ST / stm-spirit1-rf-driver

Prototype RF driver for STM Sub-1 GHz RF expansion board based on the SPSGRF-868 module for STM32 Nucleo.

Prototype RF Driver for STM Sub-1 GHz RF Expansion Boards based on the SPSGRF-868 and SPSGRF-915 Modules for STM32 Nucleo

Currently supported boards:

Note, in order to use expansion board X-NUCLEO-IDS01A4 in mbed you need to perform the following HW modifications on the board:

  • Unmount resistor R4
  • Mount resistor R7

Furthermore, on some Nucleo development boards (e.g. the NUCLEO_F429ZI), in order to be able to use Ethernet together with these Sub-1 GHz RF expansion boards, you need to compile this driver with macro SPIRIT1_SPI_MOSI=PB_5 defined, while the development board typically requires some HW modification as e.g. described here!

This driver can be used together with the 6LoWPAN stack (a.k.a. Nanostack).

SimpleSpirit1.cpp@31:a4d8072139f2, 2016-11-21 (annotated)

Committer:
Wolfgang Betz
Date:
Mon Nov 21 09:41:37 2016 +0100
Revision:
31:a4d8072139f2
Parent:
30:9c6dcfc47619
Child:
33:c226804be492
Enable standby mode

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Wolfgang Betz 0:4fb29d9ee571 1 /*** Mbed Includes ***/
Wolfgang Betz 0:4fb29d9ee571 2 #include "SimpleSpirit1.h"
Wolfgang Betz 3:0df38cfb1e53 3 #include "radio_spi.h"
Wolfgang Betz 0:4fb29d9ee571 4
Wolfgang Betz 4:07537ca85c66 5 #define SPIRIT_GPIO_IRQ (SPIRIT_GPIO_3)
Wolfgang Betz 3:0df38cfb1e53 6
Wolfgang Betz 26:45dae8d48029 7 static uint16_t last_state;
Wolfgang Betz 28:6a71e15d5272 8 #define SPIRIT1_STATUS() ((last_state = (uint16_t)refresh_state()) & SPIRIT1_STATE_STATEBITS)
Wolfgang Betz 28:6a71e15d5272 9
Wolfgang Betz 28:6a71e15d5272 10 #define XO_ON (0x1)
Wolfgang Betz 3:0df38cfb1e53 11
Wolfgang Betz 3:0df38cfb1e53 12 #define BUSYWAIT_UNTIL(cond, millisecs) \
Wolfgang Betz 16:25dc4b811ad3 13 do { \
Wolfgang Betz 16:25dc4b811ad3 14 uint32_t start = us_ticker_read(); \
Wolfgang Betz 16:25dc4b811ad3 15 while (!(cond) && ((us_ticker_read() - start) < ((uint32_t)millisecs)*1000U)); \
Wolfgang Betz 16:25dc4b811ad3 16 } while(0)
Wolfgang Betz 3:0df38cfb1e53 17
Wolfgang Betz 4:07537ca85c66 18 #define st_lib_spirit_irqs SpiritIrqs
Wolfgang Betz 4:07537ca85c66 19
Wolfgang Betz 25:2ec45788f28c 20 #define STATE_TIMEOUT (1000)
Wolfgang Betz 0:4fb29d9ee571 21
Wolfgang Betz 31:a4d8072139f2 22 // betzw: switching force & back from standby is on some devices quite unstable
Wolfgang Betz 31:a4d8072139f2 23 #define USE_STANDBY_STATE
Wolfgang Betz 28:6a71e15d5272 24
Wolfgang Betz 0:4fb29d9ee571 25 /*** Class Implementation ***/
Wolfgang Betz 3:0df38cfb1e53 26 /** Static Class Variables **/
Wolfgang Betz 3:0df38cfb1e53 27 SimpleSpirit1 *SimpleSpirit1::_singleton = NULL;
Wolfgang Betz 3:0df38cfb1e53 28
Wolfgang Betz 3:0df38cfb1e53 29 /** Constructor **/
Wolfgang Betz 0:4fb29d9ee571 30 SimpleSpirit1::SimpleSpirit1(PinName mosi, PinName miso, PinName sclk,
Wolfgang Betz 16:25dc4b811ad3 31 PinName irq, PinName cs, PinName sdn,
Wolfgang Betz 16:25dc4b811ad3 32 PinName led) :
Wolfgang Betz 16:25dc4b811ad3 33 _spi(mosi, miso, sclk),
Wolfgang Betz 16:25dc4b811ad3 34 _irq(irq),
Wolfgang Betz 16:25dc4b811ad3 35 _chip_select(cs),
Wolfgang Betz 16:25dc4b811ad3 36 _shut_down(sdn),
Wolfgang Betz 16:25dc4b811ad3 37 _led(led),
Wolfgang Betz 16:25dc4b811ad3 38 _current_irq_callback(),
Wolfgang Betz 16:25dc4b811ad3 39 _rx_receiving_timeout()
Wolfgang Betz 0:4fb29d9ee571 40 {
Wolfgang Betz 9:3db68ab23070 41 }
Wolfgang Betz 9:3db68ab23070 42
Wolfgang Betz 9:3db68ab23070 43 /** Init Function **/
Wolfgang Betz 9:3db68ab23070 44 void SimpleSpirit1::init() {
Wolfgang Betz 16:25dc4b811ad3 45 /* reset irq disable counter and irq callback & disable irq */
Wolfgang Betz 3:0df38cfb1e53 46 _nr_of_irq_disables = 0;
Wolfgang Betz 16:25dc4b811ad3 47 disable_spirit_irq();
Wolfgang Betz 0:4fb29d9ee571 48
Wolfgang Betz 16:25dc4b811ad3 49 /* unselect chip */
Wolfgang Betz 16:25dc4b811ad3 50 chip_unselect();
Wolfgang Betz 0:4fb29d9ee571 51
Wolfgang Betz 16:25dc4b811ad3 52 /* configure spi */
Wolfgang Betz 16:25dc4b811ad3 53 _spi.format(8, 0); /* 8-bit, mode = 0, [order = SPI_MSB] only available in mbed3 */
Wolfgang Betz 27:e68ffb6ac223 54 _spi.frequency(1000000); // 1MHz // betzw - NOTE: higher frequencies lead to instability of Spirit1
