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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

TARGET_LPC1768/TOOLCHAIN_ARM_STD/gpio_object.h@172:65be27845400, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 20:53:29 2019 +0000
Revision:
172:65be27845400
Parent:
171:3a7713b1edbc 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 156:ff21514d8981 1 /* mbed Microcontroller Library
AnnaBridge 156:ff21514d8981 2 * Copyright (c) 2006-2013 ARM Limited
AnnaBridge 156:ff21514d8981 3 *
AnnaBridge 156:ff21514d8981 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 156:ff21514d8981 5 * you may not use this file except in compliance with the License.
AnnaBridge 156:ff21514d8981 6 * You may obtain a copy of the License at
AnnaBridge 156:ff21514d8981 7 *
AnnaBridge 156:ff21514d8981 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 156:ff21514d8981 9 *
AnnaBridge 156:ff21514d8981 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 156:ff21514d8981 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 156:ff21514d8981 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 156:ff21514d8981 13 * See the License for the specific language governing permissions and
AnnaBridge 156:ff21514d8981 14 * limitations under the License.
AnnaBridge 156:ff21514d8981 15 */
AnnaBridge 156:ff21514d8981 16 #ifndef MBED_GPIO_OBJECT_H
AnnaBridge 156:ff21514d8981 17 #define MBED_GPIO_OBJECT_H
AnnaBridge 156:ff21514d8981 18
AnnaBridge 156:ff21514d8981 19 #include "mbed_assert.h"
AnnaBridge 156:ff21514d8981 20
AnnaBridge 156:ff21514d8981 21 #ifdef __cplusplus
AnnaBridge 156:ff21514d8981 22 extern "C" {
AnnaBridge 156:ff21514d8981 23 #endif
AnnaBridge 156:ff21514d8981 24
AnnaBridge 156:ff21514d8981 25 typedef struct {
AnnaBridge 156:ff21514d8981 26 PinName pin;
AnnaBridge 156:ff21514d8981 27 uint32_t mask;
AnnaBridge 156:ff21514d8981 28
AnnaBridge 156:ff21514d8981 29 __IO uint32_t *reg_dir;
AnnaBridge 156:ff21514d8981 30 __IO uint32_t *reg_set;
AnnaBridge 156:ff21514d8981 31 __IO uint32_t *reg_clr;
AnnaBridge 156:ff21514d8981 32 __I uint32_t *reg_in;
AnnaBridge 156:ff21514d8981 33 } gpio_t;
AnnaBridge 156:ff21514d8981 34
AnnaBridge 156:ff21514d8981 35 static inline void gpio_write(gpio_t *obj, int value) {
AnnaBridge 156:ff21514d8981 36 MBED_ASSERT(obj->pin != (PinName)NC);
AnnaBridge 156:ff21514d8981 37 if (value)
AnnaBridge 156:ff21514d8981 38 *obj->reg_set = obj->mask;
AnnaBridge 156:ff21514d8981 39 else
AnnaBridge 156:ff21514d8981 40 *obj->reg_clr = obj->mask;
AnnaBridge 156:ff21514d8981 41 }
AnnaBridge 156:ff21514d8981 42
AnnaBridge 156:ff21514d8981 43 static inline int gpio_read(gpio_t *obj) {
AnnaBridge 156:ff21514d8981 44 MBED_ASSERT(obj->pin != (PinName)NC);
AnnaBridge 156:ff21514d8981 45 return ((*obj->reg_in & obj->mask) ? 1 : 0);
AnnaBridge 156:ff21514d8981 46 }
AnnaBridge 156:ff21514d8981 47
AnnaBridge 156:ff21514d8981 48 static inline int gpio_is_connected(const gpio_t *obj) {
AnnaBridge 156:ff21514d8981 49 return obj->pin != (PinName)NC;
AnnaBridge 156:ff21514d8981 50 }
AnnaBridge 156:ff21514d8981 51
AnnaBridge 156:ff21514d8981 52 #ifdef __cplusplus
AnnaBridge 156:ff21514d8981 53 }
AnnaBridge 156:ff21514d8981 54 #endif
AnnaBridge 156:ff21514d8981 55
AnnaBridge 156:ff21514d8981 56 #endif