Diff: easy-connect/stm-spirit1-rf-driver/source/NanostackRfPhySpirit1.cpp

Revision:

0:24d3eb812fd4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/easy-connect/stm-spirit1-rf-driver/source/NanostackRfPhySpirit1.cpp	Wed Sep 05 14:28:24 2018 +0000
@@ -0,0 +1,830 @@
+#include "NanostackRfPhySpirit1.h"
+
+#ifdef MBED_CONF_NANOSTACK_CONFIGURATION
+#if MBED_CONF_RTOS_PRESENT
+
+#include "SimpleSpirit1.h"
+#include "nanostack/platform/arm_hal_phy.h"
+#include "platform/arm_hal_interrupt.h"
+
+#include "mbed_trace.h"
+#define TRACE_GROUP  "SPIRIT"
+
+/* Define beyond macro if you want to perform heavy debug tracing (includes tracing in IRQ context) */
+// #define HEAVY_TRACING
+
+static phy_device_driver_s device_driver;
+static int8_t rf_radio_driver_id = -1;
+
+const phy_rf_channel_configuration_s phy_subghz = {868000000, 1000000, 250000, 11, M_GFSK};
+
+static phy_device_channel_page_s phy_channel_pages[] = {
+        {CHANNEL_PAGE_2, &phy_subghz},
+        {CHANNEL_PAGE_0, NULL}
+};
+
+static uint8_t tx_sequence = 0xff;
+static uint8_t mac_tx_handle = 0;
+
+static SimpleSpirit1 *rf_device = NULL;
+static uint8_t rf_rx_buf[MAX_PACKET_LEN];
+
+static uint16_t stored_short_adr;
+static uint16_t stored_pan_id;
+static uint8_t stored_mac_address[8] = MBED_CONF_SPIRIT1_MAC_ADDRESS;
+
+#define RF_SIG_ACK_NEEDED (1<<0)
+#define RF_SIG_CB_TX_DONE (1<<1)
+#define RF_SIG_CB_RX_RCVD (1<<2)
+static SingletonPtr<Thread> rf_ack_sender;
+static volatile uint8_t rf_rx_sequence;
+static volatile bool rf_ack_sent = false;
+static volatile bool expecting_ack = false;
+static volatile bool need_ack = false;
+
+/* MAC frame helper macros */
+#define MAC_FCF_FRAME_TYPE_MASK         0x0007
+#define MAC_FCF_FRAME_TYPE_SHIFT        0
+#define MAC_FCF_SECURITY_BIT_MASK       0x0008
+#define MAC_FCF_SECURITY_BIT_SHIFT      3
+#define MAC_FCF_PENDING_BIT_MASK        0x0010
+#define MAC_FCF_PENDING_BIT_SHIFT       4
+#define MAC_FCF_ACK_REQ_BIT_MASK        0x0020
+#define MAC_FCF_ACK_REQ_BIT_SHIFT       5
+#define MAC_FCF_INTRA_PANID_MASK        0x0040
+#define MAC_FCF_INTRA_PANID_SHIFT       6
+#define MAC_FCF_DST_ADDR_MASK           0x0c00
+#define MAC_FCF_DST_ADDR_SHIFT          10
+#define MAC_FCF_VERSION_MASK            0x3000
+#define MAC_FCF_VERSION_SHIFT           12
+#define MAC_FCF_SRC_ADDR_MASK           0xc000
+#define MAC_FCF_SRC_ADDR_SHIFT          14
+
+/* MAC supported frame types */
+#define FC_BEACON_FRAME         0x00
+#define FC_DATA_FRAME           0x01
+#define FC_ACK_FRAME            0x02
+#define FC_CMD_FRAME            0x03
+
+static inline void rf_if_lock(void)
+{
+    platform_enter_critical();
+}
+
+static inline void rf_if_unlock(void)
+{
+    platform_exit_critical();
+}
+
+static inline uint16_t rf_read_16_bit(uint8_t *data_ptr) { // little-endian
+    uint16_t ret;
+
+    ret = ((uint16_t)data_ptr[0]) + (((uint16_t)data_ptr[1]) << 8);
+    return ret;
+}
+
+/* Note: we are in IRQ context */