Wolfgang Betz 3:0df38cfb1e53 55
Wolfgang Betz 16:25dc4b811ad3 56 /* install irq handler */
Wolfgang Betz 16:25dc4b811ad3 57 _irq.mode(PullUp);
Wolfgang Betz 16:25dc4b811ad3 58 _irq.fall(Callback<void()>(this, &SimpleSpirit1::IrqHandler));
Wolfgang Betz 5:c9c5bc673c64 59
Wolfgang Betz 16:25dc4b811ad3 60 /* init cube vars */
Wolfgang Betz 16:25dc4b811ad3 61 spirit_on = OFF;
Wolfgang Betz 16:25dc4b811ad3 62 last_rssi = 0 ; //MGR
Wolfgang Betz 30:9c6dcfc47619 63 last_sqi = 0 ; //MGR
Wolfgang Betz 0:4fb29d9ee571 64
Wolfgang Betz 16:25dc4b811ad3 65 /* set frequencies */
Wolfgang Betz 16:25dc4b811ad3 66 radio_set_xtal_freq(XTAL_FREQUENCY);
Wolfgang Betz 16:25dc4b811ad3 67 mgmt_set_freq_base((uint32_t)BASE_FREQUENCY);
Wolfgang Betz 0:4fb29d9ee571 68
Wolfgang Betz 16:25dc4b811ad3 69 /* restart board */
Wolfgang Betz 16:25dc4b811ad3 70 enter_shutdown();
Wolfgang Betz 16:25dc4b811ad3 71 exit_shutdown();
Wolfgang Betz 0:4fb29d9ee571 72
Wolfgang Betz 16:25dc4b811ad3 73 /* soft core reset */
Wolfgang Betz 16:25dc4b811ad3 74 cmd_strobe(SPIRIT1_STROBE_SRES);
Wolfgang Betz 15:852b92eed64a 75
Wolfgang Betz 16:25dc4b811ad3 76 /* Configures the SPIRIT1 radio part */
Wolfgang Betz 16:25dc4b811ad3 77 SRadioInit x_radio_init = {
Wolfgang Betz 16:25dc4b811ad3 78 XTAL_OFFSET_PPM,
Wolfgang Betz 16:25dc4b811ad3 79 (uint32_t)BASE_FREQUENCY,
Wolfgang Betz 16:25dc4b811ad3 80 (uint32_t)CHANNEL_SPACE,
Wolfgang Betz 16:25dc4b811ad3 81 CHANNEL_NUMBER,
Wolfgang Betz 16:25dc4b811ad3 82 MODULATION_SELECT,
Wolfgang Betz 16:25dc4b811ad3 83 DATARATE,
Wolfgang Betz 16:25dc4b811ad3 84 (uint32_t)FREQ_DEVIATION,
Wolfgang Betz 16:25dc4b811ad3 85 (uint32_t)BANDWIDTH
Wolfgang Betz 16:25dc4b811ad3 86 };
Wolfgang Betz 16:25dc4b811ad3 87 radio_init(&x_radio_init);
Wolfgang Betz 16:25dc4b811ad3 88 radio_set_pa_level_dbm(0,POWER_DBM);
Wolfgang Betz 16:25dc4b811ad3 89 radio_set_pa_level_max_index(0);
Wolfgang Betz 0:4fb29d9ee571 90
Wolfgang Betz 16:25dc4b811ad3 91 /* Configures the SPIRIT1 packet handler part*/
Wolfgang Betz 16:25dc4b811ad3 92 PktBasicInit x_basic_init = {
Wolfgang Betz 16:25dc4b811ad3 93 PREAMBLE_LENGTH,
Wolfgang Betz 16:25dc4b811ad3 94 SYNC_LENGTH,
Wolfgang Betz 16:25dc4b811ad3 95 SYNC_WORD,
Wolfgang Betz 16:25dc4b811ad3 96 LENGTH_TYPE,
Wolfgang Betz 16:25dc4b811ad3 97 LENGTH_WIDTH,
Wolfgang Betz 16:25dc4b811ad3 98 CRC_MODE,
Wolfgang Betz 16:25dc4b811ad3 99 CONTROL_LENGTH,
Wolfgang Betz 16:25dc4b811ad3 100 EN_ADDRESS,
Wolfgang Betz 16:25dc4b811ad3 101 EN_FEC,
Wolfgang Betz 16:25dc4b811ad3 102 EN_WHITENING
Wolfgang Betz 16:25dc4b811ad3 103 };
Wolfgang Betz 16:25dc4b811ad3 104 pkt_basic_init(&x_basic_init);
Wolfgang Betz 0:4fb29d9ee571 105
Wolfgang Betz 16:25dc4b811ad3 106 /* Enable the following interrupt sources, routed to GPIO */
Wolfgang Betz 16:25dc4b811ad3 107 irq_de_init(NULL);
Wolfgang Betz 16:25dc4b811ad3 108 irq_clear_status();
Wolfgang Betz 16:25dc4b811ad3 109 irq_set_status(TX_DATA_SENT, S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 110 irq_set_status(RX_DATA_READY,S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 111 irq_set_status(RX_DATA_DISC, S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 112 irq_set_status(TX_FIFO_ERROR, S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 113 irq_set_status(RX_FIFO_ERROR, S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 114 irq_set_status(RX_FIFO_ALMOST_FULL, S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 115 irq_set_status(VALID_SYNC, S_ENABLE);
Wolfgang Betz 0:4fb29d9ee571 116
Wolfgang Betz 16:25dc4b811ad3 117 /* Configure Spirit1 */
Wolfgang Betz 28:6a71e15d5272 118 radio_persistent_rx(S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 119 qi_set_sqi_threshold(SQI_TH_0);
Wolfgang Betz 16:25dc4b811ad3 120 qi_sqi_check(S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 121 qi_set_rssi_threshold_dbm(CCA_THRESHOLD);
Wolfgang Betz 16:25dc4b811ad3 122 timer_set_rx_timeout_stop_condition(SQI_ABOVE_THRESHOLD);
Wolfgang Betz 16:25dc4b811ad3 123 timer_set_infinite_rx_timeout();
Wolfgang Betz 16:25dc4b811ad3 124 radio_afc_freeze_on_sync(S_ENABLE);
Wolfgang Betz 29:fe1b113f71d0 125 calibration_rco(S_ENABLE);
Wolfgang Betz 0:4fb29d9ee571 126
