main.c
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/*
* Copyright (C) 2016 Inria
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup tests
* @{
*
* @file
* @brief Test application for the BMP180 pressure and temperature sensor
*
* @author Alexandre Abadie <alexandre.abadie@inria.fr>
*
* @}
*/
#ifndef TEST_I2C
#error "TEST_I2C not defined"
#endif
#ifndef TEST_MEASURE_OVERSAMPLING
#error "TEST_MEASURE_OVERSAMPLING not defined"
#endif
#ifndef TEST_ALTITUDE
#error "TEST_ALTITUDE not defined"
#endif
#include <stdio.h>
#include <inttypes.h>
#include "bmp180.h"
#include "xtimer.h"
#include "board.h"
#define SLEEP_2S (2 * 1000 * 1000u) /* 2 seconds delay between printf */
int main(void)
{
bmp180_t dev;
int32_t temperature, pressure, altitude, pressure_0;
int result;
puts("BMP180 test application\n");
printf("+------------Initializing------------+\n");
result = bmp180_init(&dev, TEST_I2C, TEST_MEASURE_OVERSAMPLING);
if (result == -1) {
puts("[Error] The given i2c is not enabled");
return 1;
}
else if (result == -2) {
puts("[Error] The sensor did not answer correctly on the given address");
return 1;
}
else {
printf("Initialization successful\n\n");
}
printf("+------------Calibration------------+\n");
printf("AC1: %i\n", dev.calibration.ac1);
printf("AC2: %i\n", dev.calibration.ac2);
printf("AC3: %i\n", dev.calibration.ac3);
printf("AC4: %i\n", dev.calibration.ac4);
printf("AC5: %i\n", dev.calibration.ac5);
printf("AC6: %i\n", dev.calibration.ac6);
printf("B1: %i\n", dev.calibration.b1);
printf("B2: %i\n", dev.calibration.b2);
printf("MB: %i\n", dev.calibration.mb);
printf("MC: %i\n", dev.calibration.mc);
printf("MD: %i\n", dev.calibration.md);
printf("\n+--------Starting Measurements--------+\n");
while (1) {
/* Get temperature in deci degrees celsius */
bmp180_read_temperature(&dev, &temperature);
/* Get pressure in Pa */
bmp180_read_pressure(&dev, &pressure);
/* Get pressure at sealevel in Pa */
bmp180_sealevel_pressure(&dev, (int32_t)TEST_ALTITUDE, &pressure_0);
/* Get altitude in meters */
bmp180_altitude(&dev, pressure_0, &altitude);
printf("Temperature [°C]: %.1f\n"
"Pressure [hPa]: %.2f\n"
"Pressure at see level [hPa]: %.2f\n"
"Altitude [m]: %i\n"
"\n+-------------------------------------+\n",
(double)temperature / 10.0, (double)pressure / 100.0,
(double)pressure_0 / 100.0, (int)altitude);
xtimer_usleep(SLEEP_2S);
}
return 0;
}