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/**
*********************************************************************************************************
* Copyright(c) 2019, Realtek Semiconductor Corporation. All rights reserved.
**********************************************************************************************************
* @file dvb_40bit_prot.c
* @brief This file provides driver of dvb protocol encoding.
* @details
* @author elliot_chen
* @date 2019-083-19
* @version v1.0
*********************************************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "dvb_40bit_prot.h"
#define DVB_40BIT_SEPAR_FIRST_PERIOD (IR_PULSE_HIGH | (3690))
#define DVB_40BIT_SEPAR_SECOND_PERIOD (IR_PULSE_LOW | (1770))
/*!
* @ brief: DVB_40BIT_Encode protocol structure.
* @ note: Store parameters of DVB protocol.
* @ Carrier frequency = 38kHz
* @ duty factor = 1/3
* @ first pulse : 3.5ms 1.75ms
* @ Custom (32 bits) is sent first
* @ Data (32 bits) follows
* @ LSB is sent first !
*/
const IR_ProtocolTypeDef DVB_40BIT_PROTOCOL =
{
38, /* Carrier freqency */
IR_CODING_LSB_FIRST, /* LSB first */
TIME_UNIT, /* unit is us */
2, /* headerLen */
{
IR_PULSE_HIGH | (3720), IR_PULSE_LOW | (1775), /* headerBuf */
0, 0,
0, 0
},
{IR_PULSE_HIGH | 605, IR_PULSE_LOW | 524}, /* log0Buf */
{IR_PULSE_HIGH | 605, IR_PULSE_LOW | 1096}, /* log1Buf */
IR_PULSE_HIGH | 605 /* stopBuf */
};
/*!
* @ User can modify this data structure to send user-defined repeat code!!!
* @ brief: IR repeat code protocol structure.
* @ note: Store parameters of repeat code protocol.
*/
const IR_RepeatCodeTypeDef DVB_40BIT_REPEAT_CODE_PROTOCOL =
{
TIME_UNIT, /* unit is us */
3, /* length of repeat code */
{IR_PULSE_HIGH | 3710, IR_PULSE_LOW | 3580, IR_PULSE_HIGH | 630} /* Buffer of repeat code */
};
/**
* @brief Encode data of DVB protocol.
* @param IR_DataStruct: pointer to struct which store DVB code.
* @retval None
*/
IR_Return_Type DVB_40BIT_Encode(IR_DataTypeDef *IR_DataStruct)
{
IR_Return_Type ret = IR_SUCCEED;
uint32_t key_code_idx = (IR_DataStruct->custom_bit_len << 1) + DVB_40BIT_PROTOCOL.headerLen;
ret = IR_Encode(IR_DataStruct, (IR_ProtocolTypeDef *)(&DVB_40BIT_PROTOCOL), true);
memmove(&IR_DataStruct->irBuf[key_code_idx + 2], \
&IR_DataStruct->irBuf[key_code_idx], \
(IR_DataStruct->bufLen - key_code_idx) * 4);
IR_DataStruct->irBuf[key_code_idx] = ConvertToCarrierCycle(DVB_40BIT_SEPAR_FIRST_PERIOD, \
DVB_40BIT_PROTOCOL.carrierFreq, DVB_40BIT_PROTOCOL.unit);
IR_DataStruct->irBuf[key_code_idx + 1] = ConvertToCarrierCycle(DVB_40BIT_SEPAR_SECOND_PERIOD, \
DVB_40BIT_PROTOCOL.carrierFreq, DVB_40BIT_PROTOCOL.unit);
IR_DataStruct->bufLen += 2;
return ret;
}
/**
* @brief Encode data of repeat code protocol.
* @param frequency: carrier frequency whose uinit is KHz.
* @param IR_DataStruct: pointer to struct which store repeat code data.
* @retval None
*/
IR_Return_Type DVB_40BIT_RepeatCodeEncode(IR_DataTypeDef *IR_DataStruct)
{
return IR_RepeatCodeEncode(IR_DataStruct,
(IR_RepeatCodeTypeDef *)(&DVB_40BIT_REPEAT_CODE_PROTOCOL));
}
/******************* (C) COPYRIGHT 2019 Realtek Semiconductor Corporation *****END OF FILE****/
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