Ermanno Brusadin / mbed-src

mbed library sources

common/pinmap_common.c@0:0a673c671a56, 2016-07-27 (annotated)

Committer:
ebrus
Date:
Wed Jul 27 18:35:32 2016 +0000
Revision:
0:0a673c671a56
4

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ebrus 0:0a673c671a56 1 /* mbed Microcontroller Library
ebrus 0:0a673c671a56 2 * Copyright (c) 2006-2013 ARM Limited
ebrus 0:0a673c671a56 3 *
ebrus 0:0a673c671a56 4 * Licensed under the Apache License, Version 2.0 (the "License");
ebrus 0:0a673c671a56 5 * you may not use this file except in compliance with the License.
ebrus 0:0a673c671a56 6 * You may obtain a copy of the License at
ebrus 0:0a673c671a56 7 *
ebrus 0:0a673c671a56 8 * http://www.apache.org/licenses/LICENSE-2.0
ebrus 0:0a673c671a56 9 *
ebrus 0:0a673c671a56 10 * Unless required by applicable law or agreed to in writing, software
ebrus 0:0a673c671a56 11 * distributed under the License is distributed on an "AS IS" BASIS,
ebrus 0:0a673c671a56 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ebrus 0:0a673c671a56 13 * See the License for the specific language governing permissions and
ebrus 0:0a673c671a56 14 * limitations under the License.
ebrus 0:0a673c671a56 15 */
ebrus 0:0a673c671a56 16 #include "pinmap.h"
ebrus 0:0a673c671a56 17 #include "mbed_error.h"
ebrus 0:0a673c671a56 18
ebrus 0:0a673c671a56 19 void pinmap_pinout(PinName pin, const PinMap *map) {
ebrus 0:0a673c671a56 20 if (pin == NC)
ebrus 0:0a673c671a56 21 return;
ebrus 0:0a673c671a56 22
ebrus 0:0a673c671a56 23 while (map->pin != NC) {
ebrus 0:0a673c671a56 24 if (map->pin == pin) {
ebrus 0:0a673c671a56 25 pin_function(pin, map->function);
ebrus 0:0a673c671a56 26
ebrus 0:0a673c671a56 27 pin_mode(pin, PullNone);
ebrus 0:0a673c671a56 28 return;
ebrus 0:0a673c671a56 29 }
ebrus 0:0a673c671a56 30 map++;
ebrus 0:0a673c671a56 31 }
ebrus 0:0a673c671a56 32 error("could not pinout");
ebrus 0:0a673c671a56 33 }
ebrus 0:0a673c671a56 34
ebrus 0:0a673c671a56 35 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
ebrus 0:0a673c671a56 36 // both are the same (inc both NC)
ebrus 0:0a673c671a56 37 if (a == b)
ebrus 0:0a673c671a56 38 return a;
ebrus 0:0a673c671a56 39
ebrus 0:0a673c671a56 40 // one (or both) is not connected
ebrus 0:0a673c671a56 41 if (a == (uint32_t)NC)
ebrus 0:0a673c671a56 42 return b;
ebrus 0:0a673c671a56 43 if (b == (uint32_t)NC)
ebrus 0:0a673c671a56 44 return a;
ebrus 0:0a673c671a56 45
ebrus 0:0a673c671a56 46 // mis-match error case
ebrus 0:0a673c671a56 47 error("pinmap mis-match");
ebrus 0:0a673c671a56 48 return (uint32_t)NC;
ebrus 0:0a673c671a56 49 }
ebrus 0:0a673c671a56 50
ebrus 0:0a673c671a56 51 uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) {
ebrus 0:0a673c671a56 52 while (map->pin != NC) {
ebrus 0:0a673c671a56 53 if (map->pin == pin)
ebrus 0:0a673c671a56 54 return map->peripheral;
ebrus 0:0a673c671a56 55 map++;
ebrus 0:0a673c671a56 56 }
ebrus 0:0a673c671a56 57 return (uint32_t)NC;
ebrus 0:0a673c671a56 58 }
ebrus 0:0a673c671a56 59
ebrus 0:0a673c671a56 60 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
ebrus 0:0a673c671a56 61 uint32_t peripheral = (uint32_t)NC;
ebrus 0:0a673c671a56 62
ebrus 0:0a673c671a56 63 if (pin == (PinName)NC)
ebrus 0:0a673c671a56 64 return (uint32_t)NC;
ebrus 0:0a673c671a56 65 peripheral = pinmap_find_peripheral(pin, map);
ebrus 0:0a673c671a56 66 if ((uint32_t)NC == peripheral) // no mapping available
ebrus 0:0a673c671a56 67 error("pinmap not found for peripheral");
ebrus 0:0a673c671a56 68 return peripheral;
ebrus 0:0a673c671a56 69 }