//*********************************************************//
//名称:"复读机"
//描述:结合"61板"的三个按键完成简易完成录音、停止和播放功能:
// 1、KEY1--录音
// 2、KEY2--停止
// 3、KEY3--播放
// 最长录20秒
//日期:2003/5/16
//*********************************************************//
#include "hardware.h"
#include "dvr.h"
#define C_flashSize 0xf000
#define sector 0xa000 //定义FLASH写的起始地址
#define Stop 0
#define Record 1
#define Play 2
#define Full 1
#define Empty 2
#define DAC1 1
#define DAC2 2
#define RceMonitorOff 0
#define RceMonitorOn 1
#define Manual 0
#define Auto 1
unsigned int Status;
unsigned int Ret;
unsigned int Key;
unsigned int Addr, Save_Addr;
//*********************************************************//
//函数:main()
//描述:主函数
//*********************************************************//
int main()
{
System_Initial();
SACM_DVR_Initial(Manual);
Status = Stop;
while(1)
{
Key = SP_GetCh(); //获取键值
switch(Key)
{
case 0x0001: //KEY1
//**********************录音(record)***********************//
//*********************************************************//
for(Addr=sector;Addr<0xf000;Addr+=256)
{
Clear_WatchDog();
F_FlashErase(Addr);
}
Status = Record;
Addr=sector;
// DVR初始化
SACM_DVR_InitQueue();
SACM_DVR_InitEncoder(RceMonitorOn);
break;
case 0x0002: // KEY2
//**********************停止(stop)*************************//
//*********************************************************//
switch(Status)
{
case Record: // 仍在录音
SACM_DVR_Stop();
while(SACM_DVR_TestQueue() != Empty )
{
Ret = SACM_DVR_FetchQueue();// 从队列中取数
F_FlashWrite1Word(Addr,Ret);
Addr += 1;
}
break;
case Play:
SACM_DVR_Stop();
break;
default:
break;
}
Status = Stop;
break;
case 0x0004: //KEY3
//************************回放(playback)*******************//
//*********************************************************//
SACM_DVR_Stop();
if(Status == Record)
{
while(SACM_DVR_TestQueue() != Empty)
{
Ret = SACM_DVR_FetchQueue();// Put remain dat to Queue
F_FlashWrite1Word(Addr,Ret);// save to User Storage
Addr+= 1;
}
}
// Save_Addr=Addr;
Status = Play;
Addr = sector; //播放的首地址
SACM_DVR_InitQueue();
while(SACM_DVR_TestQueue() != Full) //如果队列不满则继续填
{
Ret=F_FlashRead(Addr); //从flash中读出数据
SACM_DVR_FillQueue(Ret); //填队列
Addr+= 1;
}
SACM_DVR_InitDecoder(DAC1+DAC2);
break;
default:
break;
}
//************************状态判断处理*********************//
//*********************************************************//
switch(Status)
{
case Record:
//**********************停止(stop)*************************//
//*********************************************************//
if(Addr< C_flashSize)
{
SACM_DVR_Encode(); // 取数据并编码
if(SACM_DVR_TestQueue() != Empty) //如果队列没空则将数据保存
{
Ret = SACM_DVR_FetchQueue();//从队列中取数
F_FlashWrite1Word(Addr,Ret);//将数据写入flash
Addr+= 1;
}
}
else
{
SACM_DVR_Stop();
while(SACM_DVR_TestQueue() != Empty )
{
Ret = SACM_DVR_FetchQueue();
F_FlashWrite1Word(Addr,Ret);
Addr+= 1;
}
Status = Stop;
}
break;
case Play:
//************************回放(playback)*******************//
//*********************************************************//
if(SACM_DVR_Status()&0x01) //是否正在播放
{
if(SACM_DVR_TestQueue() != Full)
{
Ret=F_FlashRead(Addr); //读出flash中的数据
SACM_DVR_FillQueue(Ret); // 填队列
Addr += 1;
}
}
else
{
SACM_DVR_Stop();
Status = Stop;
// SP_RampDnDAC1();
// SP_RampDnDAC2();
}
SACM_DVR_Decode(); //解码
break;
case Stop:
break;
default:
break;
}
System_ServiceLoop(); //键盘扫描
}
}