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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

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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_NORDIC/TARGET_NRF51822/gpio_api.c@85:e1a8e879a6a9, 2014-02-07 (annotated)

Committer:
mbed_official
Date:
Fri Feb 07 18:00:11 2014 +0000
Revision:
85:e1a8e879a6a9
Child:
113:65a335a675de
Synchronized with git revision 4b2b368a6a3b1f0fd33d99917981c67436c4aebe



Full URL: https://github.com/mbedmicro/mbed/commit/4b2b368a6a3b1f0fd33d99917981c67436c4aebe/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 85:e1a8e879a6a9 1 /* mbed Microcontroller Library
mbed_official 85:e1a8e879a6a9 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 85:e1a8e879a6a9 3 *
mbed_official 85:e1a8e879a6a9 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 85:e1a8e879a6a9 5 * you may not use this file except in compliance with the License.
mbed_official 85:e1a8e879a6a9 6 * You may obtain a copy of the License at
mbed_official 85:e1a8e879a6a9 7 *
mbed_official 85:e1a8e879a6a9 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 85:e1a8e879a6a9 9 *
mbed_official 85:e1a8e879a6a9 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 85:e1a8e879a6a9 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 85:e1a8e879a6a9 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 85:e1a8e879a6a9 13 * See the License for the specific language governing permissions and
mbed_official 85:e1a8e879a6a9 14 * limitations under the License.
mbed_official 85:e1a8e879a6a9 15 */
mbed_official 85:e1a8e879a6a9 16 #include "gpio_api.h"
mbed_official 85:e1a8e879a6a9 17 #include "pinmap.h"
mbed_official 85:e1a8e879a6a9 18
mbed_official 85:e1a8e879a6a9 19 void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) {
mbed_official 85:e1a8e879a6a9 20 if(pin == NC) return;
mbed_official 85:e1a8e879a6a9 21
mbed_official 85:e1a8e879a6a9 22 obj->pin = pin;
mbed_official 85:e1a8e879a6a9 23 obj->mask = (1ul<<pin);
mbed_official 85:e1a8e879a6a9 24
mbed_official 85:e1a8e879a6a9 25 obj->reg_set = &NRF_GPIO->OUTSET;
mbed_official 85:e1a8e879a6a9 26 obj->reg_clr = &NRF_GPIO->OUTCLR;
mbed_official 85:e1a8e879a6a9 27 obj->reg_in = &NRF_GPIO->IN;
mbed_official 85:e1a8e879a6a9 28 obj->reg_dir = &NRF_GPIO->DIR;
mbed_official 85:e1a8e879a6a9 29
mbed_official 85:e1a8e879a6a9 30 gpio_dir(obj, direction);
mbed_official 85:e1a8e879a6a9 31 switch (direction) {
mbed_official 85:e1a8e879a6a9 32 case PIN_OUTPUT: pin_mode(pin, PullNone); break;
mbed_official 85:e1a8e879a6a9 33 case PIN_INPUT : pin_mode(pin, PullUp); break;
mbed_official 85:e1a8e879a6a9 34 }
mbed_official 85:e1a8e879a6a9 35 }
mbed_official 85:e1a8e879a6a9 36
mbed_official 85:e1a8e879a6a9 37 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 85:e1a8e879a6a9 38 pin_mode(obj->pin, mode);
mbed_official 85:e1a8e879a6a9 39 }
mbed_official 85:e1a8e879a6a9 40
mbed_official 85:e1a8e879a6a9 41 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 85:e1a8e879a6a9 42 switch (direction) {
mbed_official 85:e1a8e879a6a9 43 case PIN_INPUT :
mbed_official 85:e1a8e879a6a9 44 NRF_GPIO->PIN_CNF[obj->pin] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
mbed_official 85:e1a8e879a6a9 45 | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
mbed_official 85:e1a8e879a6a9 46 | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos)
mbed_official 85:e1a8e879a6a9 47 | (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
mbed_official 85:e1a8e879a6a9 48 break;
mbed_official 85:e1a8e879a6a9 49 case PIN_OUTPUT:
mbed_official 85:e1a8e879a6a9 50 NRF_GPIO->PIN_CNF[obj->pin] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
mbed_official 85:e1a8e879a6a9 51 | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
mbed_official 85:e1a8e879a6a9 52 | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos)
mbed_official 85:e1a8e879a6a9 53 | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos)
mbed_official 85:e1a8e879a6a9 54 | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
mbed_official 85:e1a8e879a6a9 55 break;
mbed_official 85:e1a8e879a6a9 56 }
mbed_official 85:e1a8e879a6a9 57 }
mbed_official 85:e1a8e879a6a9 58