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).

source/SimpleSpirit1.cpp@77:a9a9807bf3ed, 2018-01-18 (annotated)

Committer:
Wolfgang Betz
Date:
Thu Jan 18 15:07:23 2018 +0100
Revision:
77:a9a9807bf3ed
Parent:
71:4a7772415d9c
Child:
82:a18c22d2b83a
Merge pull request #3 from SeppoTakalo/skip



Skip compilation if FEATURE_NANOSTACK is not enabled

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Wolfgang Betz 34:edda6a7238ec 1 /*** Mbed Includes ***/
Wolfgang Betz 34:edda6a7238ec 2 #include "SimpleSpirit1.h"
Wolfgang Betz 34:edda6a7238ec 3 #include "radio_spi.h"
Wolfgang Betz 34:edda6a7238ec 4
Wolfgang Betz 34:edda6a7238ec 5 #define SPIRIT_GPIO_IRQ (SPIRIT_GPIO_3)
Wolfgang Betz 34:edda6a7238ec 6
Wolfgang Betz 34:edda6a7238ec 7 static uint16_t last_state;
Wolfgang Betz 34:edda6a7238ec 8 #define SPIRIT1_STATUS() ((last_state = (uint16_t)refresh_state()) & SPIRIT1_STATE_STATEBITS)
Wolfgang Betz 34:edda6a7238ec 9
Wolfgang Betz 34:edda6a7238ec 10 #define XO_ON (0x1)
Wolfgang Betz 34:edda6a7238ec 11
Wolfgang Betz 70:19b5f9b9ba80 12 #define BUSYWAIT_UNTIL(cond, millisecs) \
Wolfgang Betz 70:19b5f9b9ba80 13 do { \
Wolfgang Betz 70:19b5f9b9ba80 14 uint32_t start = us_ticker_read(); \
Wolfgang Betz 70:19b5f9b9ba80 15 uint32_t limit = (uint32_t)millisecs*1000U; \
Wolfgang Betz 70:19b5f9b9ba80 16 while (!(cond)) { \
Wolfgang Betz 70:19b5f9b9ba80 17 uint32_t now = us_ticker_read(); \
Wolfgang Betz 71:4a7772415d9c 18 if((now - start) > limit) break; \
Wolfgang Betz 70:19b5f9b9ba80 19 } \
Wolfgang Betz 69:22e9b407effa 20 } while(0)
Wolfgang Betz 34:edda6a7238ec 21
Wolfgang Betz 34:edda6a7238ec 22 #define st_lib_spirit_irqs SpiritIrqs
Wolfgang Betz 34:edda6a7238ec 23
Wolfgang Betz 37:bc043030b55a 24 #define STATE_TIMEOUT (100)
Wolfgang Betz 34:edda6a7238ec 25
Wolfgang Betz 34:edda6a7238ec 26 // betzw: switching force & back from standby is on some devices quite unstable
Wolfgang Betz 34:edda6a7238ec 27 #define USE_STANDBY_STATE
Wolfgang Betz 34:edda6a7238ec 28
Wolfgang Betz 34:edda6a7238ec 29 /*** Class Implementation ***/
Wolfgang Betz 34:edda6a7238ec 30 /** Static Class Variables **/
Wolfgang Betz 34:edda6a7238ec 31 SimpleSpirit1 *SimpleSpirit1::_singleton = NULL;
Wolfgang Betz 34:edda6a7238ec 32
Wolfgang Betz 34:edda6a7238ec 33 /** Constructor **/
Wolfgang Betz 34:edda6a7238ec 34 SimpleSpirit1::SimpleSpirit1(PinName mosi, PinName miso, PinName sclk,
Wolfgang Betz 69:22e9b407effa 35 PinName irq, PinName cs, PinName sdn,
Wolfgang Betz 69:22e9b407effa 36 PinName led) :
Wolfgang Betz 69:22e9b407effa 37 _spi(mosi, miso, sclk),
Wolfgang Betz 69:22e9b407effa 38 _irq(irq),
Wolfgang Betz 69:22e9b407effa 39 _chip_select(cs),
Wolfgang Betz 69:22e9b407effa 40 _shut_down(sdn),
Wolfgang Betz 69:22e9b407effa 41 _led(led),
Wolfgang Betz 69:22e9b407effa 42 _current_irq_callback(),
Wolfgang Betz 69:22e9b407effa 43 _rx_receiving_timeout()
Wolfgang Betz 34:edda6a7238ec 44 {
Wolfgang Betz 34:edda6a7238ec 45 }
Wolfgang Betz 34:edda6a7238ec 46
Wolfgang Betz 34:edda6a7238ec 47 /** Init Function **/
Wolfgang Betz 34:edda6a7238ec 48 void SimpleSpirit1::init() {
Wolfgang Betz 69:22e9b407effa 49 /* reset irq disable counter and irq callback & disable irq */
Wolfgang Betz 69:22e9b407effa 50 _nr_of_irq_disables = 0;
Wolfgang Betz 69:22e9b407effa 51 disable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 52
Wolfgang Betz 69:22e9b407effa 53 /* unselect chip */
Wolfgang Betz 69:22e9b407effa 54 chip_unselect();
Wolfgang Betz 34:edda6a7238ec 55
Wolfgang Betz 69:22e9b407effa 56 /* configure spi */
Wolfgang Betz 69:22e9b407effa 57 _spi.format(8, 0); /* 8-bit, mode = 0, [order = SPI_MSB] only available in mbed3 */
Wolfgang Betz 69:22e9b407effa 58 _spi.frequency(10000000); // 10MHz (i.e. max speed allowed for Spirit1)
Wolfgang Betz 34:edda6a7238ec 59
Wolfgang Betz 69:22e9b407effa 60 /* install irq handler */
Wolfgang Betz 69:22e9b407effa 61 _irq.mode(PullUp);
Wolfgang Betz 69:22e9b407effa 62 _irq.fall(Callback<void()>(this, &SimpleSpirit1::IrqHandler));
Wolfgang Betz 34:edda6a7238ec 63
Wolfgang Betz 69:22e9b407effa 64 /* init cube vars */
Wolfgang Betz 69:22e9b407effa 65 spirit_on = OFF;
Wolfgang Betz 69:22e9b407effa 66 last_rssi = 0 ; //MGR
Wolfgang Betz 69:22e9b407effa 67 last_sqi = 0 ; //MGR
Wolfgang Betz 34:edda6a7238ec 68
Wolfgang Betz 69:22e9b407effa 69 /* set frequencies */
Wolfgang Betz 69:22e9b407effa 70 radio_set_xtal_freq(XTAL_FREQUENCY);
Wolfgang Betz 69:22e9b407effa 71 mgmt_set_freq_base((uint32_t)BASE_FREQUENCY);
Wolfgang Betz 34:edda6a7238ec 72
Wolfgang Betz 69:22e9b407effa 73 /* restart board */
