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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c@548:1abac31e188e, 2015-05-22 (annotated)

Committer:
mbed_official
Date:
Fri May 22 10:45:46 2015 +0100
Revision:
548:1abac31e188e
Parent:
534:6cdb58309977
Child:
556:a217bc785985
Synchronized with git revision 88d158e43b54f97c5e94da305ea9a096889cc81b



Full URL: https://github.com/mbedmicro/mbed/commit/88d158e43b54f97c5e94da305ea9a096889cc81b/



Silicon Labs - Cosmetic: apply mbed coding style to HAL

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 525:c320967f86b9 1 /* mbed Microcontroller Library
mbed_official 525:c320967f86b9 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 525:c320967f86b9 3 *
mbed_official 525:c320967f86b9 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 525:c320967f86b9 5 * you may not use this file except in compliance with the License.
mbed_official 525:c320967f86b9 6 * You may obtain a copy of the License at
mbed_official 525:c320967f86b9 7 *
mbed_official 525:c320967f86b9 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 525:c320967f86b9 9 *
mbed_official 525:c320967f86b9 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 525:c320967f86b9 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 525:c320967f86b9 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 525:c320967f86b9 13 * See the License for the specific language governing permissions and
mbed_official 525:c320967f86b9 14 * limitations under the License.
mbed_official 525:c320967f86b9 15 */
mbed_official 525:c320967f86b9 16 #include "gpio_api.h"
mbed_official 525:c320967f86b9 17 #include "pinmap.h"
mbed_official 525:c320967f86b9 18 #include "em_cmu.h"
mbed_official 525:c320967f86b9 19 #include "mbed_assert.h"
mbed_official 526:7c4bdfe6a168 20 #include "sleepmodes.h"
mbed_official 525:c320967f86b9 21
mbed_official 525:c320967f86b9 22 uint8_t gpio_get_index(gpio_t *obj)
mbed_official 525:c320967f86b9 23 {
mbed_official 525:c320967f86b9 24 return 0;
mbed_official 525:c320967f86b9 25 }
mbed_official 525:c320967f86b9 26
mbed_official 525:c320967f86b9 27 /*
mbed_official 525:c320967f86b9 28 * @return the GPIO port mask for this pin
mbed_official 525:c320967f86b9 29 * Pin and port index encoded in one uint32.
mbed_official 525:c320967f86b9 30 * First four bits represent the pin number
mbed_official 525:c320967f86b9 31 * The remaining bits represent the pin mode
mbed_official 525:c320967f86b9 32 */
mbed_official 525:c320967f86b9 33 uint32_t gpio_set(PinName pin)
mbed_official 525:c320967f86b9 34 {
mbed_official 525:c320967f86b9 35 return 1 << ((uint32_t) pin & 0xF);
mbed_official 525:c320967f86b9 36 }
mbed_official 525:c320967f86b9 37
mbed_official 525:c320967f86b9 38 void gpio_init(gpio_t *obj, PinName pin)
mbed_official 525:c320967f86b9 39 {
mbed_official 525:c320967f86b9 40 MBED_ASSERT(pin != NC);
mbed_official 525:c320967f86b9 41
mbed_official 525:c320967f86b9 42 CMU_ClockEnable(cmuClock_HFPER, true);
mbed_official 525:c320967f86b9 43 CMU_ClockEnable(cmuClock_GPIO, true);
mbed_official 525:c320967f86b9 44 obj->pin = pin;
mbed_official 525:c320967f86b9 45 obj->mask = gpio_set(pin);
mbed_official 525:c320967f86b9 46 obj->port = pin >> 4;
mbed_official 525:c320967f86b9 47 }
mbed_official 525:c320967f86b9 48
mbed_official 525:c320967f86b9 49 void gpio_pin_enable(gpio_t *obj, uint8_t enable)
mbed_official 525:c320967f86b9 50 {
mbed_official 525:c320967f86b9 51 if (enable) {
mbed_official 525:c320967f86b9 52 pin_mode(obj->pin, obj->mode);
mbed_official 525:c320967f86b9 53 } else {
mbed_official 525:c320967f86b9 54 pin_mode(obj->pin, Disabled); // TODO_LP return mode to default value
mbed_official 525:c320967f86b9 55 }
mbed_official 525:c320967f86b9 56 }
mbed_official 525:c320967f86b9 57
mbed_official 525:c320967f86b9 58 void gpio_mode(gpio_t *obj, PinMode mode)
mbed_official 525:c320967f86b9 59 {
mbed_official 525:c320967f86b9 60 obj->mode = mode; // Update object
mbed_official 525:c320967f86b9 61 pin_mode(obj->pin, mode); // Update register
mbed_official 548:1abac31e188e 62
mbed_official 534:6cdb58309977 63 //Handle pullup for input
mbed_official 534:6cdb58309977 64 if(mode == InputPullUp) {
mbed_official 534:6cdb58309977 65 //Set DOUT
mbed_official 534:6cdb58309977 66 GPIO->P[obj->port & 0xF].DOUTSET = 1 << (obj->pin & 0xF);
mbed_official 534:6cdb58309977 67 }
mbed_official 525:c320967f86b9 68 }
mbed_official 525:c320967f86b9 69
mbed_official 525:c320967f86b9 70 // Used by DigitalInOut to set correct mode when direction is set
mbed_official 525:c320967f86b9 71 void gpio_dir(gpio_t *obj, PinDirection direction)
mbed_official 525:c320967f86b9 72 {
mbed_official 525:c320967f86b9 73 obj->dir = direction;
mbed_official 525:c320967f86b9 74 switch (direction) {
mbed_official 525:c320967f86b9 75 case PIN_INPUT:
mbed_official 525:c320967f86b9 76 gpio_mode(obj, PullDefault);
mbed_official 525:c320967f86b9 77 break;
mbed_official 525:c320967f86b9 78 case PIN_OUTPUT:
mbed_official 525:c320967f86b9 79 gpio_mode(obj, PullNone);
mbed_official 525:c320967f86b9 80 break;
mbed_official 525:c320967f86b9 81 }
mbed_official 525:c320967f86b9 82 }
mbed_official 525:c320967f86b9 83