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@24:03e351bfc9c9, 2016-11-10 (annotated)

Committer:
Wolfgang Betz
Date:
Thu Nov 10 15:25:59 2016 +0100
Revision:
24:03e351bfc9c9
Parent:
23:4192649f35da
Child:
25:2ec45788f28c
Relax bootup times

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 4:07537ca85c66 7 #define SPIRIT1_STATUS() (arch_refresh_status() & SPIRIT1_STATE_STATEBITS)
Wolfgang Betz 3:0df38cfb1e53 8
Wolfgang Betz 3:0df38cfb1e53 9 #define BUSYWAIT_UNTIL(cond, millisecs) \
Wolfgang Betz 16:25dc4b811ad3 10 do { \
Wolfgang Betz 16:25dc4b811ad3 11 uint32_t start = us_ticker_read(); \
Wolfgang Betz 16:25dc4b811ad3 12 while (!(cond) && ((us_ticker_read() - start) < ((uint32_t)millisecs)*1000U)); \
Wolfgang Betz 16:25dc4b811ad3 13 } while(0)
Wolfgang Betz 3:0df38cfb1e53 14
Wolfgang Betz 4:07537ca85c66 15 extern volatile SpiritStatus g_xStatus;
Wolfgang Betz 4:07537ca85c66 16 #define st_lib_g_x_status (g_xStatus)
Wolfgang Betz 4:07537ca85c66 17
Wolfgang Betz 4:07537ca85c66 18 #define st_lib_spirit_irqs SpiritIrqs
Wolfgang Betz 4:07537ca85c66 19
Wolfgang Betz 0:4fb29d9ee571 20
Wolfgang Betz 0:4fb29d9ee571 21 /*** Class Implementation ***/
Wolfgang Betz 3:0df38cfb1e53 22 /** Static Class Variables **/
Wolfgang Betz 3:0df38cfb1e53 23 SimpleSpirit1 *SimpleSpirit1::_singleton = NULL;
Wolfgang Betz 3:0df38cfb1e53 24
Wolfgang Betz 3:0df38cfb1e53 25 /** Constructor **/
Wolfgang Betz 0:4fb29d9ee571 26 SimpleSpirit1::SimpleSpirit1(PinName mosi, PinName miso, PinName sclk,
Wolfgang Betz 16:25dc4b811ad3 27 PinName irq, PinName cs, PinName sdn,
Wolfgang Betz 16:25dc4b811ad3 28 PinName led) :
Wolfgang Betz 16:25dc4b811ad3 29 _spi(mosi, miso, sclk),
Wolfgang Betz 16:25dc4b811ad3 30 _irq(irq),
Wolfgang Betz 16:25dc4b811ad3 31 _chip_select(cs),
Wolfgang Betz 16:25dc4b811ad3 32 _shut_down(sdn),
Wolfgang Betz 16:25dc4b811ad3 33 _led(led),
Wolfgang Betz 16:25dc4b811ad3 34 _current_irq_callback(),
Wolfgang Betz 16:25dc4b811ad3 35 _rx_receiving_timeout()
Wolfgang Betz 0:4fb29d9ee571 36 {
Wolfgang Betz 9:3db68ab23070 37 }
Wolfgang Betz 9:3db68ab23070 38
Wolfgang Betz 9:3db68ab23070 39 /** Init Function **/
Wolfgang Betz 9:3db68ab23070 40 void SimpleSpirit1::init() {
Wolfgang Betz 16:25dc4b811ad3 41 /* reset irq disable counter and irq callback & disable irq */
Wolfgang Betz 3:0df38cfb1e53 42 _nr_of_irq_disables = 0;
Wolfgang Betz 16:25dc4b811ad3 43 disable_spirit_irq();
Wolfgang Betz 0:4fb29d9ee571 44
Wolfgang Betz 16:25dc4b811ad3 45 /* unselect chip */
Wolfgang Betz 16:25dc4b811ad3 46 chip_unselect();
Wolfgang Betz 0:4fb29d9ee571 47
Wolfgang Betz 16:25dc4b811ad3 48 /* configure spi */
Wolfgang Betz 16:25dc4b811ad3 49 _spi.format(8, 0); /* 8-bit, mode = 0, [order = SPI_MSB] only available in mbed3 */
Wolfgang Betz 16:25dc4b811ad3 50 _spi.frequency(5000000); // 5MHz
Wolfgang Betz 3:0df38cfb1e53 51
Wolfgang Betz 16:25dc4b811ad3 52 /* install irq handler */
Wolfgang Betz 16:25dc4b811ad3 53 _irq.mode(PullUp);
Wolfgang Betz 16:25dc4b811ad3 54 _irq.fall(Callback<void()>(this, &SimpleSpirit1::IrqHandler));
Wolfgang Betz 5:c9c5bc673c64 55
Wolfgang Betz 16:25dc4b811ad3 56 /* init cube vars */
Wolfgang Betz 16:25dc4b811ad3 57 spirit_on = OFF;
Wolfgang Betz 16:25dc4b811ad3 58 last_rssi = 0 ; //MGR
Wolfgang Betz 16:25dc4b811ad3 59 last_lqi = 0 ; //MGR
Wolfgang Betz 0:4fb29d9ee571 60
Wolfgang Betz 16:25dc4b811ad3 61 /* set frequencies */
Wolfgang Betz 16:25dc4b811ad3 62 radio_set_xtal_freq(XTAL_FREQUENCY);
Wolfgang Betz 16:25dc4b811ad3 63 mgmt_set_freq_base((uint32_t)BASE_FREQUENCY);
Wolfgang Betz 0:4fb29d9ee571 64
Wolfgang Betz 16:25dc4b811ad3 65 /* restart board */
Wolfgang Betz 16:25dc4b811ad3 66 enter_shutdown();
Wolfgang Betz 16:25dc4b811ad3 67 exit_shutdown();
Wolfgang Betz 0:4fb29d9ee571 68
Wolfgang Betz 16:25dc4b811ad3 69 /* soft core reset */
Wolfgang Betz 16:25dc4b811ad3 70 cmd_strobe(SPIRIT1_STROBE_SRES);
Wolfgang Betz 15:852b92eed64a 71
Wolfgang Betz 16:25dc4b811ad3 72 /* Configures the SPIRIT1 radio part */
Wolfgang Betz 16:25dc4b811ad3 73 SRadioInit x_radio_init = {
Wolfgang Betz 16:25dc4b811ad3 74 XTAL_OFFSET_PPM,