Wolfgang Betz 69:22e9b407effa 74 enter_shutdown();
Wolfgang Betz 69:22e9b407effa 75 exit_shutdown();
Wolfgang Betz 34:edda6a7238ec 76
Wolfgang Betz 69:22e9b407effa 77 /* soft core reset */
Wolfgang Betz 69:22e9b407effa 78 cmd_strobe(SPIRIT1_STROBE_SRES);
Wolfgang Betz 34:edda6a7238ec 79
Wolfgang Betz 69:22e9b407effa 80 /* Configures the SPIRIT1 radio part */
Wolfgang Betz 69:22e9b407effa 81 SRadioInit x_radio_init = {
Wolfgang Betz 69:22e9b407effa 82 XTAL_OFFSET_PPM,
Wolfgang Betz 69:22e9b407effa 83 (uint32_t)BASE_FREQUENCY,
Wolfgang Betz 69:22e9b407effa 84 (uint32_t)CHANNEL_SPACE,
Wolfgang Betz 69:22e9b407effa 85 CHANNEL_NUMBER,
Wolfgang Betz 69:22e9b407effa 86 MODULATION_SELECT,
Wolfgang Betz 69:22e9b407effa 87 DATARATE,
Wolfgang Betz 69:22e9b407effa 88 (uint32_t)FREQ_DEVIATION,
Wolfgang Betz 69:22e9b407effa 89 (uint32_t)BANDWIDTH
Wolfgang Betz 69:22e9b407effa 90 };
Wolfgang Betz 69:22e9b407effa 91 radio_init(&x_radio_init);
Wolfgang Betz 69:22e9b407effa 92 radio_set_pa_level_dbm(0,POWER_DBM);
Wolfgang Betz 69:22e9b407effa 93 radio_set_pa_level_max_index(0);
Wolfgang Betz 34:edda6a7238ec 94
Wolfgang Betz 69:22e9b407effa 95 /* Configures the SPIRIT1 packet handler part*/
Wolfgang Betz 69:22e9b407effa 96 PktBasicInit x_basic_init = {
Wolfgang Betz 69:22e9b407effa 97 PREAMBLE_LENGTH,
Wolfgang Betz 69:22e9b407effa 98 SYNC_LENGTH,
Wolfgang Betz 69:22e9b407effa 99 SYNC_WORD,
Wolfgang Betz 69:22e9b407effa 100 LENGTH_TYPE,
Wolfgang Betz 69:22e9b407effa 101 LENGTH_WIDTH,
Wolfgang Betz 69:22e9b407effa 102 CRC_MODE,
Wolfgang Betz 69:22e9b407effa 103 CONTROL_LENGTH,
Wolfgang Betz 69:22e9b407effa 104 EN_ADDRESS,
Wolfgang Betz 69:22e9b407effa 105 EN_FEC,
Wolfgang Betz 69:22e9b407effa 106 EN_WHITENING
Wolfgang Betz 69:22e9b407effa 107 };
Wolfgang Betz 69:22e9b407effa 108 pkt_basic_init(&x_basic_init);
Wolfgang Betz 34:edda6a7238ec 109
Wolfgang Betz 69:22e9b407effa 110 /* Enable the following interrupt sources, routed to GPIO */
Wolfgang Betz 69:22e9b407effa 111 irq_de_init(NULL);
Wolfgang Betz 69:22e9b407effa 112 irq_clear_status();
Wolfgang Betz 69:22e9b407effa 113 irq_set_status(TX_DATA_SENT, S_ENABLE);
Wolfgang Betz 69:22e9b407effa 114 irq_set_status(RX_DATA_READY,S_ENABLE);
Wolfgang Betz 69:22e9b407effa 115 irq_set_status(RX_DATA_DISC, S_ENABLE);
Wolfgang Betz 69:22e9b407effa 116 irq_set_status(VALID_SYNC, S_ENABLE);
Wolfgang Betz 69:22e9b407effa 117 irq_set_status(TX_FIFO_ERROR, S_ENABLE);
Wolfgang Betz 69:22e9b407effa 118 irq_set_status(RX_FIFO_ERROR, S_ENABLE);
Wolfgang Betz 47:3a30b960a8c2 119 #ifndef RX_FIFO_THR_WA
Wolfgang Betz 69:22e9b407effa 120 irq_set_status(TX_FIFO_ALMOST_EMPTY, S_ENABLE);
Wolfgang Betz 69:22e9b407effa 121 irq_set_status(RX_FIFO_ALMOST_FULL, S_ENABLE);
Wolfgang Betz 47:3a30b960a8c2 122 #endif // !RX_FIFO_THR_WA
Wolfgang Betz 34:edda6a7238ec 123
Wolfgang Betz 69:22e9b407effa 124 /* Configure Spirit1 */
Wolfgang Betz 69:22e9b407effa 125 radio_persistent_rx(S_ENABLE);
Wolfgang Betz 69:22e9b407effa 126 qi_set_sqi_threshold(SQI_TH_0);
Wolfgang Betz 69:22e9b407effa 127 qi_sqi_check(S_ENABLE);
Wolfgang Betz 69:22e9b407effa 128 qi_set_rssi_threshold_dbm(CCA_THRESHOLD);
Wolfgang Betz 69:22e9b407effa 129 timer_set_rx_timeout_stop_condition(SQI_ABOVE_THRESHOLD);
Wolfgang Betz 69:22e9b407effa 130 timer_set_infinite_rx_timeout();
Wolfgang Betz 69:22e9b407effa 131 radio_afc_freeze_on_sync(S_ENABLE);
Wolfgang Betz 69:22e9b407effa 132 calibration_rco(S_ENABLE);
Wolfgang Betz 34:edda6a7238ec 133
Wolfgang Betz 69:22e9b407effa 134 spirit_on = OFF;
Wolfgang Betz 69:22e9b407effa 135 CLEAR_TXBUF();
Wolfgang Betz 69:22e9b407effa 136 CLEAR_RXBUF();
Wolfgang Betz 69:22e9b407effa 137 _spirit_tx_started = false;
Wolfgang Betz 69:22e9b407effa 138 _is_receiving = false;
Wolfgang Betz 34:edda6a7238ec 139
Wolfgang Betz 69:22e9b407effa 140 /* Configure the radio to route the IRQ signal to its GPIO 3 */
Wolfgang Betz 69:22e9b407effa 141 SGpioInit x_gpio_init = {
Wolfgang Betz 69:22e9b407effa 142 SPIRIT_GPIO_IRQ,
Wolfgang Betz 69:22e9b407effa 143 SPIRIT_GPIO_MODE_DIGITAL_OUTPUT_LP,
Wolfgang Betz 69:22e9b407effa 144 SPIRIT_GPIO_DIG_OUT_IRQ
Wolfgang Betz 69:22e9b407effa 145 };
Wolfgang Betz 69:22e9b407effa 146 spirit_gpio_init(&x_gpio_init);
Wolfgang Betz 34:edda6a7238ec 147
Wolfgang Betz 69:22e9b407effa 148 /* Setup CSMA/CA */
Wolfgang Betz 69:22e9b407effa 149 CsmaInit x_csma_init = {
Wolfgang Betz 69:22e9b407effa 150 S_ENABLE, // enable persistent mode
Wolfgang Betz 69:22e9b407effa 151 TBIT_TIME_64, // Tcca time
Wolfgang Betz 69:22e9b407effa 152 TCCA_TIME_3, // Lcca length
