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/*
* Copyright 2023 Birte Kristina Friesel
*
* SPDX-License-Identifier: BSD-2-Clause
*
* Driver for ADS111x 16-Bit ADCs
*/
#ifndef ADS111x_H
#define ADS111x_H
#include <stdint.h>
class ADS111x {
private:
ADS111x(const ADS111x ©);
unsigned char const address;
unsigned char fsr_scale;
unsigned char txbuf[3];
unsigned char rxbuf[2];
unsigned char const P_CONVERSION = 0;
unsigned char const P_CONFIG = 1;
unsigned char const P_LO_THRESH = 2;
unsigned char const P_HI_THRESH = 3;
public:
ADS111x(unsigned char const addr) : address(addr), fsr_scale(8) {}
static unsigned short const START_CONVERSION = 1 << 15;
enum conf_mux : unsigned short {
DIFFERENTIAL_01 = 0 << 12,
DIFFERENTIAL_03 = 1 << 12,
DIFFERENTIAL_13 = 2 << 12,
DIFFERENTIAL_23 = 3 << 12,
SINGLE_0 = 4 << 12,
SINGLE_1 = 5 << 12,
SINGLE_2 = 6 << 12,
SINGLE_3 = 7 << 12
};
static unsigned short const CONF_PGA_MASK = 0b0000111000000000;
static unsigned short const CONF_PGA_OFFSET = 9;
enum conf_pga : unsigned short {
FSR_6V = 0 << 9,
FSR_4V = 1 << 9,
FSR_2V = 2 << 9,
FSR_1V = 3 << 9,
FSR_0V5 = 4 << 9,
FSR_0V25 = 5 << 9
};
enum conf_mode : unsigned short {
CONTINUOUS = 0 << 8,
SINGLE_SHOT = 1 << 8,
};
enum conf_data_rate : unsigned short {
SPS_8 = 0 << 5,
SPS_16 = 1 << 5,
SPS_32 = 2 << 5,
SPS_64 = 3 << 5,
SPS_128 = 4 << 5,
SPS_250 = 5 << 5,
SPS_475 = 6 << 5,
SPS_860 = 7 << 5
};
enum conf_comp_mode : unsigned short {
TRADITIONAL = 0 << 4,
WINDOW = 1 << 4
};
enum conf_comp_pol : unsigned short {
ACTIVE_LOW = 0 << 3,
ACTIVE_HIGH = 1 << 3,
};
enum conf_comp_lat : unsigned short {
NONLATCHING = 0 << 2,
LATCHING = 1 << 2
};
enum conf_comp_queue : unsigned short {
ONE_CONVERSON = 0,
TWO_CONVERSIONS,
FOUR_CONVERSIONS,
DISABLED
};
void configure(unsigned short config);
int16_t readRaw();
float readVoltage();
};
extern ADS111x ads111x;
#endif
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