Elijah Stanger-Jones / mbed-dev-f303

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hal/mbed_pinmap_common.c@1:8a094db1347f, 2020-11-09 (annotated)

Committer:
elijahsj
Date:
Mon Nov 09 00:02:47 2020 -0500
Revision:
1:8a094db1347f
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elijahsj 1:8a094db1347f 1 /* mbed Microcontroller Library
elijahsj 1:8a094db1347f 2 * Copyright (c) 2006-2013 ARM Limited
elijahsj 1:8a094db1347f 3 *
elijahsj 1:8a094db1347f 4 * Licensed under the Apache License, Version 2.0 (the "License");
elijahsj 1:8a094db1347f 5 * you may not use this file except in compliance with the License.
elijahsj 1:8a094db1347f 6 * You may obtain a copy of the License at
elijahsj 1:8a094db1347f 7 *
elijahsj 1:8a094db1347f 8 * http://www.apache.org/licenses/LICENSE-2.0
elijahsj 1:8a094db1347f 9 *
elijahsj 1:8a094db1347f 10 * Unless required by applicable law or agreed to in writing, software
elijahsj 1:8a094db1347f 11 * distributed under the License is distributed on an "AS IS" BASIS,
elijahsj 1:8a094db1347f 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elijahsj 1:8a094db1347f 13 * See the License for the specific language governing permissions and
elijahsj 1:8a094db1347f 14 * limitations under the License.
elijahsj 1:8a094db1347f 15 */
elijahsj 1:8a094db1347f 16 #include "hal/pinmap.h"
elijahsj 1:8a094db1347f 17 #include "platform/mbed_error.h"
elijahsj 1:8a094db1347f 18
elijahsj 1:8a094db1347f 19 void pinmap_pinout(PinName pin, const PinMap *map) {
elijahsj 1:8a094db1347f 20 if (pin == NC)
elijahsj 1:8a094db1347f 21 return;
elijahsj 1:8a094db1347f 22
elijahsj 1:8a094db1347f 23 while (map->pin != NC) {
elijahsj 1:8a094db1347f 24 if (map->pin == pin) {
elijahsj 1:8a094db1347f 25 pin_function(pin, map->function);
elijahsj 1:8a094db1347f 26
elijahsj 1:8a094db1347f 27 pin_mode(pin, PullNone);
elijahsj 1:8a094db1347f 28 return;
elijahsj 1:8a094db1347f 29 }
elijahsj 1:8a094db1347f 30 map++;
elijahsj 1:8a094db1347f 31 }
elijahsj 1:8a094db1347f 32 error("could not pinout");
elijahsj 1:8a094db1347f 33 }
elijahsj 1:8a094db1347f 34
elijahsj 1:8a094db1347f 35 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
elijahsj 1:8a094db1347f 36 // both are the same (inc both NC)
elijahsj 1:8a094db1347f 37 if (a == b)
elijahsj 1:8a094db1347f 38 return a;
elijahsj 1:8a094db1347f 39
elijahsj 1:8a094db1347f 40 // one (or both) is not connected
elijahsj 1:8a094db1347f 41 if (a == (uint32_t)NC)
elijahsj 1:8a094db1347f 42 return b;
elijahsj 1:8a094db1347f 43 if (b == (uint32_t)NC)
elijahsj 1:8a094db1347f 44 return a;
elijahsj 1:8a094db1347f 45
elijahsj 1:8a094db1347f 46 // mis-match error case
elijahsj 1:8a094db1347f 47 error("pinmap mis-match");
elijahsj 1:8a094db1347f 48 return (uint32_t)NC;
elijahsj 1:8a094db1347f 49 }
elijahsj 1:8a094db1347f 50
elijahsj 1:8a094db1347f 51 uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) {
elijahsj 1:8a094db1347f 52 while (map->pin != NC) {
elijahsj 1:8a094db1347f 53 if (map->pin == pin)
elijahsj 1:8a094db1347f 54 return map->peripheral;
elijahsj 1:8a094db1347f 55 map++;
elijahsj 1:8a094db1347f 56 }
elijahsj 1:8a094db1347f 57 return (uint32_t)NC;
elijahsj 1:8a094db1347f 58 }
elijahsj 1:8a094db1347f 59
elijahsj 1:8a094db1347f 60 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
elijahsj 1:8a094db1347f 61 uint32_t peripheral = (uint32_t)NC;
elijahsj 1:8a094db1347f 62
elijahsj 1:8a094db1347f 63 if (pin == (PinName)NC)
elijahsj 1:8a094db1347f 64 return (uint32_t)NC;
elijahsj 1:8a094db1347f 65 peripheral = pinmap_find_peripheral(pin, map);
elijahsj 1:8a094db1347f 66 if ((uint32_t)NC == peripheral) // no mapping available
elijahsj 1:8a094db1347f 67 error("pinmap not found for peripheral");
elijahsj 1:8a094db1347f 68 return peripheral;
elijahsj 1:8a094db1347f 69 }
elijahsj 1:8a094db1347f 70
elijahsj 1:8a094db1347f 71 uint32_t pinmap_find_function(PinName pin, const PinMap* map) {
elijahsj 1:8a094db1347f 72 while (map->pin != NC) {
elijahsj 1:8a094db1347f 73 if (map->pin == pin)
elijahsj 1:8a094db1347f 74 return map->function;
elijahsj 1:8a094db1347f 75 map++;
elijahsj 1:8a094db1347f 76 }
elijahsj 1:8a094db1347f 77 return (uint32_t)NC;
elijahsj 1:8a094db1347f 78 }
elijahsj 1:8a094db1347f 79
elijahsj 1:8a094db1347f 80 uint32_t pinmap_function(PinName pin, const PinMap* map) {
elijahsj 1:8a094db1347f 81 uint32_t function = (uint32_t)NC;
elijahsj 1:8a094db1347f 82
elijahsj 1:8a094db1347f 83 if (pin == (PinName)NC)
elijahsj 1:8a094db1347f 84 return (uint32_t)NC;
elijahsj 1:8a094db1347f 85 function = pinmap_find_function(pin, map);
elijahsj 1:8a094db1347f 86 if ((uint32_t)NC == function) // no mapping available
elijahsj 1:8a094db1347f 87 error("pinmap not found for function");
elijahsj 1:8a094db1347f 88 return function;
elijahsj 1:8a094db1347f 89 }