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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_NXP/TARGET_LPC176X/gpio_api.c@13:0645d8841f51, 2013-08-05 (annotated)

Committer:
bogdanm
Date:
Mon Aug 05 14:12:34 2013 +0300
Revision:
13:0645d8841f51
Parent:
vendor/NXP/LPC1768/hal/gpio_api.c@10:3bc89ef62ce7
Child:
113:65a335a675de
Update mbed sources to revision 64

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library
emilmont 10:3bc89ef62ce7 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 10:3bc89ef62ce7 5 * you may not use this file except in compliance with the License.
emilmont 10:3bc89ef62ce7 6 * You may obtain a copy of the License at
emilmont 10:3bc89ef62ce7 7 *
emilmont 10:3bc89ef62ce7 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 10:3bc89ef62ce7 9 *
emilmont 10:3bc89ef62ce7 10 * Unless required by applicable law or agreed to in writing, software
emilmont 10:3bc89ef62ce7 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 10:3bc89ef62ce7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 10:3bc89ef62ce7 13 * See the License for the specific language governing permissions and
emilmont 10:3bc89ef62ce7 14 * limitations under the License.
emilmont 10:3bc89ef62ce7 15 */
emilmont 10:3bc89ef62ce7 16 #include "gpio_api.h"
emilmont 10:3bc89ef62ce7 17 #include "pinmap.h"
emilmont 10:3bc89ef62ce7 18
emilmont 10:3bc89ef62ce7 19 uint32_t gpio_set(PinName pin) {
emilmont 10:3bc89ef62ce7 20 pin_function(pin, 0);
emilmont 10:3bc89ef62ce7 21 return (1 << ((int)pin & 0x1F));
emilmont 10:3bc89ef62ce7 22 }
emilmont 10:3bc89ef62ce7 23
emilmont 10:3bc89ef62ce7 24 void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) {
emilmont 10:3bc89ef62ce7 25 if(pin == NC) return;
emilmont 10:3bc89ef62ce7 26
emilmont 10:3bc89ef62ce7 27 obj->pin = pin;
emilmont 10:3bc89ef62ce7 28 obj->mask = gpio_set(pin);
emilmont 10:3bc89ef62ce7 29
emilmont 10:3bc89ef62ce7 30 LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *) ((int)pin & ~0x1F);
emilmont 10:3bc89ef62ce7 31 obj->reg_set = &port_reg->FIOSET;
emilmont 10:3bc89ef62ce7 32 obj->reg_clr = &port_reg->FIOCLR;
emilmont 10:3bc89ef62ce7 33 obj->reg_in = &port_reg->FIOPIN;
emilmont 10:3bc89ef62ce7 34 obj->reg_dir = &port_reg->FIODIR;
emilmont 10:3bc89ef62ce7 35
emilmont 10:3bc89ef62ce7 36 gpio_dir(obj, direction);
emilmont 10:3bc89ef62ce7 37 switch (direction) {
emilmont 10:3bc89ef62ce7 38 case PIN_OUTPUT: pin_mode(pin, PullNone); break;
emilmont 10:3bc89ef62ce7 39 case PIN_INPUT : pin_mode(pin, PullDown); break;
emilmont 10:3bc89ef62ce7 40 }
emilmont 10:3bc89ef62ce7 41 }
emilmont 10:3bc89ef62ce7 42
emilmont 10:3bc89ef62ce7 43 void gpio_mode(gpio_t *obj, PinMode mode) {
emilmont 10:3bc89ef62ce7 44 pin_mode(obj->pin, mode);
emilmont 10:3bc89ef62ce7 45 }
emilmont 10:3bc89ef62ce7 46
emilmont 10:3bc89ef62ce7 47 void gpio_dir(gpio_t *obj, PinDirection direction) {
emilmont 10:3bc89ef62ce7 48 switch (direction) {
emilmont 10:3bc89ef62ce7 49 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
emilmont 10:3bc89ef62ce7 50 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
emilmont 10:3bc89ef62ce7 51 }
emilmont 10:3bc89ef62ce7 52 }