Wolfgang Betz 16:25dc4b811ad3 75 (uint32_t)BASE_FREQUENCY,
Wolfgang Betz 16:25dc4b811ad3 76 (uint32_t)CHANNEL_SPACE,
Wolfgang Betz 16:25dc4b811ad3 77 CHANNEL_NUMBER,
Wolfgang Betz 16:25dc4b811ad3 78 MODULATION_SELECT,
Wolfgang Betz 16:25dc4b811ad3 79 DATARATE,
Wolfgang Betz 16:25dc4b811ad3 80 (uint32_t)FREQ_DEVIATION,
Wolfgang Betz 16:25dc4b811ad3 81 (uint32_t)BANDWIDTH
Wolfgang Betz 16:25dc4b811ad3 82 };
Wolfgang Betz 16:25dc4b811ad3 83 radio_init(&x_radio_init);
Wolfgang Betz 16:25dc4b811ad3 84 radio_set_pa_level_dbm(0,POWER_DBM);
Wolfgang Betz 16:25dc4b811ad3 85 radio_set_pa_level_max_index(0);
Wolfgang Betz 0:4fb29d9ee571 86
Wolfgang Betz 16:25dc4b811ad3 87 /* Configures the SPIRIT1 packet handler part*/
Wolfgang Betz 16:25dc4b811ad3 88 PktBasicInit x_basic_init = {
Wolfgang Betz 16:25dc4b811ad3 89 PREAMBLE_LENGTH,
Wolfgang Betz 16:25dc4b811ad3 90 SYNC_LENGTH,
Wolfgang Betz 16:25dc4b811ad3 91 SYNC_WORD,
Wolfgang Betz 16:25dc4b811ad3 92 LENGTH_TYPE,
Wolfgang Betz 16:25dc4b811ad3 93 LENGTH_WIDTH,
Wolfgang Betz 16:25dc4b811ad3 94 CRC_MODE,
Wolfgang Betz 16:25dc4b811ad3 95 CONTROL_LENGTH,
Wolfgang Betz 16:25dc4b811ad3 96 EN_ADDRESS,
Wolfgang Betz 16:25dc4b811ad3 97 EN_FEC,
Wolfgang Betz 16:25dc4b811ad3 98 EN_WHITENING
Wolfgang Betz 16:25dc4b811ad3 99 };
Wolfgang Betz 16:25dc4b811ad3 100 pkt_basic_init(&x_basic_init);
Wolfgang Betz 0:4fb29d9ee571 101
Wolfgang Betz 16:25dc4b811ad3 102 /* Enable the following interrupt sources, routed to GPIO */
Wolfgang Betz 16:25dc4b811ad3 103 irq_de_init(NULL);
Wolfgang Betz 16:25dc4b811ad3 104 irq_clear_status();
Wolfgang Betz 16:25dc4b811ad3 105 irq_set_status(TX_DATA_SENT, S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 106 irq_set_status(RX_DATA_READY,S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 107 irq_set_status(RX_DATA_DISC, S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 108 irq_set_status(TX_FIFO_ERROR, S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 109 irq_set_status(RX_FIFO_ERROR, S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 110 irq_set_status(RX_FIFO_ALMOST_FULL, S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 111 irq_set_status(VALID_SYNC, S_ENABLE);
Wolfgang Betz 23:4192649f35da 112 irq_set_status(MAX_BO_CCA_REACH, S_ENABLE);
Wolfgang Betz 0:4fb29d9ee571 113
Wolfgang Betz 16:25dc4b811ad3 114 /* Configure Spirit1 */
Wolfgang Betz 16:25dc4b811ad3 115 radio_persisten_rx(S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 116 qi_set_sqi_threshold(SQI_TH_0);
Wolfgang Betz 16:25dc4b811ad3 117 qi_sqi_check(S_ENABLE);
Wolfgang Betz 16:25dc4b811ad3 118 qi_set_rssi_threshold_dbm(CCA_THRESHOLD);
Wolfgang Betz 16:25dc4b811ad3 119 timer_set_rx_timeout_stop_condition(SQI_ABOVE_THRESHOLD);
Wolfgang Betz 16:25dc4b811ad3 120 timer_set_infinite_rx_timeout();
Wolfgang Betz 16:25dc4b811ad3 121 radio_afc_freeze_on_sync(S_ENABLE);
Wolfgang Betz 0:4fb29d9ee571 122
Wolfgang Betz 16:25dc4b811ad3 123 /* Puts the SPIRIT1 in STANDBY mode (125us -> rx/tx) */
Wolfgang Betz 16:25dc4b811ad3 124 cmd_strobe(SPIRIT1_STROBE_STANDBY);
Wolfgang Betz 16:25dc4b811ad3 125 spirit_on = OFF;
Wolfgang Betz 16:25dc4b811ad3 126 CLEAR_TXBUF();
Wolfgang Betz 16:25dc4b811ad3 127 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 128 _spirit_tx_started = false;
Wolfgang Betz 16:25dc4b811ad3 129 _spirit_rx_err = false;
Wolfgang Betz 16:25dc4b811ad3 130 _is_receiving = false;
Wolfgang Betz 0:4fb29d9ee571 131
Wolfgang Betz 16:25dc4b811ad3 132 /* Configure the radio to route the IRQ signal to its GPIO 3 */
Wolfgang Betz 16:25dc4b811ad3 133 SGpioInit x_gpio_init = {
Wolfgang Betz 16:25dc4b811ad3 134 SPIRIT_GPIO_IRQ,
Wolfgang Betz 16:25dc4b811ad3 135 SPIRIT_GPIO_MODE_DIGITAL_OUTPUT_LP,
Wolfgang Betz 16:25dc4b811ad3 136 SPIRIT_GPIO_DIG_OUT_IRQ
Wolfgang Betz 16:25dc4b811ad3 137 };
Wolfgang Betz 16:25dc4b811ad3 138 spirit_gpio_init(&x_gpio_init);
Wolfgang Betz 18:d6f789f6f4c9 139
Wolfgang Betz 23:4192649f35da 140 /* Setup CSMA/CA */
Wolfgang Betz 23:4192649f35da 141 CsmaInit x_csma_init = {
Wolfgang Betz 23:4192649f35da 142 S_DISABLE, // no persistent mode
Wolfgang Betz 23:4192649f35da 143 TBIT_TIME_64, // Tcca time
