/************************************************************/
/*		 3310 Code for   AT91SAM7S64						*/
/*				By   pasyong								*/
/*				www.okarm.com								*/
/*				Base IAR 4.30A							*/
/************************************************************/
#include "ioat91sam7s64.h"
#include "english_6x8_pixel.h "
#define LCD_DC      ((unsigned int) 1 << 28)
#define LCD_CE       ((unsigned int) 1 << 29)
#define LCD_RST      ((unsigned int) 1 << 30)
/*-----------------------------------------------------------------------
PORT_INIT函數
-----------------------------------------------------------------------*/
void PORT_init()
{
  *AT91C_PIOA_PER|=(LCD_DC|LCD_CE|LCD_RST);
  *AT91C_PIOA_OER|=(LCD_DC|LCD_CE|LCD_RST);
}
void SPI_init()
{

  *AT91C_PMC_PCER=1<<AT91C_ID_SPI ;
  //PIO外設功能時鐘始能
  *AT91C_PIOA_PDR|=(AT91C_PA12_MISO|AT91C_PA13_MOSI|AT91C_PA14_SPCK);
   //PIO使能引腳的外設功能
  *AT91C_PIOA_ASR|=(AT91C_PA12_MISO|AT91C_PA13_MOSI|AT91C_PA14_SPCK);
  //外設A分配給SPI外設A功能;
  *AT91C_SPI_CR|=AT91C_SPI_SPIEN ;
  //允許SPI口
  *AT91C_SPI_MR|=(AT91C_SPI_MSTR|AT91C_SPI_PS_FIXED|AT91C_SPI_MODFDIS|AT91C_SPI_DLYBCS);
  //主機模式,不分頻,固定片選0,禁止錯誤檢測
  *AT91C_SPI_CSR=AT91C_SPI_NCPHA|AT91C_SPI_BITS_8|((unsigned int) 0xFF <<  8);
  //8位數據，傳輸完成后片選保持，48M/12分頻，傳輸前延時255，連續傳輸延時255 AT91C_SPI_SCBR

}

/*-----------------------------------------------------------------------
3310調用函數
-----------------------------------------------------------------------*/
/*-----------------------------------------------------------------------
LCD_write_byte    : 使用SPI接口寫數據到LCD

輸入參數：data    ：寫入的數據；
          command ：寫數據/命令選擇；

-----------------------------------------------------------------------*/
void LCD_write_byte(unsigned char  data, unsigned char command)
  {
   *AT91C_PIOA_CODR|=LCD_CE ;		            // 使能LCD

    if (command == 0)
      {
	*AT91C_PIOA_CODR|= LCD_DC ;                 // 傳送命令
	  }
    else
      {
	*AT91C_PIOA_SODR|= LCD_DC ;		    // 傳送數據
	  }

    *AT91C_SPI_TDR = data;	                    // 傳送數據到SPI寄存器

    while((*AT91C_SPI_SR&AT91C_SPI_TXEMPTY)==0) {;} // 等待數據傳送完畢
	
   *AT91C_PIOA_SODR|= LCD_CE ;		            // 關閉LCD
  }
/*-----------------------------------------------------------------------
LCD_set_XY        : 設置LCD坐標函數

輸入參數：X       ：0－83
          Y       ：0－5

-----------------------------------------------------------------------*/
void LCD_set_XY(unsigned char  X,unsigned char  Y)
  {
    LCD_write_byte(0x40 | Y, 0);		// column
    LCD_write_byte(0x80 | X, 0);          	// row
  }
/*-----------------------------------------------------------------------
LCD_write_char    : 顯示英文字符

輸入參數：c       ：顯示的字符；
-----------------------------------------------------------------------*/
void LCD_write_char(unsigned char  c)
  {
    unsigned char line;

    c -= 32;

    for (line=0; line<6; line++)
      LCD_write_byte(font6x8[c][line], 1);
  }
/*-----------------------------------------------------------------------
LCD_write_english_String  : 英文字符串顯示函數

輸入參數：*s      ：英文字符串指針；
          X、Y    : 顯示字符串的位置,x 0-83 ,y 0-5	
-----------------------------------------------------------------------*/
void LCD_write_english_string(unsigned char  X,unsigned char  Y,unsigned char  *s)
  {
    LCD_set_XY(X,Y);
    while (*s)
      {
	 LCD_write_char(*s);
	 s++;
      }
  }

/*-----------------------------------------------------------------------
LCD_clear         : LCD清屏函數
-----------------------------------------------------------------------*/
void LCD_clear(void)
  {
    unsigned int i;

    LCD_write_byte(0x0c, 0);	        //普通顯示模式		
    LCD_write_byte(0x80, 0);            //設置RAM的X地址	

    for (i=0; i<504; i++)
      LCD_write_byte(0, 1);		//寫0數據	
  }
/*-----------------------------------------------------------------------
LCD_init          : 3310LCD初始化
-----------------------------------------------------------------------*/
void LCD_init(void)
  {
    *AT91C_PIOA_CODR|=LCD_RST;          // 產生一個讓LCD復位的低電平脈沖
    *AT91C_PIOA_SODR|=LCD_RST;
    *AT91C_PIOA_SODR|=~LCD_CE ;		// 關閉LCD
    *AT91C_PIOA_CODR|=LCD_CE;		// 使能LCD

    LCD_write_byte(0x21, 0);     	// 使用擴展命令設置LCD模式
    LCD_write_byte(0xc8, 0);	        // 設置偏置電壓
    LCD_write_byte(0x06, 0);     	// 溫度校正
    LCD_write_byte(0x13, 0);     	// 1:48

    *AT91C_PIOA_SODR|=LCD_CE ;		// 關閉LCD
    *AT91C_PIOA_CODR|=LCD_CE;		// 使能LCD

    LCD_write_byte(0x20, 0);	        // 使用基本命令
    LCD_clear();	                // 清屏
    LCD_write_byte(0x0c, 0);	        // 設定顯示模式，正常顯示

    *AT91C_PIOA_SODR|=LCD_CE ;          // 關閉LCD
  }


int main(void)
{
    PORT_init();
    SPI_init();
    LCD_init();
    LCD_write_english_string(0,0,"WWW.MCUZONE.COM");
    LCD_write_english_string(0,2,"WELCOM YOU");
    LCD_write_english_string(0,4,"PASGUONENG");	
    while(1)
     {
	;
     }
}