maindef.h

一段ADSP21262用DAI口实现UART通讯的汇编源代码。

#define UART_RX_BUFFER_LEN 512

/* FILE:maindef.h */
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/*  Setup_UART( int DSP_Frequency, int BAUD ):*/
//float Setup_UART( float,float);
	int Setup_UART(void);
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////////////////////////////////////////////////////////////
/* UartTX_Service():This function handles the TX interrupt 
   and moving data from the UART_Transmit_Buffer out to the
   serial port. This function should be placed in the SPORT 
   1 ISR. */
//	void UartTX_Service(int sig_int);
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////////////////////////////////////////////////////////////
/*Uart_TX_Word(char):
  Description:
     This function writes a value to the SPORT1 transmit 
     register. It first takes the 8-bit value and creates 
     a 30-bit value for transmitting. 
 */
	void UartTX_Word(char);
////////////////////////////////////////////////////////////


////////////////////////////////////////////////////////////
/*void UartTx_Buffer(char *buf,int buflenth);
  Description:
     This function writes a buffer of data to the SPORT1 
     transmit register. It first takes the 8-bit value 
     and creates an 11-bit value for transmitting.
 */
	void UartTx_Buffer(char *,int );
////////////////////////////////////////////////////////////


////////////////////////////////////////////////////////////
/* Uart_Rx
Description:
   Once a SPORT3 receive interrupt occurs, this function 
   should be called (from C) to retrieve the and interpret
   the value. This routine captures the input from RX3A, a
   derives the 8-bit value.
 */
	char UartRx(void);
////////////////////////////////////////////////////////////
#if 0
extern int _UART_Error;
extern int UART_Transmit_Buffer[UART_TX_BUFFER_LEN];
extern int UART_Transmit_Buffer_Read_Ptr;
extern int UART_Transmit_Buffer_Write_Ptr;
#endif
	char RX_Buffer[UART_RX_BUFFER_LEN];
	int Rx_Indx;