48 #include "sys/clock.h" 51 #include "dev/watchdog.h" 54 #include <ti/devices/DeviceFamily.h> 55 #include DeviceFamily_constructPath(driverlib/rf_mailbox.h) 56 #include DeviceFamily_constructPath(driverlib/rf_common_cmd.h) 57 #include DeviceFamily_constructPath(driverlib/rf_data_entry.h) 58 #include DeviceFamily_constructPath(driverlib/rf_prop_cmd.h) 59 #include DeviceFamily_constructPath(driverlib/rf_prop_mailbox.h) 61 #include <ti/drivers/rf/RF.h> 78 #define LOG_MODULE "Radio" 79 #define LOG_LEVEL LOG_LEVEL_NONE 82 #define CLAMP(v, vmin, vmax) (MAX(MIN(v, vmax), vmin)) 85 #define PROP_MODE_DYN_WHITENER PROP_MODE_CONF_DW 86 #define PROP_MODE_USE_CRC16 PROP_MODE_CONF_USE_CRC16 87 #define PROP_MODE_CENTER_FREQ PROP_MODE_CONF_CENTER_FREQ 88 #define PROP_MODE_LO_DIVIDER PROP_MODE_CONF_LO_DIVIDER 89 #define PROP_MODE_CCA_RSSI_THRESHOLD PROP_MODE_CONF_CCA_RSSI_THRESHOLD 99 #define DOT_4G_MAX_FRAME_LEN 2047 100 #define DOT_4G_PHR_LEN 2 103 #define DOT_4G_PHR_CRC16 0x10 104 #define DOT_4G_PHR_DW 0x08 106 #if PROP_MODE_USE_CRC16 108 #define DOT_4G_PHR_CRC_BIT DOT_4G_PHR_CRC16 112 #define DOT_4G_PHR_CRC_BIT 0 116 #if PROP_MODE_DYN_WHITENER 117 #define DOT_4G_PHR_DW_BIT DOT_4G_PHR_DW 119 #define DOT_4G_PHR_DW_BIT 0 123 #define TIMEOUT_ENTER_RX_WAIT (RTIMER_SECOND >> 10) 126 #define TIMEOUT_DATA_ENTRY_BUSY (RTIMER_SECOND / 250) 129 #define TX_BUF_HDR_LEN 2 130 #define TX_BUF_PAYLOAD_LEN 180 132 #define TX_BUF_SIZE (TX_BUF_HDR_LEN + TX_BUF_PAYLOAD_LEN) 135 typedef uint16_t lensz_t;
137 #define FRAME_OFFSET sizeof(lensz_t) 138 #define FRAME_SHAVE 2 141 #define RX_SENSITIVITY_DBM -110 142 #define RX_SATURATION_DBM 10 143 #define ED_MIN_DBM_ABOVE_RX_SENSITIVITY 10 146 #define ED_RF_POWER_MIN_DBM (RX_SENSITIVITY_DBM + ED_MIN_DBM_ABOVE_RX_SENSITIVITY) 147 #define ED_RF_POWER_MAX_DBM RX_SATURATION_DBM 150 typedef rfc_propRxOutput_t rx_output_t;
154 uint8_t tx_buf[TX_BUF_SIZE] CC_ALIGN(4);
157 rx_output_t rx_stats;
160 int8_t rssi_threshold;
170 static prop_radio_t prop_radio;
173 #define cmd_radio_setup (*(volatile rfc_CMD_PROP_RADIO_DIV_SETUP_t *)&rf_cmd_prop_radio_div_setup) 174 #define cmd_fs (*(volatile rfc_CMD_FS_t *) &rf_cmd_prop_fs) 175 #define cmd_tx (*(volatile rfc_CMD_PROP_TX_ADV_t *) &rf_cmd_prop_tx_adv) 176 #define cmd_rx (*(volatile rfc_CMD_PROP_RX_ADV_t *) &rf_cmd_prop_rx_adv) 181 return cmd_tx.status == ACTIVE;
187 return cmd_rx.status == ACTIVE;
191 static int off(
void);
196 cmd_radio_setup.centerFreq = PROP_MODE_CENTER_FREQ;
197 cmd_radio_setup.loDivider = PROP_MODE_LO_DIVIDER;
199 data_queue_t *data_queue = data_queue_init(
sizeof(lensz_t));
201 cmd_rx.maxPktLen = DOT_4G_MAX_FRAME_LEN - cmd_rx.lenOffset;
202 cmd_rx.pQueue = data_queue;
203 cmd_rx.pOutput = (uint8_t *)&prop_radio.rx_stats;
211 const bool rx_is_idle = !rx_is_active();
214 res = netstack_sched_rx(
false);
215 if(res != RF_RESULT_OK) {
216 return RF_GET_RSSI_ERROR_VAL;
221 while((cmd_rx.status != ACTIVE) &&
222 RTIMER_CLOCK_LT(
RTIMER_NOW(), t0 + TIMEOUT_ENTER_RX_WAIT)) ;
224 int8_t rssi = RF_GET_RSSI_ERROR_VAL;
226 rssi = RF_getRssi(prop_radio.rf_handle);
