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@2:143cac498751, 2013-02-18 (annotated)

Committer:
emilmont
Date:
Mon Feb 18 11:44:18 2013 +0000
Revision:
2:143cac498751
Parent:
0:fd0d7bdfcdc2 
Update mbed sources to Rev 59

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:fd0d7bdfcdc2 1 /* mbed Microcontroller Library
emilmont 2:143cac498751 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 0:fd0d7bdfcdc2 3 *
emilmont 2:143cac498751 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 2:143cac498751 5 * you may not use this file except in compliance with the License.
emilmont 2:143cac498751 6 * You may obtain a copy of the License at
mbed_official 0:fd0d7bdfcdc2 7 *
emilmont 2:143cac498751 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 0:fd0d7bdfcdc2 9 *
emilmont 2:143cac498751 10 * Unless required by applicable law or agreed to in writing, software
emilmont 2:143cac498751 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 2:143cac498751 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 2:143cac498751 13 * See the License for the specific language governing permissions and
emilmont 2:143cac498751 14 * limitations under the License.
mbed_official 0:fd0d7bdfcdc2 15 */
mbed_official 0:fd0d7bdfcdc2 16 #include "pinmap.h"
mbed_official 0:fd0d7bdfcdc2 17 #include "error.h"
mbed_official 0:fd0d7bdfcdc2 18
mbed_official 0:fd0d7bdfcdc2 19 void pinmap_pinout(PinName pin, const PinMap *map) {
mbed_official 0:fd0d7bdfcdc2 20 if (pin == NC) return;
emilmont 2:143cac498751 21
mbed_official 0:fd0d7bdfcdc2 22 while (map->pin != NC) {
mbed_official 0:fd0d7bdfcdc2 23 if (map->pin == pin) {
mbed_official 0:fd0d7bdfcdc2 24 pin_function(pin, map->function);
mbed_official 0:fd0d7bdfcdc2 25 pin_mode(pin, PullNone);
mbed_official 0:fd0d7bdfcdc2 26 return;
mbed_official 0:fd0d7bdfcdc2 27 }
mbed_official 0:fd0d7bdfcdc2 28 map++;
mbed_official 0:fd0d7bdfcdc2 29 }
mbed_official 0:fd0d7bdfcdc2 30 error("could not pinout");
mbed_official 0:fd0d7bdfcdc2 31 }
mbed_official 0:fd0d7bdfcdc2 32
mbed_official 0:fd0d7bdfcdc2 33 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
mbed_official 0:fd0d7bdfcdc2 34 // both are the same (inc both NC)
mbed_official 0:fd0d7bdfcdc2 35 if (a == b) return a;
emilmont 2:143cac498751 36
mbed_official 0:fd0d7bdfcdc2 37 // one (or both) is not connected
mbed_official 0:fd0d7bdfcdc2 38 if (a == (uint32_t)NC) return b;
mbed_official 0:fd0d7bdfcdc2 39 if (b == (uint32_t)NC) return a;
emilmont 2:143cac498751 40
mbed_official 0:fd0d7bdfcdc2 41 // mis-match error case
mbed_official 0:fd0d7bdfcdc2 42 error("pinmap mis-match");
mbed_official 0:fd0d7bdfcdc2 43 return (uint32_t)NC;
mbed_official 0:fd0d7bdfcdc2 44 }
mbed_official 0:fd0d7bdfcdc2 45
mbed_official 0:fd0d7bdfcdc2 46 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
mbed_official 0:fd0d7bdfcdc2 47 if (pin == (uint32_t)NC)
mbed_official 0:fd0d7bdfcdc2 48 return (uint32_t)NC;
emilmont 2:143cac498751 49
mbed_official 0:fd0d7bdfcdc2 50 while (map->pin != NC) {
mbed_official 0:fd0d7bdfcdc2 51 if (map->pin == pin)
mbed_official 0:fd0d7bdfcdc2 52 return map->peripheral;
mbed_official 0:fd0d7bdfcdc2 53 map++;
mbed_official 0:fd0d7bdfcdc2 54 }
emilmont 2:143cac498751 55
mbed_official 0:fd0d7bdfcdc2 56 // no mapping available
mbed_official 0:fd0d7bdfcdc2 57 error("pinmap not found for peripheral");
mbed_official 0:fd0d7bdfcdc2 58 return (uint32_t)NC;
mbed_official 0:fd0d7bdfcdc2 59 }