lcd_drv.c

用at91sam7s64+ucos写的mp3播放程序

#include "AT91SAM7S64.h"
#include "Board.h"
#include "type.h"
#include "spi.h"
#include "port.h"
#include "lcd_drv.h"

/*

#define  LCD_CMD_ADD      0xbe   //b10111110
#define  LCD_DATA_ADD     0xbf   //b10111111


///////////////////////////////////////////////////////////
void vLcdSendCmd(INT8U data)
{
   port_SetAddress(LCD_CMD_ADD);
   LCDWR_LOW();
   *AT91C_PIOA_ODSR = (INT32U)data;
   LCDEN_HIGH();
   port_Delay(5);
   LCDEN_LOW();
}


///////////////////////////////////////////////////////////
void vLcdSendData(INT8U data)
{
   port_SetAddress(LCD_DATA_ADD);
   LCDWR_LOW();
   *AT91C_PIOA_ODSR = (INT32U)data;
   LCDEN_HIGH();
   port_Delay(5);
   LCDEN_LOW();
}



//////////////////////////////////////////////////////////
INT8U u8LcdReadData(void)
{
   INT32U temp32;
   INT8U  temp8;
   
   port_SetAddress(LCD_CMD_ADD);    //set address first
   LCDWR_HIGH();                    //set read mode
   
   *AT91C_PIOA_ODR |= (PORT_8BIT);  //output disable
   LCDEN_HIGH();                    //en high
   port_Delay(5);
   temp32 = *AT91C_PIOA_PDSR;       //read data
   LCDEN_LOW();                     //en low

   *AT91C_PIOA_OER |= (PORT_8BIT);  //output active
   
   temp8 = (INT8U)temp32;
   return temp8;  
}


//////////////////////////////////////////////////////////
void vBusyWait(void)
{
   INT8U busy;
   
   do
   {
     busy = u8LcdReadData();
   }
   while(busy & 0x80);
}

//////////////////////////////////////////////////////////
void vLcdInit(void)
{
   vLcdSendCmd(0x30);
   vLcdSendCmd(0x04);
   vBusyWait();
   vLcdSendCmd(0x0c);
   vBusyWait();
   vLcdSendCmd(0x01);
   vBusyWait();
   vLcdSendCmd(0x02);
}

//////////////////////////////////////////////////////////
void vPrintString(INT8U x, INT8U y, INT8U u8Length, char *string)
{
   INT8U i;
   
   if(0 == y)
   {
      vBusyWait();
      vLcdSendCmd(0x80 + x);
   }
   else
   {
      vBusyWait();
      vLcdSendCmd(0x90 + x); 
   }
   
   for(i=0; i<u8Length; i++)
   {
      vBusyWait();
      vLcdSendData(*string ++);
   }
}

*/