Wolfgang Betz 69:22e9b407effa 153 5, // max nr of backoffs (<8)
Wolfgang Betz 69:22e9b407effa 154 1, // BU counter seed
Wolfgang Betz 69:22e9b407effa 155 8 // BU prescaler
Wolfgang Betz 69:22e9b407effa 156 };
Wolfgang Betz 69:22e9b407effa 157 csma_ca_init(&x_csma_init);
Wolfgang Betz 34:edda6a7238ec 158
Wolfgang Betz 34:edda6a7238ec 159 #ifdef USE_STANDBY_STATE
Wolfgang Betz 69:22e9b407effa 160 /* Puts the SPIRIT1 in STANDBY mode (125us -> rx/tx) */
Wolfgang Betz 69:22e9b407effa 161 cmd_strobe(SPIRIT1_STROBE_STANDBY);
Wolfgang Betz 34:edda6a7238ec 162 #endif // USE_STANDBY_STATE
Wolfgang Betz 34:edda6a7238ec 163 }
Wolfgang Betz 34:edda6a7238ec 164
Wolfgang Betz 69:22e9b407effa 165 static volatile int tx_fifo_remaining = 0; // to be used in irq handler
Wolfgang Betz 69:22e9b407effa 166 static volatile int tx_buffer_pos = 0; // to be used in irq handler
Wolfgang Betz 69:22e9b407effa 167 static const volatile uint8_t *tx_fifo_buffer = NULL; // to be used in irq handler
Wolfgang Betz 64:28ef790e4ef7 168 int SimpleSpirit1::send(const void *payload, unsigned int payload_len, bool use_csma_ca) {
Wolfgang Betz 69:22e9b407effa 169 /* Checks if the payload length is supported */
Wolfgang Betz 69:22e9b407effa 170 if(payload_len > MAX_PACKET_LEN) {
Wolfgang Betz 69:22e9b407effa 171 return RADIO_TX_ERR;
Wolfgang Betz 69:22e9b407effa 172 }
Wolfgang Betz 34:edda6a7238ec 173
Wolfgang Betz 69:22e9b407effa 174 disable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 175
Wolfgang Betz 69:22e9b407effa 176 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_RX, STATE_TIMEOUT);
Wolfgang Betz 34:edda6a7238ec 177 #ifndef NDEBUG
Wolfgang Betz 69:22e9b407effa 178 if((last_state & SPIRIT1_STATE_STATEBITS) != SPIRIT1_STATE_RX) {
Wolfgang Betz 69:22e9b407effa 179 debug("\r\nAssert failed in: %s (%d): state=%x\r\n", __func__, __LINE__, last_state>>1);
Wolfgang Betz 69:22e9b407effa 180 }
Wolfgang Betz 34:edda6a7238ec 181 #endif
Wolfgang Betz 34:edda6a7238ec 182
Wolfgang Betz 69:22e9b407effa 183 /* Reset State to Ready */
Wolfgang Betz 69:22e9b407effa 184 set_ready_state();
Wolfgang Betz 34:edda6a7238ec 185
Wolfgang Betz 69:22e9b407effa 186 cmd_strobe(SPIRIT1_STROBE_FTX); // flush TX FIFO buffer
Wolfgang Betz 34:edda6a7238ec 187
Wolfgang Betz 34:edda6a7238ec 188 #ifndef NDEBUG
Wolfgang Betz 69:22e9b407effa 189 debug_if(!(linear_fifo_read_num_elements_tx_fifo() == 0), "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 34:edda6a7238ec 190 #endif
Wolfgang Betz 34:edda6a7238ec 191
Wolfgang Betz 69:22e9b407effa 192 pkt_basic_set_payload_length(payload_len); // set desired payload len
Wolfgang Betz 34:edda6a7238ec 193
Wolfgang Betz 69:22e9b407effa 194 if(use_csma_ca) {
Wolfgang Betz 69:22e9b407effa 195 csma_ca_state(S_ENABLE); // enable CSMA/CA
Wolfgang Betz 69:22e9b407effa 196 }
Wolfgang Betz 34:edda6a7238ec 197
Wolfgang Betz 69:22e9b407effa 198 /* Init buffer & number of bytes to be send */
Wolfgang Betz 69:22e9b407effa 199 tx_fifo_remaining = payload_len;
Wolfgang Betz 69:22e9b407effa 200 tx_fifo_buffer = (const uint8_t*)payload;
Wolfgang Betz 45:2d01cc9bc761 201
Wolfgang Betz 69:22e9b407effa 202 int8_t fifo_available = SPIRIT_MAX_FIFO_LEN; // fill-up whole fifo
Wolfgang Betz 69:22e9b407effa 203 int8_t to_send = (tx_fifo_remaining > fifo_available) ? fifo_available : tx_fifo_remaining;
Wolfgang Betz 34:edda6a7238ec 204
Wolfgang Betz 69:22e9b407effa 205 tx_fifo_remaining -= to_send;
Wolfgang Betz 34:edda6a7238ec 206
Wolfgang Betz 69:22e9b407effa 207 /* Fill FIFO Buffer */
Wolfgang Betz 69:22e9b407effa 208 if(to_send > 0) {
Wolfgang Betz 69:22e9b407effa 209 spi_write_linear_fifo(to_send, (uint8_t*)&tx_fifo_buffer[0]);
Wolfgang Betz 69:22e9b407effa 210 }
Wolfgang Betz 34:edda6a7238ec 211
Wolfgang Betz 69:22e9b407effa 212 tx_buffer_pos = to_send;
Wolfgang Betz 69:22e9b407effa 213 _spirit_tx_started = true;
Wolfgang Betz 34:edda6a7238ec 214
Wolfgang Betz 69:22e9b407effa 215 enable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 216
Wolfgang Betz 69:22e9b407effa 217 /* Start transmitting */
Wolfgang Betz 69:22e9b407effa 218 cmd_strobe(SPIRIT1_STROBE_TX);
Wolfgang Betz 45:2d01cc9bc761 219
Wolfgang Betz 69:22e9b407effa 220 while(tx_fifo_remaining != 0); // wait until not everything is yet send (evtl. by irq handler)
Wolfgang Betz 45:2d01cc9bc761 221
Wolfgang Betz 69:22e9b407effa 222 BUSYWAIT_UNTIL(!_spirit_tx_started, STATE_TIMEOUT);
Wolfgang Betz 34:edda6a7238ec 223 #ifdef HEAVY_DEBUG
Wolfgang Betz 69:22e9b407effa 224 debug("\r\n%s (%d): state=%x, _spirit_tx_started=%d\r\n", __func__, __LINE__, SPIRIT1_STATUS()>>1, _spirit_tx_started);
