dmatoradio.c

来自「CHIPCON公司CC1100参考设计库及应用文档可用于初步设计参考」· C语言 代码 · 共 46 行

/******************************************************************************
*                                                                             *
*        **********                                                           *
*       ************                                                          *
*      ***        ***                                                         *
*     ***    ++    ***                                                        *
*     ***   +  +   ***                      CHIPCON                           *
*     ***   +                                                                 *
*     ***   +  +   ***                                                        *
*     ***    ++    ***                                                        *
*      ***        ***                                                         *
*       ************                                                          *
*        **********                                                           *
*                                                                             *
*******************************************************************************

Filename:     dmaToRadio.c
Target:       cc1110
Author:       EFU
Revised:      2/3-2006
Revision:     1.0
******************************************************************************/

#include "cul.h"

//-----------------------------------------------------------------------------
// See cul.h for a description of this function.
//-----------------------------------------------------------------------------
void culDmaToRadio(DMA_DESC* pDmaChannel, WORD length, BYTE* pSrcAddr, BOOL generateInterrupt){
   SET_WORD(pDmaChannel->SRCADDRH, pDmaChannel->SRCADDRL,   pSrcAddr); // The start address of the segment
   SET_WORD(pDmaChannel->DESTADDRH, pDmaChannel->DESTADDRL, &X_RFD);   // Tx FIFO address
   SET_WORD(pDmaChannel->LENH, pDmaChannel->LENL, length);             // Setting the length of the transfer (bytes)
   pDmaChannel->VLEN           = VLEN_USE_LEN;                         // Using the length field
   pDmaChannel->PRIORITY       = PRI_LOW;
   pDmaChannel->M8             = M8_USE_8_BITS;                        // Transferring all 8 bits in each byte.
   pDmaChannel->IRQMASK        = generateInterrupt;                    // The DMA complete interrupt flag is set at completion.
   pDmaChannel->DESTINC        = DESTINC_0;                            // The destination address is constant
   pDmaChannel->SRCINC         = SRCINC_1;                             // The address for data fetch is inremented by 1 byte
   // after each transfer.
   pDmaChannel->TRIG           = DMATRIG_RADIO;                         // DMA is started by writing the radio
   pDmaChannel->TMODE          = TMODE_SINGLE;                          // Byte for byte is transferred.
   pDmaChannel->WORDSIZE       = WORDSIZE_BYTE;                        // One byte is transferred each time.

   return;
}