Wolfgang Betz 23:4192649f35da 144 TCCA_TIME_3, // Lcca length
Wolfgang Betz 23:4192649f35da 145 3, // max nr of backoffs (<8)
Wolfgang Betz 23:4192649f35da 146 1, // BU counter seed
Wolfgang Betz 23:4192649f35da 147 8 // BU prescaler
Wolfgang Betz 23:4192649f35da 148 };
Wolfgang Betz 23:4192649f35da 149 csma_ca_init(&x_csma_init);
Wolfgang Betz 23:4192649f35da 150
Wolfgang Betz 18:d6f789f6f4c9 151 #ifdef RX_FIFO_THR_WA
Wolfgang Betz 18:d6f789f6f4c9 152 linear_fifo_set_almost_full_thr_rx(SPIRIT_MAX_FIFO_LEN-(MAX_PACKET_LEN+1));
Wolfgang Betz 18:d6f789f6f4c9 153 #endif
Wolfgang Betz 0:4fb29d9ee571 154 }
Wolfgang Betz 3:0df38cfb1e53 155
Wolfgang Betz 6:f5d01793bf86 156 int SimpleSpirit1::send(const void *payload, unsigned int payload_len) {
Wolfgang Betz 5:c9c5bc673c64 157 /* Checks if the payload length is supported */
Wolfgang Betz 5:c9c5bc673c64 158 if(payload_len > MAX_PACKET_LEN) {
Wolfgang Betz 5:c9c5bc673c64 159 return RADIO_TX_ERR;
Wolfgang Betz 5:c9c5bc673c64 160 }
Wolfgang Betz 5:c9c5bc673c64 161
Wolfgang Betz 5:c9c5bc673c64 162 disable_spirit_irq();
Wolfgang Betz 5:c9c5bc673c64 163
Wolfgang Betz 5:c9c5bc673c64 164 /* Reset State to Ready */
Wolfgang Betz 5:c9c5bc673c64 165 set_ready_state();
Wolfgang Betz 5:c9c5bc673c64 166
Wolfgang Betz 5:c9c5bc673c64 167 cmd_strobe(SPIRIT1_STROBE_FTX); // flush TX FIFO buffer
Wolfgang Betz 22:9165bd73c61e 168 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 169 debug_if(!(linear_fifo_read_num_elements_tx_fifo() == 0), "\n\rassert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 22:9165bd73c61e 170 #endif
Wolfgang Betz 5:c9c5bc673c64 171
Wolfgang Betz 5:c9c5bc673c64 172 pkt_basic_set_payload_length(payload_len); // set desired payload len
Wolfgang Betz 23:4192649f35da 173 csma_ca_state(S_ENABLE); // enable CSMA/CA
Wolfgang Betz 5:c9c5bc673c64 174
Wolfgang Betz 5:c9c5bc673c64 175 int i = 0;
Wolfgang Betz 5:c9c5bc673c64 176 int remaining = payload_len;
Wolfgang Betz 5:c9c5bc673c64 177 bool trigger_tx = true;
Wolfgang Betz 5:c9c5bc673c64 178 do {
Wolfgang Betz 5:c9c5bc673c64 179 uint8_t fifo_available = SPIRIT_MAX_FIFO_LEN - linear_fifo_read_num_elements_tx_fifo();
Wolfgang Betz 5:c9c5bc673c64 180 uint8_t to_send = (remaining > fifo_available) ? fifo_available : remaining;
Wolfgang Betz 5:c9c5bc673c64 181 const uint8_t *buffer = (const uint8_t*)payload;
Wolfgang Betz 5:c9c5bc673c64 182
Wolfgang Betz 5:c9c5bc673c64 183 /* Fill FIFO Buffer */
Wolfgang Betz 5:c9c5bc673c64 184 spi_write_linear_fifo(to_send, (uint8_t*)&buffer[i]);
Wolfgang Betz 5:c9c5bc673c64 185
Wolfgang Betz 5:c9c5bc673c64 186 /* Start Transmit FIFO Buffer */
Wolfgang Betz 5:c9c5bc673c64 187 if(trigger_tx) {
Wolfgang Betz 22:9165bd73c61e 188 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 189 debug_if(!(linear_fifo_read_num_elements_tx_fifo() == to_send), "\n\rassert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 22:9165bd73c61e 190 #endif
Wolfgang Betz 5:c9c5bc673c64 191 cmd_strobe(SPIRIT1_STROBE_TX);
Wolfgang Betz 5:c9c5bc673c64 192 trigger_tx = false;
Wolfgang Betz 5:c9c5bc673c64 193 }
Wolfgang Betz 5:c9c5bc673c64 194
Wolfgang Betz 5:c9c5bc673c64 195 i += to_send;
Wolfgang Betz 5:c9c5bc673c64 196 remaining -= to_send;
Wolfgang Betz 5:c9c5bc673c64 197 } while(remaining != 0);
Wolfgang Betz 5:c9c5bc673c64 198
Wolfgang Betz 7:e90fa8f6bc6c 199 _spirit_tx_started = true;
Wolfgang Betz 7:e90fa8f6bc6c 200
Wolfgang Betz 7:e90fa8f6bc6c 201 enable_spirit_irq();
Wolfgang Betz 7:e90fa8f6bc6c 202
Wolfgang Betz 5:c9c5bc673c64 203 BUSYWAIT_UNTIL(SPIRIT1_STATUS() != SPIRIT1_STATE_TX, 50);
Wolfgang Betz 23:4192649f35da 204 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 205 // debug_if(!(linear_fifo_read_num_elements_tx_fifo() == 0), "\n\rassert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 23:4192649f35da 206 #endif
Wolfgang Betz 5:c9c5bc673c64 207
Wolfgang Betz 5:c9c5bc673c64 208 return RADIO_TX_OK;
Wolfgang Betz 5:c9c5bc673c64 209 }
Wolfgang Betz 5:c9c5bc673c64 210
Wolfgang Betz 3:0df38cfb1e53 211 /** Set Ready State **/
Wolfgang Betz 3:0df38cfb1e53 212 void SimpleSpirit1::set_ready_state(void) {
