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

TARGET_LPC1114/TOOLCHAIN_IAR/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 171:3a7713b1edbc 1 /* mbed Microcontroller Library
AnnaBridge 171:3a7713b1edbc 2 * Copyright (c) 2006-2013 ARM Limited
AnnaBridge 171:3a7713b1edbc 3 *
AnnaBridge 171:3a7713b1edbc 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 171:3a7713b1edbc 5 * you may not use this file except in compliance with the License.
AnnaBridge 171:3a7713b1edbc 6 * You may obtain a copy of the License at
AnnaBridge 171:3a7713b1edbc 7 *
AnnaBridge 171:3a7713b1edbc 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 171:3a7713b1edbc 9 *
AnnaBridge 171:3a7713b1edbc 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 171:3a7713b1edbc 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 171:3a7713b1edbc 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 171:3a7713b1edbc 13 * See the License for the specific language governing permissions and
AnnaBridge 171:3a7713b1edbc 14 * limitations under the License.
AnnaBridge 171:3a7713b1edbc 15 */
AnnaBridge 171:3a7713b1edbc 16 #ifndef MBED_GPIO_OBJECT_H
AnnaBridge 171:3a7713b1edbc 17 #define MBED_GPIO_OBJECT_H
AnnaBridge 171:3a7713b1edbc 18
AnnaBridge 171:3a7713b1edbc 19 #include "mbed_assert.h"
AnnaBridge 171:3a7713b1edbc 20
AnnaBridge 171:3a7713b1edbc 21 #ifdef __cplusplus
AnnaBridge 171:3a7713b1edbc 22 extern "C" {
AnnaBridge 171:3a7713b1edbc 23 #endif
AnnaBridge 171:3a7713b1edbc 24
AnnaBridge 171:3a7713b1edbc 25 typedef struct {
AnnaBridge 171:3a7713b1edbc 26 PinName pin;
AnnaBridge 171:3a7713b1edbc 27 __I uint32_t *reg_mask_read;
AnnaBridge 171:3a7713b1edbc 28 __IO uint32_t *reg_dir;
AnnaBridge 171:3a7713b1edbc 29 __IO uint32_t *reg_write;
AnnaBridge 171:3a7713b1edbc 30 } gpio_t;
AnnaBridge 171:3a7713b1edbc 31
AnnaBridge 171:3a7713b1edbc 32 static inline void gpio_write(gpio_t *obj, int value) {
AnnaBridge 171:3a7713b1edbc 33 MBED_ASSERT(obj->pin != (PinName)NC);
AnnaBridge 171:3a7713b1edbc 34 uint32_t pin_number = ((obj->pin & 0x0F00) >> 8);
AnnaBridge 171:3a7713b1edbc 35 if (value)
AnnaBridge 171:3a7713b1edbc 36 *obj->reg_write |= (1 << pin_number);
AnnaBridge 171:3a7713b1edbc 37 else
AnnaBridge 171:3a7713b1edbc 38 *obj->reg_write &= ~(1 << pin_number);
AnnaBridge 171:3a7713b1edbc 39 }
AnnaBridge 171:3a7713b1edbc 40
AnnaBridge 171:3a7713b1edbc 41 static inline int gpio_read(gpio_t *obj) {
AnnaBridge 171:3a7713b1edbc 42 MBED_ASSERT(obj->pin != (PinName)NC);
AnnaBridge 171:3a7713b1edbc 43 return ((*obj->reg_mask_read) ? 1 : 0);
AnnaBridge 171:3a7713b1edbc 44 }
AnnaBridge 171:3a7713b1edbc 45
AnnaBridge 171:3a7713b1edbc 46 static inline int gpio_is_connected(const gpio_t *obj) {
AnnaBridge 171:3a7713b1edbc 47 return obj->pin != (PinName)NC;
AnnaBridge 171:3a7713b1edbc 48 }
AnnaBridge 171:3a7713b1edbc 49
AnnaBridge 171:3a7713b1edbc 50 #ifdef __cplusplus
AnnaBridge 171:3a7713b1edbc 51 }
AnnaBridge 171:3a7713b1edbc 52 #endif
AnnaBridge 171:3a7713b1edbc 53
AnnaBridge 171:3a7713b1edbc 54 #endif