[270] | 1 | /* mbed Microcontroller Library
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| 2 | * Copyright (c) 2006-2013 ARM Limited
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | #include "pinmap.h"
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| 17 | #include "mbed_error.h"
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| 18 |
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| 19 | void pinmap_pinout(PinName pin, const PinMap *map) {
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| 20 | if (pin == NC)
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| 21 | return;
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| 22 |
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| 23 | while (map->pin != NC) {
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| 24 | if (map->pin == pin) {
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| 25 | pin_function(pin, map->function);
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| 26 |
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| 27 | pin_mode(pin, PullNone);
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| 28 | return;
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| 29 | }
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| 30 | map++;
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| 31 | }
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| 32 | error("could not pinout");
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| 33 | }
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| 34 |
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| 35 | uint32_t pinmap_merge(uint32_t a, uint32_t b) {
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| 36 | // both are the same (inc both NC)
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| 37 | if (a == b)
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| 38 | return a;
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| 39 |
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| 40 | // one (or both) is not connected
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| 41 | if (a == (uint32_t)NC)
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| 42 | return b;
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| 43 | if (b == (uint32_t)NC)
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| 44 | return a;
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| 45 |
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| 46 | // mis-match error case
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| 47 | error("pinmap mis-match");
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| 48 | return (uint32_t)NC;
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| 49 | }
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| 50 |
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| 51 | uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) {
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| 52 | while (map->pin != NC) {
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| 53 | if (map->pin == pin)
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| 54 | return map->peripheral;
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| 55 | map++;
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| 56 | }
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| 57 | return (uint32_t)NC;
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| 58 | }
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| 59 |
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| 60 | uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
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| 61 | uint32_t peripheral = (uint32_t)NC;
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| 62 |
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| 63 | if (pin == (PinName)NC)
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| 64 | return (uint32_t)NC;
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| 65 | peripheral = pinmap_find_peripheral(pin, map);
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| 66 | if ((uint32_t)NC == peripheral) // no mapping available
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| 67 | error("pinmap not found for peripheral");
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| 68 | return peripheral;
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| 69 | }
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| 70 |
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| 71 | uint32_t pinmap_find_function(PinName pin, const PinMap* map) {
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| 72 | while (map->pin != NC) {
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| 73 | if (map->pin == pin)
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| 74 | return map->function;
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| 75 | map++;
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| 76 | }
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| 77 | return (uint32_t)NC;
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| 78 | }
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| 79 |
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| 80 | uint32_t pinmap_function(PinName pin, const PinMap* map) {
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| 81 | uint32_t function = (uint32_t)NC;
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| 82 |
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| 83 | if (pin == (PinName)NC)
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| 84 | return (uint32_t)NC;
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| 85 | function = pinmap_find_function(pin, map);
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| 86 | if ((uint32_t)NC == function) // no mapping available
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| 87 | error("pinmap not found for function");
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| 88 | return function;
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| 89 | }
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