Wolfgang Betz 16:25dc4b811ad3 213 disable_spirit_irq();
Wolfgang Betz 3:0df38cfb1e53 214
Wolfgang Betz 16:25dc4b811ad3 215 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 216 stop_rx_timeout();
Wolfgang Betz 12:b8056eda4028 217
Wolfgang Betz 16:25dc4b811ad3 218 if(SPIRIT1_STATUS() == SPIRIT1_STATE_STANDBY) {
Wolfgang Betz 16:25dc4b811ad3 219 cmd_strobe(SPIRIT1_STROBE_READY);
Wolfgang Betz 16:25dc4b811ad3 220 } else if(SPIRIT1_STATUS() == SPIRIT1_STATE_RX) {
Wolfgang Betz 16:25dc4b811ad3 221 cmd_strobe(SPIRIT1_STROBE_SABORT);
Wolfgang Betz 16:25dc4b811ad3 222 }
Wolfgang Betz 16:25dc4b811ad3 223 irq_clear_status();
Wolfgang Betz 3:0df38cfb1e53 224
Wolfgang Betz 16:25dc4b811ad3 225 enable_spirit_irq();
Wolfgang Betz 3:0df38cfb1e53 226 }
Wolfgang Betz 3:0df38cfb1e53 227
Wolfgang Betz 4:07537ca85c66 228 int SimpleSpirit1::off(void) {
Wolfgang Betz 16:25dc4b811ad3 229 if(spirit_on == ON) {
Wolfgang Betz 16:25dc4b811ad3 230 /* Disables the mcu to get IRQ from the SPIRIT1 */
Wolfgang Betz 16:25dc4b811ad3 231 disable_spirit_irq();
Wolfgang Betz 3:0df38cfb1e53 232
Wolfgang Betz 16:25dc4b811ad3 233 /* first stop rx/tx */
Wolfgang Betz 16:25dc4b811ad3 234 cmd_strobe(SPIRIT1_STROBE_SABORT);
Wolfgang Betz 3:0df38cfb1e53 235
Wolfgang Betz 16:25dc4b811ad3 236 /* Clear any pending irqs */
Wolfgang Betz 16:25dc4b811ad3 237 irq_clear_status();
Wolfgang Betz 3:0df38cfb1e53 238
Wolfgang Betz 24:03e351bfc9c9 239 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_READY, 3000);
Wolfgang Betz 16:25dc4b811ad3 240 if(SPIRIT1_STATUS() != SPIRIT1_STATE_READY) {
Wolfgang Betz 22:9165bd73c61e 241 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 242 debug("\n\rSpirit1: failed off->ready\n\r");
Wolfgang Betz 22:9165bd73c61e 243 #endif
Wolfgang Betz 16:25dc4b811ad3 244 return 1;
Wolfgang Betz 16:25dc4b811ad3 245 }
Wolfgang Betz 3:0df38cfb1e53 246
Wolfgang Betz 16:25dc4b811ad3 247 /* Puts the SPIRIT1 in STANDBY */
Wolfgang Betz 16:25dc4b811ad3 248 cmd_strobe(SPIRIT1_STROBE_STANDBY);
Wolfgang Betz 24:03e351bfc9c9 249 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_STANDBY, 3000);
Wolfgang Betz 16:25dc4b811ad3 250 if(SPIRIT1_STATUS() != SPIRIT1_STATE_STANDBY) {
Wolfgang Betz 22:9165bd73c61e 251 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 252 debug("\n\rSpirit1: failed off->standby\n\r");
Wolfgang Betz 22:9165bd73c61e 253 #endif
Wolfgang Betz 16:25dc4b811ad3 254 return 1;
Wolfgang Betz 16:25dc4b811ad3 255 }
Wolfgang Betz 3:0df38cfb1e53 256
Wolfgang Betz 16:25dc4b811ad3 257 spirit_on = OFF;
Wolfgang Betz 16:25dc4b811ad3 258 _nr_of_irq_disables = 1;
Wolfgang Betz 16:25dc4b811ad3 259 _spirit_tx_started = false;
Wolfgang Betz 16:25dc4b811ad3 260 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 261 stop_rx_timeout();
Wolfgang Betz 12:b8056eda4028 262
Wolfgang Betz 16:25dc4b811ad3 263 CLEAR_TXBUF();
Wolfgang Betz 16:25dc4b811ad3 264 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 265 }
Wolfgang Betz 16:25dc4b811ad3 266 return 0;
Wolfgang Betz 3:0df38cfb1e53 267 }
Wolfgang Betz 3:0df38cfb1e53 268
Wolfgang Betz 4:07537ca85c66 269 int SimpleSpirit1::on(void) {
Wolfgang Betz 16:25dc4b811ad3 270 cmd_strobe(SPIRIT1_STROBE_SABORT);
Wolfgang Betz 16:25dc4b811ad3 271 if(spirit_on == OFF) {
Wolfgang Betz 16:25dc4b811ad3 272 /* ensure we are in READY state as we go from there to Rx */
Wolfgang Betz 16:25dc4b811ad3 273 cmd_strobe(SPIRIT1_STROBE_READY);
Wolfgang Betz 24:03e351bfc9c9 274 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_READY, 3000);
Wolfgang Betz 16:25dc4b811ad3 275 if(SPIRIT1_STATUS() != SPIRIT1_STATE_READY) {
Wolfgang Betz 22:9165bd73c61e 276 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 277 debug("\n\rSpirit1: failed to turn on\n\r");
Wolfgang Betz 22:9165bd73c61e 278 #endif
Wolfgang Betz 22:9165bd73c61e 279 return 1;
Wolfgang Betz 16:25dc4b811ad3 280 }
Wolfgang Betz 3:0df38cfb1e53 281
Wolfgang Betz 16:25dc4b811ad3 282 /* now we go to Rx */
Wolfgang Betz 16:25dc4b811ad3 283 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 284 cmd_strobe(SPIRIT1_STROBE_RX);
Wolfgang Betz 24:03e351bfc9c9 285 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_RX, 3000);