+static inline void rf_send_signal(int32_t signal) {
+#ifdef HEAVY_TRACING
+    tr_info("%s (%d): %d", __func__, __LINE__, signal);
+#endif
+    rf_ack_sender->signal_set(signal);
+}
+
+static volatile phy_link_tx_status_e phy_status;
+/* Note: we are in IRQ context */
+static void rf_handle_ack(uint8_t seq_number)
+{
+    /*Received ACK sequence must be equal with transmitted packet sequence*/
+    if(tx_sequence == seq_number)
+    {
+#ifdef HEAVY_TRACING
+        tr_info("%s (%d)", __func__, __LINE__);
+#endif
+
+        /*Call PHY TX Done API*/
+        if(device_driver.phy_tx_done_cb){
+            phy_status = PHY_LINK_TX_DONE;
+            rf_send_signal(RF_SIG_CB_TX_DONE);
+        }
+    } else {
+#ifdef HEAVY_TRACING
+        tr_info("%s (%d)", __func__, __LINE__);
+#endif
+
+        /*Call PHY TX Done API*/
+        if(device_driver.phy_tx_done_cb){
+            phy_status = PHY_LINK_TX_FAIL;
+            rf_send_signal(RF_SIG_CB_TX_DONE);
+        }
+    }
+}
+
+/* Note: we are in IRQ context */
+static inline bool rf_check_mac_address(uint8_t *dest) {
+    for(int i = 0; i < 8; i++) {
+        if(dest[i] != stored_mac_address[7-i]) {
+#ifdef HEAVY_TRACING
+            tr_debug("%s (%d): i=%d, dest=%x, stored=%x",
+                    __func__, __LINE__,
+                    i, dest[i], stored_mac_address[7-i]);
+#endif
+            return false;
+        }
+    }
+    return true;
+}
+
+/* Note: we are in IRQ context */
+/* Returns true if packet should be accepted */
+static bool rf_check_destination(int len, uint8_t *ack_requested) {
+    uint8_t frame_type;
+    uint16_t dst_pan_id;
+    uint16_t dst_short_adr;
+    uint8_t dst_addr_mode = 0x0; /*0x00 = no address 0x01 = reserved 0x02 = 16-bit short address 0x03 = 64-bit extended address */
+    uint8_t src_addr_mode = 0x0; /*0x00 = no address 0x01 = reserved 0x02 = 16-bit short address 0x03 = 64-bit extended address */
+    uint8_t min_size = 3; // FCF & SeqNr
+    bool ret = false;
+#if defined(HEAVY_TRACING)
+    bool panid_compr = false;
+#endif
+
+    if(len < 3) {
+        tr_debug("%s (%d)", __func__, __LINE__);
+        return false;
+    }
+
+    uint16_t fcf = rf_read_16_bit(rf_rx_buf);
+    frame_type = ((fcf & MAC_FCF_FRAME_TYPE_MASK) >> MAC_FCF_FRAME_TYPE_SHIFT);
+    (*ack_requested) = ((fcf & MAC_FCF_ACK_REQ_BIT_MASK) >> MAC_FCF_ACK_REQ_BIT_SHIFT);
+    dst_addr_mode = ((fcf & MAC_FCF_DST_ADDR_MASK) >> MAC_FCF_DST_ADDR_SHIFT);
+    src_addr_mode = ((fcf & MAC_FCF_SRC_ADDR_MASK) >> MAC_FCF_SRC_ADDR_SHIFT);
+#if defined(HEAVY_TRACING)
+    panid_compr = ((fcf & MAC_FCF_INTRA_PANID_MASK) >> MAC_FCF_INTRA_PANID_SHIFT);
+#endif
+
+#ifdef HEAVY_TRACING
+    tr_info("%s (%d): len=%d, ftype=%x, snr=%x, ack=%d, dst=%x, src=%x, intra=%d", __func__, __LINE__, len, frame_type,
+            rf_rx_buf[2], (*ack_requested), dst_addr_mode, src_addr_mode, panid_compr);
+#endif
+
+    if(frame_type == FC_ACK_FRAME) { // betzw: we support up to two different forms of ACK frames!