Wolfgang Betz 16:25dc4b811ad3 127 spirit_on = OFF;
Wolfgang Betz 16:25dc4b811ad3 128 CLEAR_TXBUF();
Wolfgang Betz 16:25dc4b811ad3 129 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 130 _spirit_tx_started = false;
Wolfgang Betz 16:25dc4b811ad3 131 _spirit_rx_err = false;
Wolfgang Betz 16:25dc4b811ad3 132 _is_receiving = false;
Wolfgang Betz 0:4fb29d9ee571 133
Wolfgang Betz 16:25dc4b811ad3 134 /* Configure the radio to route the IRQ signal to its GPIO 3 */
Wolfgang Betz 16:25dc4b811ad3 135 SGpioInit x_gpio_init = {
Wolfgang Betz 16:25dc4b811ad3 136 SPIRIT_GPIO_IRQ,
Wolfgang Betz 16:25dc4b811ad3 137 SPIRIT_GPIO_MODE_DIGITAL_OUTPUT_LP,
Wolfgang Betz 16:25dc4b811ad3 138 SPIRIT_GPIO_DIG_OUT_IRQ
Wolfgang Betz 16:25dc4b811ad3 139 };
Wolfgang Betz 16:25dc4b811ad3 140 spirit_gpio_init(&x_gpio_init);
Wolfgang Betz 18:d6f789f6f4c9 141
Wolfgang Betz 23:4192649f35da 142 /* Setup CSMA/CA */
Wolfgang Betz 23:4192649f35da 143 CsmaInit x_csma_init = {
Wolfgang Betz 29:fe1b113f71d0 144 S_ENABLE, // enable persistent mode
Wolfgang Betz 23:4192649f35da 145 TBIT_TIME_64, // Tcca time
Wolfgang Betz 23:4192649f35da 146 TCCA_TIME_3, // Lcca length
Wolfgang Betz 23:4192649f35da 147 3, // max nr of backoffs (<8)
Wolfgang Betz 23:4192649f35da 148 1, // BU counter seed
Wolfgang Betz 23:4192649f35da 149 8 // BU prescaler
Wolfgang Betz 23:4192649f35da 150 };
Wolfgang Betz 23:4192649f35da 151 csma_ca_init(&x_csma_init);
Wolfgang Betz 23:4192649f35da 152
Wolfgang Betz 30:9c6dcfc47619 153 #ifdef RX_FIFO_THR_AO_CSMA_WA
Wolfgang Betz 18:d6f789f6f4c9 154 linear_fifo_set_almost_full_thr_rx(SPIRIT_MAX_FIFO_LEN-(MAX_PACKET_LEN+1));
Wolfgang Betz 18:d6f789f6f4c9 155 #endif
Wolfgang Betz 25:2ec45788f28c 156
Wolfgang Betz 28:6a71e15d5272 157 #ifdef USE_STANDBY_STATE
Wolfgang Betz 25:2ec45788f28c 158 /* Puts the SPIRIT1 in STANDBY mode (125us -> rx/tx) */
Wolfgang Betz 25:2ec45788f28c 159 cmd_strobe(SPIRIT1_STROBE_STANDBY);
Wolfgang Betz 28:6a71e15d5272 160 #endif // USE_STANDBY_STATE
Wolfgang Betz 0:4fb29d9ee571 161 }
Wolfgang Betz 3:0df38cfb1e53 162
Wolfgang Betz 6:f5d01793bf86 163 int SimpleSpirit1::send(const void *payload, unsigned int payload_len) {
Wolfgang Betz 5:c9c5bc673c64 164 /* Checks if the payload length is supported */
Wolfgang Betz 5:c9c5bc673c64 165 if(payload_len > MAX_PACKET_LEN) {
Wolfgang Betz 5:c9c5bc673c64 166 return RADIO_TX_ERR;
Wolfgang Betz 5:c9c5bc673c64 167 }
Wolfgang Betz 5:c9c5bc673c64 168
Wolfgang Betz 28:6a71e15d5272 169 disable_spirit_irq();
Wolfgang Betz 28:6a71e15d5272 170
Wolfgang Betz 28:6a71e15d5272 171 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_RX, STATE_TIMEOUT);
Wolfgang Betz 25:2ec45788f28c 172 #ifndef NDEBUG
Wolfgang Betz 28:6a71e15d5272 173 if((last_state & SPIRIT1_STATE_STATEBITS) != SPIRIT1_STATE_RX) {
Wolfgang Betz 27:e68ffb6ac223 174 debug("\n\rAssert failed in: %s (%d): state=%x\n\r", __func__, __LINE__, last_state>>1);
Wolfgang Betz 26:45dae8d48029 175 }
Wolfgang Betz 25:2ec45788f28c 176 #endif
Wolfgang Betz 25:2ec45788f28c 177
Wolfgang Betz 5:c9c5bc673c64 178 /* Reset State to Ready */
Wolfgang Betz 5:c9c5bc673c64 179 set_ready_state();
Wolfgang Betz 5:c9c5bc673c64 180
Wolfgang Betz 5:c9c5bc673c64 181 cmd_strobe(SPIRIT1_STROBE_FTX); // flush TX FIFO buffer
Wolfgang Betz 25:2ec45788f28c 182
Wolfgang Betz 22:9165bd73c61e 183 #ifndef NDEBUG
Wolfgang Betz 27:e68ffb6ac223 184 debug_if(!(linear_fifo_read_num_elements_tx_fifo() == 0), "\n\rAssert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 22:9165bd73c61e 185 #endif
Wolfgang Betz 5:c9c5bc673c64 186
Wolfgang Betz 5:c9c5bc673c64 187 pkt_basic_set_payload_length(payload_len); // set desired payload len
Wolfgang Betz 26:45dae8d48029 188
Wolfgang Betz 30:9c6dcfc47619 189 #ifdef RX_FIFO_THR_AO_CSMA_WA
Wolfgang Betz 30:9c6dcfc47619 190 // betzw - TODO: enabling CSMA/CA seems to be incompatible with TX FIFO usage (to be investigated)
Wolfgang Betz 23:4192649f35da 191 csma_ca_state(S_ENABLE); // enable CSMA/CA
Wolfgang Betz 26:45dae8d48029 192 #endif
Wolfgang Betz 26:45dae8d48029 193
Wolfgang Betz 5:c9c5bc673c64 194 int i = 0;
Wolfgang Betz 5:c9c5bc673c64 195 int remaining = payload_len;
Wolfgang Betz 26:45dae8d48029 196 const uint8_t *buffer = (const uint8_t*)payload;