Wolfgang Betz 16:25dc4b811ad3 286 if(SPIRIT1_STATUS() != SPIRIT1_STATE_RX) {
Wolfgang Betz 22:9165bd73c61e 287 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 288 debug("\n\rSpirit1: failed to enter rx\n\r");
Wolfgang Betz 22:9165bd73c61e 289 #endif
Wolfgang Betz 22:9165bd73c61e 290 return 1;
Wolfgang Betz 16:25dc4b811ad3 291 }
Wolfgang Betz 16:25dc4b811ad3 292 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 293 _spirit_rx_err = false;
Wolfgang Betz 16:25dc4b811ad3 294 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 295 stop_rx_timeout();
Wolfgang Betz 3:0df38cfb1e53 296
Wolfgang Betz 16:25dc4b811ad3 297 /* Enables the mcu to get IRQ from the SPIRIT1 */
Wolfgang Betz 16:25dc4b811ad3 298 spirit_on = ON;
Wolfgang Betz 22:9165bd73c61e 299 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 300 debug_if(!(_nr_of_irq_disables == 1), "\n\rassert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 22:9165bd73c61e 301 #endif
Wolfgang Betz 16:25dc4b811ad3 302 enable_spirit_irq();
Wolfgang Betz 16:25dc4b811ad3 303 }
Wolfgang Betz 3:0df38cfb1e53 304
Wolfgang Betz 16:25dc4b811ad3 305 return 0;
Wolfgang Betz 3:0df38cfb1e53 306 }
Wolfgang Betz 3:0df38cfb1e53 307
Wolfgang Betz 3:0df38cfb1e53 308 uint16_t SimpleSpirit1::arch_refresh_status(void) {
Wolfgang Betz 16:25dc4b811ad3 309 uint16_t mcstate;
Wolfgang Betz 16:25dc4b811ad3 310 uint8_t header[2];
Wolfgang Betz 16:25dc4b811ad3 311 header[0]=READ_HEADER;
Wolfgang Betz 16:25dc4b811ad3 312 header[1]=MC_STATE1_BASE;
Wolfgang Betz 3:0df38cfb1e53 313
Wolfgang Betz 16:25dc4b811ad3 314 /* Puts the SPI chip select low to start the transaction */
Wolfgang Betz 16:25dc4b811ad3 315 chip_sync_select();
Wolfgang Betz 3:0df38cfb1e53 316
Wolfgang Betz 16:25dc4b811ad3 317 /* Write the aHeader bytes and read the SPIRIT1 status bytes */
Wolfgang Betz 16:25dc4b811ad3 318 mcstate = _spi.write(header[0]);
Wolfgang Betz 16:25dc4b811ad3 319 mcstate = mcstate<<8;
Wolfgang Betz 3:0df38cfb1e53 320
Wolfgang Betz 16:25dc4b811ad3 321 /* Write the aHeader bytes and read the SPIRIT1 status bytes */
Wolfgang Betz 16:25dc4b811ad3 322 mcstate |= _spi.write(header[1]);
Wolfgang Betz 3:0df38cfb1e53 323
Wolfgang Betz 16:25dc4b811ad3 324 /* Puts the SPI chip select high to end the transaction */
Wolfgang Betz 16:25dc4b811ad3 325 chip_sync_unselect();
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 16:25dc4b811ad3 336 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 337 cmd_strobe(SPIRIT1_STROBE_SABORT);
Wolfgang Betz 16:25dc4b811ad3 338 cmd_strobe(SPIRIT1_STROBE_READY);
Wolfgang Betz 24:03e351bfc9c9 339 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_READY, 3000);
Wolfgang Betz 16:25dc4b811ad3 340 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 341 cmd_strobe(SPIRIT1_STROBE_RX);
Wolfgang Betz 24:03e351bfc9c9 342 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_RX, 3000);
Wolfgang Betz 16:25dc4b811ad3 343 _spirit_rx_err = false;
Wolfgang Betz 16:25dc4b811ad3 344 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 345 stop_rx_timeout();
Wolfgang Betz 16:25dc4b811ad3 346 enable_spirit_irq();
Wolfgang Betz 16:25dc4b811ad3 347 return 0;
Wolfgang Betz 16:25dc4b811ad3 348 }
Wolfgang Betz 4:07537ca85c66 349
Wolfgang Betz 16:25dc4b811ad3 350 if(bufsize < spirit_rx_len) {
Wolfgang Betz 16:25dc4b811ad3 351 enable_spirit_irq();
Wolfgang Betz 6:f5d01793bf86 352
Wolfgang Betz 16:25dc4b811ad3 353 /* If buf has the correct size */
Wolfgang Betz 22:9165bd73c61e 354 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 355 debug("\n\rTOO SMALL BUF\n\r");
Wolfgang Betz 22:9165bd73c61e 356 #endif
Wolfgang Betz 16:25dc4b811ad3 357 return 0;
Wolfgang Betz 16:25dc4b811ad3 358 } else {
Wolfgang Betz 16:25dc4b811ad3 359 /* Copies the packet received */
Wolfgang Betz 16:25dc4b811ad3 360 memcpy(buf, spirit_rx_buf, spirit_rx_len);
Wolfgang Betz 4:07537ca85c66 361
Wolfgang Betz 16:25dc4b811ad3 362 bufsize = spirit_rx_len;
Wolfgang Betz 16:25dc4b811ad3 363 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 364 stop_rx_timeout();
Wolfgang Betz 16:25dc4b811ad3 365 CLEAR_RXBUF();
