Sergey Solodunov / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

common/pinmap_common.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "pinmap.h"
bogdanm 0:9b334a45a8ff 17 #include "mbed_error.h"
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 void pinmap_pinout(PinName pin, const PinMap *map) {
bogdanm 0:9b334a45a8ff 20 if (pin == NC)
bogdanm 0:9b334a45a8ff 21 return;
bogdanm 0:9b334a45a8ff 22
bogdanm 0:9b334a45a8ff 23 while (map->pin != NC) {
bogdanm 0:9b334a45a8ff 24 if (map->pin == pin) {
bogdanm 0:9b334a45a8ff 25 pin_function(pin, map->function);
bogdanm 0:9b334a45a8ff 26
bogdanm 0:9b334a45a8ff 27 pin_mode(pin, PullNone);
bogdanm 0:9b334a45a8ff 28 return;
bogdanm 0:9b334a45a8ff 29 }
bogdanm 0:9b334a45a8ff 30 map++;
bogdanm 0:9b334a45a8ff 31 }
bogdanm 0:9b334a45a8ff 32 error("could not pinout");
bogdanm 0:9b334a45a8ff 33 }
bogdanm 0:9b334a45a8ff 34
bogdanm 0:9b334a45a8ff 35 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
bogdanm 0:9b334a45a8ff 36 // both are the same (inc both NC)
bogdanm 0:9b334a45a8ff 37 if (a == b)
bogdanm 0:9b334a45a8ff 38 return a;
bogdanm 0:9b334a45a8ff 39
bogdanm 0:9b334a45a8ff 40 // one (or both) is not connected
bogdanm 0:9b334a45a8ff 41 if (a == (uint32_t)NC)
bogdanm 0:9b334a45a8ff 42 return b;
bogdanm 0:9b334a45a8ff 43 if (b == (uint32_t)NC)
bogdanm 0:9b334a45a8ff 44 return a;
bogdanm 0:9b334a45a8ff 45
bogdanm 0:9b334a45a8ff 46 // mis-match error case
bogdanm 0:9b334a45a8ff 47 error("pinmap mis-match");
bogdanm 0:9b334a45a8ff 48 return (uint32_t)NC;
bogdanm 0:9b334a45a8ff 49 }
bogdanm 0:9b334a45a8ff 50
bogdanm 0:9b334a45a8ff 51 uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) {
bogdanm 0:9b334a45a8ff 52 while (map->pin != NC) {
bogdanm 0:9b334a45a8ff 53 if (map->pin == pin)
bogdanm 0:9b334a45a8ff 54 return map->peripheral;
bogdanm 0:9b334a45a8ff 55 map++;
bogdanm 0:9b334a45a8ff 56 }
bogdanm 0:9b334a45a8ff 57 return (uint32_t)NC;
bogdanm 0:9b334a45a8ff 58 }
bogdanm 0:9b334a45a8ff 59
bogdanm 0:9b334a45a8ff 60 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
bogdanm 0:9b334a45a8ff 61 uint32_t peripheral = (uint32_t)NC;
bogdanm 0:9b334a45a8ff 62
bogdanm 0:9b334a45a8ff 63 if (pin == (PinName)NC)
bogdanm 0:9b334a45a8ff 64 return (uint32_t)NC;
bogdanm 0:9b334a45a8ff 65 peripheral = pinmap_find_peripheral(pin, map);
bogdanm 0:9b334a45a8ff 66 if ((uint32_t)NC == peripheral) // no mapping available
bogdanm 0:9b334a45a8ff 67 error("pinmap not found for peripheral");
bogdanm 0:9b334a45a8ff 68 return peripheral;
bogdanm 0:9b334a45a8ff 69 }
bogdanm 0:9b334a45a8ff 70
bogdanm 0:9b334a45a8ff 71 uint32_t pinmap_find_function(PinName pin, const PinMap* map) {
bogdanm 0:9b334a45a8ff 72 while (map->pin != NC) {
bogdanm 0:9b334a45a8ff 73 if (map->pin == pin)
bogdanm 0:9b334a45a8ff 74 return map->function;
bogdanm 0:9b334a45a8ff 75 map++;
bogdanm 0:9b334a45a8ff 76 }
bogdanm 0:9b334a45a8ff 77 return (uint32_t)NC;
bogdanm 0:9b334a45a8ff 78 }
bogdanm 0:9b334a45a8ff 79
bogdanm 0:9b334a45a8ff 80 uint32_t pinmap_function(PinName pin, const PinMap* map) {
bogdanm 0:9b334a45a8ff 81 uint32_t function = (uint32_t)NC;
bogdanm 0:9b334a45a8ff 82
bogdanm 0:9b334a45a8ff 83 if (pin == (PinName)NC)
bogdanm 0:9b334a45a8ff 84 return (uint32_t)NC;
bogdanm 0:9b334a45a8ff 85 function = pinmap_find_function(pin, map);
bogdanm 0:9b334a45a8ff 86 if ((uint32_t)NC == function) // no mapping available
bogdanm 0:9b334a45a8ff 87 error("pinmap not found for function");
bogdanm 0:9b334a45a8ff 88 return function;
bogdanm 0:9b334a45a8ff 89 }