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@10:3bc89ef62ce7, 2013-06-14 (annotated)

Committer:
emilmont
Date:
Fri Jun 14 17:49:17 2013 +0100
Revision:
10:3bc89ef62ce7
Parent:
9:0ce32e54c9a7
Child:
13:0645d8841f51
Unify mbed library sources

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);
emilmont 10:3bc89ef62ce7 25 pin_mode(pin, PullNone);
emilmont 10:3bc89ef62ce7 26 return;
emilmont 10:3bc89ef62ce7 27 }
emilmont 10:3bc89ef62ce7 28 map++;
emilmont 10:3bc89ef62ce7 29 }
emilmont 10:3bc89ef62ce7 30 error("could not pinout");
emilmont 10:3bc89ef62ce7 31 }
emilmont 10:3bc89ef62ce7 32
emilmont 10:3bc89ef62ce7 33 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
emilmont 10:3bc89ef62ce7 34 // both are the same (inc both NC)
emilmont 10:3bc89ef62ce7 35 if (a == b) return a;
emilmont 10:3bc89ef62ce7 36
emilmont 10:3bc89ef62ce7 37 // one (or both) is not connected
emilmont 10:3bc89ef62ce7 38 if (a == (uint32_t)NC) return b;
emilmont 10:3bc89ef62ce7 39 if (b == (uint32_t)NC) return a;
emilmont 10:3bc89ef62ce7 40
emilmont 10:3bc89ef62ce7 41 // mis-match error case
emilmont 10:3bc89ef62ce7 42 error("pinmap mis-match");
emilmont 10:3bc89ef62ce7 43 return (uint32_t)NC;
emilmont 10:3bc89ef62ce7 44 }
emilmont 10:3bc89ef62ce7 45
emilmont 10:3bc89ef62ce7 46 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
emilmont 10:3bc89ef62ce7 47 if (pin == (uint32_t)NC)
emilmont 10:3bc89ef62ce7 48 return (uint32_t)NC;
emilmont 10:3bc89ef62ce7 49
emilmont 10:3bc89ef62ce7 50 while (map->pin != NC) {
emilmont 10:3bc89ef62ce7 51 if (map->pin == pin)
emilmont 10:3bc89ef62ce7 52 return map->peripheral;
emilmont 10:3bc89ef62ce7 53 map++;
emilmont 10:3bc89ef62ce7 54 }
emilmont 10:3bc89ef62ce7 55
emilmont 10:3bc89ef62ce7 56 // no mapping available
emilmont 10:3bc89ef62ce7 57 error("pinmap not found for peripheral");
emilmont 10:3bc89ef62ce7 58 return (uint32_t)NC;
emilmont 10:3bc89ef62ce7 59 }