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targets/TARGET_Silicon_Labs/TARGET_EFM32/pinmap.c@150:02e0a0aed4ec, 2016-11-08 (annotated)
- Committer:
- <>
- Date:
- Tue Nov 08 17:45:16 2016 +0000
- Revision:
- 150:02e0a0aed4ec
- Parent:
- 149:156823d33999
This updates the lib to the mbed lib v129
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 144:ef7eb2e8f9f7 | 1 | /***************************************************************************//** |
<> | 144:ef7eb2e8f9f7 | 2 | * @file pinmap.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.h" |
<> | 144:ef7eb2e8f9f7 | 25 | #include "em_gpio.h" |
<> | 144:ef7eb2e8f9f7 | 26 | #include "em_cmu.h" |
<> | 144:ef7eb2e8f9f7 | 27 | #include "mbed_assert.h" |
<> | 144:ef7eb2e8f9f7 | 28 | |
<> | 144:ef7eb2e8f9f7 | 29 | static int gpio_clock_inited = 0; |
<> | 144:ef7eb2e8f9f7 | 30 | |
<> | 144:ef7eb2e8f9f7 | 31 | void pin_function(PinName pin, int function) |
<> | 144:ef7eb2e8f9f7 | 32 | { |
<> | 144:ef7eb2e8f9f7 | 33 | //Intentionally left empty. We have repurposed the function field. |
<> | 144:ef7eb2e8f9f7 | 34 | } |
<> | 144:ef7eb2e8f9f7 | 35 | |
<> | 144:ef7eb2e8f9f7 | 36 | void pin_mode(PinName pin, PinMode mode) |
<> | 144:ef7eb2e8f9f7 | 37 | { |
<> | 150:02e0a0aed4ec | 38 | MBED_ASSERT(pin != NC); |
<> | 144:ef7eb2e8f9f7 | 39 | |
<> | 144:ef7eb2e8f9f7 | 40 | /* Enable GPIO clock if not already done */ |
<> | 144:ef7eb2e8f9f7 | 41 | if (!gpio_clock_inited) { |
<> | 144:ef7eb2e8f9f7 | 42 | CMU_ClockEnable(cmuClock_GPIO, true); |
<> | 144:ef7eb2e8f9f7 | 43 | gpio_clock_inited = 1; |
<> | 144:ef7eb2e8f9f7 | 44 | } |
<> | 144:ef7eb2e8f9f7 | 45 | |
<> | 144:ef7eb2e8f9f7 | 46 | /* Pin and port index encoded in one uint32. |
<> | 144:ef7eb2e8f9f7 | 47 | * First four bits represent the pin number |
<> | 144:ef7eb2e8f9f7 | 48 | * The remaining bits represent the port number */ |
<> | 144:ef7eb2e8f9f7 | 49 | uint32_t pin_number = (uint32_t) pin; |
<> | 144:ef7eb2e8f9f7 | 50 | int pin_index = (pin_number & 0xF); |
<> | 144:ef7eb2e8f9f7 | 51 | int port_index = pin_number >> 4; |
<> | 144:ef7eb2e8f9f7 | 52 | |
<> | 144:ef7eb2e8f9f7 | 53 | GPIO_PinModeSet(port_index, pin_index, mode & 0xF, GPIO_PinOutGet(port_index, pin_index & 0xF)); |
<> | 144:ef7eb2e8f9f7 | 54 | } |
<> | 144:ef7eb2e8f9f7 | 55 | |
<> | 144:ef7eb2e8f9f7 | 56 | // TODO_LP get pin_mode to be able to store previous settings |