Wolfgang Betz 28:6a71e15d5272 197 bool tx_triggered = false;
Wolfgang Betz 5:c9c5bc673c64 198 do {
Wolfgang Betz 5:c9c5bc673c64 199 uint8_t fifo_available = SPIRIT_MAX_FIFO_LEN - linear_fifo_read_num_elements_tx_fifo();
Wolfgang Betz 5:c9c5bc673c64 200 uint8_t to_send = (remaining > fifo_available) ? fifo_available : remaining;
Wolfgang Betz 5:c9c5bc673c64 201
Wolfgang Betz 5:c9c5bc673c64 202 /* Fill FIFO Buffer */
Wolfgang Betz 26:45dae8d48029 203 if(to_send > 0) {
Wolfgang Betz 26:45dae8d48029 204 spi_write_linear_fifo(to_send, (uint8_t*)&buffer[i]);
Wolfgang Betz 5:c9c5bc673c64 205 }
Wolfgang Betz 5:c9c5bc673c64 206
Wolfgang Betz 28:6a71e15d5272 207 if(!tx_triggered) {
Wolfgang Betz 28:6a71e15d5272 208 cmd_strobe(SPIRIT1_STROBE_TX);
Wolfgang Betz 28:6a71e15d5272 209 tx_triggered = true;
Wolfgang Betz 28:6a71e15d5272 210 }
Wolfgang Betz 28:6a71e15d5272 211
Wolfgang Betz 5:c9c5bc673c64 212 i += to_send;
Wolfgang Betz 5:c9c5bc673c64 213 remaining -= to_send;
Wolfgang Betz 5:c9c5bc673c64 214 } while(remaining != 0);
Wolfgang Betz 5:c9c5bc673c64 215
Wolfgang Betz 7:e90fa8f6bc6c 216 _spirit_tx_started = true;
Wolfgang Betz 7:e90fa8f6bc6c 217
Wolfgang Betz 7:e90fa8f6bc6c 218 enable_spirit_irq();
Wolfgang Betz 7:e90fa8f6bc6c 219
Wolfgang Betz 28:6a71e15d5272 220 BUSYWAIT_UNTIL(!_spirit_tx_started, STATE_TIMEOUT);
Wolfgang Betz 30:9c6dcfc47619 221 #ifdef HEAVY_DEBUG
Wolfgang Betz 30:9c6dcfc47619 222 debug("\n\r%s (%d): state=%x, _spirit_tx_started=%d\n\r", __func__, __LINE__, SPIRIT1_STATUS()>>1, _spirit_tx_started);
Wolfgang Betz 23:4192649f35da 223 #endif
Wolfgang Betz 5:c9c5bc673c64 224
Wolfgang Betz 28:6a71e15d5272 225 csma_ca_state(S_DISABLE); // disable CSMA/CA
Wolfgang Betz 28:6a71e15d5272 226 cmd_strobe(SPIRIT1_STROBE_RX); // Return to RX state
Wolfgang Betz 28:6a71e15d5272 227
Wolfgang Betz 5:c9c5bc673c64 228 return RADIO_TX_OK;
Wolfgang Betz 5:c9c5bc673c64 229 }
Wolfgang Betz 5:c9c5bc673c64 230
Wolfgang Betz 3:0df38cfb1e53 231 /** Set Ready State **/
Wolfgang Betz 3:0df38cfb1e53 232 void SimpleSpirit1::set_ready_state(void) {
Wolfgang Betz 25:2ec45788f28c 233 uint16_t state;
Wolfgang Betz 25:2ec45788f28c 234
Wolfgang Betz 16:25dc4b811ad3 235 disable_spirit_irq();
Wolfgang Betz 3:0df38cfb1e53 236
Wolfgang Betz 30:9c6dcfc47619 237 _spirit_tx_started = false;
Wolfgang Betz 16:25dc4b811ad3 238 _is_receiving = false;
Wolfgang Betz 30:9c6dcfc47619 239 _spirit_rx_err = false;
Wolfgang Betz 16:25dc4b811ad3 240 stop_rx_timeout();
Wolfgang Betz 12:b8056eda4028 241
Wolfgang Betz 30:9c6dcfc47619 242 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 30:9c6dcfc47619 243 CLEAR_RXBUF();
Wolfgang Betz 30:9c6dcfc47619 244 CLEAR_TXBUF();
Wolfgang Betz 30:9c6dcfc47619 245
Wolfgang Betz 25:2ec45788f28c 246 state = SPIRIT1_STATUS();
Wolfgang Betz 25:2ec45788f28c 247 if(state == SPIRIT1_STATE_STANDBY) {
Wolfgang Betz 16:25dc4b811ad3 248 cmd_strobe(SPIRIT1_STROBE_READY);
Wolfgang Betz 25:2ec45788f28c 249 } else if(state == SPIRIT1_STATE_RX) {
Wolfgang Betz 16:25dc4b811ad3 250 cmd_strobe(SPIRIT1_STROBE_SABORT);
Wolfgang Betz 25:2ec45788f28c 251 } else if(state != SPIRIT1_STATE_READY) {
Wolfgang Betz 25:2ec45788f28c 252 #ifndef NDEBUG
Wolfgang Betz 27:e68ffb6ac223 253 debug("\n\rAssert failed in: %s (%d): state=%x\n\r", __func__, __LINE__, state>>1);
Wolfgang Betz 25:2ec45788f28c 254 #endif
Wolfgang Betz 16:25dc4b811ad3 255 }
Wolfgang Betz 25:2ec45788f28c 256
Wolfgang Betz 28:6a71e15d5272 257 BUSYWAIT_UNTIL((SPIRIT1_STATUS() == SPIRIT1_STATE_READY) && ((last_state & XO_ON) == XO_ON), STATE_TIMEOUT);
Wolfgang Betz 28:6a71e15d5272 258 if(last_state != (SPIRIT1_STATE_READY | XO_ON)) {
Wolfgang Betz 28:6a71e15d5272 259 error("\n\rSpirit1: failed to become ready (%x) => pls. reset!\n\r", last_state);
Wolfgang Betz 25:2ec45788f28c 260 enable_spirit_irq();
Wolfgang Betz 25:2ec45788f28c 261 return;
Wolfgang Betz 25:2ec45788f28c 262 }
Wolfgang Betz 25:2ec45788f28c 263
Wolfgang Betz 16:25dc4b811ad3 264 irq_clear_status();
Wolfgang Betz 3:0df38cfb1e53 265
Wolfgang Betz 16:25dc4b811ad3 266 enable_spirit_irq();
Wolfgang Betz 3:0df38cfb1e53 267 }
Wolfgang Betz 3:0df38cfb1e53 268
Wolfgang Betz 4:07537ca85c66 269 int SimpleSpirit1::off(void) {
Wolfgang Betz 16:25dc4b811ad3 270 if(spirit_on == ON) {
