mbed library sources. Supersedes mbed-src.
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targets/TARGET_Silicon_Labs/TARGET_EFM32/pinmap_function.c@153:9398a535854b, 2016-12-22 (annotated)
- Committer:
- fwndz
- Date:
- Thu Dec 22 05:12:40 2016 +0000
- Revision:
- 153:9398a535854b
- Parent:
- 150:02e0a0aed4ec
device target maximize
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 144:ef7eb2e8f9f7 | 1 | /***************************************************************************//** |
<> | 144:ef7eb2e8f9f7 | 2 | * @file pinmap_function.c |
<> | 144:ef7eb2e8f9f7 | 3 | ******************************************************************************* |
<> | 144:ef7eb2e8f9f7 | 4 | * @section License |
<> | 144:ef7eb2e8f9f7 | 5 | * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> |
<> | 144:ef7eb2e8f9f7 | 6 | ******************************************************************************* |
<> | 144:ef7eb2e8f9f7 | 7 | * |
<> | 144:ef7eb2e8f9f7 | 8 | * SPDX-License-Identifier: Apache-2.0 |
<> | 144:ef7eb2e8f9f7 | 9 | * |
<> | 144:ef7eb2e8f9f7 | 10 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
<> | 144:ef7eb2e8f9f7 | 11 | * not use this file except in compliance with the License. |
<> | 144:ef7eb2e8f9f7 | 12 | * You may obtain a copy of the License at |
<> | 144:ef7eb2e8f9f7 | 13 | * |
<> | 144:ef7eb2e8f9f7 | 14 | * http://www.apache.org/licenses/LICENSE-2.0 |
<> | 144:ef7eb2e8f9f7 | 15 | * |
<> | 144:ef7eb2e8f9f7 | 16 | * Unless required by applicable law or agreed to in writing, software |
<> | 144:ef7eb2e8f9f7 | 17 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
<> | 144:ef7eb2e8f9f7 | 18 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
<> | 144:ef7eb2e8f9f7 | 19 | * See the License for the specific language governing permissions and |
<> | 144:ef7eb2e8f9f7 | 20 | * limitations under the License. |
<> | 144:ef7eb2e8f9f7 | 21 | * |
<> | 144:ef7eb2e8f9f7 | 22 | ******************************************************************************/ |
<> | 144:ef7eb2e8f9f7 | 23 | |
<> | 144:ef7eb2e8f9f7 | 24 | #include "pinmap_function.h" |
<> | 144:ef7eb2e8f9f7 | 25 | #include "PinNames.h" |
<> | 150:02e0a0aed4ec | 26 | #include "mbed_error.h" |
<> | 144:ef7eb2e8f9f7 | 27 | |
<> | 144:ef7eb2e8f9f7 | 28 | /** |
<> | 144:ef7eb2e8f9f7 | 29 | * Get the value of the function field for a pin in a pinmap |
<> | 144:ef7eb2e8f9f7 | 30 | * @param pin A pin |
<> | 144:ef7eb2e8f9f7 | 31 | * @param map A pinmap for a given peripheral |
<> | 144:ef7eb2e8f9f7 | 32 | * @return Content of function field in pinmap for the given pin |
<> | 144:ef7eb2e8f9f7 | 33 | */ |
<> | 144:ef7eb2e8f9f7 | 34 | uint32_t pinmap_get_function_field(PinName pin, const PinMap *map) |
<> | 144:ef7eb2e8f9f7 | 35 | { |
<> | 144:ef7eb2e8f9f7 | 36 | while (map->pin != NC) { |
<> | 144:ef7eb2e8f9f7 | 37 | if (map->pin == pin) { |
<> | 144:ef7eb2e8f9f7 | 38 | return map->function; |
<> | 144:ef7eb2e8f9f7 | 39 | } |
<> | 144:ef7eb2e8f9f7 | 40 | map++; |
<> | 144:ef7eb2e8f9f7 | 41 | } |
<> | 144:ef7eb2e8f9f7 | 42 | return (uint32_t) NC; |
<> | 144:ef7eb2e8f9f7 | 43 | } |
<> | 144:ef7eb2e8f9f7 | 44 | |
<> | 144:ef7eb2e8f9f7 | 45 | /** |
<> | 144:ef7eb2e8f9f7 | 46 | * Get the location a given peripheral is routed to from pin |
<> | 144:ef7eb2e8f9f7 | 47 | * This is stored in the function field of the pinmap |
<> | 144:ef7eb2e8f9f7 | 48 | * @param pin The pin |
<> | 144:ef7eb2e8f9f7 | 49 | * @param map Pinmap for the given peripheral |
<> | 144:ef7eb2e8f9f7 | 50 | * @return uint32 describing location (0, 1, 2, ...) |
<> | 144:ef7eb2e8f9f7 | 51 | */ |
<> | 144:ef7eb2e8f9f7 | 52 | uint32_t pin_location(PinName pin, const PinMap *map) |
<> | 144:ef7eb2e8f9f7 | 53 | { |
<> | 144:ef7eb2e8f9f7 | 54 | if (pin == (PinName) NC) { |
<> | 144:ef7eb2e8f9f7 | 55 | return (uint32_t) NC; |
<> | 144:ef7eb2e8f9f7 | 56 | } |
<> | 144:ef7eb2e8f9f7 | 57 | |
<> | 144:ef7eb2e8f9f7 | 58 | uint32_t location = pinmap_get_function_field(pin, map); |
<> | 144:ef7eb2e8f9f7 | 59 | if ((uint32_t) NC == location) { // no mapping available |
<> | 144:ef7eb2e8f9f7 | 60 | error("location not found for pin"); |
<> | 144:ef7eb2e8f9f7 | 61 | } |
<> | 144:ef7eb2e8f9f7 | 62 | return location; |
<> | 144:ef7eb2e8f9f7 | 63 | } |