fasheng.c

基于c8051f330的ISD4002录放音程序。程序很小

                                     //09.12  04:09:05
#include <C8051F120.h>                 // SFR declarations
#include <intrins.h>

//#define SYSCLK             24500000    // Internal oscillator frequency in Hz

#define uchar unsigned char
#define uint  unsigned int


sbit SS   =     P1^1;              //片选          推挽
sbit SCK  =     P1^0;              //ISD4002时钟   推挽
sbit MOSI =     P1^2;              //数据输入      推挽                                  
sbit ISD_INT=   P0^5;           

uchar t;


void Watchdog_Init (void)        //关闭看门狗
{
   unsigned char SFRPAGE_save = SFRPAGE; // Save the current SFRPAGE

   SFRPAGE = CONFIG_PAGE;              // Switch to the necessary SFRPAGE

   WDTCN     = 0xDE;                   // Disable the Watchdog Timer
   WDTCN     = 0xAD;

   SFRPAGE = SFRPAGE_save;             // Restore the SFRPAGE
}

                                      
void Oscillator_Init (void)      //时钟初始化
{
   unsigned char SFRPAGE_save = SFRPAGE; // Save the current SFRPAGE

   SFRPAGE = CONFIG_PAGE;              // Switch to the necessary SFRPAGE

   OSCICN = 0x83;                      // Set the internal oscillator to
                                         // 24.5 MHz
   SFRPAGE = SFRPAGE_save;             // Restore the SFRPAGE
}


void PORT_Init (void)            //端口初始化
{
   unsigned char SFRPAGE_save = SFRPAGE; // Save the current SFRPAGE

   SFRPAGE = CONFIG_PAGE;              // Switch to the necessary SFRPAGE

   P0MDOUT = 0x00;  
                   
   P1MDOUT = 0x07;  
   XBR0 = 0x00;                        // Enable the SPI on the XBAR
  // XBR1 = 0x04;                        // INT0->P0.0
   XBR2 = 0x40;                        // Enable the XBAR and weak pull-ups

   SFRPAGE = SFRPAGE_save;             // Restore the SFRPAGE
}


void Init_Device (void)            
{
   Watchdog_Init ();
   Oscillator_Init ();
   PORT_Init ();

}

void delay()
{
 uchar i;
 for(i=0;i<5;i++);
}

void delay_25ms()       //24.5M系统时钟下
{
 uchar i,j;
 for(i=0;i<255;i++)
  for(j=0;j<255;j++);
 }


void SPI_Send(unsigned char dat)     //发送一个字节
{
   unsigned char i;   
                
 //  SS=0;                     //SS=0,打开spi通信端
   SCK=0;
   for(i=0;i<8;i++)          //先发低位再发高位，依次发送(不能搞乱)    
    { 
      dat=dat>>1;     
	  MOSI=CY;               //输出1位
	  delay();             //应该稍微延时一下,不过试了一下,不延时也可以
      SCK=1;
      delay();
      SCK=0;
      delay();
    }
}

void ISD_UpPwr(void)        //上电指令
{  
 delay();
 SS=0;
 SPI_Send(0x00);
 SPI_Send(0x20);
 SS=1;
}

void ISD_DnPwr(void)        //掉电指令
{  
 delay();
 SS=0;
 SPI_Send(0x00);
 SPI_Send(0x30);
 SS=1;
}

void ISD_Stop(void)         //停止指令
{  
 delay();
 SS=0;
 SPI_Send(0x00);
 SPI_Send(0x10);
 SS=1;
}

                      
void ISD_SetPlay(uchar addr)         //设置放音地址
{
 delay();
 SS=0;
 SPI_Send(addr);          //地址
 SPI_Send(0xE0);
 SS=1; 

 }
 
void ISD_Play()            //从当前地址开始放音
{
 delay();
 SS=0;
 SPI_Send(0x00);
 SPI_Send(0xF0);
 SS=1; 

}

void FaYin()             //发音
{
 ISD_UpPwr();            //上电

 delay_25ms();           //等待上电延时

delay_25ms(); 

ISD_SetPlay(0x10);         //发地址为10的SetPlay命令
ISD_Play();             //发Play命令,开始发音
while(ISD_INT);        //这个是用来检测放音情况,放完一段,该引脚变低电平
/*   t=0;

delay_25ms(); 


ISD_SetPlay(0x60);          //发地址为60的SetPlay命令
ISD_Play();             //发Play命令,开始发音
while(ISD_INT);        //这个是用来检测放音情况,放完一段,该引脚变低电平
  t=0;
*/
  ISD_Stop();  
}

void main (void)
{

 Init_Device();
 
 FaYin();

 while(1)
 {

 };

}