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Changes to enable TSCH 

poll mode for TSCH including SFD timestamps and send_on_cca
This commit is contained in:
thomas-ha 2016-03-07 17:46:53 +01:00
parent b4c2cd9619
commit b0a673ca5c
1 changed files with 111 additions and 26 deletions
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137
cpu/cc2538/dev/cc2538-rf.c
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@ -120,6 +120,17 @@ static const uint8_t magic[] = { 0x53, 0x6E, 0x69, 0x66 }; /** Snif */
#define CC2538_RF_AUTOACK 1
#endif
/*---------------------------------------------------------------------------*/
#if CC2538_RF_CONF_SFD_TIMESTAMPS
static rtimer_clock_t cc2538_sfd_rtime;
#endif
/* Are we currently in poll mode? Disabled by default */
static uint8_t volatile poll_mode = 0;
/* Do we perform a CCA before sending? Enabled by default. */
static uint8_t send_on_cca = 1;
static int8_t cc2538_last_rssi;
static uint8_t cc2538_last_crc_corr_lqi;
/*---------------------------------------------------------------------------*/
static uint8_t rf_flags;
static uint8_t rf_channel = CC2538_RF_CHANNEL;
@ -329,6 +340,29 @@ set_frame_filtering(uint8_t enable)
}
/*---------------------------------------------------------------------------*/
static void
set_poll_mode(uint8_t enable)
{
poll_mode = enable;
if(enable) {
REG(RFCORE_XREG_RFIRQM0) &= ~RFCORE_XREG_RFIRQM0_FIFOP; // mask out FIFOP interrupt source
REG(RFCORE_SFR_RFIRQF0) &= ~RFCORE_SFR_RFIRQF0_FIFOP; // clear pending FIFOP interrupt
REG(RFCORE_XREG_RFIRQM0) |= RFCORE_XREG_RFIRQM0_SFD; // enable SFD interrupt source
} else {
REG(RFCORE_XREG_RFIRQM0) |= RFCORE_XREG_RFIRQM0_FIFOP; // enable FIFOP interrupt source
REG(RFCORE_XREG_RFIRQM0) &= ~RFCORE_XREG_RFIRQM0_SFD; // mask out SFD interrupt source
REG(RFCORE_SFR_RFIRQF0) &= ~RFCORE_SFR_RFIRQF0_SFD; // clear pending SFD interrupt
}
nvic_interrupt_enable(NVIC_INT_RF_RXTX); // enable RF interrupts
}
/*---------------------------------------------------------------------------*/
static void
set_send_on_cca(uint8_t enable)
{
send_on_cca = enable;
}
/*---------------------------------------------------------------------------*/
static void
set_auto_ack(uint8_t enable)
{
if(enable) {
@ -395,7 +429,9 @@ off(void)
/* Wait for ongoing TX to complete (e.g. this could be an outgoing ACK) */
while(REG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_TX_ACTIVE);
CC2538_RF_CSP_ISFLUSHRX();
if (!(REG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_FIFOP)) {
CC2538_RF_CSP_ISFLUSHRX();
}
/* Don't turn off if we are off as this will trigger a Strobe Error */
if(REG(RFCORE_XREG_RXENABLE) != 0) {
@ -459,10 +495,6 @@ init(void)
set_channel(rf_channel);
/* Acknowledge RF interrupts, FIFOP only */
REG(RFCORE_XREG_RFIRQM0) |= RFCORE_XREG_RFIRQM0_FIFOP;
nvic_interrupt_enable(NVIC_INT_RF_RXTX);
/* Acknowledge all RF Error interrupts */
REG(RFCORE_XREG_RFERRM) = RFCORE_XREG_RFERRM_RFERRM;
nvic_interrupt_enable(NVIC_INT_RF_ERR);
@ -488,6 +520,8 @@ init(void)
*/
udma_set_channel_src(CC2538_RF_CONF_RX_DMA_CHAN, RFCORE_SFR_RFDATA);
}
set_poll_mode(poll_mode);
process_start(&cc2538_rf_process, NULL);
@ -700,15 +734,15 @@ read(void *buf, unsigned short bufsize)
}
/* Read the RSSI and CRC/Corr bytes */
rssi = ((int8_t)REG(RFCORE_SFR_RFDATA)) - RSSI_OFFSET;
crc_corr = REG(RFCORE_SFR_RFDATA);
cc2538_last_rssi = ((int8_t)REG(RFCORE_SFR_RFDATA)) - RSSI_OFFSET;
cc2538_last_crc_corr_lqi = REG(RFCORE_SFR_RFDATA);
PRINTF("%02x%02x\n", (uint8_t)rssi, crc_corr);
PRINTF("%02x%02x\n", (uint8_t)cc2538_last_rssi, cc2538_last_crc_corr_lqi);
/* MS bit CRC OK/Not OK, 7 LS Bits, Correlation value */
if(crc_corr & CRC_BIT_MASK) {
packetbuf_set_attr(PACKETBUF_ATTR_RSSI, rssi);
packetbuf_set_attr(PACKETBUF_ATTR_LINK_QUALITY, crc_corr & LQI_BIT_MASK);
if(cc2538_last_crc_corr_lqi & CRC_BIT_MASK) {
packetbuf_set_attr(PACKETBUF_ATTR_RSSI, cc2538_last_rssi);
packetbuf_set_attr(PACKETBUF_ATTR_LINK_QUALITY, cc2538_last_crc_corr_lqi & LQI_BIT_MASK);
RIMESTATS_ADD(llrx);
