte(da);
}   
void LCD_WR_REG(char da)  
{
    CLR_SDA();
SPI2_ReadWriteByte(da);
}
void LCD_WR_REG_DATA(int reg,int da)
{
    LCD_WR_REG(reg);
LCD_WR_DATA(da);
}
void Address_set(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2)
{  
   LCD_WR_REG(0x2a);
   LCD_WR_DATA8(x1>>8);
   LCD_WR_DATA8(x1);
   LCD_WR_DATA8(x2>>8);
   LCD_WR_DATA8(x2);
  
   LCD_WR_REG(0x2b);
   LCD_WR_DATA8(y1>>8);
   LCD_WR_DATA8(y1);
   LCD_WR_DATA8(y2>>8);
   LCD_WR_DATA8(y2);
   LCD_WR_REG(0x2C);
}

void Lcd_Init(void)
{

    SET_CS();

CLR_RESET();
delay_ms(20);
SET_RESET();
delay_ms(20);
CLR_CS();
LCD_WR_REG(0x01);
delay_ms(1);
LCD_WR_REG(0xCF);  
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0xD9);
LCD_WR_DATA8(0X30);
  
LCD_WR_REG(0xED);  
LCD_WR_DATA8(0x64);
LCD_WR_DATA8(0x03);
LCD_WR_DATA8(0X12);
LCD_WR_DATA8(0X81);
  
LCD_WR_REG(0xE8);  
LCD_WR_DATA8(0x85);
LCD_WR_DATA8(0x10);
LCD_WR_DATA8(0x78);
  
LCD_WR_REG(0xCB);  
LCD_WR_DATA8(0x39);
LCD_WR_DATA8(0x2C);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x34);
LCD_WR_DATA8(0x02);
  
LCD_WR_REG(0xF7);  
LCD_WR_DATA8(0x20);
  
LCD_WR_REG(0xEA);  
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x00);
  
LCD_WR_REG(0xC0);    //Power control
LCD_WR_DATA8(0x21);   //VRH[5:0]
  
LCD_WR_REG(0xC1);    //Power control
LCD_WR_DATA8(0x12);   //SAP[2:0];BT[3:0]
  
LCD_WR_REG(0xC5);    //VCM control
LCD_WR_DATA8(0x32);
LCD_WR_DATA8(0x3C);
  
LCD_WR_REG(0xC7);    //VCM control2
LCD_WR_DATA8(0XC1);
  
LCD_WR_REG(0x36);    // Memory Access Control
LCD_WR_DATA8(0x08);
  
LCD_WR_REG(0x3A);   
LCD_WR_DATA8(0x55);

LCD_WR_REG(0xB1);   
LCD_WR_DATA8(0x00);   
LCD_WR_DATA8(0x18);
  
LCD_WR_REG(0xB6);    // Display Function Control
LCD_WR_DATA8(0x0A);
LCD_WR_DATA8(0xA2);

  
  
LCD_WR_REG(0xF2);    // 3Gamma Function Disable
LCD_WR_DATA8(0x00);
  
LCD_WR_REG(0x26);    //Gamma curve selected
LCD_WR_DATA8(0x01);
  
LCD_WR_REG(0xE0);    //Set Gamma
LCD_WR_DATA8(0x0F);
LCD_WR_DATA8(0x20);
LCD_WR_DATA8(0x1E);
LCD_WR_DATA8(0x09);
LCD_WR_DATA8(0x12);
LCD_WR_DATA8(0x0B);
LCD_WR_DATA8(0x50);
LCD_WR_DATA8(0XBA);
LCD_WR_DATA8(0x44);
LCD_WR_DATA8(0x09);
LCD_WR_DATA8(0x14);
LCD_WR_DATA8(0x05);
LCD_WR_DATA8(0x23);
LCD_WR_DATA8(0x21);
LCD_WR_DATA8(0x00);
  
LCD_WR_REG(0XE1);    //Set Gamma
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x19);
LCD_WR_DATA8(0x19);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x12);
LCD_WR_DATA8(0x07);
LCD_WR_DATA8(0x2D);
LCD_WR_DATA8(0x28);
LCD_WR_DATA8(0x3F);
LCD_WR_DATA8(0x02);
LCD_WR_DATA8(0x0A);
LCD_WR_DATA8(0x08);
LCD_WR_DATA8(0x25);
LCD_WR_DATA8(0x2D);
LCD_WR_DATA8(0x0F);
  
LCD_WR_REG(0x11);    //Exit Sleep
delay_ms(120);
LCD_WR_REG(0x29);    //Display on
}

void LCD_Clear(u16 Color)
{
u8 VH,VL;
u16 i,j;
VH=Color>>8;
VL=Color;
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_DATA8(VH);
    LCD_WR_DATA8(VL);
    delay_us(10);
     }
   }
}