Wolfgang Betz 16:25dc4b811ad3 271 /* Disables the mcu to get IRQ from the SPIRIT1 */
Wolfgang Betz 16:25dc4b811ad3 272 disable_spirit_irq();
Wolfgang Betz 3:0df38cfb1e53 273
Wolfgang Betz 16:25dc4b811ad3 274 /* first stop rx/tx */
Wolfgang Betz 25:2ec45788f28c 275 set_ready_state();
Wolfgang Betz 3:0df38cfb1e53 276
Wolfgang Betz 28:6a71e15d5272 277 #ifdef USE_STANDBY_STATE
Wolfgang Betz 16:25dc4b811ad3 278 /* Puts the SPIRIT1 in STANDBY */
Wolfgang Betz 16:25dc4b811ad3 279 cmd_strobe(SPIRIT1_STROBE_STANDBY);
Wolfgang Betz 25:2ec45788f28c 280 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_STANDBY, STATE_TIMEOUT);
Wolfgang Betz 28:6a71e15d5272 281 if((last_state & SPIRIT1_STATE_STATEBITS) != SPIRIT1_STATE_STANDBY) {
Wolfgang Betz 26:45dae8d48029 282 error("\n\rSpirit1: failed to enter standby (%x)\n\r", last_state>>1);
Wolfgang Betz 16:25dc4b811ad3 283 return 1;
Wolfgang Betz 16:25dc4b811ad3 284 }
Wolfgang Betz 28:6a71e15d5272 285 #endif // USE_STANDBY_STATE
Wolfgang Betz 3:0df38cfb1e53 286
Wolfgang Betz 16:25dc4b811ad3 287 spirit_on = OFF;
Wolfgang Betz 16:25dc4b811ad3 288 _nr_of_irq_disables = 1;
Wolfgang Betz 16:25dc4b811ad3 289 }
Wolfgang Betz 16:25dc4b811ad3 290 return 0;
Wolfgang Betz 3:0df38cfb1e53 291 }
Wolfgang Betz 3:0df38cfb1e53 292
Wolfgang Betz 4:07537ca85c66 293 int SimpleSpirit1::on(void) {
Wolfgang Betz 16:25dc4b811ad3 294 if(spirit_on == OFF) {
Wolfgang Betz 25:2ec45788f28c 295 set_ready_state();
Wolfgang Betz 25:2ec45788f28c 296
Wolfgang Betz 25:2ec45788f28c 297 /* now we go to Rx */
Wolfgang Betz 25:2ec45788f28c 298 cmd_strobe(SPIRIT1_STROBE_RX);
Wolfgang Betz 25:2ec45788f28c 299
Wolfgang Betz 25:2ec45788f28c 300 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_RX, STATE_TIMEOUT);
Wolfgang Betz 28:6a71e15d5272 301 if((last_state & SPIRIT1_STATE_STATEBITS) != SPIRIT1_STATE_RX) {
Wolfgang Betz 26:45dae8d48029 302 error("\n\rSpirit1: failed to enter rx (%x) => retry\n\r", last_state>>1);
Wolfgang Betz 16:25dc4b811ad3 303 }
Wolfgang Betz 3:0df38cfb1e53 304
Wolfgang Betz 16:25dc4b811ad3 305 /* Enables the mcu to get IRQ from the SPIRIT1 */
Wolfgang Betz 16:25dc4b811ad3 306 spirit_on = ON;
Wolfgang Betz 22:9165bd73c61e 307 #ifndef NDEBUG
Wolfgang Betz 27:e68ffb6ac223 308 debug_if(!(_nr_of_irq_disables == 1), "\n\rAssert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 22:9165bd73c61e 309 #endif
Wolfgang Betz 16:25dc4b811ad3 310 enable_spirit_irq();
Wolfgang Betz 16:25dc4b811ad3 311 }
Wolfgang Betz 3:0df38cfb1e53 312
Wolfgang Betz 25:2ec45788f28c 313 #ifndef NDEBUG
Wolfgang Betz 26:45dae8d48029 314 if(SPIRIT1_STATUS() != SPIRIT1_STATE_RX) {
Wolfgang Betz 27:e68ffb6ac223 315 debug("\n\rAssert failed in: %s (%d): state=%x\n\r", __func__, __LINE__, last_state>>1);
Wolfgang Betz 26:45dae8d48029 316 }
Wolfgang Betz 25:2ec45788f28c 317 #endif
Wolfgang Betz 25:2ec45788f28c 318
Wolfgang Betz 16:25dc4b811ad3 319 return 0;
Wolfgang Betz 3:0df38cfb1e53 320 }
Wolfgang Betz 3:0df38cfb1e53 321
Wolfgang Betz 25:2ec45788f28c 322 uint8_t SimpleSpirit1::refresh_state(void) {
Wolfgang Betz 25:2ec45788f28c 323 uint8_t mcstate;
Wolfgang Betz 3:0df38cfb1e53 324
Wolfgang Betz 25:2ec45788f28c 325 SpiritSpiReadRegisters(MC_STATE0_BASE, 1, &mcstate);
Wolfgang Betz 3:0df38cfb1e53 326
Wolfgang Betz 16:25dc4b811ad3 327 return mcstate;
Wolfgang Betz 3:0df38cfb1e53 328 }
Wolfgang Betz 3:0df38cfb1e53 329
Wolfgang Betz 6:f5d01793bf86 330 int SimpleSpirit1::read(void *buf, unsigned int bufsize)
Wolfgang Betz 4:07537ca85c66 331 {
Wolfgang Betz 16:25dc4b811ad3 332 disable_spirit_irq();
Wolfgang Betz 6:f5d01793bf86 333
Wolfgang Betz 16:25dc4b811ad3 334 /* Checks if the RX buffer is empty */
Wolfgang Betz 16:25dc4b811ad3 335 if(IS_RXBUF_EMPTY()) {
Wolfgang Betz 25:2ec45788f28c 336 set_ready_state();
Wolfgang Betz 25:2ec45788f28c 337
Wolfgang Betz 16:25dc4b811ad3 338 cmd_strobe(SPIRIT1_STROBE_RX);
Wolfgang Betz 25:2ec45788f28c 339 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_RX, STATE_TIMEOUT);
Wolfgang Betz 16:25dc4b811ad3 340 enable_spirit_irq();
Wolfgang Betz 16:25dc4b811ad3 341 return 0;
Wolfgang Betz 16:25dc4b811ad3 342 }
Wolfgang Betz 4:07537ca85c66 343
Wolfgang Betz 16:25dc4b811ad3 344 if(bufsize < spirit_rx_len) {
