www.pudn.com > Sunplusvoice.rar > main.c

//*********************************************************// 
//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		  
	}			  
}