C++ (Cpp) LCD_DATA_IN Examples

Example #1

File: ST7920.c Project: haoozi/SIM900A-py

//*******************************************
//*函数名称:void LCD_CheckBusy(void)	*
//*函数功能:并行方式查忙					*
//*形式参数:无								*
//*形参说明:无								*
//*返回参数:无								*
//*使用说明:无								*
//*******************************************
void LCD_CheckBusy(void)
{
#if PARALLEL == 1
	unsigned char temp;
	LCD_DATA_IN();	//P1 = 0xff;	//输入前置1
	LCD_RS_LOW();	//RS = 0;		//指令
	LCD_RW_HIGH();	//RW = 1;		//读模式
	_delay_us(5);	//延时
	LCD_E_HIGH();	//E  = 1;	 //使能
	do
	{	
		temp = LCD_DATA_GET();	//temp = BUSY;
	}
  	while( 0x80==(temp&0x80) );	//等待不忙,temp=0x00时不忙
	
	LCD_E_LOW();	//E  = 0;
	//_delay_ms(20);
#else
	unsigned char temp = 0xFC,temp2;
	do
	{
		LCD_SendByte(temp);
		temp = LCD_ReceiveByte();
		temp2 = LCD_ReceiveByte();
		temp &= 0x80;
	}while( temp==0x80 );
#endif	//#if PARALLEL == 1
}

Example #2

File: GPIO_LCD1602.c Project: pedrominatel/embedded

/***************************************************************************//**
 * @brief  Read status of LCD controller
 * @return status : Status of LCD controller
 ******************************************************************************/
static unsigned char Lcd_Read_Status (void)
{
    unsigned char status;

    LCD_DATA_DIR_IN();
    GPIO_WriteBit(GPIOA, RS, Bit_RESET);
    GPIO_WriteBit(GPIOA, RW, Bit_SET);
    Delay(10000);
    GPIO_WriteBit(GPIOA, EN, Bit_SET);
    Delay(10000);
    status  = LCD_DATA_IN() << 4;
    GPIO_WriteBit(GPIOA, EN, Bit_RESET);
    Delay(10000);
    GPIO_WriteBit(GPIOA, EN, Bit_SET);
    Delay(10000);
    status |= LCD_DATA_IN();
    GPIO_WriteBit(GPIOA, EN, Bit_RESET);
    LCD_DATA_DIR_OUT();
    return (status);
}

Example #3

File: ST7920.c Project: haoozi/SIM900A-py

//********************************************
//*函数名称:LCD_ReadData		 *
//*函数功能:并行读LCD数据					 *
//*形式参数:无								 *
//*形参说明:无								 *
//*返回参数:读回的数据						 *
//*使用说明:无								 *
//********************************************
unsigned char LCD_ReadData(void)
{
#if PARALLEL == 1
 	unsigned char uc_Content;
	LCD_CheckBusy();
	//_delay_us(2);

	LCD_DATA_IN();	//P1 = 0xff;//输入前置1
    LCD_RS_HIGH();	//RS = 1;   //数据
    LCD_RW_HIGH();	//RW = 1;	//读模式

  	LCD_E_HIGH();	//E = 1;	//使能
	_delay_us(1);	//延时很重要 
  	uc_Content = LCD_DATA_GET();	//uc_Content = P1;    //P1口的内容放到变量中
  	LCD_E_LOW();	//E = 0;

	_delay_us(1);	//延时很重要 

	return uc_Content;
#endif	//#if PARALLEL == 1
}

Example #4

File: stm32f10x_LCD240x64.c Project: melitvinov/Climat510_AHU

uint8_t  ReadStatus (char Need){
uint8_t res, TimeOut;
res=0;
TimeOut=0;
while (1) {

//	CLREA;
	LCD_DATA_DIR_IN();
	SetCMD;
	ClrRD;				//Разрешение дисплея
	ClrCE;
	res=LCD_DATA_IN();		//Прием статуса из дисплея
	SetRD;
	SetCE;
	LCD_DATA_DIR_OUT();
//    SETEA;

	if ((res & Need) ==Need) return 1;
	TimeOut++;
	if (TimeOut > MaxTimeOut) {/*not=100;ton=6;*/
		return 0;
	}
	}
}