+        if((len == 3) && (dst_addr_mode == 0x0) && (src_addr_mode == 0x0)) {
+            ret = true;
+        }
+
+#ifdef HEAVY_TRACING
+        tr_info("%s (%d): ret=%d", __func__, __LINE__, ret);
+#endif
+        (*ack_requested) = 0;  // Never acknowledge ACK frames
+        return ret;
+    }
+
+    switch(dst_addr_mode) {
+        case 0x00:
+            ret = true; // no check possible;
+            break;
+
+        case 0x02:
+            min_size += 4; // pan id + short dest adr
+
+            if(len < 5) {
+#ifdef HEAVY_TRACING
+                tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+                return false;
+            }
+
+            dst_pan_id = rf_read_16_bit(&rf_rx_buf[3]);
+            if((dst_pan_id != stored_pan_id) && (dst_pan_id != 0xFFFF)) {
+#ifdef HEAVY_TRACING
+                tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+                return false;
+            }
+
+            if(len < 7) {
+#ifdef HEAVY_TRACING
+                tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+                return false;
+            }
+
+            dst_short_adr = rf_read_16_bit(&rf_rx_buf[5]);
+            if((dst_short_adr != stored_short_adr) && (dst_short_adr != 0xFFFF)) {
+#ifdef HEAVY_TRACING
+                tr_debug("%s (%d): %d!=%d", __func__, __LINE__, dst_short_adr, stored_short_adr);
+#endif
+                return false;
+            }
+
+            ret = true;
+            break;
+
+        case 0x03:
+            min_size += 10; // pan id + dest mac addr
+
+            if(len < 5) {
+#ifdef HEAVY_TRACING
+                tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+                return false;
+            }
+
+            dst_pan_id = rf_read_16_bit(&rf_rx_buf[3]);
+            if((dst_pan_id != stored_pan_id) && (dst_pan_id != 0xFFFF)) {
+#ifdef HEAVY_TRACING
+                tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+                return false;
+            }
+
+            if(len < 13) {
+#ifdef HEAVY_TRACING
+                tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+                return false;
+            }
+
+            ret = rf_check_mac_address(&rf_rx_buf[5]);
+
+            if(!ret) {
+#ifdef HEAVY_TRACING
+                tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+                return false;
+            }
+
+            break;
+
+        default:
+            /* not supported */
+#ifdef HEAVY_TRACING
+            tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+            return false;
+    }
+
+    if(ret && (*ack_requested)) {
+        rf_rx_sequence = rf_rx_buf[2];
+    }
+
+#ifdef HEAVY_TRACING
+    tr_info("%s (%d), ret=%d, ack=%d", __func__, __LINE__, ret, (*ack_requested));
+#endif
+    return ret;
+}
+
+static uint16_t rf_buffer_len = 0;
+static uint8_t rf_sqi;
+static int8_t rf_rssi;
+/* Note: we are in IRQ context */
+static inline void rf_handle_rx_end(void)
+{
+    uint8_t ack_requested = 0;
+
+    /* Get received data */
+    rf_buffer_len = rf_device->read(rf_rx_buf, MAX_PACKET_LEN);
+    if(!rf_buffer_len)
+        return;
+
+#ifdef HEAVY_TRACING
+    tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+
