Thor Hall / mbed-dev_mbed_lib_v125

This fork captures the mbed lib v125 for ease of integration into older projects.

Fork of mbed-dev by mbed official

common/mbed_pinmap_common.c@187:92cbb9eec47b, 2018-07-20 (annotated)

Committer:
apluscw
Date:
Fri Jul 20 21:24:42 2018 +0000
Revision:
187:92cbb9eec47b
Parent:
144:ef7eb2e8f9f7 
Mbed library with source code from mbed lib v125. Posted to ease integration with some older projects.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 17 #include "mbed_error.h"
<> 144:ef7eb2e8f9f7 18
<> 144:ef7eb2e8f9f7 19 void pinmap_pinout(PinName pin, const PinMap *map) {
<> 144:ef7eb2e8f9f7 20 if (pin == NC)
<> 144:ef7eb2e8f9f7 21 return;
<> 144:ef7eb2e8f9f7 22
<> 144:ef7eb2e8f9f7 23 while (map->pin != NC) {
<> 144:ef7eb2e8f9f7 24 if (map->pin == pin) {
<> 144:ef7eb2e8f9f7 25 pin_function(pin, map->function);
<> 144:ef7eb2e8f9f7 26
<> 144:ef7eb2e8f9f7 27 pin_mode(pin, PullNone);
<> 144:ef7eb2e8f9f7 28 return;
<> 144:ef7eb2e8f9f7 29 }
<> 144:ef7eb2e8f9f7 30 map++;
<> 144:ef7eb2e8f9f7 31 }
<> 144:ef7eb2e8f9f7 32 error("could not pinout");
<> 144:ef7eb2e8f9f7 33 }
<> 144:ef7eb2e8f9f7 34
<> 144:ef7eb2e8f9f7 35 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
<> 144:ef7eb2e8f9f7 36 // both are the same (inc both NC)
<> 144:ef7eb2e8f9f7 37 if (a == b)
<> 144:ef7eb2e8f9f7 38 return a;
<> 144:ef7eb2e8f9f7 39
<> 144:ef7eb2e8f9f7 40 // one (or both) is not connected
<> 144:ef7eb2e8f9f7 41 if (a == (uint32_t)NC)
<> 144:ef7eb2e8f9f7 42 return b;
<> 144:ef7eb2e8f9f7 43 if (b == (uint32_t)NC)
<> 144:ef7eb2e8f9f7 44 return a;
<> 144:ef7eb2e8f9f7 45
<> 144:ef7eb2e8f9f7 46 // mis-match error case
<> 144:ef7eb2e8f9f7 47 error("pinmap mis-match");
<> 144:ef7eb2e8f9f7 48 return (uint32_t)NC;
<> 144:ef7eb2e8f9f7 49 }
<> 144:ef7eb2e8f9f7 50
<> 144:ef7eb2e8f9f7 51 uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) {
<> 144:ef7eb2e8f9f7 52 while (map->pin != NC) {
<> 144:ef7eb2e8f9f7 53 if (map->pin == pin)
<> 144:ef7eb2e8f9f7 54 return map->peripheral;
<> 144:ef7eb2e8f9f7 55 map++;
<> 144:ef7eb2e8f9f7 56 }
<> 144:ef7eb2e8f9f7 57 return (uint32_t)NC;
<> 144:ef7eb2e8f9f7 58 }
<> 144:ef7eb2e8f9f7 59
<> 144:ef7eb2e8f9f7 60 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
<> 144:ef7eb2e8f9f7 61 uint32_t peripheral = (uint32_t)NC;
<> 144:ef7eb2e8f9f7 62
<> 144:ef7eb2e8f9f7 63 if (pin == (PinName)NC)
<> 144:ef7eb2e8f9f7 64 return (uint32_t)NC;
<> 144:ef7eb2e8f9f7 65 peripheral = pinmap_find_peripheral(pin, map);
<> 144:ef7eb2e8f9f7 66 if ((uint32_t)NC == peripheral) // no mapping available
<> 144:ef7eb2e8f9f7 67 error("pinmap not found for peripheral");
<> 144:ef7eb2e8f9f7 68 return peripheral;
<> 144:ef7eb2e8f9f7 69 }
<> 144:ef7eb2e8f9f7 70
<> 144:ef7eb2e8f9f7 71 uint32_t pinmap_find_function(PinName pin, const PinMap* map) {
<> 144:ef7eb2e8f9f7 72 while (map->pin != NC) {
<> 144:ef7eb2e8f9f7 73 if (map->pin == pin)
<> 144:ef7eb2e8f9f7 74 return map->function;
<> 144:ef7eb2e8f9f7 75 map++;
<> 144:ef7eb2e8f9f7 76 }
<> 144:ef7eb2e8f9f7 77 return (uint32_t)NC;
<> 144:ef7eb2e8f9f7 78 }
<> 144:ef7eb2e8f9f7 79
<> 144:ef7eb2e8f9f7 80 uint32_t pinmap_function(PinName pin, const PinMap* map) {
<> 144:ef7eb2e8f9f7 81 uint32_t function = (uint32_t)NC;
<> 144:ef7eb2e8f9f7 82
<> 144:ef7eb2e8f9f7 83 if (pin == (PinName)NC)
<> 144:ef7eb2e8f9f7 84 return (uint32_t)NC;
<> 144:ef7eb2e8f9f7 85 function = pinmap_find_function(pin, map);
<> 144:ef7eb2e8f9f7 86 if ((uint32_t)NC == function) // no mapping available
<> 144:ef7eb2e8f9f7 87 error("pinmap not found for function");
<> 144:ef7eb2e8f9f7 88 return function;
<> 144:ef7eb2e8f9f7 89 }