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RIOT/sys/shell/commands/sc_sht11.c 2.29 KB
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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