zhang boie / mbed-dev-f30333

hal/mbed_pinmap_common.c@0:bdf663c61a82, 2022-06-14 (annotated)

Committer:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4
Date:
Tue Jun 14 09:21:18 2022 +0000
Revision:
0:bdf663c61a82
lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 1 /* mbed Microcontroller Library
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 2 * Copyright (c) 2006-2013 ARM Limited
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 3 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 4 * Licensed under the Apache License, Version 2.0 (the "License");
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 5 * you may not use this file except in compliance with the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 6 * You may obtain a copy of the License at
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 7 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 8 * http://www.apache.org/licenses/LICENSE-2.0
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 9 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 10 * Unless required by applicable law or agreed to in writing, software
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 11 * distributed under the License is distributed on an "AS IS" BASIS,
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 13 * See the License for the specific language governing permissions and
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 14 * limitations under the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 15 */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 16 #include "hal/pinmap.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 17 #include "platform/mbed_error.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 18
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 19 void pinmap_pinout(PinName pin, const PinMap *map) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 20 if (pin == NC)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 21 return;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 22
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 23 while (map->pin != NC) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 24 if (map->pin == pin) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 25 pin_function(pin, map->function);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 26
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 27 pin_mode(pin, PullNone);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 28 return;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 29 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 30 map++;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 31 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 32 error("could not pinout");
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 33 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 34
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 35 uint32_t pinmap_merge(uint32_t a, uint32_t b) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 36 // both are the same (inc both NC)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 37 if (a == b)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 38 return a;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 39
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 40 // one (or both) is not connected
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 41 if (a == (uint32_t)NC)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 42 return b;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 43 if (b == (uint32_t)NC)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 44 return a;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 45
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 46 // mis-match error case
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 47 error("pinmap mis-match");
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 48 return (uint32_t)NC;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 49 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 50
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 51 uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 52 while (map->pin != NC) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 53 if (map->pin == pin)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 54 return map->peripheral;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 55 map++;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 56 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 57 return (uint32_t)NC;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 58 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 59
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 60 uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 61 uint32_t peripheral = (uint32_t)NC;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 62
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 63 if (pin == (PinName)NC)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 64 return (uint32_t)NC;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 65 peripheral = pinmap_find_peripheral(pin, map);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 66 if ((uint32_t)NC == peripheral) // no mapping available
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 67 error("pinmap not found for peripheral");
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 68 return peripheral;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 69 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 70
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 71 uint32_t pinmap_find_function(PinName pin, const PinMap* map) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 72 while (map->pin != NC) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 73 if (map->pin == pin)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 74 return map->function;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 75 map++;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 76 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 77 return (uint32_t)NC;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 78 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 79
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 80 uint32_t pinmap_function(PinName pin, const PinMap* map) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 81 uint32_t function = (uint32_t)NC;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 82
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 83 if (pin == (PinName)NC)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 84 return (uint32_t)NC;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 85 function = pinmap_find_function(pin, map);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 86 if ((uint32_t)NC == function) // no mapping available
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 87 error("pinmap not found for function");
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 88 return function;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 89 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 90