Wolfgang Betz 16:25dc4b811ad3 345 enable_spirit_irq();
Wolfgang Betz 6:f5d01793bf86 346
Wolfgang Betz 16:25dc4b811ad3 347 /* If buf has the correct size */
Wolfgang Betz 22:9165bd73c61e 348 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 349 debug("\n\rTOO SMALL BUF\n\r");
Wolfgang Betz 22:9165bd73c61e 350 #endif
Wolfgang Betz 16:25dc4b811ad3 351 return 0;
Wolfgang Betz 16:25dc4b811ad3 352 } else {
Wolfgang Betz 16:25dc4b811ad3 353 /* Copies the packet received */
Wolfgang Betz 16:25dc4b811ad3 354 memcpy(buf, spirit_rx_buf, spirit_rx_len);
Wolfgang Betz 4:07537ca85c66 355
Wolfgang Betz 16:25dc4b811ad3 356 bufsize = spirit_rx_len;
Wolfgang Betz 16:25dc4b811ad3 357 CLEAR_RXBUF();
Wolfgang Betz 4:07537ca85c66 358
Wolfgang Betz 16:25dc4b811ad3 359 enable_spirit_irq();
Wolfgang Betz 6:f5d01793bf86 360
Wolfgang Betz 16:25dc4b811ad3 361 return bufsize;
Wolfgang Betz 16:25dc4b811ad3 362 }
Wolfgang Betz 4:07537ca85c66 363
Wolfgang Betz 4:07537ca85c66 364 }
Wolfgang Betz 4:07537ca85c66 365
Wolfgang Betz 4:07537ca85c66 366 int SimpleSpirit1::channel_clear(void)
Wolfgang Betz 4:07537ca85c66 367 {
Wolfgang Betz 16:25dc4b811ad3 368 float rssi_value;
Wolfgang Betz 16:25dc4b811ad3 369 /* Local variable used to memorize the SPIRIT1 state */
Wolfgang Betz 16:25dc4b811ad3 370 uint8_t spirit_state = ON;
Wolfgang Betz 4:07537ca85c66 371
Wolfgang Betz 16:25dc4b811ad3 372 if(spirit_on == OFF) {
Wolfgang Betz 16:25dc4b811ad3 373 /* Wakes up the SPIRIT1 */
Wolfgang Betz 16:25dc4b811ad3 374 on();
Wolfgang Betz 16:25dc4b811ad3 375 spirit_state = OFF;
Wolfgang Betz 16:25dc4b811ad3 376 }
Wolfgang Betz 4:07537ca85c66 377
Wolfgang Betz 25:2ec45788f28c 378 #ifndef NDEBUG
Wolfgang Betz 26:45dae8d48029 379 if(SPIRIT1_STATUS() != SPIRIT1_STATE_RX) {
Wolfgang Betz 27:e68ffb6ac223 380 debug("\n\rAssert failed in: %s (%d): state=%x\n\r", __func__, __LINE__, last_state>>1);
Wolfgang Betz 26:45dae8d48029 381 }
Wolfgang Betz 25:2ec45788f28c 382 #endif
Wolfgang Betz 25:2ec45788f28c 383
Wolfgang Betz 16:25dc4b811ad3 384 disable_spirit_irq();
Wolfgang Betz 7:e90fa8f6bc6c 385
Wolfgang Betz 16:25dc4b811ad3 386 /* Reset State to Ready */
Wolfgang Betz 16:25dc4b811ad3 387 set_ready_state();
Wolfgang Betz 4:07537ca85c66 388
Wolfgang Betz 16:25dc4b811ad3 389 /* Stores the RSSI value */
Wolfgang Betz 16:25dc4b811ad3 390 rssi_value = qi_get_rssi_dbm();
Wolfgang Betz 4:07537ca85c66 391
Wolfgang Betz 16:25dc4b811ad3 392 enable_spirit_irq();
Wolfgang Betz 7:e90fa8f6bc6c 393
Wolfgang Betz 16:25dc4b811ad3 394 /* Puts the SPIRIT1 in its previous state */
Wolfgang Betz 16:25dc4b811ad3 395 if(spirit_state==OFF) {
Wolfgang Betz 16:25dc4b811ad3 396 off();
Wolfgang Betz 25:2ec45788f28c 397 #ifndef NDEBUG
Wolfgang Betz 28:6a71e15d5272 398 #ifdef USE_STANDBY_STATE
Wolfgang Betz 26:45dae8d48029 399 if(SPIRIT1_STATUS() != SPIRIT1_STATE_STANDBY) {
Wolfgang Betz 28:6a71e15d5272 400 #else
Wolfgang Betz 28:6a71e15d5272 401 if(SPIRIT1_STATUS() != SPIRIT1_STATE_READY) {
Wolfgang Betz 28:6a71e15d5272 402 #endif
Wolfgang Betz 27:e68ffb6ac223 403 debug("\n\rAssert failed in: %s (%d): state=%x\n\r", __func__, __LINE__, last_state>>1);
Wolfgang Betz 26:45dae8d48029 404 }
Wolfgang Betz 25:2ec45788f28c 405 #endif
Wolfgang Betz 16:25dc4b811ad3 406 } else {
Wolfgang Betz 16:25dc4b811ad3 407 disable_spirit_irq();
Wolfgang Betz 25:2ec45788f28c 408
Wolfgang Betz 25:2ec45788f28c 409 set_ready_state();
Wolfgang Betz 25:2ec45788f28c 410
Wolfgang Betz 16:25dc4b811ad3 411 cmd_strobe(SPIRIT1_STROBE_RX);
Wolfgang Betz 25:2ec45788f28c 412 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_RX, STATE_TIMEOUT);
Wolfgang Betz 28:6a71e15d5272 413 if((last_state & SPIRIT1_STATE_STATEBITS) != SPIRIT1_STATE_RX) {
Wolfgang Betz 26:45dae8d48029 414 error("\n\rSpirit1: (#2) failed to enter rx (%x) => retry\n\r", last_state>>1);
Wolfgang Betz 25:2ec45788f28c 415 }
Wolfgang Betz 25:2ec45788f28c 416
Wolfgang Betz 16:25dc4b811ad3 417 enable_spirit_irq();
Wolfgang Betz 25:2ec45788f28c 418
Wolfgang Betz 25:2ec45788f28c 419 #ifndef NDEBUG
Wolfgang Betz 26:45dae8d48029 420 if(SPIRIT1_STATUS() != SPIRIT1_STATE_RX) {
Wolfgang Betz 27:e68ffb6ac223 421 debug("\n\rAssert failed in: %s (%d): state=%x\n\r", __func__, __LINE__, last_state>>1);
Wolfgang Betz 26:45dae8d48029 422 }