Wolfgang Betz 4:07537ca85c66 366
Wolfgang Betz 16:25dc4b811ad3 367 enable_spirit_irq();
Wolfgang Betz 6:f5d01793bf86 368
Wolfgang Betz 16:25dc4b811ad3 369 return bufsize;
Wolfgang Betz 16:25dc4b811ad3 370 }
Wolfgang Betz 4:07537ca85c66 371
Wolfgang Betz 4:07537ca85c66 372 }
Wolfgang Betz 4:07537ca85c66 373
Wolfgang Betz 4:07537ca85c66 374 int SimpleSpirit1::channel_clear(void)
Wolfgang Betz 4:07537ca85c66 375 {
Wolfgang Betz 16:25dc4b811ad3 376 float rssi_value;
Wolfgang Betz 16:25dc4b811ad3 377 /* Local variable used to memorize the SPIRIT1 state */
Wolfgang Betz 16:25dc4b811ad3 378 uint8_t spirit_state = ON;
Wolfgang Betz 4:07537ca85c66 379
Wolfgang Betz 16:25dc4b811ad3 380 if(spirit_on == OFF) {
Wolfgang Betz 16:25dc4b811ad3 381 /* Wakes up the SPIRIT1 */
Wolfgang Betz 16:25dc4b811ad3 382 on();
Wolfgang Betz 16:25dc4b811ad3 383 spirit_state = OFF;
Wolfgang Betz 16:25dc4b811ad3 384 }
Wolfgang Betz 4:07537ca85c66 385
Wolfgang Betz 16:25dc4b811ad3 386 disable_spirit_irq();
Wolfgang Betz 7:e90fa8f6bc6c 387
Wolfgang Betz 16:25dc4b811ad3 388 /* Reset State to Ready */
Wolfgang Betz 16:25dc4b811ad3 389 set_ready_state();
Wolfgang Betz 16:25dc4b811ad3 390 {
Wolfgang Betz 16:25dc4b811ad3 391 uint32_t timeout = us_ticker_read() + 5000;
Wolfgang Betz 16:25dc4b811ad3 392 do {
Wolfgang Betz 16:25dc4b811ad3 393 mgmt_refresh_status();
Wolfgang Betz 16:25dc4b811ad3 394 } while((st_lib_g_x_status.MC_STATE != MC_STATE_READY) && (us_ticker_read() < timeout));
Wolfgang Betz 16:25dc4b811ad3 395 if(st_lib_g_x_status.MC_STATE != MC_STATE_READY) {
Wolfgang Betz 16:25dc4b811ad3 396 enable_spirit_irq();
Wolfgang Betz 24:03e351bfc9c9 397 #ifndef NDEBUG
Wolfgang Betz 24:03e351bfc9c9 398 debug("\n\rSpirit1: channel clear failed\n\r");
Wolfgang Betz 24:03e351bfc9c9 399 #endif
Wolfgang Betz 16:25dc4b811ad3 400 return 1;
Wolfgang Betz 16:25dc4b811ad3 401 }
Wolfgang Betz 16:25dc4b811ad3 402 }
Wolfgang Betz 4:07537ca85c66 403
Wolfgang Betz 16:25dc4b811ad3 404 /* Stores the RSSI value */
Wolfgang Betz 16:25dc4b811ad3 405 rssi_value = qi_get_rssi_dbm();
Wolfgang Betz 4:07537ca85c66 406
Wolfgang Betz 16:25dc4b811ad3 407 enable_spirit_irq();
Wolfgang Betz 7:e90fa8f6bc6c 408
Wolfgang Betz 16:25dc4b811ad3 409 /* Puts the SPIRIT1 in its previous state */
Wolfgang Betz 16:25dc4b811ad3 410 if(spirit_state==OFF) {
Wolfgang Betz 16:25dc4b811ad3 411 off();
Wolfgang Betz 16:25dc4b811ad3 412 } else {
Wolfgang Betz 16:25dc4b811ad3 413 disable_spirit_irq();
Wolfgang Betz 16:25dc4b811ad3 414 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 415 cmd_strobe(SPIRIT1_STROBE_RX);
Wolfgang Betz 22:9165bd73c61e 416 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_RX, 10);
Wolfgang Betz 16:25dc4b811ad3 417 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 418 _spirit_rx_err = false;
Wolfgang Betz 16:25dc4b811ad3 419 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 420 stop_rx_timeout();
Wolfgang Betz 16:25dc4b811ad3 421 enable_spirit_irq();
Wolfgang Betz 16:25dc4b811ad3 422 }
Wolfgang Betz 4:07537ca85c66 423
Wolfgang Betz 16:25dc4b811ad3 424 /* Checks the RSSI value with the threshold */
Wolfgang Betz 16:25dc4b811ad3 425 if(rssi_value<CCA_THRESHOLD) {
Wolfgang Betz 16:25dc4b811ad3 426 return 0;
Wolfgang Betz 16:25dc4b811ad3 427 } else {
Wolfgang Betz 16:25dc4b811ad3 428 return 1;
Wolfgang Betz 16:25dc4b811ad3 429 }
Wolfgang Betz 4:07537ca85c66 430 }
Wolfgang Betz 4:07537ca85c66 431
Wolfgang Betz 7:e90fa8f6bc6c 432 int SimpleSpirit1::get_pending_packet(void)
Wolfgang Betz 4:07537ca85c66 433 {
Wolfgang Betz 16:25dc4b811ad3 434 return !IS_RXBUF_EMPTY();
Wolfgang Betz 4:07537ca85c66 435 }
Wolfgang Betz 4:07537ca85c66 436
Wolfgang Betz 5:c9c5bc673c64 437 /** Spirit Irq Callback **/
Wolfgang Betz 5:c9c5bc673c64 438 void SimpleSpirit1::IrqHandler() {
Wolfgang Betz 16:25dc4b811ad3 439 st_lib_spirit_irqs x_irq_status;
Wolfgang Betz 4:07537ca85c66 440
Wolfgang Betz 16:25dc4b811ad3 441 /* get interrupt source from radio */
Wolfgang Betz 16:25dc4b811ad3 442 irq_get_status(&x_irq_status);
Wolfgang Betz 16:25dc4b811ad3 443 // betzw - WAS: irq_clear_status(); BUT already cleared by get status!
