text: /****************************************************************************
   * boards/xtensa/esp32s2/esp32s2-saola-1/src/esp32s2-saola-1.h
   *
   * 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.
   *
   ****************************************************************************/
  
  #ifndef __BOARDS_XTENSA_ESP32S2_ESP32S2_SAOLA_1_SRC_ESP32S2_SAOLA_1_H
  #define __BOARDS_XTENSA_ESP32S2_ESP32S2_SAOLA_1_SRC_ESP32S2_SAOLA_1_H
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <nuttx/config.h>
  #include <nuttx/compiler.h>
  #include <stdint.h>
  
  /****************************************************************************
   * Pre-processor Definitions
   ****************************************************************************/
  
  /* ESP32S2-DevKitC GPIOs ****************************************************/
  
  /* BOOT Button */
  
  #define BUTTON_BOOT  0
  
  /* TIMERS */
  
  #define TIMER0 0
  #define TIMER1 1
  #define TIMER2 2
  #define TIMER3 3
  
  /* ONESHOT */
  
  #define ONESHOT_TIMER         TIMER0
  #define ONESHOT_RESOLUTION_US 1
  
  /****************************************************************************
   * Public Types
   ****************************************************************************/
  
  /****************************************************************************
   * Public Data
   ****************************************************************************/
  
  #ifndef __ASSEMBLY__
  
  /****************************************************************************
   * Public Function Prototypes
   ****************************************************************************/
  
  /****************************************************************************
   * Name: esp32s2_bringup
   *
   * Description:
   *   Perform architecture-specific initialization
   *
   *   CONFIG_BOARD_LATE_INITIALIZE=y :
   *     Called from board_late_initialize().
   *
   *   CONFIG_BOARD_LATE_INITIALIZE=y && CONFIG_BOARDCTL=y :
   *     Called from the NSH library via board_app_initialize()
   *
   ****************************************************************************/
  
  int esp32s2_bringup(void);
  
  /****************************************************************************
   * Name: esp32s2_gpio_init
   *
   * Description:
   *   Configure the GPIO driver.
   *
   * Returned Value:
   *   Zero (OK) is returned on success; A negated errno value is returned
   *   to indicate the nature of any failure.
   *
   ****************************************************************************/
  
  #ifdef CONFIG_DEV_GPIO
  int esp32s2_gpio_init(void);
  #endif
  
  /****************************************************************************
   * Name: board_oneshot_init
   *
   * Description:
   *   Configure the oneshot timer driver.
   *
   * Input Parameters:
   *   timer      - Timer instance to be used as oneshot timer.
   *   resolution - Oneshot timer resolution.
   *
   * Returned Value:
   *   Zero (OK) is returned on success; A negated errno value is returned
   *   to indicate the nature of any failure.
   *
   ****************************************************************************/
  
  #ifdef CONFIG_ONESHOT
  int board_oneshot_init(int timer, uint16_t resolution);
  #endif
  
  #endif /* __ASSEMBLY__ */
  #endif /* __BOARDS_XTENSA_ESP32S2_ESP32S2_SAOLA_1_SRC_ESP32S2_SAOLA_1_H */
  