radio2.c

lc72130.收音机软件 #include "saa6588.c" #include "ba1924.c"

#include "radio2.h"
static eRaStatus raStatus = RA_IDEL;
static RADIO radioInfo;
static IN1 in1;
static IN2 in2;
static BYTE ifcTimeout = 0;
static BYTE pllDataBuff[3];//保存返回的值
static UINT afTimeout = 0;
static UINT taTimeout = 0;
void radio_background(void)
{
	switch(raStatus) 
	{
		case RA_IDEL:
			break;
		case RA_SEEK_STOP:
			in2.STRQ = RECV;
			break;
		case RA_SEEK_FWD:			//向后搜索
			radioInfo.dir = FWD;
			raStatus = RA_CHK_BAND;
			break;
		case RA_SEEK_REV:			//向前搜索
			radioInfo.dir = REV;
			raStatus = RA_CHK_BAND;
			break;
		case RA_CHK_BAND:			//波段判断
			if(radioInfo.band==FM)
			{
				if(radioInfo.loc==ON)
					in2.LOC = OPEN;
				else
					in2.LOC = LOW;
			}
			raStatus = RA_NEXT_FREQ;
			break;
		case RA_NEXT_FREQ:			//切换频率
			if(radioInfo.dir==FWD)
				radioInfo.freq += radioInfo.step;
			else
				radioInfo.freq -= radioInfo.step;
			radioCheckFreq(&radioInfo);
			radioSetFreq(&radioInfo);
			radioResetCTE();
			in2.STRQ = SEEK;
			ifcTimeout = 0;
			raStatus = RA_CHK_IFC;	//等待 DI拉低进入中频读取状态
			break;
		case RA_CHK_IFC:
			if(IFC_GETTING)
			{
				ifcTimeout++;
			}else{
				raStatus = RA_END_UC; // DI 拉低，进入中频读取状态
				break;
			}
			if(ifcTimeout<IFC_TIMEOUT)
			{
				ifcTimeout++;
			}else{
				raStatus = RA_NEXT_FREQ;	//超时继续下一个频率
				break;
			}
			break;
		case RA_END_UC:
			spiReceiveByte(LC72130_OUT,pllDataBuff,4);//读取中频值
			if(radioIfLocked(pllDataBuff))//判断中频是否锁定
			{
				if(radioInfo.smeter==ON)	//检查SMETER
				{
					if()
					{
						raStatus = RA_PLL_LOCKED;
						break;
					}
				}else{
					raStatus = RA_PLL_LOCKED;//已锁定
					break;
				}
			}
			raStatus = RA_PLL_UNLOCK;	//中频未锁定
			break;
		case RA_PLL_UNLOCK:
			if(radioInfo.mode == MANUAL)
			{
				raStatus = RA_SEEK_STOP;
			}else{
				raStatus = RA_NEXT_FREQ;
			}
			break;
		case RA_PLL_LOCKED:
			
			break;
		case RA_TOUT_AF:
			if(rds_af_exist())
			{
				raStatus = RA_PLL_LOCKED;
			}else{

			}
			break;
		default:
			break;
	}
}
void radio_timer(void)
{
	if(afTimeout)
	{
		afTimeout--;
	}else{
		raStatus = RA_TOUT_AF;
		return;
	}
	if(taTimeout)
	{
		taTimeout--;
	}else{
		raStatus = RA_TOUT_TA;
	}
}