Wolfgang Betz 34:edda6a7238ec 225 #endif
Wolfgang Betz 34:edda6a7238ec 226
Wolfgang Betz 64:28ef790e4ef7 227 if(use_csma_ca) {
Wolfgang Betz 64:28ef790e4ef7 228 csma_ca_state(S_DISABLE); // disable CSMA/CA
Wolfgang Betz 64:28ef790e4ef7 229 }
Wolfgang Betz 43:a512f909514a 230
Wolfgang Betz 69:22e9b407effa 231 cmd_strobe(SPIRIT1_STROBE_RX); // Return to RX state
Wolfgang Betz 34:edda6a7238ec 232
Wolfgang Betz 69:22e9b407effa 233 disable_spirit_irq();
Wolfgang Betz 69:22e9b407effa 234 if(_spirit_tx_started) { // in case of state timeout
Wolfgang Betz 69:22e9b407effa 235 _spirit_tx_started = false;
Wolfgang Betz 69:22e9b407effa 236 enable_spirit_irq();
Wolfgang Betz 69:22e9b407effa 237 return RADIO_TX_ERR;
Wolfgang Betz 69:22e9b407effa 238 } else {
Wolfgang Betz 69:22e9b407effa 239 enable_spirit_irq();
Wolfgang Betz 69:22e9b407effa 240 return RADIO_TX_OK;
Wolfgang Betz 69:22e9b407effa 241 }
Wolfgang Betz 34:edda6a7238ec 242 }
Wolfgang Betz 34:edda6a7238ec 243
Wolfgang Betz 34:edda6a7238ec 244 /** Set Ready State **/
Wolfgang Betz 34:edda6a7238ec 245 void SimpleSpirit1::set_ready_state(void) {
Wolfgang Betz 69:22e9b407effa 246 uint16_t state;
Wolfgang Betz 34:edda6a7238ec 247
Wolfgang Betz 69:22e9b407effa 248 disable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 249
Wolfgang Betz 69:22e9b407effa 250 _spirit_tx_started = false;
Wolfgang Betz 69:22e9b407effa 251 _is_receiving = false;
Wolfgang Betz 69:22e9b407effa 252 stop_rx_timeout();
Wolfgang Betz 34:edda6a7238ec 253
Wolfgang Betz 69:22e9b407effa 254 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 69:22e9b407effa 255 CLEAR_RXBUF();
Wolfgang Betz 69:22e9b407effa 256 CLEAR_TXBUF();
Wolfgang Betz 34:edda6a7238ec 257
Wolfgang Betz 69:22e9b407effa 258 state = SPIRIT1_STATUS();
Wolfgang Betz 69:22e9b407effa 259 if(state == SPIRIT1_STATE_STANDBY) {
Wolfgang Betz 69:22e9b407effa 260 cmd_strobe(SPIRIT1_STROBE_READY);
Wolfgang Betz 69:22e9b407effa 261 } else if(state == SPIRIT1_STATE_RX) {
Wolfgang Betz 69:22e9b407effa 262 cmd_strobe(SPIRIT1_STROBE_SABORT);
Wolfgang Betz 69:22e9b407effa 263 } else if(state != SPIRIT1_STATE_READY) {
Wolfgang Betz 34:edda6a7238ec 264 #ifndef NDEBUG
Wolfgang Betz 69:22e9b407effa 265 debug("\r\nAssert failed in: %s (%d): state=%x\r\n", __func__, __LINE__, state>>1);
Wolfgang Betz 34:edda6a7238ec 266 #endif
Wolfgang Betz 69:22e9b407effa 267 }
Wolfgang Betz 34:edda6a7238ec 268
Wolfgang Betz 69:22e9b407effa 269 BUSYWAIT_UNTIL((SPIRIT1_STATUS() == SPIRIT1_STATE_READY) && ((last_state & XO_ON) == XO_ON), STATE_TIMEOUT);
Wolfgang Betz 69:22e9b407effa 270 if(last_state != (SPIRIT1_STATE_READY | XO_ON)) {
Wolfgang Betz 69:22e9b407effa 271 error("\r\nSpirit1: failed to become ready (%x) => pls. reset!\r\n", last_state);
Wolfgang Betz 69:22e9b407effa 272 enable_spirit_irq();
Wolfgang Betz 69:22e9b407effa 273 return;
Wolfgang Betz 69:22e9b407effa 274 }
Wolfgang Betz 34:edda6a7238ec 275
Wolfgang Betz 69:22e9b407effa 276 irq_clear_status();
Wolfgang Betz 34:edda6a7238ec 277
Wolfgang Betz 69:22e9b407effa 278 enable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 279 }
Wolfgang Betz 34:edda6a7238ec 280
Wolfgang Betz 34:edda6a7238ec 281 int SimpleSpirit1::off(void) {
Wolfgang Betz 69:22e9b407effa 282 if(spirit_on == ON) {
Wolfgang Betz 69:22e9b407effa 283 /* Disables the mcu to get IRQ from the SPIRIT1 */
Wolfgang Betz 69:22e9b407effa 284 disable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 285
Wolfgang Betz 69:22e9b407effa 286 /* first stop rx/tx */
Wolfgang Betz 69:22e9b407effa 287 set_ready_state();
Wolfgang Betz 34:edda6a7238ec 288
Wolfgang Betz 34:edda6a7238ec 289 #ifdef USE_STANDBY_STATE
Wolfgang Betz 69:22e9b407effa 290 /* Puts the SPIRIT1 in STANDBY */
Wolfgang Betz 69:22e9b407effa 291 cmd_strobe(SPIRIT1_STROBE_STANDBY);
Wolfgang Betz 69:22e9b407effa 292 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_STANDBY, STATE_TIMEOUT);
Wolfgang Betz 69:22e9b407effa 293 if((last_state & SPIRIT1_STATE_STATEBITS) != SPIRIT1_STATE_STANDBY) {
Wolfgang Betz 69:22e9b407effa 294 error("\r\nSpirit1: failed to enter standby (%x)\r\n", last_state>>1);
Wolfgang Betz 69:22e9b407effa 295 return 1;
Wolfgang Betz 69:22e9b407effa 296 }
Wolfgang Betz 34:edda6a7238ec 297 #endif // USE_STANDBY_STATE
Wolfgang Betz 34:edda6a7238ec 298
Wolfgang Betz 69:22e9b407effa 299 spirit_on = OFF;
Wolfgang Betz 69:22e9b407effa 300 _nr_of_irq_disables = 1;
Wolfgang Betz 69:22e9b407effa 301 }
Wolfgang Betz 69:22e9b407effa 302 return 0;
Wolfgang Betz 34:edda6a7238ec 303 }
Wolfgang Betz 34:edda6a7238ec 304
Wolfgang Betz 34:edda6a7238ec 305 int SimpleSpirit1::on(void) {
