Gan likun / mbed1-dev

001

hal/mbed_pinmap_common.c@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:13413ea9a877 1 /* mbed Microcontroller Library
ganlikun 0:13413ea9a877 2 * Copyright (c) 2006-2013 ARM Limited
ganlikun 0:13413ea9a877 3 *
ganlikun 0:13413ea9a877 4 * Licensed under the Apache License, Version 2.0 (the "License");
ganlikun 0:13413ea9a877 5 * you may not use this file except in compliance with the License.
ganlikun 0:13413ea9a877 6 * You may obtain a copy of the License at
ganlikun 0:13413ea9a877 7 *
ganlikun 0:13413ea9a877 8 * http://www.apache.org/licenses/LICENSE-2.0
ganlikun 0:13413ea9a877 9 *
ganlikun 0:13413ea9a877 10 * Unless required by applicable law or agreed to in writing, software
ganlikun 0:13413ea9a877 11 * distributed under the License is distributed on an "AS IS" BASIS,
ganlikun 0:13413ea9a877 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ganlikun 0:13413ea9a877 13 * See the License for the specific language governing permissions and
ganlikun 0:13413ea9a877 14 * limitations under the License.
ganlikun 0:13413ea9a877 15 */
ganlikun 0:13413ea9a877 16 #include "hal/pinmap.h"
ganlikun 0:13413ea9a877 17 #include "platform/mbed_error.h"
ganlikun 0:13413ea9a877 18
ganlikun 0:13413ea9a877 19 void pinmap_pinout(PinName pin, const PinMap *map) {
ganlikun 0:13413ea9a877 20 if (pin == NC)
ganlikun 0:13413ea9a877 21 return;
ganlikun 0:13413ea9a877 22
ganlikun 0:13413ea9a877 23 while (map->pin != NC) {
ganlikun 0:13413ea9a877 24 if (map->pin == pin) {
ganlikun 0:13413ea9a877 25 pin_function(pin, map->function);
ganlikun 0:13413ea9a877 26
ganlikun 0:13413ea9a877 27 pin_mode(pin, PullNone);
ganlikun 0:13413ea9a877 28 return;
ganlikun 0:13413ea9a877 29 }
ganlikun 0:13413ea9a877 30 map++;
ganlikun 0:13413ea9a877 31 }
ganlikun 0:13413ea9a877 32 error("could not pinout");
ganlikun 0:13413ea9a877 33 }
ganlikun 0:13413ea9a877 34
ganlikun 0:13413ea9a877 35 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
ganlikun 0:13413ea9a877 36 // both are the same (inc both NC)
ganlikun 0:13413ea9a877 37 if (a == b)
ganlikun 0:13413ea9a877 38 return a;
ganlikun 0:13413ea9a877 39
ganlikun 0:13413ea9a877 40 // one (or both) is not connected
ganlikun 0:13413ea9a877 41 if (a == (uint32_t)NC)
ganlikun 0:13413ea9a877 42 return b;
ganlikun 0:13413ea9a877 43 if (b == (uint32_t)NC)
ganlikun 0:13413ea9a877 44 return a;
ganlikun 0:13413ea9a877 45
ganlikun 0:13413ea9a877 46 // mis-match error case
ganlikun 0:13413ea9a877 47 error("pinmap mis-match");
ganlikun 0:13413ea9a877 48 return (uint32_t)NC;
ganlikun 0:13413ea9a877 49 }
ganlikun 0:13413ea9a877 50
ganlikun 0:13413ea9a877 51 uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) {
ganlikun 0:13413ea9a877 52 while (map->pin != NC) {
ganlikun 0:13413ea9a877 53 if (map->pin == pin)
ganlikun 0:13413ea9a877 54 return map->peripheral;
ganlikun 0:13413ea9a877 55 map++;
ganlikun 0:13413ea9a877 56 }
ganlikun 0:13413ea9a877 57 return (uint32_t)NC;
ganlikun 0:13413ea9a877 58 }
ganlikun 0:13413ea9a877 59
ganlikun 0:13413ea9a877 60 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
ganlikun 0:13413ea9a877 61 uint32_t peripheral = (uint32_t)NC;
ganlikun 0:13413ea9a877 62
ganlikun 0:13413ea9a877 63 if (pin == (PinName)NC)
ganlikun 0:13413ea9a877 64 return (uint32_t)NC;
ganlikun 0:13413ea9a877 65 peripheral = pinmap_find_peripheral(pin, map);
ganlikun 0:13413ea9a877 66 if ((uint32_t)NC == peripheral) // no mapping available
ganlikun 0:13413ea9a877 67 error("pinmap not found for peripheral");
ganlikun 0:13413ea9a877 68 return peripheral;
ganlikun 0:13413ea9a877 69 }
ganlikun 0:13413ea9a877 70
ganlikun 0:13413ea9a877 71 uint32_t pinmap_find_function(PinName pin, const PinMap* map) {
ganlikun 0:13413ea9a877 72 while (map->pin != NC) {
ganlikun 0:13413ea9a877 73 if (map->pin == pin)
ganlikun 0:13413ea9a877 74 return map->function;
ganlikun 0:13413ea9a877 75 map++;
ganlikun 0:13413ea9a877 76 }
ganlikun 0:13413ea9a877 77 return (uint32_t)NC;
ganlikun 0:13413ea9a877 78 }
ganlikun 0:13413ea9a877 79
ganlikun 0:13413ea9a877 80 uint32_t pinmap_function(PinName pin, const PinMap* map) {
ganlikun 0:13413ea9a877 81 uint32_t function = (uint32_t)NC;
ganlikun 0:13413ea9a877 82
ganlikun 0:13413ea9a877 83 if (pin == (PinName)NC)
ganlikun 0:13413ea9a877 84 return (uint32_t)NC;
ganlikun 0:13413ea9a877 85 function = pinmap_find_function(pin, map);
ganlikun 0:13413ea9a877 86 if ((uint32_t)NC == function) // no mapping available
ganlikun 0:13413ea9a877 87 error("pinmap not found for function");
ganlikun 0:13413ea9a877 88 return function;
ganlikun 0:13413ea9a877 89 }
ganlikun 0:13413ea9a877 90