Lancaster University / mbed-src

Lancaster University's (short term!) clone of mbed-src for micro:bit. This is a copy of the github branch https://github.com/lancaster-university/mbed-classic

Fork of mbed-src by mbed official

capi/pinmap_common.c@0:fd0d7bdfcdc2, 2012-11-20 (annotated)

Committer:
mbed_official
Date:
Tue Nov 20 17:24:08 2012 +0000
Revision:
0:fd0d7bdfcdc2
Child:
2:143cac498751
mbed sources

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:fd0d7bdfcdc2 1 /* mbed Microcontroller Library
mbed_official 0:fd0d7bdfcdc2 2 * Copyright (c) 2006-2012 ARM Limited
mbed_official 0:fd0d7bdfcdc2 3 *
mbed_official 0:fd0d7bdfcdc2 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
mbed_official 0:fd0d7bdfcdc2 5 * of this software and associated documentation files (the "Software"), to deal
mbed_official 0:fd0d7bdfcdc2 6 * in the Software without restriction, including without limitation the rights
mbed_official 0:fd0d7bdfcdc2 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mbed_official 0:fd0d7bdfcdc2 8 * copies of the Software, and to permit persons to whom the Software is
mbed_official 0:fd0d7bdfcdc2 9 * furnished to do so, subject to the following conditions:
mbed_official 0:fd0d7bdfcdc2 10 *
mbed_official 0:fd0d7bdfcdc2 11 * The above copyright notice and this permission notice shall be included in
mbed_official 0:fd0d7bdfcdc2 12 * all copies or substantial portions of the Software.
mbed_official 0:fd0d7bdfcdc2 13 *
mbed_official 0:fd0d7bdfcdc2 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mbed_official 0:fd0d7bdfcdc2 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mbed_official 0:fd0d7bdfcdc2 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mbed_official 0:fd0d7bdfcdc2 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mbed_official 0:fd0d7bdfcdc2 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mbed_official 0:fd0d7bdfcdc2 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
mbed_official 0:fd0d7bdfcdc2 20 * SOFTWARE.
mbed_official 0:fd0d7bdfcdc2 21 */
mbed_official 0:fd0d7bdfcdc2 22 #include "pinmap.h"
mbed_official 0:fd0d7bdfcdc2 23 #include "error.h"
mbed_official 0:fd0d7bdfcdc2 24
mbed_official 0:fd0d7bdfcdc2 25 void pinmap_pinout(PinName pin, const PinMap *map) {
mbed_official 0:fd0d7bdfcdc2 26 if (pin == NC) return;
mbed_official 0:fd0d7bdfcdc2 27
mbed_official 0:fd0d7bdfcdc2 28 while (map->pin != NC) {
mbed_official 0:fd0d7bdfcdc2 29 if (map->pin == pin) {
mbed_official 0:fd0d7bdfcdc2 30 pin_function(pin, map->function);
mbed_official 0:fd0d7bdfcdc2 31 pin_mode(pin, PullNone);
mbed_official 0:fd0d7bdfcdc2 32 return;
mbed_official 0:fd0d7bdfcdc2 33 }
mbed_official 0:fd0d7bdfcdc2 34 map++;
mbed_official 0:fd0d7bdfcdc2 35 }
mbed_official 0:fd0d7bdfcdc2 36 error("could not pinout");
mbed_official 0:fd0d7bdfcdc2 37 }
mbed_official 0:fd0d7bdfcdc2 38
mbed_official 0:fd0d7bdfcdc2 39 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
mbed_official 0:fd0d7bdfcdc2 40 // both are the same (inc both NC)
mbed_official 0:fd0d7bdfcdc2 41 if (a == b) return a;
mbed_official 0:fd0d7bdfcdc2 42
mbed_official 0:fd0d7bdfcdc2 43 // one (or both) is not connected
mbed_official 0:fd0d7bdfcdc2 44 if (a == (uint32_t)NC) return b;
mbed_official 0:fd0d7bdfcdc2 45 if (b == (uint32_t)NC) return a;
mbed_official 0:fd0d7bdfcdc2 46
mbed_official 0:fd0d7bdfcdc2 47 // mis-match error case
mbed_official 0:fd0d7bdfcdc2 48 error("pinmap mis-match");
mbed_official 0:fd0d7bdfcdc2 49 return (uint32_t)NC;
mbed_official 0:fd0d7bdfcdc2 50 }
mbed_official 0:fd0d7bdfcdc2 51
mbed_official 0:fd0d7bdfcdc2 52 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
mbed_official 0:fd0d7bdfcdc2 53 if (pin == (uint32_t)NC)
mbed_official 0:fd0d7bdfcdc2 54 return (uint32_t)NC;
mbed_official 0:fd0d7bdfcdc2 55
mbed_official 0:fd0d7bdfcdc2 56 while (map->pin != NC) {
mbed_official 0:fd0d7bdfcdc2 57 if (map->pin == pin)
mbed_official 0:fd0d7bdfcdc2 58 return map->peripheral;
mbed_official 0:fd0d7bdfcdc2 59 map++;
mbed_official 0:fd0d7bdfcdc2 60 }
mbed_official 0:fd0d7bdfcdc2 61
mbed_official 0:fd0d7bdfcdc2 62 // no mapping available
mbed_official 0:fd0d7bdfcdc2 63 error("pinmap not found for peripheral");
mbed_official 0:fd0d7bdfcdc2 64 return (uint32_t)NC;
mbed_official 0:fd0d7bdfcdc2 65 }