+    /* Check if packet should be accepted */
+    if(!rf_check_destination(rf_buffer_len, &ack_requested)) {
+#ifdef HEAVY_TRACING
+        tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+        return;
+    }
+
+    /* If waiting for ACK, check here if the packet is an ACK to a message previously sent */
+    if(expecting_ack) {
+        uint16_t fcf = rf_read_16_bit(rf_rx_buf);
+        expecting_ack = false;
+
+        if(((fcf & MAC_FCF_FRAME_TYPE_MASK) >> MAC_FCF_FRAME_TYPE_SHIFT) == FC_ACK_FRAME) {
+            /*Send sequence number in ACK handler*/
+#ifdef HEAVY_TRACING
+            tr_debug("%s (%d), len=%u", __func__, __LINE__, (unsigned int)rf_buffer_len);
+#endif
+            rf_handle_ack(rf_rx_buf[2]);
+            return;
+        } else {
+            /*Call PHY TX Done API*/
+            if(device_driver.phy_tx_done_cb){
+                phy_status = PHY_LINK_TX_FAIL;
+                rf_send_signal(RF_SIG_CB_TX_DONE);
+            }
+        }
+    }
+
+    /* Kick off ACK sending */
+    if(ack_requested) {
+#ifdef HEAVY_TRACING
+        tr_debug("%s (%d), len=%u", __func__, __LINE__, (unsigned int)rf_buffer_len);
+#endif
+        rf_send_signal(RF_SIG_ACK_NEEDED);
+    }
+
+    /* Get link information */
+    rf_rssi = (int8_t)rf_device->get_last_rssi_dbm();
+    rf_sqi = (uint8_t)rf_device->get_last_sqi(); // use SQI as link quality
+
+    /* Note: Checksum of the packet must be checked and removed before entering here */
+    /* TODO - betzw: what to do? */
+
+#ifdef HEAVY_TRACING
+    tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+
+    /* Send received data and link information to the network stack */
+    if( device_driver.phy_rx_cb ){
+        rf_send_signal(RF_SIG_CB_RX_RCVD);
+    }
+}
+
+/* Note: we are in IRQ context */
+static inline void rf_handle_tx_end(void)
+{
+    /* Check if this is an ACK sending which is still pending */
+    if(rf_ack_sent) {
+        rf_ack_sent = false;
+#ifdef HEAVY_TRACING
+        tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+        return; // no need to inform stack
+    }
+
+    /* Transform `need_ack` in `expecting_ack` */
+    if(need_ack) {
+        need_ack = false;
+        expecting_ack = true;
+    }
+
+    /*Call PHY TX Done API*/
+    if(device_driver.phy_tx_done_cb){
+        phy_status = PHY_LINK_TX_SUCCESS;
+        rf_send_signal(RF_SIG_CB_TX_DONE);
+    }
+}
+
+/* Note: we might be in IRQ context */
+static inline void rf_handle_tx_err(phy_link_tx_status_e phy_val = PHY_LINK_TX_FAIL) {
+    /*Call PHY TX Done API*/
+    if(device_driver.phy_tx_done_cb){
+        need_ack = false;
+        phy_status = phy_val;
+        rf_send_signal(RF_SIG_CB_TX_DONE);
+    }
+}
+
+/* Note: we are in IRQ context */
+static void rf_callback_func(int event) {
+    switch(event) {
+        case SimpleSpirit1::RX_DONE:
+            rf_handle_rx_end();
+            break;
+        case SimpleSpirit1::TX_DONE:
+            rf_handle_tx_end();
+            break;
+        case SimpleSpirit1::TX_ERR:
+#ifdef HEAVY_TRACING
+            tr_debug("%s (%d): TX_ERR!!!", __func__, __LINE__);
+#endif
+            rf_handle_tx_err();
+            break;
+    }
+}
+
