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targets/TARGET_Silicon_Labs/TARGET_EFM32/pinmap.c
- Committer:
- <>
- Date:
- 2016-11-08
- Revision:
- 150:02e0a0aed4ec
- Parent:
- 149:156823d33999
File content as of revision 150:02e0a0aed4ec:
/***************************************************************************//** * @file pinmap.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.h" #include "em_gpio.h" #include "em_cmu.h" #include "mbed_assert.h" static int gpio_clock_inited = 0; void pin_function(PinName pin, int function) { //Intentionally left empty. We have repurposed the function field. } void pin_mode(PinName pin, PinMode mode) { MBED_ASSERT(pin != NC); /* Enable GPIO clock if not already done */ if (!gpio_clock_inited) { CMU_ClockEnable(cmuClock_GPIO, true); gpio_clock_inited = 1; } /* Pin and port index encoded in one uint32. * First four bits represent the pin number * The remaining bits represent the port number */ uint32_t pin_number = (uint32_t) pin; int pin_index = (pin_number & 0xF); int port_index = pin_number >> 4; GPIO_PinModeSet(port_index, pin_index, mode & 0xF, GPIO_PinOutGet(port_index, pin_index & 0xF)); } // TODO_LP get pin_mode to be able to store previous settings