STM32f103驱动T6963芯片的LCD屏幕问题

tracymars 提问时间：2017-4-14 12:12 /

在操作屏幕的时候，在每次写command或者Data时候，都要去check状态，发现在调用自动写命令的时候，第一次状态的对的，后面的状态就错了，不知道什么原因，求指导
void LCD_IO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStruct;

GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStruct.GPIO_Pin = LCD_WR|LCD_RD|LCD_CE|LCD_RST|LCD_CD|LCD_HALT;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOD, &GPIO_InitStruct);
   //data bus
/* Configure PD.0, ~PD7 */
GPIO_InitStruct.GPIO_Pin = 0x00ff;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOD, &GPIO_InitStruct);

GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStruct.GPIO_Pin = LCD_BG;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOE, &GPIO_InitStruct);
SET_LCD_HALT;
   SET_LCD_RST;
delay_ms(200);

CLR_LCD_RST;
delay_ms(200);
SET_LCD_RST;

}

/*
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*/
void LCD_Data_Pin_Change(unsigned char u8dir)
{
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.GPIO_Pin = 0x00ff;
if(u8dir)
{
   GPIO_InitStruct.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
}
else
{
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN_FLOATING;
}
GPIO_Init(GPIOD, &GPIO_InitStruct);
}

/*ÅÐ¶ÏSTA0 and STA1 µÄ£¨Ö¸ÁîºÍÊý¾Ý¶ÁÐ´×´Ì¬£©*/
void CheckRWStatus(void)
{
unsigned int  u16data;
LCD_Data_Pin_Change(0);
do{
CLR_LCD_CE;
SET_LCD_CD;
SET_LCD_WR;
CLR_LCD_RD;
u16data = GPIO_ReadInputData(GPIOD);
// USART_SendData(USART1,0X11);
// USART_SendData(USART1,(u8)u16data);  //debug
SET_LCD_RD;
SET_LCD_CE;
}while((u16data&0x0003) != 0x0003);
   LCD_Data_Pin_Change(1);
}

/*ÅÐ¶ÏSTA3£¬×Ô¶¯Ð´µÄ×´Ì¬
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*/
void CheckAutoWriteStatus(void)
{
unsigned int  u16data;
LCD_Data_Pin_Change(0); //set bus pin input sataus
do{
CLR_LCD_CE;
SET_LCD_CD;
SET_LCD_WR;
CLR_LCD_RD;
u16data = GPIO_ReadInputData(GPIOD);
USART_SendData(USART1,0X22);
USART_SendData(USART1,(u8)u16data); //debug
SET_LCD_RD;
SET_LCD_CE;
}while((u16data&0x0008) != 0x0008);
LCD_Data_Pin_Change(1);    //set bus pin output sataus

}

void LCD_Write_Com(unsigned char u8cmd)
{
uint16_t u16data;
u16data = GPIOD->ODR;
u16data &=0xFF00;
u16data  |= u8cmd;
SET_LCD_CD;
CLR_LCD_CE;
SET_LCD_RD;
CLR_LCD_WR;
GPIOD->ODR  = u16data;
SET_LCD_WR;
SET_LCD_CE;

}

void LCD_Write_Data(unsigned char u8dat)
{
uint16_t u16data;

u16data = GPIOD->ODR;
u16data &=0xFF00;
u16data  |= u8dat;

CLR_LCD_CD;
CLR_LCD_CE;
SET_LCD_RD;
CLR_LCD_WR;
GPIOD->ODR  = u16data;
SET_LCD_WR;
SET_LCD_CE;
}

//ÎÞ²ÎÊýÖ¸ÁîÐ´Èë
void LCD_WriteCommand(unsigned char u8cmd)
{
CheckRWStatus();
LCD_Write_Com(u8cmd);
}

//µ¥²ÎÊýÐ´Èë
void LCD_WriteCommand1(unsigned char u8cmd, unsigned char u8data)
{
CheckRWStatus();
LCD_Write_Data(u8data);

CheckRWStatus();
LCD_Write_Com(u8cmd);
}

//Ë«²ÎÊýÐ´Èë
void LCD_WriteCommand2(unsigned char u8cmd, unsigned char u8data1,unsigned char u8data2)
{
CheckRWStatus();
LCD_Write_Data(u8data1);

CheckRWStatus();
LCD_Write_Data(u8data2);

CheckRWStatus();
LCD_Write_Com(u8cmd);
}

void LCD_full_clr(unsigned char u8dat)
{
unsigned int i;
LCD_WriteCommand2(LCD_ADR_POS, 0x00, 0x00);
LCD_WriteCommand(LCD_AUT_WR);    //×Ô¶¯Ð´
for(i=0;i<128*20;i++)
{
CheckAutoWriteStatus();
LCD_Write_Data(u8dat);       //
}
LCD_WriteCommand(LCD_AUT_OVR);    // ×Ô¶¯Ð´½áÊø
}

调用这个函数CheckAutoWriteStatus()的时候，发现就第一次的状态位是对的，后面全错了