+static int8_t rf_trigger_send(uint8_t *data_ptr, uint16_t data_length, uint8_t tx_handle, data_protocol_e data_protocol)
+{
+#ifndef NDEBUG
+    debug_if(!(data_length >= 3), "\r\nassert failed in: %s (%d)\r\n", __func__, __LINE__);
+#endif
+
+    /* Give 'rf_ack_sender' a better chance to run */
+    Thread::yield();
+
+    /* Get Lock */
+    rf_if_lock();
+
+    /*Check if transmitter is busy*/
+    if(rf_device->is_receiving()) { /* betzw - WAS: (rf_device->channel_clear() != 0)), do NOT use this but rather study and enable automatic CCA */
+#ifdef HEAVY_TRACING
+        tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+
+        /* Release Lock */
+        rf_if_unlock();
+
+        /*Return busy*/
+        return -1;
+    } else {
+        uint16_t fcf = rf_read_16_bit(data_ptr);
+
+        /*Check if transmitted data needs to be acked*/
+        if((fcf & MAC_FCF_ACK_REQ_BIT_MASK) >> MAC_FCF_ACK_REQ_BIT_SHIFT)
+            need_ack = true;
+        else
+            need_ack = false;
+
+        /*Store the sequence number for ACK handling*/
+        tx_sequence = *(data_ptr + 2);
+
+        /*Store TX handle*/
+        mac_tx_handle = tx_handle;
+
+#ifdef HEAVY_TRACING
+        tr_info("%s (%d), len=%d, tx_handle=%x, tx_seq=%x, need_ack=%d (%x:%x, %x:%x, %x:%x, %x:%x)", __func__, __LINE__,
+                data_length, tx_handle, tx_sequence, need_ack,
+                data_ptr[3], data_ptr[4], data_ptr[5], data_ptr[6],
+                data_ptr[7], data_ptr[8], data_ptr[9], data_ptr[10]);
+#endif
+
+        /*Send the packet*/
+        int ret = rf_device->send(data_ptr, data_length);
+        if(ret != RADIO_TX_OK) {
+            rf_handle_tx_err(PHY_LINK_CCA_FAIL);
+        }
+
+        /* Release Lock */
+        rf_if_unlock();
+    }
+
+    /*Return success*/
+    return 0;
+}
+
+static int8_t rf_interface_state_control(phy_interface_state_e new_state, uint8_t rf_channel)
+{
+    int8_t ret_val = 0;
+    switch (new_state)
+    {
+        /*Reset PHY driver and set to idle*/
+        case PHY_INTERFACE_RESET:
+            tr_debug("%s (%d)", __func__, __LINE__);
+            rf_device->reset_board();
+            break;
+            /*Disable PHY Interface driver*/
+        case PHY_INTERFACE_DOWN:
+            tr_debug("%s (%d)", __func__, __LINE__);
+            ret_val = rf_device->off();
+            if(ret_val != 0) ret_val = -1;
+            break;
+            /*Enable PHY Interface driver*/
+        case PHY_INTERFACE_UP:
+            ret_val = rf_device->on();
+            if(ret_val != 0) {
+                tr_debug("%s (%d)", __func__, __LINE__);
+                ret_val = -1;
+                break;
+            }
+            tr_debug("%s (%d) - channel: %d", __func__, __LINE__, (int)rf_channel);
+            rf_device->set_channel(rf_channel);
+            break;
+            /*Enable wireless interface ED scan mode*/
+        case PHY_INTERFACE_RX_ENERGY_STATE:
+            tr_debug("%s (%d)", __func__, __LINE__);
+            break;
+            /*Enable Sniffer state*/
+        case PHY_INTERFACE_SNIFFER_STATE:
+            // TODO - if we really need this - WAS: rf_setup_sniffer(rf_channel);
+            tr_debug("%s (%d)", __func__, __LINE__);
