/**
 * Copyright (c) 2016 - 2021, Nordic Semiconductor ASA
 *
 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
 *    conditions and the following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 */
#include "ble_dtm_hw.h"
#include "ble_dtm.h"
#include <stdbool.h>
#include <string.h>
#include "nrf.h"


void dtm_turn_off_test()
{
    NRF_RADIO->TEST = 0;
}


void dtm_constant_carrier()
{
    NRF_RADIO->TEST = (RADIO_TEST_PLL_LOCK_Enabled << RADIO_TEST_PLL_LOCK_Pos) |
                      (RADIO_TEST_CONST_CARRIER_Enabled << RADIO_TEST_CONST_CARRIER_Pos);
}


uint32_t dtm_radio_validate(int32_t           m_tx_power, uint8_t           m_radio_mode)
{
    // Handle BLE Radio tuning parameters from production for DTM if required.
    // Only needed for DTM without SoftDevice, as the SoftDevice normally handles this.
    // PCN-083.
    if ( ((NRF_FICR->OVERRIDEEN) & FICR_OVERRIDEEN_BLE_1MBIT_Msk) == FICR_OVERRIDEEN_BLE_1MBIT_Override)
    {
        NRF_RADIO->OVERRIDE0 = NRF_FICR->BLE_1MBIT[0];
        NRF_RADIO->OVERRIDE1 = NRF_FICR->BLE_1MBIT[1];
        NRF_RADIO->OVERRIDE2 = NRF_FICR->BLE_1MBIT[2];
        NRF_RADIO->OVERRIDE3 = NRF_FICR->BLE_1MBIT[3];
        NRF_RADIO->OVERRIDE4 = NRF_FICR->BLE_1MBIT[4];
    }

    // Initializing code below is quite generic - for BLE, the values are fixed, and expressions
    // are constant. Non-constant values are essentially set in radio_prepare().
    if (!(m_tx_power == RADIO_TXPOWER_TXPOWER_0dBm     ||
          m_tx_power == RADIO_TXPOWER_TXPOWER_Pos4dBm  ||
          m_tx_power == RADIO_TXPOWER_TXPOWER_Neg30dBm ||
          m_tx_power == RADIO_TXPOWER_TXPOWER_Neg20dBm ||
          m_tx_power == RADIO_TXPOWER_TXPOWER_Neg16dBm ||
          m_tx_power == RADIO_TXPOWER_TXPOWER_Neg12dBm ||
          m_tx_power == RADIO_TXPOWER_TXPOWER_Neg8dBm  ||
          m_tx_power == RADIO_TXPOWER_TXPOWER_Neg4dBm
        ) ||
        (m_radio_mode > RADIO_MODE_MODE_Ble_1Mbit) // Values 0 - 2: Proprietary mode, 3 (last valid): BLE
       )
    {
        return DTM_ERROR_ILLEGAL_CONFIGURATION;
    }

    return DTM_SUCCESS;
}
