board.h

信号fm调制与解调的dsp实现

/*  Parameters:                                                              */
/*      - sem - desired semaphore                                            */
/*                                                                           */ 
/*  Return:                                                                  */
/*  - OK success                                                             */
/*  - ERROR failure                                                          */
/*                                                                           */ 
/*  Notes:                                                                   */
/*                                                                           */ 
/*****************************************************************************/
s16 brd_sem_get(BrdSem sem);

/*****************************************************************************/
/*  s16 brd_sem_wait(void)                                                   */
/*                                                                           */ 
/*  This routine tries to obtain the specified user semaphore. It blocks till*/
/*  the semaphore is obtained.                                               */
/*                                                                           */
/*  Parameters:                                                              */
/*      - sem - desired semaphore                                            */
/*                                                                           */ 
/*  Return:                                                                  */
/*  - OK success                                                             */
/*  - ERROR failure                                                          */
/*                                                                           */ 
/*  Notes:                                                                   */
/*                                                                           */ 
/*****************************************************************************/
s16 brd_sem_wait(BrdSem sem);

/*****************************************************************************/
/*  s16 brd_sem_release(void)                                                */
/*                                                                           */ 
/*  This routine releases the previously obtained semaphore.                 */
/*                                                                           */
/*  Parameters:                                                              */
/*      - sem - semaphore to release                                         */
/*                                                                           */ 
/*  Return:                                                                  */
/*  - OK success                                                             */
/*  - ERROR failure                                                          */
/*                                                                           */ 
/*  Notes:                                                                   */
/*                                                                           */ 
/*****************************************************************************/
s16 brd_sem_release(BrdSem sem);

/*****************************************************************************/
/*  s16 brd_fifo_read (s8 *bufptr, u16 cnt)			            		     */
/*                                                                           */
/*  This routine begins a synchronous read from the fifo channel.            */
/*                                                                           */
/*  Parameters:                                                              */
/*  - p_buffer is the location of the data to be written to the FIFO         */
/*  - num_bytes is the number of bytes of data to be written to the FIFO,    */
/*                                                                           */
/*  Return:                                                                  */
/*  - returns OK or ERROR,												     */
/*      possible error conditions include: another send in progress,         */
/*      chan not open, no DMA chan available                                 */
/*                                                                           */
/*  Notes:                                                                   */
/*                                                                           */
/*****************************************************************************/
s16 brd_fifo_read(char *bufptr, u16 cnt);

/*****************************************************************************/
/*  s16 brd_fifo_write (s8 *bufptr, u16 cnt)   					             */
/*                                                                           */
/*  This routine begins a synchronous read from the fifo channel.            */
/*                                                                           */
/*  Parameters:                                                              */
/*  - p_buffer is the location of the data to be written to the FIFO         */
/*  - num_bytes is the number of bytes of data to be written to the FIFO,    */
/*                                                                           */
/*  Return:                                                                  */
/*  - returns OK or ERROR,													 */
/*                                                                           */
/*  Notes:                                                                   */
/*                                                                           */
/*****************************************************************************/
s16 brd_fifo_write(char *bufptr, u16 cnt);

/*****************************************************************************/
/*  s16 brd_delay_msec(u16 msec)                                             */
/*                                                                           */ 
/*  This routine delays execution by specified milliseconds.                 */
/*                                                                           */
/*  Parameters:                                                              */
/*      - msec - time delay in milliseconds.                                 */
/*                                                                           */ 
/*  Return:                                                                  */
/*  - TRUE success                                                           */
/*  - FALSE failure                                                          */
/*                                                                           */ 
/*  Notes:                                                                   */
/*                                                                           */ 
/*  The delay is implemented using timer 0 at port (0x24). Care must be      */ 
/*  taken not to interrupt timer operation by way of interrupts.             */
/*  Maximum supported delay is 6553 usec or 6.5 secs.                        */ 
/*                                                                           */ 
/*  WARNING: This function is not compatible with DSP/BIOS                   */
/*                                                                           */
/*****************************************************************************/
s16 brd_delay_msec(u16 msec);