+            ret_val = -1;
+            break;
+        default:
+            tr_debug("%s (%d)", __func__, __LINE__);
+            break;
+    }
+    return ret_val;
+}
+
+static int8_t rf_extension(phy_extension_type_e extension_type, uint8_t *data_ptr)
+{
+    switch (extension_type)
+    {
+        /*Control MAC pending bit for Indirect data transmission*/
+        case PHY_EXTENSION_CTRL_PENDING_BIT:
+            tr_debug("%s (%d)", __func__, __LINE__);
+            break;
+
+            /*Return frame pending status*/
+        case PHY_EXTENSION_READ_LAST_ACK_PENDING_STATUS:
+            tr_debug("%s (%d)", __func__, __LINE__);
+            *data_ptr = 0;
+            break;
+
+            /*Set channel, used for setting channel for energy scan*/
+        case PHY_EXTENSION_SET_CHANNEL:
+            tr_debug("%s (%d)", __func__, __LINE__);
+            break;
+
+            /*Read energy on the channel*/
+        case PHY_EXTENSION_READ_CHANNEL_ENERGY:
+            // TODO: *data_ptr = rf_get_channel_energy();
+            tr_debug("%s (%d)", __func__, __LINE__);
+            *data_ptr = (int8_t)rf_device->get_last_rssi_dbm();
+            break;
+
+            /*Read status of the link*/
+        case PHY_EXTENSION_READ_LINK_STATUS:
+            // TODO: *data_ptr = rf_get_link_status();
+            tr_debug("%s (%d)", __func__, __LINE__);
+            *data_ptr = rf_device->get_last_sqi(); // use SQI as link quality
+            break;
+
+        default:
+            tr_debug("%s (%d)", __func__, __LINE__);
+            break;
+    }
+    return 0;
+}
+
+static inline void rf_set_mac_address(uint8_t *ptr) {
+    tr_debug("%s (%d), adr0=%x, adr1=%x, adr2=%x, adr3=%x, adr4=%x, adr5=%x, adr6=%x, adr7=%x",
+             __func__, __LINE__,
+             ptr[0], ptr[1], ptr[2], ptr[3], ptr[4], ptr[5], ptr[6], ptr[7]);
+    for(int i = 0; i < 8; i++) {
+        stored_mac_address[i] = ptr[i];
+    }
+}
+
+static inline void rf_get_mac_address(uint8_t *ptr) {
+    for(int i = 0; i < 8; i++) {
+        ptr[i] = stored_mac_address[i];
+    }
+    tr_debug("%s (%d), adr0=%x, adr1=%x, adr2=%x, adr3=%x, adr4=%x, adr5=%x, adr6=%x, adr7=%x",
+             __func__, __LINE__,
+             ptr[0], ptr[1], ptr[2], ptr[3], ptr[4], ptr[5], ptr[6], ptr[7]);
+}
+
+static inline void rf_set_short_adr(uint8_t *ptr) {
+    stored_short_adr = (ptr[0] << 8) + ptr[1]; // big-endian
+    tr_debug("%s (%d), adr0=%x, adr1=%x, val=%d",
+             __func__, __LINE__,
+             ptr[0], ptr[1], stored_short_adr);
+}
+
+static inline void rf_set_pan_id(uint8_t *ptr) {
+    stored_pan_id = (ptr[0] << 8) + ptr[1]; // big-endian
+    tr_debug("%s (%d), adr0=%x, adr1=%x, val=%d",
+            __func__, __LINE__,
+            ptr[0], ptr[1], stored_pan_id);
+}
+
+static int8_t rf_address_write(phy_address_type_e address_type, uint8_t *address_ptr)
+{
+    switch (address_type)
+    {
+        /*Set 48-bit address*/
+        case PHY_MAC_48BIT:
+            /* Not used in this example */
+            // betzw - WAS: rf_set_mac_48bit(address_ptr);
+            break;
+            /*Set 64-bit address*/
+        case PHY_MAC_64BIT:
+            rf_set_mac_address(address_ptr);
+            break;
+            /*Set 16-bit address*/
+        case PHY_MAC_16BIT:
+            rf_set_short_adr(address_ptr);
+            break;
+            /*Set PAN Id*/
+        case PHY_MAC_PANID:
+            rf_set_pan_id(address_ptr);
+            break;
+    }
+
+    return 0;
+}
+
+static void rf_ack_loop(void) {
+    static uint16_t buffer[2] = {
+            (FC_ACK_FRAME << MAC_FCF_FRAME_TYPE_SHIFT),
+            0x0
+    };
+
+    tr_debug("%s (%d)", __func__, __LINE__);
+
+    do {
+        /* Wait for signal */
+        osEvent event = rf_ack_sender->signal_wait(0);
+
+        if(event.status != osEventSignal) {
+#ifdef HEAVY_TRACING
+            tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+            continue;
+        }
+
+        int32_t signals = event.value.signals;
+
+#ifdef HEAVY_TRACING
+        tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+
+        /* Get Lock */
+        rf_if_lock();
+
+        if(signals & RF_SIG_ACK_NEEDED) {
+#ifdef HEAVY_TRACING
+            tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+
+            /* Prepare payload */
+            uint8_t *ptr = (uint8_t*)&buffer[1];
+            ptr[0] = rf_rx_sequence;   // Sequence number
+
+            /* Wait for device not receiving */
+            while(rf_device->is_receiving()) {
+#ifdef HEAVY_TRACING
+                tr_info("%s (%d)", __func__, __LINE__);
+#endif
+                wait_us(10);
+            }
+
+#ifdef HEAVY_TRACING
+            tr_debug("%s (%d), hdr=%x, nr=%x", __func__, __LINE__, buffer[0], ptr[0]);
+#endif
+
+            /* Set information that we have sent an ACK */
+            rf_ack_sent = true;
+
+            /*Send the packet*/
+            rf_device->send((uint8_t*)buffer, 3, false);
+
+#ifdef HEAVY_TRACING
+            tr_debug("%s (%d), hdr=%x, nr=%x", __func__, __LINE__, buffer[0], ptr[0]);
+#endif
+        }
+
+        if(signals & RF_SIG_CB_TX_DONE) {
+            device_driver.phy_tx_done_cb(rf_radio_driver_id, mac_tx_handle, phy_status,
+                                         (phy_status == PHY_LINK_CCA_FAIL) ? 0xFF : 0, 0);
+#ifdef HEAVY_TRACING
+            tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+        }
+
+        if(signals & RF_SIG_CB_RX_RCVD) {
+            device_driver.phy_rx_cb(rf_rx_buf, rf_buffer_len, rf_sqi, rf_rssi, rf_radio_driver_id);
+#ifdef HEAVY_TRACING
+            tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+        }
+
+        /* Release Lock */
+        rf_if_unlock();
+
+#ifdef HEAVY_TRACING
+        tr_debug("%s (%d)", __func__, __LINE__);
+#endif
+    } while(true);
+}
+
+void NanostackRfPhySpirit1::rf_init(void) {
+    osStatus ret;
+
+    if(rf_device == NULL) {
+        rf_device = &SimpleSpirit1::CreateInstance(_spi_mosi, _spi_miso, _spi_sclk, _dev_irq, _dev_cs, _dev_sdn, _brd_led);
+        rf_device->attach_irq_callback(rf_callback_func);
+
+        ret = rf_ack_sender->start(rf_ack_loop);
+        if (ret == osOK) {
+            rf_ack_sender->set_priority(osPriorityRealtime);
+        }
+
+#ifndef NDEBUG
+        debug_if(!(ret == osOK), "\r\nassert failed in: %s (%d)\r\n", __func__, __LINE__);
+#endif
+    }