Wolfgang Betz 69:22e9b407effa 306 if(spirit_on == OFF) {
Wolfgang Betz 69:22e9b407effa 307 set_ready_state();
Wolfgang Betz 34:edda6a7238ec 308
Wolfgang Betz 69:22e9b407effa 309 /* now we go to Rx */
Wolfgang Betz 69:22e9b407effa 310 cmd_strobe(SPIRIT1_STROBE_RX);
Wolfgang Betz 34:edda6a7238ec 311
Wolfgang Betz 69:22e9b407effa 312 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_RX, STATE_TIMEOUT);
Wolfgang Betz 69:22e9b407effa 313 if((last_state & SPIRIT1_STATE_STATEBITS) != SPIRIT1_STATE_RX) {
Wolfgang Betz 69:22e9b407effa 314 error("\r\nSpirit1: failed to enter rx (%x) => retry\r\n", last_state>>1);
Wolfgang Betz 69:22e9b407effa 315 }
Wolfgang Betz 34:edda6a7238ec 316
Wolfgang Betz 69:22e9b407effa 317 /* Enables the mcu to get IRQ from the SPIRIT1 */
Wolfgang Betz 69:22e9b407effa 318 spirit_on = ON;
Wolfgang Betz 34:edda6a7238ec 319 #ifndef NDEBUG
Wolfgang Betz 69:22e9b407effa 320 debug_if(!(_nr_of_irq_disables == 1), "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 34:edda6a7238ec 321 #endif
Wolfgang Betz 69:22e9b407effa 322 enable_spirit_irq();
Wolfgang Betz 69:22e9b407effa 323 }
Wolfgang Betz 34:edda6a7238ec 324
Wolfgang Betz 34:edda6a7238ec 325 #ifndef NDEBUG
Wolfgang Betz 69:22e9b407effa 326 if(SPIRIT1_STATUS() != SPIRIT1_STATE_RX) {
Wolfgang Betz 69:22e9b407effa 327 debug("\r\nAssert failed in: %s (%d): state=%x\r\n", __func__, __LINE__, last_state>>1);
Wolfgang Betz 69:22e9b407effa 328 }
Wolfgang Betz 34:edda6a7238ec 329 #endif
Wolfgang Betz 34:edda6a7238ec 330
Wolfgang Betz 69:22e9b407effa 331 return 0;
Wolfgang Betz 34:edda6a7238ec 332 }
Wolfgang Betz 34:edda6a7238ec 333
Wolfgang Betz 34:edda6a7238ec 334 uint8_t SimpleSpirit1::refresh_state(void) {
Wolfgang Betz 69:22e9b407effa 335 uint8_t mcstate;
Wolfgang Betz 34:edda6a7238ec 336
Wolfgang Betz 69:22e9b407effa 337 SpiritSpiReadRegisters(MC_STATE0_BASE, 1, &mcstate);
Wolfgang Betz 34:edda6a7238ec 338
Wolfgang Betz 69:22e9b407effa 339 return mcstate;
Wolfgang Betz 34:edda6a7238ec 340 }
Wolfgang Betz 34:edda6a7238ec 341
Wolfgang Betz 34:edda6a7238ec 342 int SimpleSpirit1::read(void *buf, unsigned int bufsize)
Wolfgang Betz 34:edda6a7238ec 343 {
Wolfgang Betz 69:22e9b407effa 344 disable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 345
Wolfgang Betz 69:22e9b407effa 346 /* Checks if the RX buffer is empty */
Wolfgang Betz 69:22e9b407effa 347 if(IS_RXBUF_EMPTY()) {
Wolfgang Betz 43:a512f909514a 348 #ifndef NDEBUG
Wolfgang Betz 69:22e9b407effa 349 debug("\r\nBuffer is empty\r\n");
Wolfgang Betz 43:a512f909514a 350 #endif
Wolfgang Betz 69:22e9b407effa 351 set_ready_state();
Wolfgang Betz 34:edda6a7238ec 352
Wolfgang Betz 69:22e9b407effa 353 cmd_strobe(SPIRIT1_STROBE_RX);
Wolfgang Betz 69:22e9b407effa 354 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_RX, STATE_TIMEOUT);
Wolfgang Betz 69:22e9b407effa 355 enable_spirit_irq();
Wolfgang Betz 69:22e9b407effa 356 return 0;
Wolfgang Betz 69:22e9b407effa 357 }
Wolfgang Betz 34:edda6a7238ec 358
Wolfgang Betz 69:22e9b407effa 359 if(bufsize < spirit_rx_len) {
Wolfgang Betz 69:22e9b407effa 360 enable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 361
Wolfgang Betz 69:22e9b407effa 362 /* If buf has the correct size */
Wolfgang Betz 34:edda6a7238ec 363 #ifndef NDEBUG
Wolfgang Betz 69:22e9b407effa 364 debug("\r\nTOO SMALL BUF\r\n");
Wolfgang Betz 34:edda6a7238ec 365 #endif
Wolfgang Betz 69:22e9b407effa 366 return 0;
Wolfgang Betz 69:22e9b407effa 367 } else {
Wolfgang Betz 69:22e9b407effa 368 /* Copies the packet received */
Wolfgang Betz 69:22e9b407effa 369 memcpy(buf, spirit_rx_buf, spirit_rx_len);
Wolfgang Betz 34:edda6a7238ec 370
Wolfgang Betz 69:22e9b407effa 371 bufsize = spirit_rx_len;
Wolfgang Betz 69:22e9b407effa 372 CLEAR_RXBUF();
Wolfgang Betz 34:edda6a7238ec 373
Wolfgang Betz 69:22e9b407effa 374 enable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 375
Wolfgang Betz 69:22e9b407effa 376 return bufsize;
Wolfgang Betz 69:22e9b407effa 377 }
Wolfgang Betz 34:edda6a7238ec 378
Wolfgang Betz 34:edda6a7238ec 379 }
Wolfgang Betz 34:edda6a7238ec 380
Wolfgang Betz 34:edda6a7238ec 381 int SimpleSpirit1::channel_clear(void)
Wolfgang Betz 34:edda6a7238ec 382 {
Wolfgang Betz 69:22e9b407effa 383 float rssi_value;
Wolfgang Betz 69:22e9b407effa 384 /* Local variable used to memorize the SPIRIT1 state */
Wolfgang Betz 69:22e9b407effa 385 uint8_t spirit_state = ON;
Wolfgang Betz 34:edda6a7238ec 386
Wolfgang Betz 69:22e9b407effa 387 if(spirit_on == OFF) {
Wolfgang Betz 69:22e9b407effa 388 /* Wakes up the SPIRIT1 */
Wolfgang Betz 69:22e9b407effa 389 on();
