/**
* \brief Handler for ACK reception timeout
*
* \param parameter Unused callback parameter
*/
static void ack_timer_expiry_handler_cb(void *parameter)
{
if (tal_csma_state == TX_DONE_SUCCESS) {
return;
}
set_trx_state(CMD_FORCE_PLL_ON);
/* debug pin to switch on: define ENABLE_DEBUG_PINS, pal_config.h */
PIN_NO_ACK_START();
tal_csma_state = TX_DONE_NO_ACK;
/* debug pin to switch on: define ENABLE_DEBUG_PINS, pal_config.h */
PIN_NO_ACK_END();
PIN_ACK_WAITING_END();
parameter = parameter; /* Keep compiler happy. */
}
/*
* \brief Handles interrupts issued due to end of transmission
*/
void handle_tx_end_irq(void)
{
/* Check if TX_END interrupt, is issued due to automatic ACK
* transmission. */
#if ((MAC_START_REQUEST_CONFIRM == 1) && (defined BEACON_SUPPORT))
if ((tal_state != TAL_TX_AUTO) && (!tal_beacon_transmission))
#else
if (tal_state != TAL_TX_AUTO)
#endif
{
/* Automatic ACK transmission completed -> No further
* processing. */
return;
}
#if ((MAC_START_REQUEST_CONFIRM == 1) && (defined BEACON_SUPPORT))
if (tal_beacon_transmission) {
tal_beacon_transmission = false;
if (tal_csma_state == BACKOFF_WAITING_FOR_BEACON) {
/* Slotted CSMA has been waiting for a beacon, now it
* can continue. */
tal_csma_state = CSMA_HANDLE_BEACON;
}
} else
#endif /* ((MAC_START_REQUEST_CONFIRM == 1) && (defined BEACON_SUPPORT)) */
{
/* Read trac status before enabling RX_AACK_ON. */
trx_trac_status = (trx_trac_status_t)trx_bit_read(
SR_TRAC_STATUS);
#ifdef BEACON_SUPPORT
if (tal_csma_state == FRAME_SENDING) { /* Transmission was
* issued by slotted CSMA
**/
PIN_TX_END();
tal_state = TAL_SLOTTED_CSMA;
/* Map status message of transceiver to TAL constants.
**/
switch (trx_trac_status) {
case TRAC_SUCCESS_DATA_PENDING:
PIN_ACK_OK_START();
tal_csma_state = TX_DONE_FRAME_PENDING;
break;
case TRAC_SUCCESS:
PIN_ACK_OK_START();
tal_csma_state = TX_DONE_SUCCESS;
break;
case TRAC_CHANNEL_ACCESS_FAILURE:
PIN_NO_ACK_START();
tal_csma_state = CSMA_ACCESS_FAILURE;
break;
case TRAC_NO_ACK:
PIN_NO_ACK_START();
tal_csma_state = TX_DONE_NO_ACK;
break;
case TRAC_INVALID: /* Handle this in the same way as
* default. */
default:
Assert("not handled trac status" == 0);
tal_csma_state = CSMA_ACCESS_FAILURE;
break;
}
PIN_ACK_OK_END();
PIN_ACK_WAITING_END();
} else
#endif /* BEACON_SUPPORT */
/* Trx has handled the entire transmission incl. CSMA */
{
tal_state = TAL_TX_DONE; /* Further handling is done by
* tx_done_handling() */
}
}
/*
* After transmission has finished, switch receiver on again.
* Check if receive buffer is available.
*/
if (NULL == tal_rx_buffer) {
set_trx_state(CMD_PLL_ON);
tal_rx_on_required = true;
} else {
set_trx_state(CMD_RX_AACK_ON);
}
}
/*
* \brief Handles interrupts issued due to end of transmission
*
* \param underrun_occured true if under-run has occurred
*/
void handle_tx_end_irq(bool underrun_occured)
{
#if ((MAC_START_REQUEST_CONFIRM == 1) && (defined BEACON_SUPPORT))
if (tal_beacon_transmission) {
tal_beacon_transmission = false;
if (tal_csma_state == BACKOFF_WAITING_FOR_BEACON) {
/* Slotted CSMA has been waiting for a beacon, now it
* can continue. */
tal_csma_state = CSMA_HANDLE_BEACON;
}
} else
#endif /* ((MAC_START_REQUEST_CONFIRM == 1) && (defined BEACON_SUPPORT)) */
{
#if (defined BEACON_SUPPORT) || (defined ENABLE_TSTAMP)
/*
* Store tx timestamp to frame_info_t structure.
* The timestamping is only required for beaconing networks
* or if timestamping is explicitly enabled.
*/
pal_trx_read_timestamp(&mac_frame_ptr->time_stamp);
#endif /* #if (defined BEACON_SUPPORT) || (defined ENABLE_TSTAMP) */
/* Read trac status before enabling RX_AACK_ON. */
if (underrun_occured) {
trx_trac_status = TRAC_INVALID;
} else {
trx_trac_status = (trx_trac_status_t)trx_bit_read(
SR_TRAC_STATUS);
}
#ifdef BEACON_SUPPORT
if (tal_csma_state == FRAME_SENDING) { /* Transmission was
* issued by slotted CSMA
**/
PIN_TX_END();
tal_state = TAL_SLOTTED_CSMA;
/* Map status message of transceiver to TAL constants.
**/
switch (trx_trac_status) {
case TRAC_SUCCESS_DATA_PENDING:
PIN_ACK_OK_START();
tal_csma_state = TX_DONE_FRAME_PENDING;
break;
case TRAC_SUCCESS:
PIN_ACK_OK_START();
tal_csma_state = TX_DONE_SUCCESS;
break;
case TRAC_CHANNEL_ACCESS_FAILURE:
PIN_NO_ACK_START();
tal_csma_state = CSMA_ACCESS_FAILURE;
break;
case TRAC_NO_ACK:
PIN_NO_ACK_START();
tal_csma_state = TX_DONE_NO_ACK;
break;
case TRAC_INVALID: /* Handle this in the same way as
* default. */
default:
Assert("not handled trac status" == 0);
tal_csma_state = CSMA_ACCESS_FAILURE;
break;
}
PIN_ACK_OK_END();
PIN_ACK_WAITING_END();
} else
#endif /* BEACON_SUPPORT */
/* Trx has handled the entire transmission incl. CSMA */
{
tal_state = TAL_TX_DONE; /* Further handling is done by
* tx_done_handling() */
}
}
/*
* After transmission has finished, switch receiver on again.
* Check if receive buffer is available.
*/
if (NULL == tal_rx_buffer) {
set_trx_state(CMD_PLL_ON);
tal_rx_on_required = true;
} else {
set_trx_state(CMD_RX_AACK_ON);
}
}
