/*********************************************************************
* @fn zbSocTransportWrite
*
* @brief Write to the the serial port to the CC253x.
*
* @param fd - file descriptor of the UART device
*
* @return status
*/
void zbSocTransportWrite( uint8_t* buf, uint8_t len )
{
if (len > SPI_MAX_DAT_LEN)
{
len = SPI_MAX_DAT_LEN;
}
spiTxPkt[SPI_LEN_IDX] = len;
(void)memcpy(spiTxPkt + SPI_DAT_IDX, buf, len);
spiCalcFcs(spiTxPkt);
spiTxPkt[SPI_SOF_IDX] = SPI_SOF;
spiClockData(spiTxPkt, SPI_PKT_LEN(spiTxPkt));
return;
}
/**************************************************************************************************
* @fn HalUARTWriteSPI
*
* @brief Transmit data bytes as a SPI packet.
*
* input parameters
*
* @param buf - pointer to the memory of the data bytes to send.
* @param len - the length of the data bytes to send.
*
* output parameters
*
* None.
*
* @return Zero for any error; otherwise, 'len'.
*/
static spiLen_t HalUARTWriteSPI(uint8 *buf, spiLen_t len)
{
// Already in Tx or Rx transaction
#ifdef RBA_UART_TO_SPI
// The RBA Bridge is not written to handle re-writes so we must
// just let it write
if (spiTxLen != 0)
#else //!RBA_UART_TO_SPI
if (spiTxLen != 0 || SPI_RDY_OUT())
#endif
{
return 0;
}
if (len > SPI_MAX_DAT_LEN)
{
len = SPI_MAX_DAT_LEN;
}
spiTxLen = len;
writeActive = 1;
#if defined HAL_SPI_MASTER
spiTxPkt[SPI_LEN_IDX] = len;
(void)memcpy(spiTxPkt + SPI_DAT_IDX, buf, len);
spiCalcFcs(spiTxPkt);
spiTxPkt[SPI_SOF_IDX] = SPI_SOF;
halDMADesc_t *ch = HAL_DMA_GET_DESC1234(HAL_SPI_CH_TX);
HAL_DMA_SET_LEN(ch, SPI_PKT_LEN(spiTxPkt)); /* DMA TX might need padding */
/* Abort any pending DMA operations */
HAL_DMA_ABORT_CH( HAL_SPI_CH_RX );
spiRxIdx = 0;
(void)memset(spiRxBuf, (DMA_PAD ^ 0xFF), SPI_MAX_PKT_LEN * sizeof(uint16));
HAL_DMA_ARM_CH(HAL_SPI_CH_RX);
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
/* Abort any pending DMA operations */
HAL_DMA_ABORT_CH( HAL_SPI_CH_TX );
HAL_DMA_ARM_CH(HAL_SPI_CH_TX);
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
SPI_SET_CSn_OUT();
while((!SPI_RDY_IN()) && (!spiRdyIsr) );
HAL_DMA_MAN_TRIGGER(HAL_SPI_CH_TX);
#elif !defined HAL_SPI_MASTER
#ifdef POWER_SAVING
/* Disable POWER SAVING when transmission is initiated */
CLEAR_SLEEP_MODE();
#endif
HAL_DMA_ARM_CH(HAL_SPI_CH_RX);
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
spiTxPkt[SPI_LEN_IDX] = len;
(void)memcpy(spiTxPkt + SPI_DAT_IDX, buf, len);
spiCalcFcs(spiTxPkt);
spiTxPkt[SPI_SOF_IDX] = SPI_SOF;
halDMADesc_t *ch = HAL_DMA_GET_DESC1234(HAL_SPI_CH_TX);
HAL_DMA_SET_LEN(ch, SPI_PKT_LEN(spiTxPkt) + 1); /* slave DMA TX might drop the last byte */
HAL_DMA_ARM_CH(HAL_SPI_CH_TX);
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
SPI_SET_RDY_OUT();
#endif
return len;
}
/**************************************************************************************************
* @fn HalUARTWriteSPI
*
* @brief Transmit data bytes as a SPI packet.
*
* input parameters
*
* @param buf - pointer to the memory of the data bytes to send.
* @param len - the length of the data bytes to send.
*
* output parameters
*
* None.
*
* @return Zero for any error; otherwise, 'len'.
*/
static spiLen_t HalUARTWriteSPI(uint8 *buf, spiLen_t len)
{
if (spiTxLen != 0)
{
return 0;
}
if (len > SPI_MAX_DAT_LEN)
{
len = SPI_MAX_DAT_LEN;
}
spiTxLen = len;
#if defined HAL_SPI_MASTER
spiRdyIsr = 0;
spiTxPkt[SPI_LEN_IDX] = len;
(void)memcpy(spiTxPkt + SPI_DAT_IDX, buf, len);
spiCalcFcs(spiTxPkt);
spiTxPkt[SPI_SOF_IDX] = SPI_SOF;
halDMADesc_t *ch = HAL_DMA_GET_DESC1234(HAL_SPI_CH_TX);
HAL_DMA_SET_LEN(ch, SPI_PKT_LEN(spiTxPkt)); /* DMA TX might need padding */
/* Abort any pending DMA operations */
HAL_DMA_ABORT_CH( HAL_SPI_CH_RX );
spiRxIdx = 0;
(void)memset(spiRxBuf, (DMA_PAD ^ 0xFF), SPI_MAX_PKT_LEN * sizeof(uint16));
HAL_DMA_ARM_CH(HAL_SPI_CH_RX);
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
/* Abort any pending DMA operations */
HAL_DMA_ABORT_CH( HAL_SPI_CH_TX );
HAL_DMA_ARM_CH(HAL_SPI_CH_TX);
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
SPI_SET_CSn_OUT();
while((!SPI_RDY_IN()) && (!spiRdyIsr) );
HAL_DMA_MAN_TRIGGER(HAL_SPI_CH_TX);
#elif !defined HAL_SPI_MASTER
#ifdef POWER_SAVING
/* Disable POWER SAVING when transmission is initiated */
CLEAR_SLEEP_MODE();
#endif
SPI_CLR_RDY_OUT();
HAL_DMA_ARM_CH(HAL_SPI_CH_RX);
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
if ( SPI_RDY_IN() )
{
SPI_SET_RDY_OUT();
}
spiTxPkt[SPI_LEN_IDX] = len;
(void)memcpy(spiTxPkt + SPI_DAT_IDX, buf, len);
spiCalcFcs(spiTxPkt);
spiTxPkt[SPI_SOF_IDX] = SPI_SOF;
halDMADesc_t *ch = HAL_DMA_GET_DESC1234(HAL_SPI_CH_TX);
HAL_DMA_SET_LEN(ch, SPI_PKT_LEN(spiTxPkt) + 1); /* slave DMA TX might drop the last byte */
HAL_DMA_ARM_CH(HAL_SPI_CH_TX);
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
asm("NOP"); asm("NOP"); asm("NOP"); asm("NOP");
SPI_SET_RDY_OUT();
#endif
return len;
}