mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
Diff: targets/TARGET_Silicon_Labs/TARGET_EFM32/pinmap_function.c
- Revision:
- 149:156823d33999
- Parent:
- 144:ef7eb2e8f9f7
- Child:
- 150:02e0a0aed4ec
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/TARGET_Silicon_Labs/TARGET_EFM32/pinmap_function.c Fri Oct 28 11:17:30 2016 +0100 @@ -0,0 +1,63 @@ +/***************************************************************************//** + * @file pinmap_function.c + ******************************************************************************* + * @section License + * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> + ******************************************************************************* + * + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ******************************************************************************/ + +#include "pinmap_function.h" +#include "PinNames.h" +#include "error.h" + +/** + * Get the value of the function field for a pin in a pinmap + * @param pin A pin + * @param map A pinmap for a given peripheral + * @return Content of function field in pinmap for the given pin + */ +uint32_t pinmap_get_function_field(PinName pin, const PinMap *map) +{ + while (map->pin != NC) { + if (map->pin == pin) { + return map->function; + } + map++; + } + return (uint32_t) NC; +} + +/** + * Get the location a given peripheral is routed to from pin + * This is stored in the function field of the pinmap + * @param pin The pin + * @param map Pinmap for the given peripheral + * @return uint32 describing location (0, 1, 2, ...) + */ +uint32_t pin_location(PinName pin, const PinMap *map) +{ + if (pin == (PinName) NC) { + return (uint32_t) NC; + } + + uint32_t location = pinmap_get_function_field(pin, map); + if ((uint32_t) NC == location) { // no mapping available + error("location not found for pin"); + } + return location; +}