text: /****************************************************************************
   * boards/xtensa/esp32/common/src/esp32_board_tim.c
   *
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.  The
   * ASF licenses this file to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance with the
   * License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations
   * under the License.
   *
   ****************************************************************************/
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <nuttx/config.h>
  
  #include <debug.h>
  #include <sys/types.h>
  #include <nuttx/timers/timer.h>
  
  #include "esp32_tim_lowerhalf.h"
  #include "esp32_board_tim.h"
  
  /****************************************************************************
   * Pre-processor Definitions
   ****************************************************************************/
  
  #ifdef CONFIG_ESP32_TIMER0
  #  define ESP32_TIMER0 (0)
  #endif
  
  #ifdef CONFIG_ESP32_TIMER1
  #  define ESP32_TIMER1 (1)
  #endif
  
  #ifdef CONFIG_ESP32_TIMER2
  #  define ESP32_TIMER2 (2)
  #endif
  
  #ifdef CONFIG_ESP32_TIMER3
  #  define ESP32_TIMER3 (3)
  #endif
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: board_timer_init
   *
   * Description:
   *   Configure the timer driver.
   *
   * Returned Value:
   *   Zero (OK) is returned on success; A negated errno value is returned
   *   to indicate the nature of any failure.
   *
   ****************************************************************************/
  
  int board_timer_init(void)
  {
    int ret = OK;
  
  #ifdef CONFIG_ESP32_TIMER0
    ret = esp32_timer_initialize("/dev/timer0", ESP32_TIMER0);
    if (ret < 0)
      {
        syslog(LOG_ERR,
               "ERROR: Failed to initialize timer driver: %d\n",
               ret);
        goto errout;
      }
  #endif
  
  #ifdef CONFIG_ESP32_TIMER1
    ret = esp32_timer_initialize("/dev/timer1", ESP32_TIMER1);
    if (ret < 0)
      {
        syslog(LOG_ERR,
               "ERROR: Failed to initialize timer driver: %d\n",
               ret);
        goto errout;
      }
  #endif
  
  #ifdef CONFIG_ESP32_TIMER2
    ret = esp32_timer_initialize("/dev/timer2", ESP32_TIMER2);
    if (ret < 0)
      {
        syslog(LOG_ERR,
               "ERROR: Failed to initialize timer driver: %d\n",
               ret);
        goto errout;
      }
  #endif
  
  #ifdef CONFIG_ESP32_TIMER3
    ret = esp32_timer_initialize("/dev/timer3", ESP32_TIMER3);
    if (ret < 0)
      {
        syslog(LOG_ERR,
               "ERROR: Failed to initialize timer driver: %d\n",
               ret);
        goto errout;
      }
  #endif
  
  errout:
    return ret;
  }
  
  