239 uint32_t freq_khz = cmd_fs.frequency * 1000;
247 freq_khz += (((cmd_fs.fractFreq * 1000) + 65535) / 65536);
249 return (uint8_t)((freq_khz - DOT_15_4G_CHAN0_FREQ) / DOT_15_4G_FREQ_SPACING);
257 if(!dot_15_4g_chan_in_range(channel)) {
258 LOG_WARN(
"Supplied hannel %d is illegal, defaults to %d\n",
259 (
int)channel, DOT_15_4G_DEFAULT_CHAN);
260 channel = DOT_15_4G_DEFAULT_CHAN;
263 if(channel == prop_radio.channel) {
268 const uint32_t new_freq = dot_15_4g_freq(channel);
269 const uint16_t freq = (uint16_t)(new_freq / 1000);
270 const uint16_t frac = (uint16_t)(((new_freq - (freq * 1000)) * 0x10000) / 1000);
272 LOG_DBG(
"Set channel to %d, frequency 0x%04X.0x%04X (%lu)\n",
273 (
int)channel, freq, frac, new_freq);
275 cmd_fs.frequency = freq;
276 cmd_fs.fractFreq = frac;
278 res = netstack_sched_fs();
280 if(res != RF_RESULT_OK) {
284 prop_radio.channel = channel;
289 calculate_lqi(int8_t rssi)
296 rssi = CLAMP(rssi, ED_RF_POWER_MIN_DBM, ED_RF_POWER_MAX_DBM);
304 return (ED_MAX * (rssi - ED_RF_POWER_MIN_DBM)) / (ED_RF_POWER_MAX_DBM - ED_RF_POWER_MIN_DBM);
308 prepare(
const void *payload,
unsigned short payload_len)
310 const size_t len = MIN((
size_t)payload_len,
311 (
size_t)TX_BUF_PAYLOAD_LEN);
313 memcpy(prop_radio.tx_buf + TX_BUF_HDR_LEN, payload, len);
318 transmit(
unsigned short transmit_len)
323 LOG_ERR(
"A transmission is already active\n");
328 const uint16_t total_length = transmit_len + CRC_LEN;
337 prop_radio.tx_buf[0] = ((total_length >> 0) & 0xFF);
338 prop_radio.tx_buf[1] = ((total_length >> 8) & 0xFF) + DOT_4G_PHR_DW_BIT + DOT_4G_PHR_CRC_BIT;
342 cmd_tx.pktLen = transmit_len + DOT_4G_PHR_LEN;
343 cmd_tx.pPkt = prop_radio.tx_buf;
345 res = netstack_sched_prop_tx();
347 return (res == RF_RESULT_OK)
353 send(
const void *payload,
unsigned short payload_len)
360 read(
void *buf,
unsigned short buf_len)
362 volatile data_entry_t *data_entry = data_queue_current_entry();
366 while((data_entry->status == DATA_ENTRY_BUSY) &&
367 RTIMER_CLOCK_LT(
RTIMER_NOW(), t0 + TIMEOUT_DATA_ENTRY_BUSY)) ;
369 if(data_entry->status != DATA_ENTRY_FINISHED) {
395 uint8_t *
const frame_ptr = (uint8_t *)&data_entry->data;
396 const lensz_t frame_len = *(lensz_t *)frame_ptr;
400 LOG_ERR(
"Received rame is too short, len=%d\n", frame_len);
402 data_queue_release_entry();
406 const uint8_t *payload_ptr = frame_ptr +
sizeof(lensz_t);
407 const unsigned short payload_len = (
unsigned short)(frame_len -
FRAME_SHAVE);
410 if(payload_len > buf_len) {
411 LOG_ERR(
"Payload of received frame is too large for local buffer, len=%d buf_len=%d\n",
412 payload_len, buf_len);
414 data_queue_release_entry();
418 memcpy(buf, payload_ptr, payload_len);
421 const int8_t rssi = (int8_t)payload_ptr[payload_len];
423 const uint8_t lqi = calculate_lqi(rssi);
425 packetbuf_set_attr(PACKETBUF_ATTR_RSSI, (packetbuf_attr_t)rssi);
426 packetbuf_set_attr(PACKETBUF_ATTR_LINK_QUALITY, (packetbuf_attr_t)lqi);
428 data_queue_release_entry();
429 return (
int)payload_len;
435 const int8_t rssi = get_rssi();
437 if(rssi == RF_GET_RSSI_ERROR_VAL) {
438 return CCA_STATE_INVALID;
