/* ieee802154_rf2xx.c - ATMEL RF2XX IEEE 802.15.4 Driver */ #define DT_DRV_COMPAT atmel_rf2xx /* * Copyright (c) 2019-2020 Gerson Fernando Budke * * SPDX-License-Identifier: Apache-2.0 */ #define LOG_MODULE_NAME ieee802154_rf2xx #define LOG_LEVEL CONFIG_IEEE802154_DRIVER_LOG_LEVEL #include LOG_MODULE_REGISTER(LOG_MODULE_NAME); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ieee802154_rf2xx.h" #include "ieee802154_rf2xx_regs.h" #include "ieee802154_rf2xx_iface.h" #if defined(CONFIG_NET_L2_OPENTHREAD) #include #define RF2XX_OT_PSDU_LENGTH 1280 #define RF2XX_ACK_FRAME_LEN 3 #define RF2XX_ACK_FRAME_TYPE (2 << 0) #define RF2XX_ACK_FRAME_PENDING_BIT (1 << 4) #define RF2XX_FRAME_CTRL_ACK_REQUEST_BIT (1 << 5) static uint8_t rf2xx_ack_psdu[RF2XX_ACK_FRAME_LEN] = { 0 }; static struct net_buf rf2xx_ack_frame = { .data = rf2xx_ack_psdu, .size = RF2XX_ACK_FRAME_LEN, .len = RF2XX_ACK_FRAME_LEN, .__buf = rf2xx_ack_psdu, .frags = NULL, }; static struct net_pkt rf2xx_ack_pkt = { .buffer = &rf2xx_ack_frame, .ieee802154_lqi = 80, .ieee802154_rssi = -40, }; #endif /* CONFIG_NET_L2_OPENTHREAD */ /** * RF output power for RF2xx * * The table below is exact for RF233. For RF231/2 the TX power might * be a bit off, but good enough. * * RF233: http://ww1.microchip.com/downloads/en/devicedoc/atmel-8351-mcu_wireless-at86rf233_datasheet.pdf * 9.2.5 Register Description Register 0x05 (PHY_TX_PWR) * 0x0 = 4dBm .. 0xF = -17dBm * * RF232: http://ww1.microchip.com/downloads/en/DeviceDoc/doc8321.pdf * 9.2.5 Register Description Register 0x05 (PHY_TX_PWR) * 0x0 = 3dBm .. 0xF = -17dBm * * RF231: http://ww1.microchip.com/downloads/en/DeviceDoc/doc8111.pdf * 9.2.5 Register Description Register 0x05 (PHY_TX_PWR) * 0x0 = 3dBm .. 0xF = -17dBm */ #define RF2XX_OUTPUT_POWER_MAX 4 #define RF2XX_OUTPUT_POWER_MIN (-17) /* Lookup table for PHY_TX_PWR register for RF233 */ static const uint8_t phy_tx_pwr_lt[] = { 0xf, /* -17 dBm: -17 */ 0xe, 0xe, 0xe, 0xe, 0xe, /* -12 dBm: -16, -15, -14, -13, -12 */ 0xd, 0xd, 0xd, 0xd, /* -8 dBm: -11, -10, -9, -8 */ 0xc, 0xc, /* -6 dBm: -7, -6 */ 0xb, 0xb, /* -4 dBm: -5, -4 */ 0xa, /* -3 dBm: -3 */ 0x9, /* -2 dBm: -2 */ 0x8, /* -1 dBm: -1 */ 0x7, /* 0.0 dBm: 0 */ 0x6, /* 1 dBm: 1 */ 0x5, /* 2 dBm: 2 */ /* 0x4, */ /* 2.5 dBm */ 0x3, /* 3 dBm: 3 */ /* 0x2, */ /* 3.4 dBm */ /* 0x1, */ /* 3.7 dBm */ 0x0 /* 4 dBm: 4 */ }; /* Radio Transceiver ISR */ static inline void trx_isr_handler(struct device *port, struct gpio_callback *cb, uint32_t pins) { struct rf2xx_context *ctx = CONTAINER_OF(cb, struct rf2xx_context, irq_cb); ARG_UNUSED(port); ARG_UNUSED(pins); k_sem_give(&ctx->trx_isr_lock); } static void rf2xx_trx_set_state(struct device *dev, enum rf2xx_trx_state_cmd_t state) { do { rf2xx_iface_reg_write(dev, RF2XX_TRX_STATE_REG, RF2XX_TRX_PHY_STATE_CMD_FORCE_TRX_OFF); } while (RF2XX_TRX_PHY_STATUS_TRX_OFF != (rf2xx_iface_reg_read(dev, RF2XX_TRX_STATUS_REG) & RF2XX_TRX_PHY_STATUS_MASK)); do { rf2xx_iface_reg_write(dev, RF2XX_TRX_STATE_REG, state); } while (state != (rf2xx_iface_reg_read(dev, RF2XX_TRX_STATUS_REG) & RF2XX_TRX_PHY_STATUS_MASK)); } static void rf2xx_trx_set_tx_state(struct