ad4360.c

89C516RD+的两个AD转换程序,89C51是22.1184MHZ,有64KB Flash 256B(DataRAM)+1024B(Ext.RAM)的性价比很高的MCU

void code_transmit(unsigned char code * pRomData, unsigned short len)
 {
  ControlData.wCount = 0 ;
  if(ControlData.wLength > len)
	 ControlData.wLength = len ;
  ControlData.pData = pRomData ;
  if( ControlData.wLength >= EP0_PACKET_SIZE) 	// 如果发送代码大于包长度
  {
   D12_WriteEndpoint(1, EP0_PACKET_SIZE, ControlData.pData) ;
   ControlData.wCount += EP0_PACKET_SIZE ;
   DISABLE ;
 		bEPPflags_control_state = USB_TRANSMIT ;
   ENABLE ;
 	}
  else                                 						 // 发送代码小于包长度
	 {
 		D12_WriteEndpoint(1, ControlData.wLength, pRomData);
	  ControlData.wCount += ControlData.wLength;
	  DISABLE;
	  bEPPflags_control_state = USB_IDLE;
	 	ENABLE;
	 }
 }
// 设置DMA
void setup_dma()
 {
	 ioSize = ioRequest.uSize;
	 ioCount = 0;
		DISABLE;
	 bEPPflags_dma_state = DMA_RUNNING;
	 ENABLE;
 	single_transmit(0, 0);
 	if(ioRequest.bCommand & 0x1)
	 {
	  if(ioSize > 64 || ioSize == 0)
	  {
	  	D12_WriteEndpoint(5, 64, EpBuf);
 	  ioCount += 64;
	  }
	  else
	  {
		 	D12_WriteEndpoint(5, ioSize, EpBuf);
 	  ioCount += ioSize;
		 }
		}
 }
// 处理标准USB设备请求和厂商请求
void control_handler()
 {
	 unsigned char type, req;
 	type = ControlData.DeviceRequest.bmRequestType & USB_REQUEST_TYPE_MASK;	//0x60
	 req = ControlData.DeviceRequest.bRequest & USB_REQUEST_MASK;		          //0x0F
	//help_devreq(type, req); // print out device request
 	if (type == USB_STANDARD_REQUEST) (*StandardDeviceRequest[req])();
	 else if (type == USB_VENDOR_REQUEST) (*VendorDeviceRequest[req])();
      	else	stall_ep0();
 }
void main ( )
{
	unsigned char i , j ;

	P1_2 = False ;
 P1_3 = False ;
 P3_3 = False ;

//	OutFreq ( 0x00 ) ;

	RecivedHead = False ;
 coma_count_rxd = coma_count_txd = coma_max_count_txd = 0x00 ;
 RxdHead = RxdEnd = 0x00 ;
	//DISABLE;
	init_port();
	P1_2 = False ;
 P1_3 = False ;
 P3_3 = False ;
	init_serial();
	init_timer0(); 
	MainRxDone = False ;
	MainTxDone = False ;
	MainRxFlag = False ;
	EA = False ;
 AUXR_89C516 = 0x01 ;   // Use Internal SRAM 1KB,禁止ALE输出

	//for test
	IE0=0;
	IT0=0;		             // 必须设置成电平触发中断
	EX0=1;
//--------------------
//	MCU_D12RST = 0;
//	MCU_D12RST = 1;
//--------------------
/* Test WatchDog
RunLed = 0 ;
WDT_CONTR = 0x36 ; // 2.3 s

while ( 1 ) 
{
 WDT_CONTR |= 0x10 ;
}	
*/
MCU_D12CS = True ;
	bNoRAM = TRUE;
	//--------------------------
 MCU_D12CS = False;
	i=D12_ReadInterruptRegister();
	i=0;
//i=D12_ReadEndpointStatus(0);
	i=D12_ReadLastTransactionStatus(0);
	i=D12_ReadLastTransactionStatus(1);
	i=D12_ReadLastTransactionStatus(2);
	i=D12_ReadLastTransactionStatus(3);
	i=D12_ReadLastTransactionStatus(4);
	i=D12_ReadLastTransactionStatus(5);
	ENABLE;
	reconnect_USB();
	ENABLE;
// 在此其间，为了不影响主机枚举所以还要执行一部分程序
// 如果只延时，那么可能使主机枚举USB的过程延长
	TimerForICcard = 0x00 ;
	while ( TimerForICcard < 200 ) // delay 0.5 s
 {
  if (bEPPflags_bus_reset)   // USB总线复位
  {
 	 DISABLE;
   bEPPflags_bus_reset = False ;
   ENABLE;
// Release D12's SUSPEND pin after bus reset
// Enable 74HCT123 pulse generation before disconnect
// D12SUSPD = 1;
			D12SUSPD=0;
  }
	 if (bEPPflags_suspend)				// USB总线状态改变
  {
   DISABLE;
  	bEPPflags_suspend= 0;
   ENABLE;
			if(D12SUSPD == 1)											// USB总线挂起
	  {
    D12SUSPD = 0;
    P0 = 0xFF;
				P1 = 0x00;
    P2 = 0xFF;
    P3 = 0xF7;
    D12_SetDMA(0xC3);
    D12SUSPD = 1;
    PCON |= 0x02;
    while (1) ;                // loop forever
			}
		}
		if (bEPPflags_setup_packet)// 建立包
  {
		 DISABLE;
		 bEPPflags_setup_packet = 0;
		 ENABLE;
		 control_handler();
		 //D12SUSPD = 1;
		 D12SUSPD=0;
		}
		if(bEPPflags_setup_dma != 0)// 建立DMA
		{
		 DISABLE;
		 bEPPflags_setup_dma --;
		 ENABLE;
		 setup_dma();
		}
	}

