示例#1
0
static gzp_tx_rx_trans_result_t gzp_tx_rx_transaction(const uint8_t *tx_packet, uint8_t tx_length, uint8_t *rx_dst, uint8_t *rx_length, uint8_t pipe)
{
  gzp_tx_rx_trans_result_t retval;
  uint8_t fetch_packet[GZPAR_CMD_FETCH_RESP_PAYLOAD_LENGTH];

  gzll_rx_fifo_flush();

  retval = GZP_TX_RX_FAILED_TO_SEND;

  if(gzp_tx_packet(tx_packet, tx_length, pipe))
  {
    retval = GZP_TX_RX_NO_RESPONSE;

    gzll_rx_fifo_flush();
    fetch_packet[0] = GZP_CMD_FETCH_RESP;

    gzp_delay_rx_periods(GZP_TX_RX_TRANS_DELAY);
    gzp_tx_packet(fetch_packet, GZPAR_CMD_FETCH_RESP_PAYLOAD_LENGTH, pipe);

    if(gzll_rx_fifo_read(rx_dst, rx_length, NULL))
    {
      retval = GZP_TX_RX_SUCCESS;
    }
  }
  return retval;
}
示例#2
0
bool gzp_address_req_send()
{
    //lint -save -e514 Unusual use of a Boolean expression (gzll_update_ok &= ...)
    uint8_t i;
    bool retval = false;
    bool success;
    uint8_t address_req[GZP_CMD_HOST_ADDRESS_REQ_PAYLOAD_LENGTH];
    uint8_t rx_payload[NRF_GZLL_CONST_MAX_PAYLOAD_LENGTH];
    uint32_t rx_payload_length =  NRF_GZLL_CONST_MAX_PAYLOAD_LENGTH;
    nrf_gzll_tx_power_t temp_power;
    uint32_t temp_max_tx_attempts;
    bool gzll_update_ok = true;


    // Store parameters that are temporarily changed
    temp_max_tx_attempts = nrf_gzll_get_max_tx_attempts();
    temp_power = nrf_gzll_get_tx_power();

    // Modify parameters
    nrf_gzp_disable_gzll();
    gzll_update_ok &= nrf_gzll_set_max_tx_attempts(GZP_REQ_TX_TIMEOUT);
    gzll_update_ok &= nrf_gzll_set_tx_power(GZP_POWER);

    // Flush RX FIFO
    gzll_update_ok &= nrf_gzll_flush_rx_fifo(GZP_PAIRING_PIPE);
    gzll_update_ok &= nrf_gzll_enable();
    // Build "request" packet
    address_req[0] = (uint8_t)GZP_CMD_HOST_ADDRESS_REQ;

    // Send a number of packets in order to broadcast that devices not within
    // close proximity must back off.
    for(i = 0; i < GZP_MAX_BACKOFF_PACKETS; i++)
    {
        success = gzp_tx_packet(address_req, GZP_CMD_HOST_ADDRESS_REQ_PAYLOAD_LENGTH, GZP_PAIRING_PIPE); 
        if(success)
        {
            nrf_gzp_flush_rx_fifo(GZP_PAIRING_PIPE);
        }
        else
        {
            break;
        }
    }

    gzp_delay_rx_periods(GZP_TX_ACK_WAIT_TIMEOUT);
    // Send message for fetching pairing response from host.
    address_req[0] = (uint8_t)GZP_CMD_HOST_ADDRESS_FETCH;

    success =  gzp_tx_packet(address_req, GZP_CMD_HOST_ADDRESS_REQ_PAYLOAD_LENGTH, GZP_PAIRING_PIPE);
    if(success  && latest_tx_info.payload_received_in_ack)
    {
        // If pairing response received
        if(nrf_gzll_get_rx_fifo_packet_count(GZP_PAIRING_PIPE) > 0)
        {
            rx_payload_length = NRF_GZLL_CONST_MAX_PAYLOAD_LENGTH;  //dummy placeholder
            if(nrf_gzll_fetch_packet_from_rx_fifo(GZP_PAIRING_PIPE, rx_payload, &rx_payload_length))
            {
                if(rx_payload[0] == (uint8_t)GZP_CMD_HOST_ADDRESS_RESP)
                {
                    memcpy(gzp_system_address, &rx_payload[GZP_CMD_HOST_ADDRESS_RESP_ADDRESS], GZP_SYSTEM_ADDRESS_WIDTH);
                    gzll_update_ok &= gzp_update_radio_params(&rx_payload[GZP_CMD_HOST_ADDRESS_RESP_ADDRESS]);
                    #ifndef GZP_NV_STORAGE_DISABLE
                    (void)gzp_params_store(false); // "False" indicates that only "system address" part of DB element will be stored
                    #endif
                    retval = true;
                }
            }
        }
    }
    else
    {
        gzp_delay_rx_periods(GZP_NOT_PROXIMITY_BACKOFF_RX_TIMEOUT - GZP_TX_ACK_WAIT_TIMEOUT);
    }
    gzp_delay_rx_periods(GZP_STEP1_RX_TIMEOUT);

