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RIOT/sys/auto_init/saul/auto_init_adc.c 1.71 KB
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  /*
   * Copyright (C) 2016 Eistec AB
   *
   * 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     auto_init_saul
   * @{
   *
   * @file
   * @brief       Auto initialization of ADC lines directly mapped to SAUL reg
   *
   * @author      Joakim Nohlgård <joakim.nohlgard@eistec.se>
   *
   * @}
   */
  
  #ifdef MODULE_SAUL_ADC
  
  #include "log.h"
  #include "saul_reg.h"
  #include "saul/periph.h"
  #include "adc_params.h"
  #include "periph/adc.h"
  
  /**
   * @brief   Define the number of configured sensors
   */
  #define SAUL_ADC_NUMOF    (sizeof(saul_adc_params)/sizeof(saul_adc_params[0]))
  
  /**
   * @brief   Allocate memory for pointers to the ADC parameter structs
   *
   * We use this extra level of indirection to be able to keep the saul_adc_params
   * array const and residing in ROM.
   */
  static const saul_adc_params_t *saul_adcs[SAUL_ADC_NUMOF];
  
  /**
   * @brief   Memory for the registry entries
   */
  static saul_reg_t saul_reg_entries[SAUL_ADC_NUMOF];
  
  /**
   * @brief   Reference the driver struct
   */
  extern saul_driver_t adc_saul_driver;
  
  void auto_init_adc(void)
  {
      for (unsigned i = 0; i < SAUL_ADC_NUMOF; i++) {
          const saul_adc_params_t *p = &saul_adc_params[i];
          saul_adcs[i] = p;
  
          LOG_DEBUG("[auto_init_saul] initializing direct ADC #%u\n", i);
  
          saul_reg_entries[i].dev = &saul_adcs[i];
          saul_reg_entries[i].name = p->name;
          saul_reg_entries[i].driver = &adc_saul_driver;
          /* initialize the ADC line */
          adc_init(p->line);
          /* add to registry */
          saul_reg_add(&(saul_reg_entries[i]));
      }
  }
  
  #else
  typedef int dont_be_pedantic;
  #endif /* MODULE_SAUL_ADC */