#ifndef __ADS1220_H
#define __ADS1220_H

#include <stdint.h>
#include "freertos/queue.h"

#define ADS1220_DRDY_IO		7
#define SPI2_PIN_NUM_MISO 	6
#define SPI2_PIN_NUM_MOSI 	5
#define SPI2_PIN_NUM_CLK 	16
#define SPI2_PIN_NUM_CS 	15
#define ADS1220_HOST 		SPI2_HOST
#define PARALLEL_LINES 		16


#define ADS1220_nCS_HIGH() 	gpio_set_level(GPIO_NUM_38, 1)
#define ADS1220_nCS_LOW() 	gpio_set_level(GPIO_NUM_38, 0)

#define ADS1220_CMD_WREG 		0x40	  
#define ADS1220_CMD_RREG 		0x20	  
#define ADS1220_CMD_RESET 		0x06	  
#define ADS1220_CMD_START 		0x08	  
#define ADS1220_CMD_POWERDOWN 	0x02 
#define ADS1220_CMD_RDATA 		0x10	   

#define Channal1 				0x00 
#define Channal2 				0x10 
#define Channal3	 			0x20 
#define Channal4 				0x30 

#define ADS1220_REG0 			0x00 
#define ADS1220_REG1 			0x01 
#define ADS1220_REG2 			0x02 
#define ADS1220_REG3 			0x03 

#define PGAGain1 				0x00	
#define PGAGain2 				0x02	
#define PGAGain4 				0x04	
#define PGAGain8 				0x06	
#define PGAGain16 				0x08	
#define PGAGain32 				0x0A	
#define PGAGain64 				0x0C
#define PGAGain128 				0x0E 

#define ADS1220_Standby 		0	
#define ADS1220_ConvStart 		1	 
#define ADS1220_ConvFinish 		2 

#define ADS1220_Channal1 		0 
#define ADS1220_Channal2 		1 
#define ADS1220_Channal3 		2 
#define ADS1220_Channal4 		3 

int    	ADS1220_get_rate(void);
void   	ADS1220_set_rate(int i);            
void   	ADS1220_Config(void);             
void 	ADS1220_StartConv(uint8_t channal);    
void 	ADS1220_Reset(void);              
void 	ADS1220_PowerDown(void);         
void 	ADS1220_PGASet(uint8_t gain);          
void    ADS1220_WriteCommand(uint8_t cmd);      
int32_t ADS1220_ReadData(void);            
void 	ADS1220_WriteReg(uint8_t reg,uint8_t dat);  
uint8_t ADS1220_ReadReg(uint8_t reg);             
uint8_t ADS1220_ReadWriteByte(uint8_t dat);       

void    ads1220_init(void);
int 	ads1220_read_flow(int32_t *ad_raw_p, int *ad_ch_p, uint32_t *ad_update_time_p);

#endif