Wolfgang Betz 4:07537ca85c66 444
Wolfgang Betz 16:25dc4b811ad3 445 /* Reception errors */
Wolfgang Betz 16:25dc4b811ad3 446 if((x_irq_status.IRQ_RX_FIFO_ERROR) || (x_irq_status.IRQ_RX_DATA_DISC) || (x_irq_status.IRQ_RX_TIMEOUT)) {
Wolfgang Betz 23:4192649f35da 447 #ifndef NDEBUG
Wolfgang Betz 23:4192649f35da 448 debug("\n\r%s (%d)", __func__, __LINE__);
Wolfgang Betz 23:4192649f35da 449 #endif
Wolfgang Betz 16:25dc4b811ad3 450 _spirit_rx_err = true;
Wolfgang Betz 16:25dc4b811ad3 451 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 452 CLEAR_RXBUF();
Wolfgang Betz 6:f5d01793bf86 453 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 454 stop_rx_timeout();
Wolfgang Betz 16:25dc4b811ad3 455 if(_spirit_tx_started) {
Wolfgang Betz 16:25dc4b811ad3 456 _spirit_tx_started = false;
Wolfgang Betz 16:25dc4b811ad3 457 CLEAR_TXBUF();
Wolfgang Betz 16:25dc4b811ad3 458 /* call user callback */
Wolfgang Betz 16:25dc4b811ad3 459 if(_current_irq_callback) {
Wolfgang Betz 16:25dc4b811ad3 460 _current_irq_callback(TX_ERR);
Wolfgang Betz 6:f5d01793bf86 461 }
Wolfgang Betz 6:f5d01793bf86 462 }
Wolfgang Betz 16:25dc4b811ad3 463 }
Wolfgang Betz 16:25dc4b811ad3 464
Wolfgang Betz 16:25dc4b811ad3 465 /* Transmission error */
Wolfgang Betz 16:25dc4b811ad3 466 if(x_irq_status.IRQ_TX_FIFO_ERROR) {
Wolfgang Betz 22:9165bd73c61e 467 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 468 debug("\n\r%s (%d)", __func__, __LINE__);
Wolfgang Betz 22:9165bd73c61e 469 #endif
Wolfgang Betz 23:4192649f35da 470 csma_ca_state(S_DISABLE); // disable CSMA/CA
Wolfgang Betz 16:25dc4b811ad3 471 cmd_strobe(SPIRIT1_STROBE_FTX);
Wolfgang Betz 16:25dc4b811ad3 472 if(_spirit_tx_started) {
Wolfgang Betz 16:25dc4b811ad3 473 _spirit_tx_started = false;
Wolfgang Betz 16:25dc4b811ad3 474 CLEAR_TXBUF();
Wolfgang Betz 16:25dc4b811ad3 475 /* call user callback */
Wolfgang Betz 16:25dc4b811ad3 476 if(_current_irq_callback) {
Wolfgang Betz 16:25dc4b811ad3 477 _current_irq_callback(TX_ERR);
Wolfgang Betz 16:25dc4b811ad3 478 }
Wolfgang Betz 16:25dc4b811ad3 479 }
Wolfgang Betz 16:25dc4b811ad3 480 }
Wolfgang Betz 16:25dc4b811ad3 481
Wolfgang Betz 16:25dc4b811ad3 482 /* The IRQ_VALID_SYNC is used to notify a new packet is coming */
Wolfgang Betz 16:25dc4b811ad3 483 if(x_irq_status.IRQ_VALID_SYNC) {
Wolfgang Betz 16:25dc4b811ad3 484 _is_receiving = true;
Wolfgang Betz 16:25dc4b811ad3 485 _spirit_rx_err = false;
Wolfgang Betz 16:25dc4b811ad3 486 CLEAR_RXBUF();
Wolfgang Betz 22:9165bd73c61e 487 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 488 debug_if(_spirit_tx_started, "\n\rassert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 22:9165bd73c61e 489 #endif
Wolfgang Betz 16:25dc4b811ad3 490 start_rx_timeout();
Wolfgang Betz 16:25dc4b811ad3 491 }
Wolfgang Betz 16:25dc4b811ad3 492
Wolfgang Betz 16:25dc4b811ad3 493 /* The IRQ_TX_DATA_SENT notifies the packet received. Puts the SPIRIT1 in RX */
Wolfgang Betz 16:25dc4b811ad3 494 if(x_irq_status.IRQ_TX_DATA_SENT) {
Wolfgang Betz 22:9165bd73c61e 495 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 496 debug_if(!_spirit_tx_started, "\n\rassert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 22:9165bd73c61e 497 #endif
Wolfgang Betz 5:c9c5bc673c64 498
Wolfgang Betz 23:4192649f35da 499 csma_ca_state(S_DISABLE); // disable CSMA/CA
Wolfgang Betz 6:f5d01793bf86 500 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 501 cmd_strobe(SPIRIT1_STROBE_RX);
Wolfgang Betz 16:25dc4b811ad3 502 CLEAR_TXBUF();
Wolfgang Betz 16:25dc4b811ad3 503 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 504 _spirit_rx_err = false;
Wolfgang Betz 16:25dc4b811ad3 505 _spirit_tx_started = false;
Wolfgang Betz 4:07537ca85c66 506
Wolfgang Betz 6:f5d01793bf86 507 /* call user callback */
Wolfgang Betz 6:f5d01793bf86 508 if(_current_irq_callback) {
Wolfgang Betz 23:4192649f35da 509 _current_irq_callback(TX_DONE);
Wolfgang Betz 6:f5d01793bf86 510 }
Wolfgang Betz 16:25dc4b811ad3 511 }
Wolfgang Betz 15:852b92eed64a 512
Wolfgang Betz 16:25dc4b811ad3 513 /* RX FIFO almost full */
Wolfgang Betz 16:25dc4b811ad3 514 if(x_irq_status.IRQ_RX_FIFO_ALMOST_FULL) {
Wolfgang Betz 16:25dc4b811ad3 515 if(_spirit_rx_err) {
Wolfgang Betz 16:25dc4b811ad3 516 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 517 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 518 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 519 stop_rx_timeout();
Wolfgang Betz 16:25dc4b811ad3 520 } else {
Wolfgang Betz 16:25dc4b811ad3 521 uint8_t fifo_available = linear_fifo_read_num_elements_rx_fifo();
Wolfgang Betz 16:25dc4b811ad3 522 unsigned int remaining = MAX_PACKET_LEN - _spirit_rx_pos;