device *dev) { uint8_t status; /** * Ensures that RX automatically ACK will be sent when requested. * Datasheet: Chapter 7.2.3 RX_AACK_ON – Receive with Automatic ACK * Datasheet: Figure 7-13. Timing Example of an RX_AACK Transaction * for Slotted Operation. * * This will create a spin lock that wait transceiver be free from * current receive frame process */ do { status = (rf2xx_iface_reg_read(dev, RF2XX_TRX_STATUS_REG) & RF2XX_TRX_PHY_STATUS_MASK); } while (status == RF2XX_TRX_PHY_STATUS_BUSY_RX_AACK || status == RF2XX_TRX_PHY_STATUS_STATE_TRANSITION); rf2xx_trx_set_state(dev, RF2XX_TRX_PHY_STATE_CMD_TRX_OFF); rf2xx_iface_reg_read(dev, RF2XX_IRQ_STATUS_REG); rf2xx_trx_set_state(dev, RF2XX_TRX_PHY_STATE_CMD_TX_ARET_ON); } static void rf2xx_trx_set_rx_state(struct device *dev) { rf2xx_trx_set_state(dev, RF2XX_TRX_PHY_STATE_CMD_TRX_OFF); rf2xx_iface_reg_read(dev, RF2XX_IRQ_STATUS_REG); /** * Set extended RX mode * Datasheet: chapter 7.2 Extended Operating Mode */ rf2xx_trx_set_state(dev, RF2XX_TRX_PHY_STATE_CMD_RX_AACK_ON); } static void rf2xx_trx_rx(struct device *dev) { struct rf2xx_context *ctx = dev->driver_data; struct net_pkt *pkt = NULL; uint8_t rx_buf[RX2XX_MAX_FRAME_SIZE]; uint8_t pkt_len; uint8_t frame_len; uint8_t trac; /* * The rf2xx frame buffer can have length > 128 bytes. The * net_pkt_alloc_with_buffer allocates max value of 128 bytes. * * This obligate the driver to have rx_buf statically allocated with * RX2XX_MAX_FRAME_SIZE. */ if (ctx->trx_model != RF2XX_TRX_MODEL_231) { pkt_len = ctx->rx_phr; } else { rf2xx_iface_frame_read(dev, rx_buf, RX2XX_FRAME_HEADER_SIZE); pkt_len = rx_buf[RX2XX_FRAME_PHR_INDEX]; } if (pkt_len < RX2XX_FRAME_MIN_PHR_SIZE) { LOG_ERR("invalid RX frame length"); return; } frame_len = RX2XX_FRAME_HEADER_SIZE + pkt_len + RX2XX_FRAME_FOOTER_SIZE; rf2xx_iface_frame_read(dev, rx_buf, frame_len); trac = rx_buf[pkt_len + RX2XX_FRAME_TRAC_INDEX]; trac = (trac >> RF2XX_RX_TRAC_STATUS) & RF2XX_RX_TRAC_BIT_MASK; if (trac == RF2XX_TRX_PHY_STATE_TRAC_INVALID) { LOG_ERR("invalid RX frame"); return; } ctx->pkt_lqi = rx_buf[pkt_len + RX2XX_FRAME_LQI_INDEX]; ctx->pkt_ed = rx_buf[pkt_len + RX2XX_FRAME_ED_INDEX]; if (!IS_ENABLED(CONFIG_IEEE802154_RAW_MODE) && !IS_ENABLED(CONFIG_NET_L2_OPENTHREAD)) { pkt_len -= RX2XX_FRAME_FCS_LENGTH; } pkt = net_pkt_alloc_with_buffer(ctx->iface, pkt_len, AF_UNSPEC, 0, K_NO_WAIT); if (!pkt) { LOG_ERR("No buf available"); return; } memcpy(pkt->buffer->data, rx_buf + RX2XX_FRAME_HEADER_SIZE, pkt_len); net_buf_add(pkt->buffer, pkt_len); net_pkt_set_ieee802154_lqi(pkt, ctx->pkt_lqi); net_pkt_set_ieee802154_rssi(pkt, ctx->pkt_ed + ctx->trx_rssi_base); LOG_DBG("Caught a packet (%02X) (LQI: %02X, RSSI: %d, ED: %02X)", pkt_len, ctx->pkt_lqi, ctx->trx_rssi_base + ctx->pkt_ed, ctx->pkt_ed); if (net_recv_data(ctx->iface, pkt) < 0) { LOG_DBG("Packet dropped by NET stack"); net_pkt_unref(pkt); return; } if (LOG_LEVEL >= LOG_LEVEL_DBG) { log_stack_usage(&ctx->trx_thread); } } static void rf2xx_process_rx_frame(struct device *dev) { struct rf2xx_context *ctx = dev->driver_data; if (ctx->trx_model != RF2XX_TRX_MODEL_231) { rf2xx_trx_rx(dev); } else { /* Ensures that automatically ACK will be sent * when requested */ while (rf2xx_iface_reg_read(dev, RF2XX_TRX_STATUS_REG) == RF2XX_TRX_PHY_STATUS_BUSY_RX_AACK) { ; }; /* Set PLL_ON to avoid transceiver receive * new data until finish reading process */ rf2xx_trx_set_state(dev, RF2XX_TRX_PHY_STATE_CMD_PLL_ON); rf2xx_trx_rx(dev); rf2xx_trx_set_state(dev, RF2XX_TRX_PHY_STATE_CMD_RX_AACK_ON); } } static void rf2xx_process_tx_frame(struct device *dev) { struct rf2xx_context *ctx = dev->driver_data; ctx->trx_trac = (rf2xx_iface_reg_read(dev, RF2XX_TRX_STATE_REG) >> RF2XX_TRAC_STATUS) & 7; k_sem_give(&ctx->trx_tx_sync); rf2xx_trx_set_rx_state(dev); } static void rf2xx_process_trx_end(struct device *dev) { uint8_t trx_status = (rf2xx_iface_reg_read(dev, RF2XX_TRX_STATUS_REG) & RF2XX_TRX_PHY_STATUS_MASK); if (trx_status == RF2XX_TRX_PHY_STATUS_TX_ARET_ON) { rf2xx_process_tx_frame(dev); } else { rf2xx_process_rx_frame(dev); } } static void rf2xx_thread_main(void *arg) { struct device *dev = INT_TO_POINTER(arg); struct rf2xx_context *ctx = dev->driver_data; uint8_t isr_status; while (true) { k_sem_take(&ctx->trx_isr_lock, K_FOREVER); isr_status = rf2xx_iface_reg_read(dev, RF2XX_IRQ_STATUS_REG); /* * IRQ_7 (BAT_LOW) Indicates a supply voltage below the * programmed threshold. 9.5.4 * IRQ_6 (TRX_UR) Indicates a Frame Buffer access * violation. 9.3.3 * IRQ_5 (AMI) Indicates address matching. 8.2 * IRQ_4 (CCA_ED_DONE) Multi-functional interrupt: * 1. AWAKE_END: 7.1.2.5 * • Indicates finished transition to TRX_OFF state * from P_ON, SLEEP, DEEP_SLEEP, or RESET state. * 2. CCA_ED_DONE: 8.5.4 * • Indicates the end of a CCA or ED * measurement. 8.6.4 * IRQ_3 (TRX_END) * RX: Indicates the completion of a frame * reception. 7.1.3 * TX: Indicates the completion of a frame * transmission. 7.1.3 * IRQ_2 (RX_START) Indicates the start of a PSDU * reception; the AT86RF233 state changed to BUSY_RX; * the PHR can be read from Frame Buffer. 7.1.3 * IRQ_1 (PLL_UNLOCK) Indicates PLL unlock. If the radio * transceiver is in BUSY_TX / BUSY_TX_ARET state, the * PA is turned off immediately. 9.7.5 * IRQ_0 (PLL_LOCK) Indicates PLL lock. */ if (isr_status & (1 << RF2XX_RX_START)) { if (ctx->trx_model != RF2XX_TRX_MODEL_231) { rf2xx_iface_sram_read(dev, 0, &ctx->rx_phr, 1); } } else if (isr_status & (1 << RF2XX_TRX_END)) { rf2xx_process_trx_end(dev); } } } static inline uint8_t *get_mac(struct device *dev) { const struct rf2xx_config *conf = dev->config_info; struct rf2xx_context *ctx = dev->driver_data; uint32_t *ptr = (uint32_t *)(ctx->mac_addr); if (!conf->has_mac) { UNALIGNED_PUT(sys_rand32_get(), ptr); ptr = (uint32_t *)(ctx->mac_addr + 4); UNALIGNED_PUT(sys_rand32_get(), ptr); } /* * Clear bit 0 to ensure it isn't a multicast address and set * bit 1 to indicate address is locally administered and may * not be globally unique. */ ctx->mac_addr[0] = (ctx->mac_addr[0] & ~0x01) | 0x02; return ctx->mac_addr; } static enum ieee802154_hw_caps rf2xx_get_capabilities(struct device *dev) { ARG_UNUSED(dev); return IEEE802154_HW_FCS | IEEE802154_HW_PROMISC | IEEE802154_HW_FILTER | IEEE802154_HW_CSMA | IEEE802154_HW_TX_RX_ACK | IEEE802154_HW_2_4_GHZ; } static int rf2xx_cca(struct device *dev) { ARG_UNUSED(dev); return 0; } static int rf2xx_set_channel(struct device *dev, uint16_t channel) { uint8_t reg; if (channel < 11 || channel > 26) { LOG_ERR("Unsupported channel %u", channel); return -EINVAL; } reg = rf2xx_iface_reg_read(dev, RF2XX_PHY_CC_CCA_REG) & ~0x1f; rf2xx_iface_reg_write(dev, RF2XX_PHY_CC_CCA_REG, reg | channel); return 0; } static int rf2xx_set_txpower(struct device *dev, int16_t dbm) { if (dbm < RF2XX_OUTPUT_POWER_MIN) { LOG_INF("TX-power %d dBm below min of %d dBm, using %d dBm", dbm, RF2XX_OUTPUT_POWER_MIN, RF2XX_OUTPUT_POWER_MAX); dbm = RF2XX_OUTPUT_POWER_MIN; } else if (dbm > RF2XX_OUTPUT_POWER_MAX) { LOG_INF("TX-power %d dBm above max of %d dBm, using %d dBm", dbm, RF2XX_OUTPUT_POWER_MIN, RF2XX_OUTPUT_POWER_MAX); dbm = RF2XX_OUTPUT_POWER_MAX; } rf2xx_iface_reg_write(dev, RF2XX_PHY_TX_PWR_REG, phy_tx_pwr_lt[dbm - RF2XX_OUTPUT_POWER_MIN]); return 0; } static int rf2xx_set_ieee_addr(struct device *dev, bool set, const uint8_t *ieee_addr) { const uint8_t *ptr_to_reg = ieee_addr; LOG_DBG("IEEE address %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", ieee_addr[7], ieee_addr[6], ieee_addr[5], ieee_addr[4], ieee_addr[3], ieee_addr[2], ieee_addr[1], ieee_addr[0]); if (set) { for (uint8_t i = 0; i < 8; i++, ptr_to_reg++) { rf2xx_iface_reg_write(dev, (RF2XX_IEEE_ADDR_0_REG + i), *ptr_to_reg); } } else { for (uint8_t i = 0; i < 8; i++) { rf2xx_iface_reg_write(dev, (RF2XX_IEEE_ADDR_0_REG + i), 0); } } return 0; } static int rf2xx_set_short_addr(struct device *dev, bool set, uint16_t short_addr) { uint8_t short_addr_le[2] = { 0xFF, 0xFF }; if (set) { sys_put_le16(short_addr, short_addr_le); } rf2xx_iface_reg_write(dev, RF2XX_SHORT_ADDR_0_REG, short_addr_le[0]); rf2xx_iface_reg_write(dev, RF2XX_SHORT_ADDR_1_REG, short_addr_le[1]); rf2xx_iface_reg_write(dev, RF2XX_CSMA_SEED_0_REG, short_addr_le[0] + short_addr_le[1]); LOG_DBG("Short Address: 0x%02X%02X", short_addr_le[1], short_addr_le[0]); return 0; } static int rf2xx_set_pan_id(struct device *dev, bool set, uint16_t pan_id) { uint8_t pan_id_le[2] = { 0xFF, 0xFF }; if (set) { sys_put_le16(pan_id, pan_id_le); } rf2xx_iface_reg_write(dev, RF2XX_PAN_ID_0_REG, pan_id_le[0]); rf2xx_iface_reg_write(dev, RF2XX_PAN_ID_1_REG, pan_id_le[1]); LOG_DBG("Pan Id: 0x%02X%02X", pan_id_le[1], pan_id_le[0]); return 0; } static int rf2xx_filter(struct device *dev, bool set, enum ieee802154_filter_type type, const struct ieee802154_filter *filter) { LOG_DBG("Applying filter %u", type); if (type == IEEE802154_FILTER_TYPE_IEEE_ADDR) { return rf2xx_set_ieee_addr(dev, set, filter->ieee_addr); } else if (type == IEEE802154_FILTER_TYPE_SHORT_ADDR) { return rf2xx_set_short_addr(dev, set, filter->short_addr); } else if (type == IEEE802154_FILTER_TYPE_PAN_ID) { return rf2xx_set_pan_id(dev, set, filter->pan_id); } return -ENOTSUP; } #if defined(CONFIG_NET_L2_OPENTHREAD) static void rf2xx_handle_ack(struct rf2xx_context *ctx, struct net_buf *frag) { if ((frag->data[0] & RF2XX_FRAME_CTRL_ACK_REQUEST_BIT) == 