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 "hal/pinmap.h"
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17 | #include "platform/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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