} else {
RIMESTATS_ADD(badcrc);
@ -731,14 +765,18 @@ read(void *buf, unsigned short bufsize)
flush();
#endif
/* If FIFOP==1 and FIFO==0 then we had a FIFO overflow at some point. */
if(REG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_FIFOP) {
if(REG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_FIFO) {
process_poll(&cc2538_rf_process);
} else {
CC2538_RF_CSP_ISFLUSHRX();
if(!poll_mode) {
/* If FIFOP==1 and FIFO==0 then we had a FIFO overflow at some point. */
if(REG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_FIFOP) {
if(REG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_FIFO) {
process_poll(&cc2538_rf_process);
} else {
CC2538_RF_CSP_ISFLUSHRX();
}
}
}
CC2538_RF_CSP_ISFLUSHRX();
return (len);
}
@ -796,6 +834,15 @@ get_value(radio_param_t param, radio_value_t *value)
if(REG(RFCORE_XREG_FRMCTRL0) & RFCORE_XREG_FRMCTRL0_AUTOACK) {
*value |= RADIO_RX_MODE_AUTOACK;
}
if(poll_mode) {
*value |= RADIO_RX_MODE_POLL_MODE;
}
return RADIO_RESULT_OK;
case RADIO_PARAM_TX_MODE:
*value = 0;
if(send_on_cca) {
*value |= RADIO_TX_MODE_SEND_ON_CCA;
}
return RADIO_RESULT_OK;
case RADIO_PARAM_TXPOWER:
*value = get_tx_power();
@ -806,6 +853,12 @@ get_value(radio_param_t param, radio_value_t *value)
case RADIO_PARAM_RSSI:
*value = get_rssi();
return RADIO_RESULT_OK;
case RADIO_PARAM_LAST_RSSI:
*value = cc2538_last_rssi;
return RADIO_RESULT_OK;
case RADIO_PARAM_LAST_LINK_QUALITY:
*value = cc2538_last_crc_corr_lqi & LQI_BIT_MASK;
return RADIO_RESULT_OK;
case RADIO_CONST_CHANNEL_MIN:
*value = CC2538_RF_CHANNEL_MIN;
return RADIO_RESULT_OK;
@ -854,13 +907,21 @@ set_value(radio_param_t param, radio_value_t value)
return RADIO_RESULT_OK;
case RADIO_PARAM_RX_MODE:
if(value & ~(RADIO_RX_MODE_ADDRESS_FILTER |
RADIO_RX_MODE_AUTOACK)) {
RADIO_RX_MODE_AUTOACK |
RADIO_RX_MODE_POLL_MODE)) {
return RADIO_RESULT_INVALID_VALUE;
}
set_frame_filtering((value & RADIO_RX_MODE_ADDRESS_FILTER) != 0);
set_auto_ack((value & RADIO_RX_MODE_AUTOACK) != 0);
set_poll_mode((value & RADIO_RX_MODE_POLL_MODE) != 0);
return RADIO_RESULT_OK;
case RADIO_PARAM_TX_MODE:
if(value & ~(RADIO_TX_MODE_SEND_ON_CCA)) {
return RADIO_RESULT_INVALID_VALUE;
}
set_send_on_cca((value & RADIO_TX_MODE_SEND_ON_CCA) != 0);
return RADIO_RESULT_OK;
case RADIO_PARAM_TXPOWER:
if(value < OUTPUT_POWER_MIN || value > OUTPUT_POWER_MAX) {
@ -895,6 +956,19 @@ get_object(radio_param_t param, void *dest, size_t size)
return RADIO_RESULT_OK;
}
if(param == RADIO_PARAM_LAST_PACKET_TIMESTAMP) {
#if CC2538_RF_CONF_SFD_TIMESTAMPS
if(size != sizeof(rtimer_clock_t) || !dest) {
return RADIO_RESULT_INVALID_VALUE;
}
*(rtimer_clock_t*)dest = cc2538_sfd_rtime;
return RADIO_RESULT_OK;
#else
return RADIO_RESULT_NOT_SUPPORTED;
#endif
}
return RADIO_RESULT_NOT_SUPPORTED;
}
/*---------------------------------------------------------------------------*/
@ -950,15 +1024,18 @@ PROCESS_THREAD(cc2538_rf_process, ev, data)
PROCESS_BEGIN();
while(1) {
PROCESS_YIELD_UNTIL(ev == PROCESS_EVENT_POLL);
/* Only if we are not in poll mode oder we are in poll mode and transceiver has to be reset */
PROCESS_YIELD_UNTIL((!poll_mode || (poll_mode && (rf_flags & RF_MUST_RESET))) && (ev == PROCESS_EVENT_POLL));
packetbuf_clear();
len = read(packetbuf_dataptr(), PACKETBUF_SIZE);
if(!poll_mode) {
packetbuf_clear();
len = read(packetbuf_dataptr(), PACKETBUF_SIZE);
if(len > 0) {
packetbuf_set_datalen(len);
if(len > 0) {
packetbuf_set_datalen(len);
NETSTACK_RDC.input();
NETSTACK_RDC.input();
}
}
/* If we were polled due to an RF error, reset the transceiver */
@ -995,10 +1072,18 @@ void
cc2538_rf_rx_tx_isr(void)
{
ENERGEST_ON(ENERGEST_TYPE_IRQ);
#if CC2538_RF_CONF_SFD_TIMESTAMPS
if(poll_mode) {
cc2538_sfd_rtime = RTIMER_NOW();
}
#endif
process_poll(&cc2538_rf_process);
if(!poll_mode) {
process_poll(&cc2538_rf_process);
}
/* We only acknowledge FIFOP so we can safely wipe out the entire SFR */
/* We only acknowledge FIFOP or SFD so we can safely wipe out the entire SFR */
REG(RFCORE_SFR_RFIRQF0) = 0;
ENERGEST_OFF(ENERGEST_TYPE_IRQ);