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 | {
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21 | if (pin == NC) {
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22 | return;
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23 | }
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24 |
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25 | while (map->pin != NC) {
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26 | if (map->pin == pin) {
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27 | pin_function(pin, map->function);
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28 |
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29 | pin_mode(pin, PullNone);
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30 | return;
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31 | }
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32 | map++;
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33 | }
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34 | MBED_ERROR1(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_PINMAP_INVALID), "could not pinout", pin);
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35 | }
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36 |
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37 | uint32_t pinmap_merge(uint32_t a, uint32_t b)
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38 | {
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39 | // both are the same (inc both NC)
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40 | if (a == b) {
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41 | return a;
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42 | }
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43 |
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44 | // one (or both) is not connected
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45 | if (a == (uint32_t)NC) {
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46 | return b;
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47 | }
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48 | if (b == (uint32_t)NC) {
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49 | return a;
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50 | }
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51 |
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52 | // mis-match error case
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53 | MBED_ERROR1(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_PINMAP_INVALID), "pinmap mis-match", a);
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54 | return (uint32_t)NC;
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55 | }
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56 |
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57 | uint32_t pinmap_find_peripheral(PinName pin, const PinMap *map)
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58 | {
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59 | while (map->pin != NC) {
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60 | if (map->pin == pin) {
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61 | return map->peripheral;
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62 | }
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63 | map++;
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64 | }
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65 | return (uint32_t)NC;
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66 | }
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67 |
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68 | uint32_t pinmap_peripheral(PinName pin, const PinMap *map)
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69 | {
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70 | uint32_t peripheral = (uint32_t)NC;
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71 |
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72 | if (pin == (PinName)NC) {
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73 | return (uint32_t)NC;
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74 | }
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75 | peripheral = pinmap_find_peripheral(pin, map);
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76 | if ((uint32_t)NC == peripheral) { // no mapping available
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77 | MBED_ERROR1(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_PINMAP_INVALID), "pinmap not found for peripheral", peripheral);
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78 | }
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79 | return peripheral;
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80 | }
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81 |
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82 | uint32_t pinmap_find_function(PinName pin, const PinMap *map)
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83 | {
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84 | while (map->pin != NC) {
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85 | if (map->pin == pin) {
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86 | return map->function;
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87 | }
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88 | map++;
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89 | }
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90 | return (uint32_t)NC;
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91 | }
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92 |
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93 | uint32_t pinmap_function(PinName pin, const PinMap *map)
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94 | {
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95 | uint32_t function = (uint32_t)NC;
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96 |
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97 | if (pin == (PinName)NC) {
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98 | return (uint32_t)NC;
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99 | }
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100 | function = pinmap_find_function(pin, map);
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101 | if ((uint32_t)NC == function) { // no mapping available
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102 | MBED_ERROR1(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_PINMAP_INVALID), "pinmap not found for function", function);
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103 | }
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104 | return function;
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105 | }
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