Wolfgang Betz 69:22e9b407effa 390 spirit_state = OFF;
Wolfgang Betz 69:22e9b407effa 391 }
Wolfgang Betz 34:edda6a7238ec 392
Wolfgang Betz 34:edda6a7238ec 393 #ifndef NDEBUG
Wolfgang Betz 69:22e9b407effa 394 if(SPIRIT1_STATUS() != SPIRIT1_STATE_RX) {
Wolfgang Betz 69:22e9b407effa 395 debug("\r\nAssert failed in: %s (%d): state=%x\r\n", __func__, __LINE__, last_state>>1);
Wolfgang Betz 69:22e9b407effa 396 }
Wolfgang Betz 34:edda6a7238ec 397 #endif
Wolfgang Betz 34:edda6a7238ec 398
Wolfgang Betz 69:22e9b407effa 399 disable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 400
Wolfgang Betz 69:22e9b407effa 401 /* Reset State to Ready */
Wolfgang Betz 69:22e9b407effa 402 set_ready_state();
Wolfgang Betz 34:edda6a7238ec 403
Wolfgang Betz 69:22e9b407effa 404 /* Stores the RSSI value */
Wolfgang Betz 69:22e9b407effa 405 rssi_value = qi_get_rssi_dbm();
Wolfgang Betz 34:edda6a7238ec 406
Wolfgang Betz 69:22e9b407effa 407 enable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 408
Wolfgang Betz 69:22e9b407effa 409 /* Puts the SPIRIT1 in its previous state */
Wolfgang Betz 69:22e9b407effa 410 if(spirit_state==OFF) {
Wolfgang Betz 69:22e9b407effa 411 off();
Wolfgang Betz 34:edda6a7238ec 412 #ifndef NDEBUG
Wolfgang Betz 34:edda6a7238ec 413 #ifdef USE_STANDBY_STATE
Wolfgang Betz 69:22e9b407effa 414 if(SPIRIT1_STATUS() != SPIRIT1_STATE_STANDBY) {
Wolfgang Betz 34:edda6a7238ec 415 #else
Wolfgang Betz 69:22e9b407effa 416 if(SPIRIT1_STATUS() != SPIRIT1_STATE_READY) {
Wolfgang Betz 34:edda6a7238ec 417 #endif
Wolfgang Betz 69:22e9b407effa 418 debug("\r\nAssert failed in: %s (%d): state=%x\r\n", __func__, __LINE__, last_state>>1);
Wolfgang Betz 69:22e9b407effa 419 }
Wolfgang Betz 34:edda6a7238ec 420 #endif
Wolfgang Betz 69:22e9b407effa 421 } else {
Wolfgang Betz 69:22e9b407effa 422 disable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 423
Wolfgang Betz 69:22e9b407effa 424 set_ready_state();
Wolfgang Betz 34:edda6a7238ec 425
Wolfgang Betz 69:22e9b407effa 426 cmd_strobe(SPIRIT1_STROBE_RX);
Wolfgang Betz 69:22e9b407effa 427 BUSYWAIT_UNTIL(SPIRIT1_STATUS() == SPIRIT1_STATE_RX, STATE_TIMEOUT);
Wolfgang Betz 69:22e9b407effa 428 if((last_state & SPIRIT1_STATE_STATEBITS) != SPIRIT1_STATE_RX) {
Wolfgang Betz 69:22e9b407effa 429 error("\r\nSpirit1: (#2) failed to enter rx (%x) => retry\r\n", last_state>>1);
Wolfgang Betz 69:22e9b407effa 430 }
Wolfgang Betz 34:edda6a7238ec 431
Wolfgang Betz 69:22e9b407effa 432 enable_spirit_irq();
Wolfgang Betz 34:edda6a7238ec 433
Wolfgang Betz 34:edda6a7238ec 434 #ifndef NDEBUG
Wolfgang Betz 69:22e9b407effa 435 if(SPIRIT1_STATUS() != SPIRIT1_STATE_RX) {
Wolfgang Betz 69:22e9b407effa 436 debug("\r\nAssert failed in: %s (%d): state=%x\r\n", __func__, __LINE__, last_state>>1);
Wolfgang Betz 69:22e9b407effa 437 }
Wolfgang Betz 34:edda6a7238ec 438 #endif
Wolfgang Betz 69:22e9b407effa 439 }
Wolfgang Betz 34:edda6a7238ec 440
Wolfgang Betz 69:22e9b407effa 441 /* Checks the RSSI value with the threshold */
Wolfgang Betz 69:22e9b407effa 442 if(rssi_value<CCA_THRESHOLD) {
Wolfgang Betz 69:22e9b407effa 443 return 0;
Wolfgang Betz 69:22e9b407effa 444 } else {
Wolfgang Betz 69:22e9b407effa 445 return 1;
Wolfgang Betz 69:22e9b407effa 446 }
Wolfgang Betz 69:22e9b407effa 447 }
Wolfgang Betz 34:edda6a7238ec 448
Wolfgang Betz 69:22e9b407effa 449 int SimpleSpirit1::get_pending_packet(void)
Wolfgang Betz 69:22e9b407effa 450 {
Wolfgang Betz 69:22e9b407effa 451 return !IS_RXBUF_EMPTY();
Wolfgang Betz 69:22e9b407effa 452 }
Wolfgang Betz 34:edda6a7238ec 453
Wolfgang Betz 69:22e9b407effa 454 /** Spirit Irq Callback **/
Wolfgang Betz 69:22e9b407effa 455 /* betzw - TODO: use threaded interrupt handling when `MBED_CONF_RTOS_PRESENT` is defined (see `atmel-rf-driver`) */
Wolfgang Betz 69:22e9b407effa 456 void SimpleSpirit1::IrqHandler() {
Wolfgang Betz 69:22e9b407effa 457 st_lib_spirit_irqs x_irq_status;
Wolfgang Betz 34:edda6a7238ec 458
Wolfgang Betz 69:22e9b407effa 459 /* get interrupt source from radio */
Wolfgang Betz 69:22e9b407effa 460 irq_get_status(&x_irq_status);
Wolfgang Betz 34:edda6a7238ec 461
Wolfgang Betz 69:22e9b407effa 462 /* The IRQ_TX_DATA_SENT notifies the packet has been sent. Puts the SPIRIT1 in RX */
Wolfgang Betz 69:22e9b407effa 463 if(x_irq_status.IRQ_TX_DATA_SENT) { /* betzw - NOTE: MUST be handled before `IRQ_RX_DATA_READY` for Nanostack integration!
Wolfgang Betz 65:a16f0064110a 464 Logically, Nanostack only expects the "DONE" after "SUCCESS" (if it gets
Wolfgang Betz 65:a16f0064110a 465 DONE before SUCCESS, it assumes you're not going to bother to send SUCCESS).
