Jonathan Piat / mbed-src

mbed library sources

Fork of mbed-src by mbed official

common/pinmap_common.c@227:7bd0639b8911, 2014-06-11 (annotated)

Committer:
mbed_official
Date:
Wed Jun 11 16:00:09 2014 +0100
Revision:
227:7bd0639b8911
Parent:
221:8276e3a4886f
Child:
250:a49055e7a707
Synchronized with git revision d58d532ebc0e0a96f4fffb8edefc082b71b964af



Full URL: https://github.com/mbedmicro/mbed/commit/d58d532ebc0e0a96f4fffb8edefc082b71b964af/

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) {
mbed_official 227:7bd0639b8911 20 if (pin == NC)
mbed_official 227:7bd0639b8911 21 return;
emilmont 10:3bc89ef62ce7 22
emilmont 10:3bc89ef62ce7 23 while (map->pin != NC) {
emilmont 10:3bc89ef62ce7 24 if (map->pin == pin) {
emilmont 10:3bc89ef62ce7 25 pin_function(pin, map->function);
mbed_official 221:8276e3a4886f 26
emilmont 10:3bc89ef62ce7 27 pin_mode(pin, PullNone);
emilmont 10:3bc89ef62ce7 28 return;
emilmont 10:3bc89ef62ce7 29 }
emilmont 10:3bc89ef62ce7 30 map++;
emilmont 10:3bc89ef62ce7 31 }
emilmont 10:3bc89ef62ce7 32 error("could not pinout");
emilmont 10:3bc89ef62ce7 33 }
emilmont 10:3bc89ef62ce7 34
emilmont 10:3bc89ef62ce7 35 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
emilmont 10:3bc89ef62ce7 36 // both are the same (inc both NC)
mbed_official 227:7bd0639b8911 37 if (a == b)
mbed_official 227:7bd0639b8911 38 return a;
emilmont 10:3bc89ef62ce7 39
emilmont 10:3bc89ef62ce7 40 // one (or both) is not connected
mbed_official 227:7bd0639b8911 41 if (a == (uint32_t)NC)
mbed_official 227:7bd0639b8911 42 return b;
mbed_official 227:7bd0639b8911 43 if (b == (uint32_t)NC)
mbed_official 227:7bd0639b8911 44 return a;
emilmont 10:3bc89ef62ce7 45
emilmont 10:3bc89ef62ce7 46 // mis-match error case
emilmont 10:3bc89ef62ce7 47 error("pinmap mis-match");
emilmont 10:3bc89ef62ce7 48 return (uint32_t)NC;
emilmont 10:3bc89ef62ce7 49 }
emilmont 10:3bc89ef62ce7 50
mbed_official 64:7b352733b00a 51 uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) {
emilmont 10:3bc89ef62ce7 52 while (map->pin != NC) {
emilmont 10:3bc89ef62ce7 53 if (map->pin == pin)
emilmont 10:3bc89ef62ce7 54 return map->peripheral;
emilmont 10:3bc89ef62ce7 55 map++;
emilmont 10:3bc89ef62ce7 56 }
emilmont 10:3bc89ef62ce7 57 return (uint32_t)NC;
emilmont 10:3bc89ef62ce7 58 }
mbed_official 64:7b352733b00a 59
mbed_official 64:7b352733b00a 60 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
mbed_official 64:7b352733b00a 61 uint32_t peripheral = (uint32_t)NC;
mbed_official 64:7b352733b00a 62
mbed_official 64:7b352733b00a 63 if (pin == (PinName)NC)
mbed_official 64:7b352733b00a 64 return (uint32_t)NC;
mbed_official 64:7b352733b00a 65 peripheral = pinmap_find_peripheral(pin, map);
mbed_official 64:7b352733b00a 66 if ((uint32_t)NC == peripheral) // no mapping available
mbed_official 64:7b352733b00a 67 error("pinmap not found for peripheral");
mbed_official 64:7b352733b00a 68 return peripheral;
mbed_official 64:7b352733b00a 69 }