Fawwaz Nadzmy / mbed-src

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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