sc_sht11.c
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/*
* Copyright (C) 2013 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 sys_shell_commands
* @{
*
* @file
* @brief Provides shell commands to poll sht11 sensor
*
* @author Oliver Hahm <oliver.hahm@inria.fr>
*
* @}
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "sht11.h"
#ifdef MODULE_SHT11
extern float sht11_temperature_offset;
int _get_humidity_handler(int argc, char **argv)
{
(void) argc;
(void) argv;
uint8_t success;
sht11_val_t sht11_val;
success = sht11_read_sensor(&sht11_val, HUMIDITY | TEMPERATURE);
if (!success) {
printf("Error reading SHT11\n");
return 1;
}
else {
printf("Relative humidity: %5.2f%% / Temperature compensated humidity; %5.2f%%\n",
(double) sht11_val.relhum, (double) sht11_val.relhum_temp);
return 0;
}
}
int _get_temperature_handler(int argc, char **argv)
{
(void) argc;
(void) argv;
uint8_t success;
sht11_val_t sht11_val;
success = sht11_read_sensor(&sht11_val, TEMPERATURE);
if (!success) {
printf("Error reading SHT11\n");
return 1;
}
else {
printf("Temperature: %-6.2f°C\n", (double) sht11_val.temperature);
return 0;
}
}
int _get_weather_handler(int argc, char **argv)
{
(void) argc;
(void) argv;
uint8_t success;
sht11_val_t sht11_val;
success = sht11_read_sensor(&sht11_val, HUMIDITY | TEMPERATURE);
if (!success) {
printf("Error reading SHT11\n");
return 1;
}
else {
printf("Relative humidity: %5.2f%% / Temperature compensated humidity; %5.2f%% ",
(double) sht11_val.relhum, (double) sht11_val.relhum_temp);
printf("Temperature: %-6.2f°C\n", (double) sht11_val.temperature);
return 0;
}
}
int _set_offset_handler(int argc, char **argv)
{
if (argc != 2) {
printf("Usage: %s <OFFSET>\n", argv[0]);
return 1;
}
else {
sht11_temperature_offset = atoi(argv[1]);
printf("Temperature offset set to %f\n", (double) sht11_temperature_offset);
return 0;
}
}
#endif