/******************************************************************************
 * Copyright (c) 2022 Telink Semiconductor (Shanghai) Co., Ltd. ("TELINK")
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *****************************************************************************/
#ifndef EMI_H_
#define EMI_H_

#include "rf.h"

/**********************************************************************************************************************
 *                                           global macro                                                             *
 *********************************************************************************************************************/
#define EMI_ACCESS_ADDR 0x140808
#define EMI_ACCESS_CODE 0x29417671

/**********************************************************************************************************************
 *                                         function declaration                                                    *
 *********************************************************************************************************************/

/**
 * @brief      This function serves to set singletone power and channel
 * @param[in]  power_level - the power level.
 * @param[in]  rf_chn      - the channel.
 * @return     none
 */
void rf_emi_tx_single_tone(rf_power_level_e power_level, signed char rf_chn);

/**
 * @brief      This function serves to set rx mode and channel
 * @param[in]  mode   - mode of RF.
 * @param[in]  rf_chn - the rx channel.
 * @return     none
 */
void rf_emi_rx_setup(rf_mode_e mode, signed char rf_chn);

/**
 * @brief    This function serves to update the number of receiving packet and the RSSI
 * @return   none
 */
void rf_emi_rx_loop(void);

/**
 * @brief    This function serves to stop emi/(close RF)
 * @return   none
 */
void rf_emi_stop(void);

/**
 * @brief    This function serves to get the number of packets received.
 * @return   the number of packets received.
 */
unsigned int rf_emi_get_rxpkt_cnt(void);

/**
 * @brief    This function serves to get the RSSI of packets received
 * @return   the RSSI of packets received
 */
char rf_emi_get_rssi_avg(void);

/**
 * @brief      This function serves to set the CD mode correlation register
 * @return     none
 */
void rf_emi_tx_continue_setup(void);

/**
 * @brief      This function serves to update the CD mode data.
 * @param[in]  rf_mode     - mode of RF.
 * @param[in]  power_level - power level of RF.
 * @param[in]  rf_chn      - channel of RF.
 * @param[in]  pkt_type    - The type of data sent.
 * -#0:random
 * -#1:0xf0
 * -#2:0x55
 * @return     none
 */
void rf_emi_tx_continue_update_data(rf_mode_e rf_mode, rf_power_level_e power_level, signed char rf_chn,
                                    unsigned char pkt_type);

/**
 * @brief      This function serves to continue to run the CD mode
 * @return     none
 */
void rf_continue_mode_run(void);

/**
 * @brief      This function serves to send packets in the burst mode
 * @param[in]  rf_mode  - mode of RF.
 * @param[in]  pkt_type - The type of data sent.
 * -#0:random
 * -#1:0xf0
 * -#2:0x55
 * @return     none
 */
void rf_emi_tx_burst_loop(rf_mode_e rf_mode, unsigned char pkt_type);

/**
 * @brief      This function serves to set the burst mode
 * @param[in]  rf_mode     - mode of RF.
 * @param[in]  power_level - power level of RF.
 * @param[in]  rf_chn      - channel of RF.
 * @param[in]  pkt_type    - The type of data sent.
 * -#0:random
 * -#1:0xf0
 * -#2:0x55
 * @return     none
 */
void rf_emi_tx_burst_setup(rf_mode_e rf_mode, rf_power_level_e power_level, signed char rf_chn,
                           unsigned char pkt_type);

/**
 * @brief      This function serves to generate random packets that need to be sent in burst mode
 * @param[in] *p - the address of random packets.
 * @param[in]  n - the number of random packets.
 * @return     none
 */
void rf_phy_test_prbs9(unsigned char *p, int n);

/**
 * @brief      This function serves to reset baseband.
 * @return     none
 */
void rf_emi_reset_baseband(void);

/**
 * @brief      This function serves to generate random number.
 * @param[in]  state - the old random number.
 * @return     the new random number
 */
unsigned int emi_pn_gen(unsigned int state);
#endif