/*****************************************************************************/
/*  s16 brd_delay_usec(u16 usec)                                             */
/*                                                                           */ 
/*  This routine delays execution by specified microseconds.                 */
/*                                                                           */
/*  Parameters:                                                              */
/*      - usec - time delay in microseconds.                                 */
/*                                                                           */ 
/*  Return:                                                                  */
/*  - TRUE success                                                           */
/*  - FALSE failure                                                          */
/*                                                                           */ 
/*  Notes:                                                                   */
/*                                                                           */ 
/*  The delay is implemented using timer 0 at port (0x24). Care must be      */ 
/*  taken not to interrupt timer operation by way of interrupts.             */
/*  Maximum supported delay is 65536 usec or 65.536 msecs.                   */ 
/*                                                                           */ 
/*  WARNING: This function is not compatible with DSP/BIOS                   */
/*                                                                           */
/*****************************************************************************/
s16 brd_delay_usec(u16 usec);

/*****************************************************************************/
/*  s16 brd_set_wait_states(u16 flashDbProg,                                 */
/*                          u16 data32_64,                                   */
/*                          u16 io)                                          */
/*                                                                           */ 
/*  This routine sets the wait states for program, data & I/O spaces         */
/*                                                                           */
/*  Parameters:                                                              */
/*      - extendedProg - dsk onboard external program memory wait states     */
/*      - flashDbProg - flash/daughter board memory wait states              */
/*      - data0_32 - first 32K data memory wait states                       */
/*      - data32_64 - Second 32K data memory wait states                     */
/*      - io - I/O wait states                                               */
/*                                                                           */ 
/*  Return:                                                                  */
/*  - OK success                                                             */
/*  - ERROR failure                                                          */
/*                                                                           */ 
/*  Notes:                                                                   */
/*                                                                           */ 
/*  WARNING: This function is not compatible with DSP/BIOS                   */
/*                                                                           */
/*****************************************************************************/
s16 brd_set_wait_states(u16 flashDbProg, 
                        u16 data32_64, 
                        u16 io);

/*****************************************************************************/
/*   brd_set_cpu_freq()                                                      */
/*                                                                           */
/*  This routine sets the CPU frequency                                      */
/*                                                                           */
/*  Parameters:                                                              */
/*  - freq frequency in MHz to set cpu clock                                 */
/*                                                                           */
/*  Return:                                                                  */
/*  - void                                                                   */
/*                                                                           */
/*  Notes:                                                                   */
/*                                                                           */
/*  Board frequencies must be a multiple of 10 with the lowest being 20 MHz  */
/*  and the highest being 100 MHz.  Board frequencies supported are:	     */
/*  20,30,40,50,60,70,                                                       */ 
/*                                                                           */
/*  WARNING: This function is not compatible with DSP/BIOS                   */
/*                                                                           */
/*****************************************************************************/
void brd_set_cpu_freq(u16 freq);

/*****************************************************************************/
/*   brd_get_cpu_freq()                                                      */
/*                                                                           */
/*  This routine returns the CPU frequency                                   */
/*                                                                           */
/*  Parameters:                                                              */
/*  - None                    					                             */
/*                                                                           */
/*  Return:                                                                  */
/*  - void                                                                   */
/*                                                                           */
/*  Notes:                                                                   */
/*****************************************************************************/
u16 brd_get_cpu_freq();

/*****************************************************************************/
/*   brd_io_redir()                                                          */
/*                                                                           */
/*  This routine redirects printfs to the host terminal.                     */
/*                                                                           */
/*  Parameters:                                                              */
/*  - None                    					                             */
/*                                                                           */
/*  Return:                                                                  */
/*  - void                                                                   */
/*                                                                           */
/*  Notes:                                                                   */
/*****************************************************************************/
void brd_io_redir(bool enable);

/*****************************************************************************/
/*  s16 brd_mem_transfer()                                                   */
/*                                                                           */ 
/*  This routine uses the DMA to transfer data from one mem location to the  */
/*  the other.                                                               */
/*                                                                           */ 
/*  Parameters:                                                              */
/*      - ch : DMA channel to use.                                           */
/*      - src_addr - source address.                                         */
/*      - src_space - source memory space. Values in dma5410.h               */
/*      - dst_addr - destination address.                                    */
/*      - dst_space - destination memory space. Values in dma5410.h          */
/*      - cnt - number of words to transfer.                                 */
/*      - sync - wait for transfer to complete.                              */
/*  Return:                                                                  */
/*  - OK success                                                             */
/*  - ERROR failure                                                          */
/*                                                                           */ 
/*  Notes:                                                                   */
/*  - If channel is busy call waits for channel to be available.             */
/*                                                                           */ 
/*****************************************************************************/
s16 brd_mem_transfer(u16 ch, u16 *src_addr, u16 src_space, 
                             u16 *dst_addr, u16 dst_space, u16 cnt, bool sync);


#endif /* end of #ifndef _BOARD_H */