Wolfgang Betz 69:22e9b407effa 466 */
Wolfgang Betz 34:edda6a7238ec 467 #ifdef DEBUG_IRQ
Wolfgang Betz 69:22e9b407effa 468 uint32_t *tmp = (uint32_t*)&x_irq_status;
Wolfgang Betz 69:22e9b407effa 469 debug_if(!((*tmp) & IRQ_TX_DATA_SENT_MASK), "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 69:22e9b407effa 470 debug_if(tx_fifo_remaining != 0, "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 34:edda6a7238ec 471 #endif
Wolfgang Betz 45:2d01cc9bc761 472
Wolfgang Betz 69:22e9b407effa 473 if(_spirit_tx_started) {
Wolfgang Betz 69:22e9b407effa 474 _spirit_tx_started = false;
Wolfgang Betz 45:2d01cc9bc761 475
Wolfgang Betz 69:22e9b407effa 476 /* call user callback */
Wolfgang Betz 69:22e9b407effa 477 if(_current_irq_callback) {
Wolfgang Betz 69:22e9b407effa 478 _current_irq_callback(TX_DONE);
Wolfgang Betz 69:22e9b407effa 479 }
Wolfgang Betz 69:22e9b407effa 480 }
Wolfgang Betz 40:343254875d89 481
Wolfgang Betz 69:22e9b407effa 482 /* Disable handling of other TX flags */
Wolfgang Betz 69:22e9b407effa 483 x_irq_status.IRQ_TX_FIFO_ALMOST_EMPTY = S_RESET;
Wolfgang Betz 69:22e9b407effa 484 tx_fifo_buffer = NULL;
Wolfgang Betz 69:22e9b407effa 485 }
Wolfgang Betz 45:2d01cc9bc761 486
Wolfgang Betz 47:3a30b960a8c2 487 #ifndef RX_FIFO_THR_WA
Wolfgang Betz 69:22e9b407effa 488 /* The IRQ_TX_FIFO_ALMOST_EMPTY notifies an nearly empty TX fifo */
Wolfgang Betz 69:22e9b407effa 489 if(x_irq_status.IRQ_TX_FIFO_ALMOST_EMPTY) {
Wolfgang Betz 45:2d01cc9bc761 490 #ifdef DEBUG_IRQ
Wolfgang Betz 69:22e9b407effa 491 uint32_t *tmp = (uint32_t*)&x_irq_status;
Wolfgang Betz 69:22e9b407effa 492 debug_if(!((*tmp) & IRQ_TX_FIFO_ALMOST_EMPTY_MASK), "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 69:22e9b407effa 493 debug_if(!_spirit_tx_started, "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 69:22e9b407effa 494 debug_if(tx_fifo_buffer == NULL, "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 45:2d01cc9bc761 495 #endif
Wolfgang Betz 45:2d01cc9bc761 496
Wolfgang Betz 69:22e9b407effa 497 int8_t fifo_available = SPIRIT_MAX_FIFO_LEN/2; // fill-up half fifo
Wolfgang Betz 69:22e9b407effa 498 int8_t to_send = (tx_fifo_remaining > fifo_available) ? fifo_available : tx_fifo_remaining;
Wolfgang Betz 45:2d01cc9bc761 499
Wolfgang Betz 69:22e9b407effa 500 tx_fifo_remaining -= to_send;
Wolfgang Betz 45:2d01cc9bc761 501
Wolfgang Betz 69:22e9b407effa 502 /* Fill FIFO Buffer */
Wolfgang Betz 69:22e9b407effa 503 if(to_send > 0) {
Wolfgang Betz 69:22e9b407effa 504 spi_write_linear_fifo(to_send, (uint8_t*)&tx_fifo_buffer[tx_buffer_pos]);
Wolfgang Betz 69:22e9b407effa 505 }
Wolfgang Betz 69:22e9b407effa 506 tx_buffer_pos += to_send;
Wolfgang Betz 69:22e9b407effa 507 }
Wolfgang Betz 47:3a30b960a8c2 508 #endif // !RX_FIFO_THR_WA
Wolfgang Betz 34:edda6a7238ec 509
Wolfgang Betz 69:22e9b407effa 510 /* TX FIFO underflow/overflow error */
Wolfgang Betz 69:22e9b407effa 511 if(x_irq_status.IRQ_TX_FIFO_ERROR) {
Wolfgang Betz 34:edda6a7238ec 512 #ifdef DEBUG_IRQ
Wolfgang Betz 69:22e9b407effa 513 uint32_t *tmp = (uint32_t*)&x_irq_status;
Wolfgang Betz 69:22e9b407effa 514 debug("\r\n%s (%d): irq=%x\r\n", __func__, __LINE__, *tmp);
Wolfgang Betz 69:22e9b407effa 515 debug_if(!((*tmp) & IRQ_TX_FIFO_ERROR_MASK), "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 34:edda6a7238ec 516 #endif
Wolfgang Betz 69:22e9b407effa 517 if(_spirit_tx_started) {
Wolfgang Betz 69:22e9b407effa 518 _spirit_tx_started = false;
Wolfgang Betz 69:22e9b407effa 519 /* call user callback */
Wolfgang Betz 69:22e9b407effa 520 if(_current_irq_callback) {
Wolfgang Betz 69:22e9b407effa 521 _current_irq_callback(TX_ERR);
Wolfgang Betz 69:22e9b407effa 522 }
Wolfgang Betz 69:22e9b407effa 523 }
Wolfgang Betz 40:343254875d89 524
Wolfgang Betz 69:22e9b407effa 525 /* reset data still to be sent */
Wolfgang Betz 69:22e9b407effa 526 tx_fifo_remaining = 0;
Wolfgang Betz 69:22e9b407effa 527 }
Wolfgang Betz 34:edda6a7238ec 528
Wolfgang Betz 69:22e9b407effa 529 /* The IRQ_RX_DATA_READY notifies a new packet arrived */
Wolfgang Betz 69:22e9b407effa 530 if(x_irq_status.IRQ_RX_DATA_READY) {
Wolfgang Betz 42:92a60a905ee7 531 #ifdef DEBUG_IRQ
Wolfgang Betz 69:22e9b407effa 532 uint32_t *tmp = (uint32_t*)&x_irq_status;
Wolfgang Betz 69:22e9b407effa 533 debug_if(!((*tmp) & IRQ_RX_DATA_READY_MASK), "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 42:92a60a905ee7 534 #endif
Wolfgang Betz 34:edda6a7238ec 535
Wolfgang Betz 69:22e9b407effa 536 if(!_is_receiving) { // spurious irq?!? (betzw: see comments on macro 'RX_FIFO_THR_WA'!)
Wolfgang Betz 44:aedd63cb0ce3 537 #ifdef HEAVY_DEBUG
Wolfgang Betz 69:22e9b407effa 538 debug("\r\n%s (%d): irq=%x\r\n", __func__, __LINE__, *tmp);
Wolfgang Betz 43:a512f909514a 539 #endif
Wolfgang Betz 69:22e9b407effa 540 } else {
Wolfgang Betz 69:22e9b407effa 541 _is_receiving = false; // Finished receiving
Wolfgang Betz 69:22e9b407effa 542 stop_rx_timeout();
Wolfgang Betz 43:a512f909514a 543
Wolfgang Betz 69:22e9b407effa 544 spirit_rx_len = pkt_basic_get_received_pkt_length();
Wolfgang Betz 34:edda6a7238ec 545
Wolfgang Betz 34:edda6a7238ec 546 #ifdef DEBUG_IRQ
Wolfgang Betz 69:22e9b407effa 547 debug_if(!(spirit_rx_len <= MAX_PACKET_LEN), "\r\n%s (%d): irq=%x\r\n", __func__, __LINE__, *tmp);
Wolfgang Betz 34:edda6a7238ec 548 #endif
Wolfgang Betz 34:edda6a7238ec 549
Wolfgang Betz 69:22e9b407effa 550 if(spirit_rx_len <= MAX_PACKET_LEN) {
Wolfgang Betz 69:22e9b407effa 551 uint8_t to_receive = spirit_rx_len - _spirit_rx_pos;
Wolfgang Betz 69:22e9b407effa 552 if(to_receive > 0) {
Wolfgang Betz 69:22e9b407effa 553 spi_read_linear_fifo(to_receive, &spirit_rx_buf[_spirit_rx_pos]);
Wolfgang Betz 69:22e9b407effa 554 _spirit_rx_pos += to_receive;
Wolfgang Betz 69:22e9b407effa 555 }
Wolfgang Betz 69:22e9b407effa 556 }
Wolfgang Betz 43:a512f909514a 557
Wolfgang Betz 69:22e9b407effa 558 cmd_strobe(SPIRIT1_STROBE_FRX);
Wolfgang Betz 43:a512f909514a 559
Wolfgang Betz 69:22e9b407effa 560 last_rssi = qi_get_rssi(); //MGR
Wolfgang Betz 69:22e9b407effa 561 last_sqi = qi_get_sqi(); //MGR
Wolfgang Betz 43:a512f909514a 562
Wolfgang Betz 69:22e9b407effa 563 /* call user callback */
Wolfgang Betz 69:22e9b407effa 564 if((_spirit_rx_pos == spirit_rx_len) && _current_irq_callback) {
Wolfgang Betz 69:22e9b407effa 565 _current_irq_callback(RX_DONE);
Wolfgang Betz 69:22e9b407effa 566 }
Wolfgang Betz 43:a512f909514a 567
Wolfgang Betz 69:22e9b407effa 568 /* Disable handling of other RX flags */
Wolfgang Betz 69:22e9b407effa 569 x_irq_status.IRQ_RX_FIFO_ALMOST_FULL = S_RESET;
Wolfgang Betz 69:22e9b407effa 570 }
Wolfgang Betz 69:22e9b407effa 571 }
Wolfgang Betz 34:edda6a7238ec 572
Wolfgang Betz 47:3a30b960a8c2 573 #ifndef RX_FIFO_THR_WA
Wolfgang Betz 69:22e9b407effa 574 /* RX FIFO almost full */
Wolfgang Betz 69:22e9b407effa 575 if(x_irq_status.IRQ_RX_FIFO_ALMOST_FULL) {
Wolfgang Betz 43:a512f909514a 576 #ifdef DEBUG_IRQ
Wolfgang Betz 69:22e9b407effa 577 uint32_t *tmp = (uint32_t*)&x_irq_status;
Wolfgang Betz 69:22e9b407effa 578 debug_if(!((*tmp) & IRQ_RX_FIFO_ALMOST_FULL_MASK), "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 43:a512f909514a 579 #endif
Wolfgang Betz 69:22e9b407effa 580 if(!_is_receiving) { // spurious irq?!?