Wolfgang Betz 25:2ec45788f28c 423 #endif
Wolfgang Betz 16:25dc4b811ad3 424 }
Wolfgang Betz 4:07537ca85c66 425
Wolfgang Betz 16:25dc4b811ad3 426 /* Checks the RSSI value with the threshold */
Wolfgang Betz 16:25dc4b811ad3 427 if(rssi_value<CCA_THRESHOLD) {
Wolfgang Betz 16:25dc4b811ad3 428 return 0;
Wolfgang Betz 16:25dc4b811ad3 429 } else {
Wolfgang Betz 16:25dc4b811ad3 430 return 1;
Wolfgang Betz 16:25dc4b811ad3 431 }
Wolfgang Betz 4:07537ca85c66 432 }
Wolfgang Betz 4:07537ca85c66 433
Wolfgang Betz 7:e90fa8f6bc6c 434 int SimpleSpirit1::get_pending_packet(void)
Wolfgang Betz 4:07537ca85c66 435 {
Wolfgang Betz 16:25dc4b811ad3 436 return !IS_RXBUF_EMPTY();
Wolfgang Betz 4:07537ca85c66 437 }
Wolfgang Betz 4:07537ca85c66 438
Wolfgang Betz 5:c9c5bc673c64 439 /** Spirit Irq Callback **/
Wolfgang Betz 5:c9c5bc673c64 440 void SimpleSpirit1::IrqHandler() {
Wolfgang Betz 16:25dc4b811ad3 441 st_lib_spirit_irqs x_irq_status;
Wolfgang Betz 4:07537ca85c66 442
Wolfgang Betz 16:25dc4b811ad3 443 /* get interrupt source from radio */
Wolfgang Betz 16:25dc4b811ad3 444 irq_get_status(&x_irq_status);
Wolfgang Betz 4:07537ca85c66 445
Wolfgang Betz 16:25dc4b811ad3 446 /* Reception errors */
Wolfgang Betz 26:45dae8d48029 447 if((x_irq_status.IRQ_RX_FIFO_ERROR) || (x_irq_status.IRQ_RX_DATA_DISC)) {
Wolfgang Betz 28:6a71e15d5272 448 #ifdef DEBUG_IRQ
Wolfgang Betz 28:6a71e15d5272 449 uint32_t *tmp = (uint32_t*)&x_irq_status;
Wolfgang Betz 28:6a71e15d5272 450 debug("\n\r%s (%d): irq=%x", __func__, __LINE__, *tmp);
Wolfgang Betz 23:4192649f35da 451 #endif
Wolfgang Betz 16:25dc4b811ad3 452 _spirit_rx_err = true;
Wolfgang Betz 16:25dc4b811ad3 453 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 454 CLEAR_RXBUF();
Wolfgang Betz 6:f5d01793bf86 455 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 456 if(_spirit_tx_started) {
Wolfgang Betz 16:25dc4b811ad3 457 _spirit_tx_started = false;
Wolfgang Betz 16:25dc4b811ad3 458 CLEAR_TXBUF();
Wolfgang Betz 16:25dc4b811ad3 459 /* call user callback */
Wolfgang Betz 16:25dc4b811ad3 460 if(_current_irq_callback) {
Wolfgang Betz 16:25dc4b811ad3 461 _current_irq_callback(TX_ERR);
Wolfgang Betz 6:f5d01793bf86 462 }
Wolfgang Betz 6:f5d01793bf86 463 }
Wolfgang Betz 16:25dc4b811ad3 464 }
Wolfgang Betz 16:25dc4b811ad3 465
Wolfgang Betz 16:25dc4b811ad3 466 /* Transmission error */
Wolfgang Betz 16:25dc4b811ad3 467 if(x_irq_status.IRQ_TX_FIFO_ERROR) {
Wolfgang Betz 28:6a71e15d5272 468 #ifdef DEBUG_IRQ
Wolfgang Betz 28:6a71e15d5272 469 uint32_t *tmp = (uint32_t*)&x_irq_status;
Wolfgang Betz 28:6a71e15d5272 470 debug("\n\r%s (%d): irq=%x", __func__, __LINE__, *tmp);
Wolfgang Betz 22:9165bd73c61e 471 #endif
Wolfgang Betz 23:4192649f35da 472 csma_ca_state(S_DISABLE); // disable CSMA/CA
Wolfgang Betz 16:25dc4b811ad3 473 cmd_strobe(SPIRIT1_STROBE_FTX);
Wolfgang Betz 16:25dc4b811ad3 474 if(_spirit_tx_started) {
Wolfgang Betz 16:25dc4b811ad3 475 _spirit_tx_started = false;
Wolfgang Betz 16:25dc4b811ad3 476 CLEAR_TXBUF();
Wolfgang Betz 16:25dc4b811ad3 477 /* call user callback */
Wolfgang Betz 16:25dc4b811ad3 478 if(_current_irq_callback) {
Wolfgang Betz 16:25dc4b811ad3 479 _current_irq_callback(TX_ERR);
Wolfgang Betz 16:25dc4b811ad3 480 }
Wolfgang Betz 16:25dc4b811ad3 481 }
Wolfgang Betz 16:25dc4b811ad3 482 }
Wolfgang Betz 16:25dc4b811ad3 483
Wolfgang Betz 16:25dc4b811ad3 484 /* The IRQ_TX_DATA_SENT notifies the packet received. Puts the SPIRIT1 in RX */
Wolfgang Betz 16:25dc4b811ad3 485 if(x_irq_status.IRQ_TX_DATA_SENT) {
Wolfgang Betz 28:6a71e15d5272 486 #ifdef DEBUG_IRQ
Wolfgang Betz 27:e68ffb6ac223 487 debug_if(!_spirit_tx_started, "\n\rAssert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 22:9165bd73c61e 488 #endif
Wolfgang Betz 5:c9c5bc673c64 489
Wolfgang Betz 28:6a71e15d5272 490 _spirit_rx_err = false;
Wolfgang Betz 28:6a71e15d5272 491 _spirit_tx_started = false;
Wolfgang Betz 16:25dc4b811ad3 492 CLEAR_TXBUF();
Wolfgang Betz 16:25dc4b811ad3 493 CLEAR_RXBUF();
Wolfgang Betz 4:07537ca85c66 494
Wolfgang Betz 6:f5d01793bf86 495 /* call user callback */
Wolfgang Betz 6:f5d01793bf86 496 if(_current_irq_callback) {
Wolfgang Betz 23:4192649f35da 497 _current_irq_callback(TX_DONE);
Wolfgang Betz 6:f5d01793bf86 498 }
