farmOS/farm_sensor.module

<?php
/**
 * @file
 * Code for the Farm Sensor feature.
 */

include_once 'farm_sensor.features.inc';

/**
 * Implements hook_farm_sensor_type_info().
 */
function farm_sensor_farm_sensor_type_info() {
  return array(
    'none' => array(
      'label' => t('None'),
      'description' => t('No sensor type.'),
    ),
  );
}

/**
 * Get farm sensor types.
 *
 * @return array
 *   Returns an array of sensors type information provided by other modules.
 */
function farm_sensor_types() {

  // Gather type information from other modules.
  $sensor_types = module_invoke_all('farm_sensor_type_info');

  // Return it.
  return $sensor_types;
}

/**
 * Helper function for saving farm sensor information.
 *
 * @param int $id
 *   The farm sensor asset id.
 * @param string $type
 *   The sensor type.
 * @param array $settings
 *   An array of sensor settings.
 */
function farm_sensor_save($id, $type, $settings = array()) {

  // Delete any existing
  farm_sensor_delete($id);

  // Insert a new record.
  $record = array(
    'id' => $id,
    'type' => $type,
    'settings' => $settings,
  );
  drupal_write_record('farm_sensor', $record);
}

/**
 * Helper function for deleting farm sensor information.
 *
 * @param int $id
 *   The farm sensor asset id.
 */
function farm_sensor_delete($id) {
  db_delete('farm_sensor')->condition('id', $id)->execute();
}