    // Clean-up and restore parameters temporarily  modified
    nrf_gzp_disable_gzll();
    gzll_update_ok &= nrf_gzll_flush_rx_fifo(GZP_PAIRING_PIPE);
    gzll_update_ok &= nrf_gzll_flush_tx_fifo(GZP_PAIRING_PIPE);
    gzll_update_ok &= nrf_gzll_set_max_tx_attempts(temp_max_tx_attempts);
    gzll_update_ok &= nrf_gzll_set_tx_power(temp_power);
    gzll_update_ok &= nrf_gzll_enable();

    if(!gzll_update_ok)
    {
    /*
    The update of the Gazell parameters failed. Use nrf_gzll_get_error_code() 
    to investigate the cause.
    */
    }

    return retval;
    //lint -restore
}
示例#3
0
bool gzp_address_req_send(uint8_t idx)
{
  uint8_t i;
  bool retval = false;
  uint8_t address_req[GZP_CMD_HOST_ADDRESS_REQ_PAYLOAD_LENGTH];
  uint8_t rx_payload[GZLL_MAX_PAYLOAD_LENGTH];
  uint16_t temp_power, temp_tx_timeout, temp_device_mode;

  if(gzll_get_state() == GZLL_IDLE)
  {
    // Store parameters that are temporarily changed
    temp_tx_timeout = gzll_get_param(GZLL_PARAM_TX_TIMEOUT);
    temp_power = gzll_get_param(GZLL_PARAM_OUTPUT_POWER);
    temp_device_mode = gzll_get_param(GZLL_PARAM_DEVICE_MODE);
    
    // Modify parameters
    gzll_set_param(GZLL_PARAM_TX_TIMEOUT, GZP_REQ_TX_TIMEOUT);
    gzll_set_param(GZLL_PARAM_OUTPUT_POWER, GZP_POWER);
    gzll_set_param(GZLL_PARAM_DEVICE_MODE, 0);

    // Flush RX FIFO
    gzll_rx_fifo_flush();

    // Build "request" packet
    address_req[0] = GZP_CMD_HOST_ADDRESS_REQ;

    // Send a number of packets in order to broadcast that devices not within
    // close proximity must back off.
    for(i = 0; i < GZP_MAX_BACKOFF_PACKETS; i++)
    {
      if(!gzp_tx_packet(address_req, GZP_CMD_HOST_ADDRESS_REQ_PAYLOAD_LENGTH, 0))
      {
        break;
      }
    }

    gzp_delay_rx_periods(GZP_TX_ACK_WAIT_TIMEOUT);

    // Send message for fetching pairing response from host.
    address_req[0] = GZP_CMD_HOST_ADDRESS_FETCH;

    if(gzp_tx_packet(&address_req[0], GZP_CMD_HOST_ADDRESS_REQ_PAYLOAD_LENGTH, 0))
    {
      // If pairing response received
      if(gzll_rx_fifo_read(rx_payload, NULL, NULL))
      {
        if(rx_payload[0] == GZP_CMD_HOST_ADDRESS_RESP)
        {
          memcpy(gzp_system_address, &rx_payload[GZP_CMD_HOST_ADDRESS_RESP_ADDRESS], GZP_SYSTEM_ADDRESS_WIDTH);
          gzp_update_radio_params(&rx_payload[GZP_CMD_HOST_ADDRESS_RESP_ADDRESS]);

          pairing_list_addr_write(idx, gzp_system_address);
          retval = true;
        }
      }
    }
    else
    {
      gzp_delay_rx_periods(GZP_NOT_PROXIMITY_BACKOFF_RX_TIMEOUT - GZP_TX_ACK_WAIT_TIMEOUT);
    }

    gzp_delay_rx_periods(GZP_STEP1_RX_TIMEOUT);

    // Clean-up and restore parameters temporarily  modified
    gzll_rx_fifo_flush();
    gzll_tx_fifo_flush();
    gzll_set_param(GZLL_PARAM_TX_TIMEOUT, temp_tx_timeout);
    gzll_set_param(GZLL_PARAM_OUTPUT_POWER, temp_power);
    gzll_set_param(GZLL_PARAM_DEVICE_MODE, temp_device_mode);
  }

  return retval;
}