0) { return; } rf2xx_ack_psdu[0] = RF2XX_ACK_FRAME_TYPE; rf2xx_ack_psdu[2] = frag->data[2]; if (ctx->trx_trac == RF2XX_TRX_PHY_STATE_TRAC_SUCCESS_DATA_PENDING) { rf2xx_ack_psdu[0] |= RF2XX_ACK_FRAME_PENDING_BIT; } net_pkt_cursor_init(&rf2xx_ack_pkt); if (ieee802154_radio_handle_ack(ctx->iface, &rf2xx_ack_pkt) != NET_OK) { LOG_INF("ACK packet not handled."); } } #else #define rf2xx_handle_ack(...) #endif static int rf2xx_tx(struct device *dev, enum ieee802154_tx_mode mode, struct net_pkt *pkt, struct net_buf *frag) { ARG_UNUSED(pkt); struct rf2xx_context *ctx = dev->driver_data; int response = 0; if (mode != IEEE802154_TX_MODE_CSMA_CA) { NET_ERR("TX mode %d not supported", mode); return -ENOTSUP; } rf2xx_trx_set_tx_state(dev); rf2xx_iface_reg_read(dev, RF2XX_IRQ_STATUS_REG); k_sem_reset(&ctx->trx_tx_sync); rf2xx_iface_frame_write(dev, frag->data, frag->len); rf2xx_iface_phy_tx_start(dev); k_sem_take(&ctx->trx_tx_sync, K_FOREVER); switch (ctx->trx_trac) { /* Channel is still busy after attempting MAX_CSMA_RETRIES of * CSMA-CA */ case RF2XX_TRX_PHY_STATE_TRAC_CHANNEL_ACCESS_FAILED: response = -EBUSY; break; /* No acknowledgment frames were received during all retry * attempts */ case RF2XX_TRX_PHY_STATE_TRAC_NO_ACK: response = -EAGAIN; break; /* Transaction not yet finished */ case RF2XX_TRX_PHY_STATE_TRAC_INVALID: response = -EINTR; break; /* RF2XX_TRX_PHY_STATE_TRAC_SUCCESS: * The transaction was responded to by a valid ACK, or, if no * ACK is requested, after a successful frame transmission. * * RF2XX_TRX_PHY_STATE_TRAC_SUCCESS_DATA_PENDING: * Equivalent to SUCCESS and indicating that the “Frame * Pending” bit (see Section 8.1.2.2) of the received * acknowledgment frame was set. */ default: rf2xx_handle_ack(ctx, frag); break; } return response; } static int rf2xx_start(struct device *dev) { const struct rf2xx_config *conf = dev->config_info; struct rf2xx_context *ctx = dev->driver_data; rf2xx_trx_set_state(dev, RF2XX_TRX_PHY_STATE_CMD_TRX_OFF); rf2xx_iface_reg_read(dev, RF2XX_IRQ_STATUS_REG); gpio_pin_interrupt_configure(ctx->irq_gpio, conf->irq.pin, GPIO_INT_EDGE_TO_ACTIVE); rf2xx_trx_set_rx_state(dev); return 0; } static int rf2xx_stop(struct device *dev) { const struct rf2xx_config *conf = dev->config_info; struct rf2xx_context *ctx = dev->driver_data; gpio_pin_interrupt_configure(ctx->irq_gpio, conf->irq.pin, GPIO_INT_DISABLE); rf2xx_trx_set_state(dev, RF2XX_TRX_PHY_STATE_CMD_TRX_OFF); rf2xx_iface_reg_read(dev, RF2XX_IRQ_STATUS_REG); return 0; } int rf2xx_configure(struct device *dev, enum ieee802154_config_type type, const struct ieee802154_config *config) { ARG_UNUSED(dev); ARG_UNUSED(type); ARG_UNUSED(config); return 0; } static int power_on_and_setup(struct device *dev) { const struct rf2xx_config *conf = dev->config_info; struct rf2xx_context *ctx = dev->driver_data; uint8_t config; rf2xx_iface_phy_rst(dev); /* Sync transceiver state */ do { rf2xx_iface_reg_write(dev, RF2XX_TRX_STATE_REG, RF2XX_TRX_PHY_STATE_CMD_TRX_OFF); } while (RF2XX_TRX_PHY_STATUS_TRX_OFF != (rf2xx_iface_reg_read(dev, RF2XX_TRX_STATUS_REG) & RF2XX_TRX_PHY_STATUS_MASK)); /* get device identification */ ctx->trx_model = rf2xx_iface_reg_read(dev, RF2XX_PART_NUM_REG); ctx->trx_version = rf2xx_iface_reg_read(dev, RF2XX_VERSION_NUM_REG); /** * Valid transceiver are: * 231-Rev-A (Version 0x02) * 232-Rev-A (Version 0x02) * 233-Rev-A (Version 0x01) (Warning) * 233-Rev-B (Version 0x02) */ if (ctx->trx_model != RF2XX_TRX_MODEL_231 && ctx->trx_model != RF2XX_TRX_MODEL_232 && ctx->trx_model != RF2XX_TRX_MODEL_233) { LOG_DBG("Invalid or not supported transceiver"); return -ENODEV; } if (ctx->trx_version < 0x02) { LOG_DBG("Transceiver is old and unstable release"); } /* Set RSSI base */ if (ctx->trx_model == RF2XX_TRX_MODEL_233) { ctx->trx_rssi_base = -94; } else if (ctx->trx_model == RF2XX_TRX_MODEL_231) { ctx->trx_rssi_base = -91; } else { ctx->trx_rssi_base = -90; } /* Configure PHY behaviour */ config = (1 << RF2XX_TX_AUTO_CRC_ON) | (3 << RF2XX_SPI_CMD_MODE) | (1 << RF2XX_IRQ_MASK_MODE); rf2xx_iface_reg_write(dev, RF2XX_TRX_CTRL_1_REG, config); config = (1 << RF2XX_RX_SAFE_MODE); if (ctx->trx_model != RF2XX_TRX_MODEL_232) { config |= (1 << RF2XX_OQPSK_SCRAM_EN); } rf2xx_iface_reg_write(dev, RF2XX_TRX_CTRL_2_REG, config); /* Configure INT behaviour */ config = (1 << RF2XX_RX_START) | (1 << RF2XX_TRX_END); rf2xx_iface_reg_write(dev, RF2XX_IRQ_MASK_REG, config); gpio_init_callback(&ctx->irq_cb, trx_isr_handler, BIT(conf->irq.pin)); gpio_add_callback(ctx->irq_gpio, &ctx->irq_cb); return 0; } static inline int configure_gpios(struct device *dev) { const struct rf2xx_config *conf = dev->config_info; struct rf2xx_context *ctx = dev->driver_data; /* Chip IRQ line */ ctx->irq_gpio = device_get_binding(conf->irq.devname); if (ctx->irq_gpio == NULL) { LOG_ERR("Failed to get instance of %s device", conf->irq.devname); return -EINVAL; } gpio_pin_configure(ctx->irq_gpio, conf->irq.pin, conf->irq.flags | GPIO_INPUT); gpio_pin_interrupt_configure(ctx->irq_gpio, conf->irq.pin, GPIO_INT_EDGE_TO_ACTIVE); /* Chip RESET line */ ctx->reset_gpio = device_get_binding(conf->reset.devname); if (ctx->reset_gpio == NULL) { LOG_ERR("Failed to get instance of %s device", conf->reset.devname); return -EINVAL; } gpio_pin_configure(ctx->reset_gpio, conf->reset.pin, conf->reset.flags | GPIO_OUTPUT_INACTIVE); /* Chip SLPTR line */ ctx->slptr_gpio = device_get_binding(conf->slptr.devname); if (ctx->slptr_gpio == NULL) { LOG_ERR("Failed to get instance of %s device", conf->slptr.devname); return -EINVAL; } gpio_pin_configure(ctx->slptr_gpio, conf->slptr.pin, conf->slptr.flags | GPIO_OUTPUT_INACTIVE); /* Chip DIG2 line (Optional feature) */ ctx->dig2_gpio = device_get_binding(conf->dig2.devname); if (ctx->dig2_gpio != NULL) { LOG_INF("Optional instance of %s device activated", conf->dig2.devname); gpio_pin_configure(ctx->dig2_gpio, conf->dig2.pin, conf->dig2.flags | GPIO_INPUT); gpio_pin_interrupt_configure(ctx->dig2_gpio, conf->dig2.pin, GPIO_INT_EDGE_TO_ACTIVE); } /* Chip CLKM line (Optional feature) */ ctx->clkm_gpio = device_get_binding(conf->clkm.devname); if (ctx->clkm_gpio != NULL) { LOG_INF("Optional instance of %s device activated", conf->clkm.devname); gpio_pin_configure(ctx->clkm_gpio, conf->clkm.pin, conf->clkm.flags | GPIO_INPUT); } return 0; } static inline int configure_spi(struct device *dev) { struct rf2xx_context *ctx = dev->driver_data; const struct rf2xx_config *conf = dev->config_info; /* Get SPI Driver Instance*/ ctx->spi = device_get_binding(conf->spi.devname); if (!ctx->spi) { LOG_ERR("Failed to get instance of %s device", conf->spi.devname); return -ENODEV; } /* Apply SPI Config: 8-bit, MSB First, MODE-0 */ ctx->spi_cfg.operation = SPI_WORD_SET(8) | SPI_TRANSFER_MSB; ctx->spi_cfg.slave = conf->spi.addr; ctx->spi_cfg.frequency = conf->spi.freq; ctx->spi_cfg.cs = NULL; /* * Get SPI Chip Select Instance * * This is an optinal feature configured on DTS. Some SPI controllers * automatically set CS line by device slave address. Check your SPI * device driver to understand if you need this option enabled. */ ctx->spi_cs.gpio_dev = device_get_binding(conf->spi.cs.devname); if (ctx->spi_cs.gpio_dev) { ctx->spi_cs.gpio_pin = conf->spi.cs.pin; ctx->spi_cs.gpio_dt_flags = conf->spi.cs.flags; ctx->spi_cs.delay = 0U; ctx->spi_cfg.cs = &ctx->spi_cs; LOG_DBG("SPI GPIO CS configured on %s:%u", conf->spi.cs.devname, conf->spi.cs.pin); } return 0; } static int rf2xx_init(struct device *dev) { struct rf2xx_context *ctx = dev->driver_data; const struct rf2xx_config *conf = dev->config_info; char thread_name[20]; LOG_DBG("\nInitialize RF2XX Transceiver\n"); k_sem_init(&ctx->trx_tx_sync, 0, 1); k_sem_init(&ctx->trx_isr_lock, 0, 1); if (configure_gpios(dev) != 0) { LOG_ERR("Configuring GPIOS failed"); return -EIO; } if (configure_spi(dev) != 0) { LOG_ERR("Configuring SPI failed"); return -EIO; } LOG_DBG("GPIO and SPI configured"); if (power_on_and_setup(dev) != 0) { LOG_ERR("Configuring RF2XX failed"); return -EIO; } k_thread_create(&ctx->trx_thread, ctx->trx_stack, CONFIG_IEEE802154_RF2XX_RX_STACK_SIZE, (k_thread_entry_t) rf2xx_thread_main, dev, NULL, NULL, K_PRIO_COOP(2), 0, K_NO_WAIT); snprintk(thread_name, sizeof(thread_name), "rf2xx_trx [%d]", conf->inst); k_thread_name_set(&ctx->trx_thread, thread_name); return 0; } static void rf2xx_iface_init(struct net_if *iface) { struct device *dev = net_if_get_device(iface); struct rf2xx_context *ctx = dev->driver_data; uint8_t *mac = get_mac(dev); net_if_set_link_addr(iface, mac, 8, NET_LINK_IEEE802154); ctx->iface = iface; ieee802154_init(iface); } static struct ieee802154_radio_api rf2xx_radio_api = { .iface_api.init = rf2xx_iface_init, .get_capabilities = rf2xx_get_capabilities, .cca = rf2xx_cca, .set_channel = rf2xx_set_channel, .filter = rf2xx_filter, .set_txpower = rf2xx_set_txpower, .tx = rf2xx_tx, .start = rf2xx_start, .stop = rf2xx_stop, .configure = rf2xx_configure, }; #if !defined(CONFIG_IEEE802154_RAW_MODE) #if defined(CONFIG_NET_L2_IEEE802154) #define L2 IEEE802154_L2 #define L2_CTX_TYPE NET_L2_GET_CTX_TYPE(IEEE802154_L2) #define MTU RF2XX_MAX_PSDU_LENGTH #elif defined(CONFIG_NET_L2_OPENTHREAD) #define L2 OPENTHREAD_L2 #define L2_CTX_TYPE NET_L2_GET_CTX_TYPE(OPENTHREAD_L2) #define MTU RF2XX_OT_PSDU_LENGTH #endif #endif /* CONFIG_IEEE802154_RAW_MODE */ /* * Optional features place holders, get a 0 if the "gpio" doesn't