//  主循环程序
 counter = 0x00 ;
	freqno = 100 ;
 counter = 0x00 ;			 
	P3 = 0xf7 ;
while ( counter < 1000 ) _nop_ ( ) ;
	OutFreq ( freqno ) ;  // 依据频点代码输出控制频率数据值

while( True )   // Main program loop
	{

  if ( counter > 1000 )
			{
				OutFreq ( freqno ) ;  // 依据频点代码输出控制频率数据值
    counter = 0x00 ;			 
//				freqno +=5 ;
//				if ( freqno > 125 ) freqno = 0x00 ;
			}
//*/
if (bEPPflags_bus_reset)   // USB总线复位
  {
 	 DISABLE;
   bEPPflags_bus_reset = 0;
   ENABLE;
// Release D12's SUSPEND pin after bus reset
// Enable 74HCT123 pulse generation before disconnect
// D12SUSPD = 1;
			D12SUSPD=0;
  }
	 if (bEPPflags_suspend)				// USB总线状态改变
  {
   DISABLE;
  	bEPPflags_suspend= 0;
   ENABLE;
			if(D12SUSPD == 1)											// USB总线挂起
	  {
    D12SUSPD = 0;
    P0 = 0xFF;
				P1 = 0x00;
    P2 = 0xFF;
    P3 = 0xF7;
    D12_SetDMA(0xC3);
    D12SUSPD = 1;
    PCON |= 0x02;
    while (1) ;                // loop forever
			}
		}
		if (bEPPflags_setup_packet)// 建立包
  {
		 DISABLE;
		 bEPPflags_setup_packet = 0;
		 ENABLE;
		 control_handler();
		 //D12SUSPD = 1;
		 D12SUSPD=0;
		}
		if(bEPPflags_setup_dma != 0)// 建立DMA
		{
		 DISABLE;
		 bEPPflags_setup_dma --;
		 ENABLE;
		 setup_dma();
		}
///////
 if (MainRxDone)
	{
		MainRxDone = False ;
		MainRxFlag = True ;
//		MainTxLength = 100 ;
//		MainTxIndex = 0x31 ;
//		MainTxDone	= True ;
	}
	if (MainTxDone)
	{
  if (	MainTxLength > 0x00 )
		{
		 ioSize = ioCount	= 64 ;
		 for ( i = 23 ; i < 64 ; i ++ ) EpBuf [i] = 0x21 + i ;
			for ( i = 0 ; i < 8 ; i ++ ) EpBuf [i] = MyDateStr[i] ;
			for ( i = 0 ; i < 8 ; i ++ ) EpBuf [i+10] = MyTimeStr[i] ;
			EpBuf [8] = 0x20 ;
			EpBuf [9] = 0x20 ;
			EpBuf [18] = 0x20 ;
			EpBuf [19] = 0x20 ;
			EpBuf [20] = 0x20 ; //MainTxIndex ;
			EpBuf [21] = 0x20 ;
			EpBuf [22] = 0x20 ;
		 if ( MainTxLength > 64 ) D12_WriteEndpoint(5, 64, EpBuf );
		 else D12_WriteEndpoint(5, MainTxLength, EpBuf );
		 if ( MainTxLength > 64 ) MainTxLength -= 64 ;
		 else MainTxLength = 0x00 ;
//			MainTxIndex ++ ;
		}
		MainTxDone	= False ;
	}
// 命令格式:"!123x!",!=标识,123=命令号三个ASCII字符(数字),X=三个ASC字符的XOR校验
 if(bEPPflags_ep1_rxdone)
 {
	 	DISABLE;
		 bEPPflags_ep1_rxdone = False;
		 ENABLE;
			CommandFlag = True ;
			if ( (	GenEpBuf[0] != '!' ) || ( GenEpBuf[5] != '!' ) ) CommandFlag = False ;
			i = GenEpBuf[1] ^ GenEpBuf[2] ;
			i ^= GenEpBuf[3] ;
			if ( i != GenEpBuf[4] ) CommandFlag = False ;
			i  = ( GenEpBuf[1] - 0x30 ) * 100 ;
			i += ( GenEpBuf[2] - 0x30 ) * 10 ;
			i += ( GenEpBuf[3] - 0x30 ) ;
			if ( i >= MaxCmdNo ) CommandFlag = False ;
 		if ( CommandFlag )
			{
    for ( j = 0 ; j < 6 ; j ++ ) GenEpBufToHost[j]=GenEpBuf[j] ;
    switch (i)
				{
				 case 0 :
					default :
					 OutFreq ( GenEpBuf[6] ) ;  // 依据频点代码输出控制频率数据值
   		 for ( i = 0 ; i < 16 ; i ++ ) GenEpBufToHost[i]=GenEpBuf[i] ;
      break ;
				}
			}
   else for ( i = 0 ; i < 16 ; i ++ ) GenEpBufToHost[i] = ErrorCheck [i] ;
 		D12_WriteEndpoint(3, 16, GenEpBufToHost);
  }
/*
if ( RxdEnd != RxdHead )
		{
	  coma_rxd_buff [ RxdEnd ++ ] ;
			RxdEnd &= 0x7f ;
		}
*/
 } // Main Loop
//=======================================	
}