esp32_rmt.h

#include <stdint.h>
#include "driver/rmt.h"


#ifndef ESP32_RMT_H
#define ESP32_RMT_H


#define RMT_TX_CHANNEL    1     /*!< RMT channel for transmitter */
#define RMT_RX_CHANNEL    0     /*!< RMT channel for receiver */
#define RMT_RX_GPIO_NUM  19     /*!< GPIO number for receiver */
#define RMT_INTR_NUM     19     /*!< RMT interrupt number, select from soc.h */
#define RMT_CLK_DIV      100    /*!< RMT counter clock divider */
#define RMT_TICK_10_US    (80000000/RMT_CLK_DIV/100000)   /*!< RMT counter  */

#define RMT_TX_DATA_NUM  1    /*!< NEC tx test data number */
#define rmt_item32_tIMEOUT_US  9500   /*!< RMT receiver timeout value(us) */



class ESP32_RMT
{
	public:
		ESP32_RMT(); //reserved for future use
		void begin(uint8_t, bool);	

		//transmit functions	
		void sendRaw (const uint8_t[], uint8_t,  uint8_t);
		void send(uint8_t);
	
		void necSend(uint16_t, uint16_t); 	
		
	private: 
		void rmt_tx_init();
		void nec_fill_item_level(rmt_item32_t* ,int ,int);
		void nec_fill_item_header(rmt_item32_t* );
		void nec_fill_item_bit_one(rmt_item32_t* );
		void nec_fill_item_bit_zero(rmt_item32_t*);
		void nec_fill_item_end(rmt_item32_t* );
		int nec_build_items(int , rmt_item32_t* , int , uint16_t , uint16_t);	
		
		uint8_t txChannel = 1;
		uint8_t rxChannel = 0;
		
		uint8_t txPin =  16; //default transmit pin
		uint8_t rxPin = 19; //default receive pin
		
	
};



 #endif // ESP32_RMT