441 return (rssi < prop_radio.rssi_threshold)
450 LOG_ERR(
"Channel clear called while in TX\n");
454 const uint8_t cca_state = cca_request();
457 return cca_state == CCA_STATE_IDLE;
463 if(!rx_is_active()) {
467 const uint8_t cca_state = cca_request();
469 return cca_state == CCA_STATE_BUSY;
475 const data_entry_t *
const read_entry = data_queue_current_entry();
476 volatile const data_entry_t *curr_entry = read_entry;
482 const uint8_t status = curr_entry->status;
483 if((status == DATA_ENTRY_FINISHED) ||
484 (status == DATA_ENTRY_BUSY)) {
489 curr_entry = (data_entry_t *)curr_entry->pNextEntry;
490 }
while(curr_entry != read_entry);
492 if(num_pending > 0) {
505 if(prop_radio.rf_is_on) {
506 LOG_WARN(
"Radio is already on\n");
512 res = netstack_sched_rx(
true);
514 if(res != RF_RESULT_OK) {
515 return RF_RESULT_ERROR;
518 prop_radio.rf_is_on =
true;
525 if(!prop_radio.rf_is_on) {
526 LOG_WARN(
"Radio is already off\n");
532 prop_radio.rf_is_on =
false;
536 static radio_result_t
542 return RADIO_RESULT_INVALID_VALUE;
546 case RADIO_PARAM_POWER_MODE:
548 *value = (prop_radio.rf_is_on)
549 ? RADIO_POWER_MODE_ON
550 : RADIO_POWER_MODE_OFF;
552 return RADIO_RESULT_OK;
554 case RADIO_PARAM_CHANNEL:
556 return RADIO_RESULT_OK;
558 case RADIO_PARAM_TXPOWER:
559 res = rf_get_tx_power(prop_radio.rf_handle, rf_tx_power_table, (int8_t *)&value);
560 return ((res == RF_RESULT_OK) &&
561 (*value != RF_TxPowerTable_INVALID_DBM))
563 : RADIO_RESULT_ERROR;
565 case RADIO_PARAM_CCA_THRESHOLD:
566 *value = prop_radio.rssi_threshold;
567 return RADIO_RESULT_OK;
569 case RADIO_PARAM_RSSI:
571 return (*value == RF_GET_RSSI_ERROR_VAL)
575 case RADIO_CONST_CHANNEL_MIN:
576 *value = DOT_15_4G_CHAN_MIN;
577 return RADIO_RESULT_OK;
579 case RADIO_CONST_CHANNEL_MAX:
580 *value = DOT_15_4G_CHAN_MAX;
581 return RADIO_RESULT_OK;
583 case RADIO_CONST_TXPOWER_MIN:
585 return RADIO_RESULT_OK;
587 case RADIO_CONST_TXPOWER_MAX:
588 *value = (
radio_value_t)tx_power_max(rf_tx_power_table, rf_tx_power_table_size);
589 return RADIO_RESULT_OK;
592 return RADIO_RESULT_NOT_SUPPORTED;
596 static radio_result_t
602 case RADIO_PARAM_POWER_MODE:
604 if(value == RADIO_POWER_MODE_ON) {
605 return (
on() == RF_RESULT_OK)
607 : RADIO_RESULT_ERROR;
608 }
else if(value == RADIO_POWER_MODE_OFF) {
610 return RADIO_RESULT_OK;
613 return RADIO_RESULT_INVALID_VALUE;
615 case RADIO_PARAM_CHANNEL:
617 return (res == RF_RESULT_OK)
619 : RADIO_RESULT_ERROR;
621 case RADIO_PARAM_TXPOWER:
622 if(!tx_power_in_range((int8_t)value, rf_tx_power_table, rf_tx_power_table_size)) {
623 return RADIO_RESULT_INVALID_VALUE;
625 res = rf_set_tx_power(prop_radio.rf_handle, rf_tx_power_table, (int8_t)value);
626 return (res == RF_RESULT_OK)
628 : RADIO_RESULT_ERROR;
630 case RADIO_PARAM_RX_MODE:
631 return RADIO_RESULT_OK;
633 case RADIO_PARAM_CCA_THRESHOLD:
634 prop_radio.rssi_threshold = (int8_t)value;
635 return RADIO_RESULT_OK;
638 return RADIO_RESULT_NOT_SUPPORTED;
642 static radio_result_t
643 get_object(radio_param_t param,
void *dest,
size_t size)
645 return RADIO_RESULT_NOT_SUPPORTED;
