814xappprogramv10.c

GM814X SPI 接口为从机方式

/*FOSVOS ELECTRONIC SHANGHAI     www.fosvos.com   TEL: [phone] */
/***********************************************************
 Name:		814XAppProgram.c
 Descibe: 	Function package of GM814x's operation
 Version:	       1.0
 Time:		2006.1
 Contents:	Include all operation and function of GM814x
 Copyright:	GMIC 2006
***********************************************************/
unsigned char   Flag1_T;     //814x 串口1发送FIFO空标志
unsigned char   Flag2_T;     //814x 串口2发送FIFO空标志
unsigned char   Flag3_T;     //814x 串口3发送FIFO空标志
unsigned char   Flag4_T;     //814x 串口4发送FIFO空标志
unsigned char   Revbuff1;    //串口1数据缓存
unsigned char   Revbuff2;     //串口2数据缓存
unsigned char   Revbuff3;     //串口3数据缓存
unsigned char   Revbuff4;     //串口4数据缓存

void ClrCS(void);     //置814X片选有效
void SetCS(void);      //置814X片选无效
unsigned char SPITransmit(unsigned char c);  //MCU 的SPI接口发送1 Byte 数据并接收1 Byte 数据

/***********************************************************
 Function:	Delay
 Describe:	Time delay
 Input:		int  formated time
 Output:	       void
***********************************************************/
void Delay(unsigned int nTime)
{
	while(--nTime) {;}
}  

/***********************************************************
 Function:	SendTo814X
 Describe:	send 2 byte to 814x and receive 2 byte from 814x
 Input:		2 byte to be send
 Output:	       2 byte read from 814x
***********************************************************/
unsigned int SendTo814X(unsigned char chigh,unsigned char clow)	
{
	unsigned int cTempHigh,cTempLow;
	unsigned int RevData;
	
	ClrCS();    //置814x片选有效
	Delay(5);         //延时时间参考814x数据手册的要求     
	cTempHigh=SPITransmit(chigh);      //向814X发送高位数据
	cTempLow=SPITransmit(clow);        //向814X发送低位数据
	Delay(5);		//延时时间参考814x数据手册的要求 		
	SetCS();    //置814x片选无效
	RevData=cTempHigh<<8|cTempLow;
	return RevData;      //返回从814x读出的数据
}

/***********************************************************
 Function:	Gm814XShutdown
 Describe:	Shutdown the chip
 Input:		void
 Output:	       void
***********************************************************/
void Gm814XShutdown(void)	
{
	SendTo814X(0xe0,0x00);
}

/***********************************************************
 Function:	Gm814XWakeup
 Describe:	Wakeup the chip
 Input:		void
 Output:	       void
***********************************************************/
void Gm814XWakeup(void)	
{
	SendTo814X(0xc0,0x00);
}

/***********************************************************
 Function:	Write814xConfig
 Describe:	Set the configure register of 814x 
 Input:		COM number and configure data
 Output:	       2 byte read from 814x
***********************************************************/
unsigned int Write814xConfig(unsigned char n,unsigned char high,unsigned char low)   //n 表示设置的串口号，high表示给配置寄存器的高位字节(低三位有效),low表示给配置寄存器的低位字节
{
	unsigned char ch;
	unsigned int RevData;
	
	high=high&0x07;
	ch= 0xc0 | (n<< 3);
	high=high|ch;	
	RevData=SendTo814X(high,low);   //向指定的串口功能设置寄存器写配置
	Delay(5);
	return RevData;
}

/***********************************************************
 Function:	Read814xConfig
 Describe:	read out the configure register data  
 Input:		COM number 
 Output:	       configure register data
***********************************************************/
unsigned int Read814xConfig(unsigned char n)     //n表示串口号
{
	unsigned char ch;
	unsigned int RevData;

	ch = 0x40 | (n<< 3);
	RevData=SendTo814X(ch,0x00);    
	return RevData;     //读出指定串口的功能设置寄存器内容
}

/***********************************************************
 Function:	ReadTFIFOState
 Describe:	read all transmit FIFO status
 Input:		void
 Output:	       TFIFO state data
***********************************************************/
unsigned int ReadTFIFOState(void)     
{
	unsigned int RevData;
	
	RevData=SendTo814X(0x60,0x00);  
	return RevData;     //同时读出所有发送FIFO状态
}
/***********************************************************
 Function:	SendDataToCom
 Describe:	send data to UART Com and read out the data of receive FIFO
 Input:		COM number and data to be send
 Output:	       RFIFO data
***********************************************************/
unsigned int SendDataToCom(unsigned char n,unsigned char c,bit Pt)   //n表示串口号，c为需要发送的数据，Pt为第九位数据
{
	unsigned char ch;
	unsigned int RevData;

	if(Pt)
		ch=0x81;
	else
		ch=0x80;
	ch=ch| (n<< 3);
	RevData=SendTo814X(ch,c);  
	return RevData;       //向指定串口发送数据并读出接收FIFO数据
}

/***********************************************************
 Function:	SendToAllCom
 Describe:	send data to all UART Com and read out the data of receive FIFO
 Input:		data to be send
 Output:	       RFIFO data
***********************************************************/
unsigned int SendToAllCom(unsigned char c,bit Pt)   //c为需要发送的数据,Pt为第九位数据
{
	unsigned char ch;
	unsigned int RevData;

	if(Pt)
		ch=0xa1;
	else
		ch=0xa0;
	RevData=SendTo814X(ch,c);    
	return RevData;      //向所有串口发送数据并读出接收FIFO数据
}

/***********************************************************
 Function:	ReadRFIFOData
 Describe:	read out the data of receive FIFO
 Input:		void
 Output:	       RFIFO data
***********************************************************/
unsigned int  ReadRFIFOData(void)
{
	unsigned int RevData;
	
	RevData=SendTo814X(0x00,0x00);    
	return RevData;      // 读出接收FIFO数据
}

/***********************************************************
 Function:	Managerevdata
 Describe:	Analyse the data received from 814X 
 Input:		void
 Output:	       void
***********************************************************/
void ManageRevData(unsigned int rdata)    
{
	unsigned  int cTemp;
	unsigned  char Flag_R;
	unsigned  char Flag_T;
	
	cTemp =rdata;
	if(cTemp&0x8000)     //判断R标志
		{Flag_R=1;}
	cTemp =rdata;
	if(cTemp&0x4000)     //判断T标志
		{Flag_T = 1;}

	if(Flag_R)
		{
			cTemp =rdata>>12;		
			switch(cTemp&0x03)    //判断接收数据来自哪一个子串口
				{
					case 0:
						Revbuff1=rdata&0xff;
						break;
					case 1:				
						Revbuff2=rdata&0xff;
						break;
					case 2:
						Revbuff3=rdata&0xff;
						break;
					case 3:
						Revbuff4=rdata&0xff;
						break;
					default:
						break;	
				}
			Flag_R=0;
		}
	
	if(Flag_T)
		{
			cTemp =rdata>>10;		
			switch(cTemp&0x03)   //判断哪一个子串口发送FIFO为空
				{
					case 0:
						Flag1_T=1;
						break;
					case 1:				
						Flag2_T=1;
						break;
					case 2:
						Flag3_T=1;
						break;
					case 3:
						Flag4_T=1;
						break;
					default:
						break;	
				}
			Flag_T=0;
		}
}