Gan likun / mbed-dev11

hal/mbed_pinmap_common.c@0:06036f8bee2d, 2022-10-24 (annotated)

Committer:
ganlikun
Date:
Mon Oct 24 15:19:39 2022 +0000
Revision:
0:06036f8bee2d
11

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:06036f8bee2d 1 /* mbed Microcontroller Library
ganlikun 0:06036f8bee2d 2 * Copyright (c) 2006-2013 ARM Limited
ganlikun 0:06036f8bee2d 3 *
ganlikun 0:06036f8bee2d 4 * Licensed under the Apache License, Version 2.0 (the "License");
ganlikun 0:06036f8bee2d 5 * you may not use this file except in compliance with the License.
ganlikun 0:06036f8bee2d 6 * You may obtain a copy of the License at
ganlikun 0:06036f8bee2d 7 *
ganlikun 0:06036f8bee2d 8 * http://www.apache.org/licenses/LICENSE-2.0
ganlikun 0:06036f8bee2d 9 *
ganlikun 0:06036f8bee2d 10 * Unless required by applicable law or agreed to in writing, software
ganlikun 0:06036f8bee2d 11 * distributed under the License is distributed on an "AS IS" BASIS,
ganlikun 0:06036f8bee2d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ganlikun 0:06036f8bee2d 13 * See the License for the specific language governing permissions and
ganlikun 0:06036f8bee2d 14 * limitations under the License.
ganlikun 0:06036f8bee2d 15 */
ganlikun 0:06036f8bee2d 16 #include "hal/pinmap.h"
ganlikun 0:06036f8bee2d 17 #include "platform/mbed_error.h"
ganlikun 0:06036f8bee2d 18
ganlikun 0:06036f8bee2d 19 void pinmap_pinout(PinName pin, const PinMap *map) {
ganlikun 0:06036f8bee2d 20 if (pin == NC)
ganlikun 0:06036f8bee2d 21 return;
ganlikun 0:06036f8bee2d 22
ganlikun 0:06036f8bee2d 23 while (map->pin != NC) {
ganlikun 0:06036f8bee2d 24 if (map->pin == pin) {
ganlikun 0:06036f8bee2d 25 pin_function(pin, map->function);
ganlikun 0:06036f8bee2d 26
ganlikun 0:06036f8bee2d 27 pin_mode(pin, PullNone);
ganlikun 0:06036f8bee2d 28 return;
ganlikun 0:06036f8bee2d 29 }
ganlikun 0:06036f8bee2d 30 map++;
ganlikun 0:06036f8bee2d 31 }
ganlikun 0:06036f8bee2d 32 error("could not pinout");
ganlikun 0:06036f8bee2d 33 }
ganlikun 0:06036f8bee2d 34
ganlikun 0:06036f8bee2d 35 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
ganlikun 0:06036f8bee2d 36 // both are the same (inc both NC)
ganlikun 0:06036f8bee2d 37 if (a == b)
ganlikun 0:06036f8bee2d 38 return a;
ganlikun 0:06036f8bee2d 39
ganlikun 0:06036f8bee2d 40 // one (or both) is not connected
ganlikun 0:06036f8bee2d 41 if (a == (uint32_t)NC)
ganlikun 0:06036f8bee2d 42 return b;
ganlikun 0:06036f8bee2d 43 if (b == (uint32_t)NC)
ganlikun 0:06036f8bee2d 44 return a;
ganlikun 0:06036f8bee2d 45
ganlikun 0:06036f8bee2d 46 // mis-match error case
ganlikun 0:06036f8bee2d 47 error("pinmap mis-match");
ganlikun 0:06036f8bee2d 48 return (uint32_t)NC;
ganlikun 0:06036f8bee2d 49 }
ganlikun 0:06036f8bee2d 50
ganlikun 0:06036f8bee2d 51 uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) {
ganlikun 0:06036f8bee2d 52 while (map->pin != NC) {
ganlikun 0:06036f8bee2d 53 if (map->pin == pin)
ganlikun 0:06036f8bee2d 54 return map->peripheral;
ganlikun 0:06036f8bee2d 55 map++;
ganlikun 0:06036f8bee2d 56 }
ganlikun 0:06036f8bee2d 57 return (uint32_t)NC;
ganlikun 0:06036f8bee2d 58 }
ganlikun 0:06036f8bee2d 59
ganlikun 0:06036f8bee2d 60 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
ganlikun 0:06036f8bee2d 61 uint32_t peripheral = (uint32_t)NC;
ganlikun 0:06036f8bee2d 62
ganlikun 0:06036f8bee2d 63 if (pin == (PinName)NC)
ganlikun 0:06036f8bee2d 64 return (uint32_t)NC;
ganlikun 0:06036f8bee2d 65 peripheral = pinmap_find_peripheral(pin, map);
ganlikun 0:06036f8bee2d 66 if ((uint32_t)NC == peripheral) // no mapping available
ganlikun 0:06036f8bee2d 67 error("pinmap not found for peripheral");
ganlikun 0:06036f8bee2d 68 return peripheral;
ganlikun 0:06036f8bee2d 69 }
ganlikun 0:06036f8bee2d 70
ganlikun 0:06036f8bee2d 71 uint32_t pinmap_find_function(PinName pin, const PinMap* map) {
ganlikun 0:06036f8bee2d 72 while (map->pin != NC) {
ganlikun 0:06036f8bee2d 73 if (map->pin == pin)
ganlikun 0:06036f8bee2d 74 return map->function;
ganlikun 0:06036f8bee2d 75 map++;
ganlikun 0:06036f8bee2d 76 }
ganlikun 0:06036f8bee2d 77 return (uint32_t)NC;
ganlikun 0:06036f8bee2d 78 }
ganlikun 0:06036f8bee2d 79
ganlikun 0:06036f8bee2d 80 uint32_t pinmap_function(PinName pin, const PinMap* map) {
ganlikun 0:06036f8bee2d 81 uint32_t function = (uint32_t)NC;
ganlikun 0:06036f8bee2d 82
ganlikun 0:06036f8bee2d 83 if (pin == (PinName)NC)
ganlikun 0:06036f8bee2d 84 return (uint32_t)NC;
ganlikun 0:06036f8bee2d 85 function = pinmap_find_function(pin, map);
ganlikun 0:06036f8bee2d 86 if ((uint32_t)NC == function) // no mapping available
ganlikun 0:06036f8bee2d 87 error("pinmap not found for function");
ganlikun 0:06036f8bee2d 88 return function;
ganlikun 0:06036f8bee2d 89 }
ganlikun 0:06036f8bee2d 90