HS192L/USER/Apps/fm62429.c

#include "includes.h"

void FM_Init(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO, ENABLE);	
	GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable , ENABLE); //Disable jtag

	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

	GPIO_InitStructure.GPIO_Pin = FM_CLK_PIN;
	GPIO_Init(FM_CLK_PORT, &GPIO_InitStructure);
	
	GPIO_InitStructure.GPIO_Pin = FM_SDA_PIN;
	GPIO_Init(FM_SDA_PORT, &GPIO_InitStructure);
}

///////////////////////////////////////////////////////
void FM_Dly(unsigned char timeDly)
{
	unsigned short i;
	for(i=0;i<timeDly*50;i++)
	{
		__NOP();__NOP();
	}
}

void FM_Transmit(unsigned short data)
{
	
	unsigned char i;
	FM_CLK(0);
	for(i=0;i<10;i++)
	{
		FM_SDA(data & 0x01);
		FM_Dly(4);//2
		FM_CLK(1);
		FM_Dly(4);
		FM_SDA(0);
		FM_Dly(4);
		FM_CLK(0);
		data >>= 1;
	}
	FM_Dly(4);
	FM_SDA(1);
	FM_Dly(4);
	FM_CLK(1);
	FM_Dly(4);
	FM_CLK(0);
}

void VolumeSave(void)
{
	//SPIParaSave();

}

//volume: 低七位有效
void FMSetVolume(unsigned char volume,char needSave)
{
	unsigned char volTable[]={0,12,14,15,16,17,18,19,20,21};//10
	unsigned char ExvolTable[]={0,5,6,7,8,9,10,12,14,15,16};//4
	static unsigned char lastVolume=0xff;
  unsigned short transmitData,temp;
	unsigned char *p[10]={0};
	char buf[30];
	char i;
	
	sprintf(buf,"Vol:%d", volume);
	if(volume == VOLUME_MAX) strcat(buf, " Max");
	else if(volume == VOLUME_MIN) strcat(buf, " Min");
	//strcat(buf, "\r\n");
	SlwTrace(INF, buf,1);
	//if(lastVolume == volume) return;	
	if(Headsetsta) {
		for(i=0;i<sizeof(volTable);i++)p[i]=&ExvolTable[i];	//有耳机
	}else{
		for(i=0;i<sizeof(volTable);i++)p[i]=&volTable[i];	  //未插耳机
	}
#if 1
	
	//0b---0xxc cttt ttkn
	//xx都固定为1
	//cc为通道2增益，这里随便
	//ttttt为通道1增益
	//k控制多少个通道 这里控制1个，即为1
	//n为通道选择 这里只选择通道1 即为0   
	
	//printf("*(p[volume-1]==%d\r\n",*(p[volume]));
	transmitData=0x780;//0111 1000 0010  //2     0110 0000 0010
	//temp=volTable[volume-1]<<2;
	temp=(*(p[volume]))<<2;
	temp &= 0x7C;//0111 1100;//只取低5bits
	transmitData |= temp;
	FM_Transmit(transmitData);
#else
	volume *= 2;
	transmitData =0;
	transmitData |= (1<<9) | (1<<10);//bit 9=1,bit10=1
	temp = volume & 0x7E;
	temp <<= 2;
	transmitData |= temp;
	transmitData |= (1>>7)|(1>>8);
	FM_Transmit(transmitData);
#endif  
	lastVolume = volume;
	if(needSave) VolumeSave();
}


void FMVolumeChange(VOLUME_DEF add_dicrease,char needSave)
{
	
//	switch(add_dicrease)
//	{
//		case VOLUME_NORMAL:
//			sutSpiPara.volume = VOLUEM_DEFAULT;
//			break;
//		case VOLUME_RESTORE:
//			sutSpiPara.volume=sutSpiPara.volume;
//			break;
//		case VOLUME_ADD:
//			if(sutSpiPara.volume < VOLUME_MAX)
//			  sutSpiPara.volume++;
//			break;
//		case VOLUME_DECREASE:
//			if(sutSpiPara.volume > VOLUME_MIN)
//			  sutSpiPara.volume--;
//			break;
//	}
//	FMSetVolume(sutSpiPara.volume,needSave);
	
}

//void SaveCurrentVolume(void)
//{
//	FMSetVolume(sutSpiPara.volume, 1);
//}