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

common/pinmap_common.c@221:8276e3a4886f, 2014-06-03 (annotated)

Committer:
mbed_official
Date:
Tue Jun 03 11:30:07 2014 +0100
Revision:
221:8276e3a4886f
Parent:
64:7b352733b00a
Child:
227:7bd0639b8911
Synchronized with git revision bcacbb9fbf3432829227430830cca4315b57c1b9



Full URL: https://github.com/mbedmicro/mbed/commit/bcacbb9fbf3432829227430830cca4315b57c1b9/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library
emilmont 10:3bc89ef62ce7 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 10:3bc89ef62ce7 5 * you may not use this file except in compliance with the License.
emilmont 10:3bc89ef62ce7 6 * You may obtain a copy of the License at
emilmont 10:3bc89ef62ce7 7 *
emilmont 10:3bc89ef62ce7 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 10:3bc89ef62ce7 9 *
emilmont 10:3bc89ef62ce7 10 * Unless required by applicable law or agreed to in writing, software
emilmont 10:3bc89ef62ce7 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 10:3bc89ef62ce7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 10:3bc89ef62ce7 13 * See the License for the specific language governing permissions and
emilmont 10:3bc89ef62ce7 14 * limitations under the License.
emilmont 10:3bc89ef62ce7 15 */
emilmont 10:3bc89ef62ce7 16 #include "pinmap.h"
emilmont 10:3bc89ef62ce7 17 #include "error.h"
emilmont 10:3bc89ef62ce7 18
emilmont 10:3bc89ef62ce7 19 void pinmap_pinout(PinName pin, const PinMap *map) {
emilmont 10:3bc89ef62ce7 20 if (pin == NC) return;
emilmont 10:3bc89ef62ce7 21
emilmont 10:3bc89ef62ce7 22 while (map->pin != NC) {
emilmont 10:3bc89ef62ce7 23 if (map->pin == pin) {
emilmont 10:3bc89ef62ce7 24 pin_function(pin, map->function);
mbed_official 221:8276e3a4886f 25
emilmont 10:3bc89ef62ce7 26 pin_mode(pin, PullNone);
emilmont 10:3bc89ef62ce7 27 return;
emilmont 10:3bc89ef62ce7 28 }
emilmont 10:3bc89ef62ce7 29 map++;
emilmont 10:3bc89ef62ce7 30 }
emilmont 10:3bc89ef62ce7 31 error("could not pinout");
emilmont 10:3bc89ef62ce7 32 }
emilmont 10:3bc89ef62ce7 33
emilmont 10:3bc89ef62ce7 34 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
emilmont 10:3bc89ef62ce7 35 // both are the same (inc both NC)
emilmont 10:3bc89ef62ce7 36 if (a == b) return a;
emilmont 10:3bc89ef62ce7 37
emilmont 10:3bc89ef62ce7 38 // one (or both) is not connected
emilmont 10:3bc89ef62ce7 39 if (a == (uint32_t)NC) return b;
emilmont 10:3bc89ef62ce7 40 if (b == (uint32_t)NC) return a;
emilmont 10:3bc89ef62ce7 41
emilmont 10:3bc89ef62ce7 42 // mis-match error case
emilmont 10:3bc89ef62ce7 43 error("pinmap mis-match");
emilmont 10:3bc89ef62ce7 44 return (uint32_t)NC;
emilmont 10:3bc89ef62ce7 45 }
emilmont 10:3bc89ef62ce7 46
mbed_official 64:7b352733b00a 47 uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) {
emilmont 10:3bc89ef62ce7 48 while (map->pin != NC) {
emilmont 10:3bc89ef62ce7 49 if (map->pin == pin)
emilmont 10:3bc89ef62ce7 50 return map->peripheral;
emilmont 10:3bc89ef62ce7 51 map++;
emilmont 10:3bc89ef62ce7 52 }
emilmont 10:3bc89ef62ce7 53 return (uint32_t)NC;
emilmont 10:3bc89ef62ce7 54 }
mbed_official 64:7b352733b00a 55
mbed_official 64:7b352733b00a 56 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
mbed_official 64:7b352733b00a 57 uint32_t peripheral = (uint32_t)NC;
mbed_official 64:7b352733b00a 58
mbed_official 64:7b352733b00a 59 if (pin == (PinName)NC)
mbed_official 64:7b352733b00a 60 return (uint32_t)NC;
mbed_official 64:7b352733b00a 61 peripheral = pinmap_find_peripheral(pin, map);
mbed_official 64:7b352733b00a 62 if ((uint32_t)NC == peripheral) // no mapping available
mbed_official 64:7b352733b00a 63 error("pinmap not found for peripheral");
mbed_official 64:7b352733b00a 64 return peripheral;
mbed_official 64:7b352733b00a 65 }