File content as of revision 0:fd0d7bdfcdc2:

/* mbed Microcontroller Library
 * Copyright (c) 2006-2012 ARM Limited
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#include "pinmap.h"
#include "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++;
    }
    error("could not pinout");
}

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
    error("pinmap mis-match");
    return (uint32_t)NC;
}

uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
    if (pin == (uint32_t)NC)
        return (uint32_t)NC;
    
    while (map->pin != NC) {
        if (map->pin == pin)
            return map->peripheral;
        map++;
    }
    
    // no mapping available
    error("pinmap not found for peripheral");
    return (uint32_t)NC;
}