Wolfgang Betz 43:a512f909514a 581 #ifdef DEBUG_IRQ
Wolfgang Betz 69:22e9b407effa 582 debug("\r\n%s (%d): irq=%x\r\n", __func__, __LINE__, *tmp);
Wolfgang Betz 43:a512f909514a 583 #endif
Wolfgang Betz 69:22e9b407effa 584 } else {
Wolfgang Betz 69:22e9b407effa 585 uint8_t fifo_available = linear_fifo_read_num_elements_rx_fifo();
Wolfgang Betz 69:22e9b407effa 586 if((fifo_available + _spirit_rx_pos) <= MAX_PACKET_LEN) {
Wolfgang Betz 69:22e9b407effa 587 spi_read_linear_fifo(fifo_available, &spirit_rx_buf[_spirit_rx_pos]);
Wolfgang Betz 69:22e9b407effa 588 _spirit_rx_pos += fifo_available;
Wolfgang Betz 69:22e9b407effa 589 } else {
Wolfgang Betz 48:373e1b7e424f 590 #ifdef DEBUG_IRQ
Wolfgang Betz 69:22e9b407effa 591 debug("\r\n%s (%d): irq=%x\r\n", __func__, __LINE__, *tmp);
Wolfgang Betz 48:373e1b7e424f 592 #endif
Wolfgang Betz 69:22e9b407effa 593 }
Wolfgang Betz 69:22e9b407effa 594 }
Wolfgang Betz 69:22e9b407effa 595 }
Wolfgang Betz 47:3a30b960a8c2 596 #endif // !RX_FIFO_THR_WA
Wolfgang Betz 43:a512f909514a 597
Wolfgang Betz 69:22e9b407effa 598 /* Reception errors */
Wolfgang Betz 69:22e9b407effa 599 if((x_irq_status.IRQ_RX_FIFO_ERROR) || (x_irq_status.IRQ_RX_DATA_DISC)) {
Wolfgang Betz 45:2d01cc9bc761 600 #ifdef DEBUG_IRQ
Wolfgang Betz 69:22e9b407effa 601 uint32_t *tmp = (uint32_t*)&x_irq_status;
Wolfgang Betz 69:22e9b407effa 602 debug("\r\n%s (%d): irq=%x\r\n", __func__, __LINE__, *tmp);
Wolfgang Betz 69:22e9b407effa 603 debug_if(!((*tmp) & (IRQ_RX_FIFO_ERROR_MASK | IRQ_RX_DATA_DISC_MASK)), "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 45:2d01cc9bc761 604 #endif
Wolfgang Betz 69:22e9b407effa 605 rx_timeout_handler();
Wolfgang Betz 69:22e9b407effa 606 if(_spirit_tx_started) {
Wolfgang Betz 69:22e9b407effa 607 _spirit_tx_started = false;
Wolfgang Betz 69:22e9b407effa 608 /* call user callback */
Wolfgang Betz 69:22e9b407effa 609 if(_current_irq_callback) {
Wolfgang Betz 69:22e9b407effa 610 _current_irq_callback(TX_ERR);
Wolfgang Betz 69:22e9b407effa 611 }
Wolfgang Betz 69:22e9b407effa 612 }
Wolfgang Betz 69:22e9b407effa 613 }
Wolfgang Betz 34:edda6a7238ec 614
Wolfgang Betz 69:22e9b407effa 615 /* The IRQ_VALID_SYNC is used to notify a new packet is coming */
Wolfgang Betz 69:22e9b407effa 616 if(x_irq_status.IRQ_VALID_SYNC) {
Wolfgang Betz 42:92a60a905ee7 617 #ifdef DEBUG_IRQ
Wolfgang Betz 69:22e9b407effa 618 uint32_t *tmp = (uint32_t*)&x_irq_status;
Wolfgang Betz 69:22e9b407effa 619 debug_if(!((*tmp) & IRQ_VALID_SYNC_MASK), "\r\nAssert failed in: %s (%d)\r\n", __func__, __LINE__);
Wolfgang Betz 42:92a60a905ee7 620 #endif
Wolfgang Betz 69:22e9b407effa 621 /* betzw - NOTE: there is a race condition between Spirit1 receiving packets and
Wolfgang Betz 69:22e9b407effa 622 * the MCU trying to send a packet, which gets resolved in favor of
Wolfgang Betz 69:22e9b407effa 623 * sending.
Wolfgang Betz 69:22e9b407effa 624 */
Wolfgang Betz 69:22e9b407effa 625 if(_spirit_tx_started) {
Wolfgang Betz 34:edda6a7238ec 626 #ifdef DEBUG_IRQ
Wolfgang Betz 69:22e9b407effa 627 debug("\r\n%s (%d): irq=%x\r\n", __func__, __LINE__, *tmp);
Wolfgang Betz 34:edda6a7238ec 628 #endif
Wolfgang Betz 69:22e9b407effa 629 } else {
Wolfgang Betz 69:22e9b407effa 630 _is_receiving = true;
Wolfgang Betz 69:22e9b407effa 631 start_rx_timeout();
Wolfgang Betz 69:22e9b407effa 632 }
Wolfgang Betz 69:22e9b407effa 633 }
Wolfgang Betz 69:22e9b407effa 634 }