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f424421f79
The INA219 has the exact same interface as the INA220 (including values and semantics of the configuration register). Thus, this driver can be used for both. The ina220 has been renamed to ina2xx to reflect this and pseudo modules for the ina220 and ina219 have been added.
103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/*
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* Copyright (C) 2015 Eistec AB
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup tests
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* @{
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*
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* @file
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* @brief Test application for the INA2XX sensor driver
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*
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* @author Joakim Nohlgård <joakim.nohlgard@eistec.se>
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*
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* @}
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*/
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#ifndef TEST_INA2XX_I2C
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#error "TEST_INA2XX_I2C not defined"
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#endif
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#ifndef TEST_INA2XX_ADDR
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#error "TEST_INA2XX_ADDR not defined"
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#endif
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#include <stdio.h>
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#include "xtimer.h"
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#include "ina2xx.h"
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/* Use the following configuration:
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*
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* - Continuous measurements, both shunt and bus voltage
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* - +/- 320 mV Vshunt range
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* - 32 V maximum bus voltage
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* - 12 bit ADC resolution, no hardware averaging
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*/
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#define CONFIG (INA2XX_MODE_CONTINUOUS_SHUNT_BUS | INA2XX_RANGE_320MV | \
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INA2XX_BRNG_32V_FSR | INA2XX_SADC_12BIT | INA2XX_BADC_12BIT)
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#define CALIBRATION (4096)
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#define SLEEP_USEC (100 * 1000U)
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int main(void)
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{
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ina2xx_t dev;
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int16_t val;
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puts("INA2XX sensor driver test application\n");
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printf("Initializing INA2XX sensor at I2C_%i, address 0x%02x... ",
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TEST_INA2XX_I2C, TEST_INA2XX_ADDR);
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if (ina2xx_init(&dev, TEST_INA2XX_I2C, TEST_INA2XX_ADDR) == 0) {
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puts("[OK]\n");
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} else {
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puts("[Failed]");
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return 1;
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}
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puts("Set configuration register");
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if (ina2xx_set_config(&dev, CONFIG) == 0) {
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puts("[OK]\n");
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} else {
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puts("[Failed]");
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return 1;
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}
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puts("Set calibration register");
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if (ina2xx_set_calibration(&dev, CALIBRATION) == 0) {
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puts("[OK]\n");
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} else {
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puts("[Failed]");
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return 1;
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}
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while (1) {
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/* Read shunt resistor voltage, in millivolts */
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ina2xx_read_shunt(&dev, &val);
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printf("shunt: %6d", val);
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/* Read VBUS voltage, in millivolts */
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ina2xx_read_bus(&dev, &val);
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/* The bus voltage is found in the topmost 13 bits of the bus voltage
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* register */
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val = (val >> INA2XX_BUS_VOLTAGE_SHIFT);
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printf("\tbus: %6d", val);
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/* Read current register, the scale depends on the value of the
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* calibration register */
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ina2xx_read_current(&dev, &val);
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printf("\tcurrent: %6d", val);
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/* Read power register, the scale depends on the value of the
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* calibration register */
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ina2xx_read_power(&dev, &val);
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printf("\tpower: %6d\n", val);
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xtimer_usleep(SLEEP_USEC);
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}
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return 0;
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}
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