text: /* mbed Microcontroller Library
   * Copyright (c) 2006-2013 ARM Limited
   * SPDX-License-Identifier: Apache-2.0
   *
   * Licensed 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.
   */
  #include "hal/pinmap.h"
  #include "platform/mbed_error.h"
  
  void pinmap_pinout(PinName pin, const PinMap *map)
  {
      if (pin == NC) {
          return;
      }
  
      while (map->pin != NC) {
          if (map->pin == pin) {
              pin_function(pin, map->function);
  
              pin_mode(pin, PullNone);
              return;
          }
          map++;
      }
      MBED_ERROR1(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_PINMAP_INVALID), "could not pinout", pin);
  }
  
  uint32_t pinmap_merge(uint32_t a, uint32_t b)
  {
      // both are the same (inc both NC)
      if (a == b) {
          return a;
      }
  
      // one (or both) is not connected
      if (a == (uint32_t)NC) {
          return b;
      }
      if (b == (uint32_t)NC) {
          return a;
      }
  
      // mis-match error case
      MBED_ERROR1(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_PINMAP_INVALID), "pinmap mis-match", a);
      return (uint32_t)NC;
  }
  
  uint32_t pinmap_find_peripheral(PinName pin, const PinMap *map)
  {
      while (map->pin != NC) {
          if (map->pin == pin) {
              return map->peripheral;
          }
          map++;
      }
      return (uint32_t)NC;
  }
  
  uint32_t pinmap_peripheral(PinName pin, const PinMap *map)
  {
      uint32_t peripheral = (uint32_t)NC;
  
      if (pin == (PinName)NC) {
          return (uint32_t)NC;
      }
      peripheral = pinmap_find_peripheral(pin, map);
      if ((uint32_t)NC == peripheral) { // no mapping available
          MBED_ERROR1(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_PINMAP_INVALID), "pinmap not found for peripheral", peripheral);
      }
      return peripheral;
  }
  
  uint32_t pinmap_find_function(PinName pin, const PinMap *map)
  {
      while (map->pin != NC) {
          if (map->pin == pin) {
              return map->function;
          }
          map++;
      }
      return (uint32_t)NC;
  }
  
  uint32_t pinmap_function(PinName pin, const PinMap *map)
  {
      uint32_t function = (uint32_t)NC;
  
      if (pin == (PinName)NC) {
          return (uint32_t)NC;
      }
      function = pinmap_find_function(pin, map);
      if ((uint32_t)NC == function) { // no mapping available
          MBED_ERROR1(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_PINMAP_INVALID), "pinmap not found for function", function);
      }
      return function;
  }
  