Zephyr Project API  3.1.0
A Scalable Open Source RTOS
ina237.h
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1/*
2 * Copyright (c) 2021 Grinn
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_INA237_H_
7#define ZEPHYR_INCLUDE_DT_BINDINGS_INA237_H_
8
9#include <zephyr/dt-bindings/dt-util.h>
10
11/* Operating Mode */
12#define INA237_OPER_MODE_SHUTDOWN 0x00
13#define INA237_OPER_MODE_TRIG_BUS_VOLTAGE_SINGLE_SHOT 0x01
14#define INA237_OPER_MODE_TRIG_SHUNT_VOLTAGE_TRIG_SINGLE_SHOT 0x02
15#define INA237_OPER_MODE_TRIG_SHUNT_BUS_VOLTAGE_SINGLE_SHOT 0x03
16#define INA237_OPER_MODE_TRIG_TEMP_SINGLE_SHOT 0x05
17#define INA237_OPER_MODE_TRIG_TEMP_BUS_SINGLE_SHOT 0x06
18#define INA237_OPER_MODE_TRIG_TEMP_SHUNT_SINGLE_SHOT 0x07
19#define INA237_OPER_MODE_CONT_BUS_VOLTAGE 0x09
20#define INA237_OPER_MODE_CONT_SHUNT_VOLTAGE 0x0A
21#define INA237_OPER_MODE_CONT_SHUNT_BUS_VOLTAGE 0x0B
22#define INA237_OPER_MODE_CONT_TEMP 0x0C
23#define INA237_OPER_MODE_CONT_BUS_VOLTAGE_TEMP 0x0D
24#define INA237_OPER_MODE_CONT_TEMP_SHUNT_VOLTAGE 0x0E
25#define INA237_OPER_MODE_CONT_BUS_SHUNT_VOLTAGE_TEMP 0x0F
26
27/* Conversion time for bus, shunt and temp in micro-seconds */
28#define INA237_CONV_TIME_50 0x00
29#define INA237_CONV_TIME_84 0x01
30#define INA237_CONV_TIME_150 0x02
31#define INA237_CONV_TIME_280 0x03
32#define INA237_CONV_TIME_540 0x04
33#define INA237_CONV_TIME_1052 0x05
34#define INA237_CONV_TIME_2074 0x06
35#define INA237_CONV_TIME_4120 0x07
36
37/* Averaging Mode */
38#define INA237_AVG_MODE_1 0x00
39#define INA237_AVG_MODE_4 0x01
40#define INA237_AVG_MODE_16 0x02
41#define INA237_AVG_MODE_64 0x03
42#define INA237_AVG_MODE_128 0x04
43#define INA237_AVG_MODE_256 0x05
44#define INA237_AVG_MODE_512 0x06
45#define INA237_AVG_MODE_1024 0x07
46
47/* Reset Mode */
48#define INA237_RST_NORMAL_OPERATION 0x00
49#define INA237_RST_SYSTEM_RESET 0x01
50
51/* Delay for initial ADC conversion in steps of 2 ms */
52#define INA237_INIT_ADC_DELAY_0_S 0x00
53#define INA237_INIT_ADC_DELAY_2_MS 0x01
54#define INA237_INIT_ADC_DELAY_510_MS 0xFF
55
56/* Shunt full scale range selection across IN+ and IN–. */
57#define INA237_ADC_RANGE_163_84 0x00
58#define INA237_ADC_RANGE_40_96 0x01
59
68#define INA237_CONFIG(rst_mode, \
69 convdly, \
70 adc_range) \
71 (((rst_mode) << 15) | ((convdly) << 6) | ((adc_range) << 4))
72
82#define INA237_ADC_CONFIG(mode, \
83 vshct, \
84 vbusct, \
85 vtct, \
86 avg) \
87 (((mode) << 12) | ((vbusct) << 9) | ((vshct) << 6) | ((vtct) << 3) | (avg))
88
89#endif /* ZEPHYR_INCLUDE_DT_BINDINGS_INA237_H_ */