mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_Silicon_Labs/TARGET_EFM32/pinmap_function.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
150:02e0a0aed4ec 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew 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 }