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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