Wolfgang Betz 16:25dc4b811ad3 523 if(fifo_available > remaining) {
Wolfgang Betz 16:25dc4b811ad3 524 _spirit_rx_err = true;
Wolfgang Betz 16:25dc4b811ad3 525 _is_receiving = false;
Wolfgang Betz 16:25dc4b811ad3 526 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 527 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 528 stop_rx_timeout();
Wolfgang Betz 16:25dc4b811ad3 529 } else {
Wolfgang Betz 16:25dc4b811ad3 530 spi_read_linear_fifo(fifo_available, &spirit_rx_buf[_spirit_rx_pos]);
Wolfgang Betz 16:25dc4b811ad3 531 _spirit_rx_pos += fifo_available;
Wolfgang Betz 16:25dc4b811ad3 532 if(!_is_receiving) {
Wolfgang Betz 16:25dc4b811ad3 533 _is_receiving = true;
Wolfgang Betz 16:25dc4b811ad3 534 start_rx_timeout();
Wolfgang Betz 16:25dc4b811ad3 535 }
Wolfgang Betz 16:25dc4b811ad3 536 }
Wolfgang Betz 16:25dc4b811ad3 537 }
Wolfgang Betz 16:25dc4b811ad3 538 }
Wolfgang Betz 15:852b92eed64a 539
Wolfgang Betz 16:25dc4b811ad3 540 /* The IRQ_RX_DATA_READY notifies a new packet arrived */
Wolfgang Betz 16:25dc4b811ad3 541 if(x_irq_status.IRQ_RX_DATA_READY) {
Wolfgang Betz 16:25dc4b811ad3 542 _is_receiving = false; // Finished receiving
Wolfgang Betz 16:25dc4b811ad3 543 stop_rx_timeout();
Wolfgang Betz 15:852b92eed64a 544
Wolfgang Betz 16:25dc4b811ad3 545 if(_spirit_rx_err) {
Wolfgang Betz 16:25dc4b811ad3 546 _spirit_rx_err = false;
Wolfgang Betz 16:25dc4b811ad3 547 CLEAR_RXBUF();
Wolfgang Betz 16:25dc4b811ad3 548 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 549 } else {
Wolfgang Betz 16:25dc4b811ad3 550 spirit_rx_len = pkt_basic_get_received_pkt_length();
Wolfgang Betz 16:25dc4b811ad3 551 unsigned int remaining = 0;
Wolfgang Betz 16:25dc4b811ad3 552 // uint8_t fifo_available = 0; // betzw: optimized out in favor of a request less to SPIRIT device
Wolfgang Betz 16:25dc4b811ad3 553 uint8_t to_receive = 0;
Wolfgang Betz 16:25dc4b811ad3 554
Wolfgang Betz 22:9165bd73c61e 555 #ifndef NDEBUG
Wolfgang Betz 22:9165bd73c61e 556 debug_if(!(spirit_rx_len <= MAX_PACKET_LEN), "\n\rassert failed in: %s (%d)\n\r", __func__, __LINE__);
Wolfgang Betz 22:9165bd73c61e 557 #endif
Wolfgang Betz 16:25dc4b811ad3 558
Wolfgang Betz 16:25dc4b811ad3 559 for(; _spirit_rx_pos < spirit_rx_len;) {
Wolfgang Betz 16:25dc4b811ad3 560 remaining = spirit_rx_len - _spirit_rx_pos;
Wolfgang Betz 16:25dc4b811ad3 561 // fifo_available = linear_fifo_read_num_elements_rx_fifo(); // betzw: optimized out in favor of a request less to SPIRIT device
Wolfgang Betz 16:25dc4b811ad3 562 to_receive = remaining; // betzw - WAS: (remaining < fifo_available) ? remaining : fifo_available;
Wolfgang Betz 16:25dc4b811ad3 563 if(to_receive > 0) {
Wolfgang Betz 16:25dc4b811ad3 564 spi_read_linear_fifo(to_receive, &spirit_rx_buf[_spirit_rx_pos]);
Wolfgang Betz 16:25dc4b811ad3 565 _spirit_rx_pos += to_receive;
Wolfgang Betz 16:25dc4b811ad3 566 }
Wolfgang Betz 16:25dc4b811ad3 567 }
Wolfgang Betz 16:25dc4b811ad3 568
Wolfgang Betz 16:25dc4b811ad3 569 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 16:25dc4b811ad3 570
Wolfgang Betz 16:25dc4b811ad3 571 last_rssi = qi_get_rssi(); //MGR
Wolfgang Betz 16:25dc4b811ad3 572 last_lqi = qi_get_lqi(); //MGR
Wolfgang Betz 16:25dc4b811ad3 573
Wolfgang Betz 16:25dc4b811ad3 574 /* call user callback */
Wolfgang Betz 16:25dc4b811ad3 575 if(_current_irq_callback) {
Wolfgang Betz 23:4192649f35da 576 _current_irq_callback(RX_DONE);
Wolfgang Betz 16:25dc4b811ad3 577 }
Wolfgang Betz 16:25dc4b811ad3 578 }
Wolfgang Betz 16:25dc4b811ad3 579 }
Wolfgang Betz 23:4192649f35da 580
Wolfgang Betz 23:4192649f35da 581 /* Max number of back-off during CCA */
Wolfgang Betz 23:4192649f35da 582 if(x_irq_status.IRQ_MAX_BO_CCA_REACH) {
Wolfgang Betz 23:4192649f35da 583 #ifndef NDEBUG
Wolfgang Betz 23:4192649f35da 584 debug("\n\r%s (%d)", __func__, __LINE__);
Wolfgang Betz 23:4192649f35da 585 #endif
Wolfgang Betz 23:4192649f35da 586 csma_ca_state(S_DISABLE); // disable CSMA/CA
Wolfgang Betz 23:4192649f35da 587 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 23:4192649f35da 588 cmd_strobe(SPIRIT1_STROBE_RX);
Wolfgang Betz 23:4192649f35da 589 CLEAR_TXBUF();
Wolfgang Betz 23:4192649f35da 590 CLEAR_RXBUF();
Wolfgang Betz 23:4192649f35da 591 _spirit_rx_err = false;
Wolfgang Betz 23:4192649f35da 592 _spirit_tx_started = false;
Wolfgang Betz 23:4192649f35da 593
Wolfgang Betz 23:4192649f35da 594 /* call user callback */
Wolfgang Betz 23:4192649f35da 595 if(_current_irq_callback) {
Wolfgang Betz 23:4192649f35da 596 _current_irq_callback(TX_ERR);
Wolfgang Betz 23:4192649f35da 597 }
Wolfgang Betz 23:4192649f35da 598
Wolfgang Betz 23:4192649f35da 599 }
Wolfgang Betz 4:07537ca85c66 600 }