648 static radio_result_t
649 set_object(radio_param_t param,
const void *src,
size_t size)
651 return RADIO_RESULT_NOT_SUPPORTED;
657 if(prop_radio.rf_handle) {
658 LOG_WARN(
"Radio is already initialized\n");
663 prop_radio.rf_is_on =
false;
666 prop_radio.rssi_threshold = PROP_MODE_CCA_RSSI_THRESHOLD;
672 RF_Params_init(&rf_params);
676 prop_radio.rf_handle = netstack_open(&rf_params);
678 if(prop_radio.rf_handle == NULL) {
679 LOG_ERR(
"Unable to open RF driver during initialization\n");
680 return RF_RESULT_ERROR;
685 ENERGEST_ON(ENERGEST_TYPE_LISTEN);
radio_result_t(* get_object)(radio_param_t param, void *dest, size_t size)
Get a radio parameter object.
Header file with descriptors for the various modes of operation defined in IEEE 802.15.4g.
int(* prepare)(const void *payload, unsigned short payload_len)
Prepare the radio with a packet to be sent.
Header file of TX power functionality of CC13xx/CC26xx.
static uint8_t rf_is_on(void)
Checks whether the RFC domain is accessible and the RFC is in IEEE RX.
#define FRAME_SHAVE
RSSI (1) + Status (1)
Header file for the energy estimation mechanism
int(* receiving_packet)(void)
Check if the radio driver is currently receiving a packet.
radio_result_t(* set_value)(radio_param_t param, radio_value_t value)
Set a radio parameter value.
int(* pending_packet)(void)
Check if the radio driver has just received a packet.
The structure of a device driver for a radio in Contiki.
static void set_channel(uint8_t channel)
Set the current operating channel.
int(* channel_clear)(void)
Perform a Clear-Channel Assessment (CCA) to find out if there is a packet in the air or not...
int radio_value_t
Each radio has a set of parameters that designate the current configuration and state of the radio...
#define IEEE802154_DEFAULT_CHANNEL
The default channel for IEEE 802.15.4 networks.
#define RTIMER_NOW()
Get the current clock time.
Header file of the CC13xx/CC26xx RF scheduler.
int(* send)(const void *payload, unsigned short payload_len)
Prepare & transmit a packet.
int(* transmit)(unsigned short transmit_len)
Send the packet that has previously been prepared.
void process_poll(struct process *p)
Request a process to be polled.
int(* off)(void)
Turn the radio off.
#define RF_CONF_INACTIVITY_TIMEOUT
2 ms
Header file for the real-time timer module.
Header file of the CC13xx/CC26xx RF data queue.
Header file of RF settings for CC13xx/CC26xx.
int(* read)(void *buf, unsigned short buf_len)
Read a received packet into a buffer.
Header file for the Packet buffer (packetbuf) management
Include file for the Contiki low-layer network stack (NETSTACK)
radio_result_t(* get_value)(radio_param_t param, radio_value_t *value)
Get a radio parameter value.
Default definitions of C compiler quirk work-arounds.
Header file for the logging system
radio_result_t(* set_object)(radio_param_t param, const void *src, size_t size)
Set a radio parameter object.
int(* on)(void)
Turn the radio on.
void process_start(struct process *p, process_data_t data)
Start a process.
static uint8_t get_channel()
Get the current operating channel.