Wolfgang Betz 16:25dc4b811ad3 499 }
Wolfgang Betz 15:852b92eed64a 500
Wolfgang Betz 16:25dc4b811ad3 501 /* RX FIFO almost full */
Wolfgang Betz 16:25dc4b811ad3 502 if(x_irq_status.IRQ_RX_FIFO_ALMOST_FULL) {
Wolfgang Betz 16:25dc4b811ad3 503 if(_spirit_rx_err) {
Wolfgang Betz 16:25dc4b811ad3 504 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 505 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 506 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 507 } else {
Wolfgang Betz 16:25dc4b811ad3 508 uint8_t fifo_available = linear_fifo_read_num_elements_rx_fifo();
Wolfgang Betz 16:25dc4b811ad3 509 unsigned int remaining = MAX_PACKET_LEN - _spirit_rx_pos;
Wolfgang Betz 16:25dc4b811ad3 510 if(fifo_available > remaining) {
Wolfgang Betz 16:25dc4b811ad3 511 _spirit_rx_err = true;
Wolfgang Betz 16:25dc4b811ad3 512 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 513 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 514 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 515 } else {
Wolfgang Betz 16:25dc4b811ad3 516 spi_read_linear_fifo(fifo_available, &spirit_rx_buf[_spirit_rx_pos]);
Wolfgang Betz 16:25dc4b811ad3 517 _spirit_rx_pos += fifo_available;
Wolfgang Betz 16:25dc4b811ad3 518 if(!_is_receiving) {
Wolfgang Betz 16:25dc4b811ad3 519 _is_receiving = true;
Wolfgang Betz 16:25dc4b811ad3 520 start_rx_timeout();
Wolfgang Betz 16:25dc4b811ad3 521 }
Wolfgang Betz 16:25dc4b811ad3 522 }
Wolfgang Betz 16:25dc4b811ad3 523 }
Wolfgang Betz 16:25dc4b811ad3 524 }
Wolfgang Betz 15:852b92eed64a 525
Wolfgang Betz 16:25dc4b811ad3 526 /* The IRQ_RX_DATA_READY notifies a new packet arrived */
Wolfgang Betz 16:25dc4b811ad3 527 if(x_irq_status.IRQ_RX_DATA_READY) {
Wolfgang Betz 16:25dc4b811ad3 528 _is_receiving = false; // Finished receiving
Wolfgang Betz 16:25dc4b811ad3 529 stop_rx_timeout();
Wolfgang Betz 15:852b92eed64a 530
Wolfgang Betz 16:25dc4b811ad3 531 if(_spirit_rx_err) {
Wolfgang Betz 16:25dc4b811ad3 532 _spirit_rx_err = false;
Wolfgang Betz 16:25dc4b811ad3 533 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 534 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 535 } else {
Wolfgang Betz 16:25dc4b811ad3 536 spirit_rx_len = pkt_basic_get_received_pkt_length();
Wolfgang Betz 16:25dc4b811ad3 537
Wolfgang Betz 28:6a71e15d5272 538 #ifdef DEBUG_IRQ
Wolfgang Betz 27:e68ffb6ac223 539 debug_if(!(spirit_rx_len <= MAX_PACKET_LEN), "\n\rAssert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 22:9165bd73c61e 540 #endif
Wolfgang Betz 16:25dc4b811ad3 541
Wolfgang Betz 16:25dc4b811ad3 542 for(; _spirit_rx_pos < spirit_rx_len;) {
Wolfgang Betz 25:2ec45788f28c 543 uint8_t to_receive = spirit_rx_len - _spirit_rx_pos;
Wolfgang Betz 16:25dc4b811ad3 544 if(to_receive > 0) {
Wolfgang Betz 16:25dc4b811ad3 545 spi_read_linear_fifo(to_receive, &spirit_rx_buf[_spirit_rx_pos]);
Wolfgang Betz 16:25dc4b811ad3 546 _spirit_rx_pos += to_receive;
Wolfgang Betz 16:25dc4b811ad3 547 }
Wolfgang Betz 16:25dc4b811ad3 548 }
Wolfgang Betz 16:25dc4b811ad3 549
Wolfgang Betz 16:25dc4b811ad3 550 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 551
Wolfgang Betz 16:25dc4b811ad3 552 last_rssi = qi_get_rssi(); //MGR
Wolfgang Betz 30:9c6dcfc47619 553 last_sqi = qi_get_sqi(); //MGR
Wolfgang Betz 16:25dc4b811ad3 554
Wolfgang Betz 16:25dc4b811ad3 555 /* call user callback */
Wolfgang Betz 16:25dc4b811ad3 556 if(_current_irq_callback) {
Wolfgang Betz 23:4192649f35da 557 _current_irq_callback(RX_DONE);
Wolfgang Betz 16:25dc4b811ad3 558 }
Wolfgang Betz 16:25dc4b811ad3 559 }
Wolfgang Betz 16:25dc4b811ad3 560 }
Wolfgang Betz 23:4192649f35da 561
Wolfgang Betz 28:6a71e15d5272 562 /* The IRQ_VALID_SYNC is used to notify a new packet is coming */
Wolfgang Betz 28:6a71e15d5272 563 if(x_irq_status.IRQ_VALID_SYNC) {
Wolfgang Betz 28:6a71e15d5272 564 _is_receiving = true;
Wolfgang Betz 28:6a71e15d5272 565 _spirit_rx_err = false;
Wolfgang Betz 28:6a71e15d5272 566 CLEAR_RXBUF();
Wolfgang Betz 28:6a71e15d5272 567 #ifdef DEBUG_IRQ
Wolfgang Betz 28:6a71e15d5272 568 debug_if(_spirit_tx_started, "\n\rAssert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 28:6a71e15d5272 569 #endif
Wolfgang Betz 28:6a71e15d5272 570 start_rx_timeout();
Wolfgang Betz 23:4192649f35da 571 }
Wolfgang Betz 4:07537ca85c66 572 }