+}
+
+NanostackRfPhySpirit1::NanostackRfPhySpirit1(PinName spi_mosi, PinName spi_miso, PinName spi_sclk,
+                                             PinName dev_irq,  PinName dev_cs, PinName dev_sdn, PinName brd_led) :
+    _spi_mosi(spi_mosi),
+    _spi_miso(spi_miso),
+    _spi_sclk(spi_sclk),
+    _dev_irq(dev_irq),
+    _dev_cs(dev_cs),
+    _dev_sdn(dev_sdn),
+    _brd_led(brd_led)
+{
+    /* Nothing to do */
+    tr_debug("%s (%d)", __func__, __LINE__);
+}
+
+NanostackRfPhySpirit1::~NanostackRfPhySpirit1()
+{
+    /* Nothing to do */
+    tr_debug("%s (%d)", __func__, __LINE__);
+}
+
+int8_t NanostackRfPhySpirit1::rf_register()
+{
+    tr_debug("%s (%d)", __func__, __LINE__);
+
+    /* Get Lock */
+    rf_if_lock();
+
+    /* Do some initialization */
+    rf_init();
+
+    /* Set pointer to MAC address */
+    device_driver.PHY_MAC = stored_mac_address;
+
+    /* Set driver Name */
+    device_driver.driver_description = (char*)"Spirit1 Sub-GHz RF";
+
+    /*Type of RF PHY is SubGHz*/
+    device_driver.link_type = PHY_LINK_15_4_SUBGHZ_TYPE;
+
+    /*Maximum size of payload*/
+    device_driver.phy_MTU = MAX_PACKET_LEN;
+
+    /*No header in PHY*/
+    device_driver.phy_header_length = 0;
+
+    /*No tail in PHY*/
+    device_driver.phy_tail_length = 0;
+
+    /*Set up driver functions*/
+    device_driver.address_write = &rf_address_write;
+    device_driver.extension = &rf_extension;
+    device_driver.state_control = &rf_interface_state_control;
+    device_driver.tx = &rf_trigger_send;
+
+    /*Set supported channel pages*/
+    device_driver.phy_channel_pages = phy_channel_pages;
+
+    //Nullify rx/tx callbacks
+    device_driver.phy_rx_cb = NULL;
+    device_driver.phy_tx_done_cb = NULL;
+    device_driver.arm_net_virtual_rx_cb = NULL;
+    device_driver.arm_net_virtual_tx_cb = NULL;
+
+    /*Register device driver*/
+    rf_radio_driver_id = arm_net_phy_register(&device_driver);
+
+    /* Release Lock */
+    rf_if_unlock();
+
+    tr_debug("%s (%d)", __func__, __LINE__);
+    return rf_radio_driver_id;
+}
+
+void NanostackRfPhySpirit1::rf_unregister()
+{
+    tr_debug("%s (%d)", __func__, __LINE__);
+
+    /* Get Lock */
+    rf_if_lock();
+
+    if (rf_radio_driver_id >= 0) {
+        arm_net_phy_unregister(rf_radio_driver_id);
+        rf_radio_driver_id = -1;
+    }
+
+    /* Release Lock */
+    rf_if_unlock();
+}
+
+void NanostackRfPhySpirit1::get_mac_address(uint8_t *mac)
+{
+    tr_debug("%s (%d)", __func__, __LINE__);
+
+    /* Get Lock */
+    rf_if_lock();
+
+    if(rf_radio_driver_id >= 0) {
+        rf_get_mac_address(mac);
+    } else {
+        error("NanostackRfPhySpirit1 must be registered to read mac address");
+    }
+
+    /* Release Lock */
+    rf_if_unlock();
+}
+
+void NanostackRfPhySpirit1::set_mac_address(uint8_t *mac)
+{
+    tr_debug("%s (%d)", __func__, __LINE__);
+
+    /* Get Lock */
+    rf_if_lock();
+
+    if(rf_radio_driver_id < 0) {
+        rf_set_mac_address(mac);
+    } else {
+        error("NanostackRfPhySpirit1 cannot change mac address when running");
+    }
+
+    /* Release Lock */
+    rf_if_unlock();
+}
+
+#endif /* MBED_CONF_RTOS_PRESENT */
+#endif /* MBED_CONF_NANOSTACK_CONFIGURATION */