#ifndef __ADS1220_H
#define __ADS1220_H
// #include "main.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_system.h"
#include "driver/spi_master.h"
#include "driver/gpio.h"

typedef uint8_t u8;
typedef uint32_t u32;
typedef int32_t s32;
#define LED1_GPIO_PIN   9
#define LED2_GPIO_PIN   10

#define GPIO_INPUT_IO_39     7

typedef struct
{

	int ch0_4ma;
	int ch0_12ma;
	float ch0_4ma_yl;
	float ch0_12ma_yl;
	
	int ch1_4ma;
	int ch1_12ma;
	float ch1_4ma_yl;
	float ch1_12ma_yl;
	
	int ch2_4ma;
	int ch2_12ma;
	float ch2_4ma_yl;
	float ch2_12ma_yl;
}ads_cali_t;

//extern ads_cali_t ads_cali;


uint32_t get_now_20us(void);
int32_t tim_diff(uint32_t a,uint32_t b);
int ADS1220_get_rate(void);
void ADS1220_set_rate(int i);
void ADS1220_Init(void);                // ADS1220��ʼ�� 
void ADS1220_Config(void);              // ADS1220����  
void ADS1220_StartConv(u8 channal);     // ADS1220����ת�� 
void ADS1220_Reset(void);               // ADS1220��λ 
void ADS1220_PowerDown(void);           // ADS1220�������ģʽ 
void ADS1220_PGASet(u8 gain);           // ADS1220 PGA����  
void ADS1220_WriteCommand(u8 cmd);      // ADS1220��� 
s32 ADS1220_ReadData(void);             // ADS1220������ 
void ADS1220_WriteReg(u8 reg,u8 dat);   // ADS1220д�Ĵ��� 
u8 ADS1220_ReadReg(u8 reg);             // ADS1220���Ĵ��� 
u8 ADS1220_ReadWriteByte(u8 dat);       // ��SPI������д��һ�ֽ� 
u32 ADS1220_ReadWrite24Bits(u32 dat);   // ��ADS1220�������24Bits 

int scale(int raw, int raw_min, int raw_max,int eng_min, int eng_max);
#endif