exist */ #define DRV_INST_GPIO_LABEL(n, gpio_pha) \ UTIL_AND(DT_INST_NODE_HAS_PROP(n, gpio_pha), \ DT_INST_GPIO_LABEL(n, gpio_pha)) #define DRV_INST_GPIO_PIN(n, gpio_pha) \ UTIL_AND(DT_INST_NODE_HAS_PROP(n, gpio_pha), \ DT_INST_GPIO_PIN(n, gpio_pha)) #define DRV_INST_GPIO_FLAGS(n, gpio_pha) \ UTIL_AND(DT_INST_NODE_HAS_PROP(n, gpio_pha), \ DT_INST_GPIO_FLAGS(n, gpio_pha)) #define DRV_INST_SPI_DEV_CS_GPIOS_LABEL(n) \ UTIL_AND(DT_INST_SPI_DEV_HAS_CS_GPIOS(n), \ DT_INST_SPI_DEV_CS_GPIOS_LABEL(n)) #define DRV_INST_SPI_DEV_CS_GPIOS_PIN(n) \ UTIL_AND(DT_INST_SPI_DEV_HAS_CS_GPIOS(n), \ DT_INST_SPI_DEV_CS_GPIOS_PIN(n)) #define DRV_INST_SPI_DEV_CS_GPIOS_FLAGS(n) \ UTIL_AND(DT_INST_SPI_DEV_HAS_CS_GPIOS(n), \ DT_INST_SPI_DEV_CS_GPIOS_FLAGS(n)) #define DRV_INST_LOCAL_MAC_ADDRESS(n) \ UTIL_AND(DT_INST_NODE_HAS_PROP(n, local_mac_address), \ UTIL_AND(DT_INST_PROP_LEN(n, local_mac_address) == 8, \ DT_INST_PROP(n, local_mac_address))) #define IEEE802154_RF2XX_DEVICE_CONFIG(n) \ static const struct rf2xx_config rf2xx_ctx_config_##n = { \ .inst = n, \ .has_mac = DT_INST_NODE_HAS_PROP(n, local_mac_address), \ \ .irq.devname = DRV_INST_GPIO_LABEL(n, irq_gpios), \ .irq.pin = DRV_INST_GPIO_PIN(n, irq_gpios), \ .irq.flags = DRV_INST_GPIO_FLAGS(n, irq_gpios), \ \ .reset.devname = DRV_INST_GPIO_LABEL(n, reset_gpios), \ .reset.pin = DRV_INST_GPIO_PIN(n, reset_gpios), \ .reset.flags = DRV_INST_GPIO_FLAGS(n, reset_gpios), \ \ .slptr.devname = DRV_INST_GPIO_LABEL(n, slptr_gpios), \ .slptr.pin = DRV_INST_GPIO_PIN(n, slptr_gpios), \ .slptr.flags = DRV_INST_GPIO_FLAGS(n, slptr_gpios), \ \ .dig2.devname = DRV_INST_GPIO_LABEL(n, dig2_gpios), \ .dig2.pin = DRV_INST_GPIO_PIN(n, dig2_gpios), \ .dig2.flags = DRV_INST_GPIO_FLAGS(n, dig2_gpios), \ \ .clkm.devname = DRV_INST_GPIO_LABEL(n, clkm_gpios), \ .clkm.pin = DRV_INST_GPIO_PIN(n, clkm_gpios), \ .clkm.flags = DRV_INST_GPIO_FLAGS(n, clkm_gpios), \ \ .spi.devname = DT_INST_BUS_LABEL(n), \ .spi.addr = DT_INST_REG_ADDR(n), \ .spi.freq = DT_INST_PROP(n, spi_max_frequency), \ .spi.cs.devname = DRV_INST_SPI_DEV_CS_GPIOS_LABEL(n), \ .spi.cs.pin = DRV_INST_SPI_DEV_CS_GPIOS_PIN(n), \ .spi.cs.flags = DRV_INST_SPI_DEV_CS_GPIOS_FLAGS(n), \ } #define IEEE802154_RF2XX_DEVICE_DATA(n) \ static struct rf2xx_context rf2xx_ctx_data_##n = { \ .mac_addr = DRV_INST_LOCAL_MAC_ADDRESS(n) \ } #define IEEE802154_RF2XX_RAW_DEVICE_INIT(n) \ DEVICE_AND_API_INIT( \ rf2xx_##n, \ DT_INST_LABEL(n), \ &rf2xx_init, \ &rf2xx_ctx_data_##n, \ &rf2xx_ctx_config_##n, \ POST_KERNEL, \ CONFIG_IEEE802154_RF2XX_INIT_PRIO, \ &rf2xx_radio_api) #define IEEE802154_RF2XX_NET_DEVICE_INIT(n) \ NET_DEVICE_INIT( \ rf2xx_##n, \ DT_INST_LABEL(n), \ &rf2xx_init, \ device_pm_control_nop, \ &rf2xx_ctx_data_##n, \ &rf2xx_ctx_config_##n, \ CONFIG_IEEE802154_RF2XX_INIT_PRIO, \ &rf2xx_radio_api, \ L2, \ L2_CTX_TYPE, \ MTU) #define IEEE802154_RF2XX_INIT(inst) \ IEEE802154_RF2XX_DEVICE_CONFIG(inst); \ IEEE802154_RF2XX_DEVICE_DATA(inst); \ \ COND_CODE_1(CONFIG_IEEE802154_RAW_MODE, \ (IEEE802154_RF2XX_RAW_DEVICE_INIT(inst);), \ (IEEE802154_RF2XX_NET_DEVICE_INIT(inst);)) DT_INST_FOREACH_STATUS_OKAY(IEEE802154_RF2XX_INIT)