en 129 / mbed-src

[11U68]fix P0_11 to use GPIO

Fork of mbed-src by mbed official

targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/gpio_api.c@556:a217bc785985, 2015-06-03 (annotated)

Committer:
mbed_official
Date:
Wed Jun 03 08:30:08 2015 +0100
Revision:
556:a217bc785985
Parent:
548:1abac31e188e 
Synchronized with git revision dd1ab3a5e660410cfbfd2286c513ef820ed2d22f



Full URL: https://github.com/mbedmicro/mbed/commit/dd1ab3a5e660410cfbfd2286c513ef820ed2d22f/



Silicon Labs - Improvements in RAM footprint of 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 }
mbed_official 525:c320967f86b9 46
mbed_official 525:c320967f86b9 47 void gpio_pin_enable(gpio_t *obj, uint8_t enable)
mbed_official 525:c320967f86b9 48 {
mbed_official 525:c320967f86b9 49 if (enable) {
mbed_official 525:c320967f86b9 50 pin_mode(obj->pin, obj->mode);
mbed_official 525:c320967f86b9 51 } else {
mbed_official 525:c320967f86b9 52 pin_mode(obj->pin, Disabled); // TODO_LP return mode to default value
mbed_official 525:c320967f86b9 53 }
mbed_official 525:c320967f86b9 54 }
mbed_official 525:c320967f86b9 55
mbed_official 525:c320967f86b9 56 void gpio_mode(gpio_t *obj, PinMode mode)
mbed_official 525:c320967f86b9 57 {
mbed_official 525:c320967f86b9 58 obj->mode = mode; // Update object
mbed_official 525:c320967f86b9 59 pin_mode(obj->pin, mode); // Update register
mbed_official 548:1abac31e188e 60
mbed_official 534:6cdb58309977 61 //Handle pullup for input
mbed_official 534:6cdb58309977 62 if(mode == InputPullUp) {
mbed_official 534:6cdb58309977 63 //Set DOUT
mbed_official 556:a217bc785985 64 GPIO->P[(obj->pin >> 4) & 0xF].DOUTSET = 1 << (obj->pin & 0xF);
mbed_official 534:6cdb58309977 65 }
mbed_official 525:c320967f86b9 66 }
mbed_official 525:c320967f86b9 67
mbed_official 525:c320967f86b9 68 // Used by DigitalInOut to set correct mode when direction is set
mbed_official 525:c320967f86b9 69 void gpio_dir(gpio_t *obj, PinDirection direction)
mbed_official 525:c320967f86b9 70 {
mbed_official 525:c320967f86b9 71 obj->dir = direction;
mbed_official 525:c320967f86b9 72 switch (direction) {
mbed_official 525:c320967f86b9 73 case PIN_INPUT:
mbed_official 525:c320967f86b9 74 gpio_mode(obj, PullDefault);
mbed_official 525:c320967f86b9 75 break;
mbed_official 525:c320967f86b9 76 case PIN_OUTPUT:
mbed_official 525:c320967f86b9 77 gpio_mode(obj, PullNone);
mbed_official 525:c320967f86b9 78 break;
mbed_official 525:c320967f86b9 79 }
mbed_official 525:c320967f86b9 80 }
mbed_official 525:c320967f86b9 81