Umar Naeem / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by Umar Naeem

targets/TARGET_NXP/TARGET_LPC2460/gpio_object.h@165:2dd56e6daeec, 2017-05-23 (annotated)

Committer:
ranaumarnaeem
Date:
Tue May 23 12:54:50 2017 +0000
Revision:
165:2dd56e6daeec
Parent:
149:156823d33999 
jhjg

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2015 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #ifndef MBED_GPIO_OBJECT_H
<> 144:ef7eb2e8f9f7 17 #define MBED_GPIO_OBJECT_H
<> 144:ef7eb2e8f9f7 18
<> 144:ef7eb2e8f9f7 19 #include "mbed_assert.h"
<> 144:ef7eb2e8f9f7 20
<> 144:ef7eb2e8f9f7 21 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 22 extern "C" {
<> 144:ef7eb2e8f9f7 23 #endif
<> 144:ef7eb2e8f9f7 24
<> 144:ef7eb2e8f9f7 25 typedef struct {
<> 144:ef7eb2e8f9f7 26 PinName pin;
<> 144:ef7eb2e8f9f7 27 uint32_t mask;
<> 144:ef7eb2e8f9f7 28
<> 144:ef7eb2e8f9f7 29 __IO uint32_t *reg_dir;
<> 144:ef7eb2e8f9f7 30 __IO uint32_t *reg_mask;
<> 144:ef7eb2e8f9f7 31 __IO uint32_t *reg_set;
<> 144:ef7eb2e8f9f7 32 __IO uint32_t *reg_clr;
<> 144:ef7eb2e8f9f7 33 __I uint32_t *reg_in;
<> 144:ef7eb2e8f9f7 34 } gpio_t;
<> 144:ef7eb2e8f9f7 35
<> 144:ef7eb2e8f9f7 36 static inline void gpio_write(gpio_t *obj, int value) {
<> 144:ef7eb2e8f9f7 37 MBED_ASSERT(obj->pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 38 *obj->reg_mask &= ~obj->mask;
<> 144:ef7eb2e8f9f7 39 if (value)
<> 144:ef7eb2e8f9f7 40 *obj->reg_set = obj->mask;
<> 144:ef7eb2e8f9f7 41 else
<> 144:ef7eb2e8f9f7 42 *obj->reg_clr = obj->mask;
<> 144:ef7eb2e8f9f7 43 }
<> 144:ef7eb2e8f9f7 44
<> 144:ef7eb2e8f9f7 45 static inline int gpio_read(gpio_t *obj) {
<> 144:ef7eb2e8f9f7 46 MBED_ASSERT(obj->pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 47 *obj->reg_mask &= ~obj->mask;
<> 144:ef7eb2e8f9f7 48 return ((*obj->reg_in & obj->mask) ? 1 : 0);
<> 144:ef7eb2e8f9f7 49 }
<> 144:ef7eb2e8f9f7 50
<> 144:ef7eb2e8f9f7 51 static inline int gpio_is_connected(const gpio_t *obj) {
<> 144:ef7eb2e8f9f7 52 return obj->pin != (PinName)NC;
<> 144:ef7eb2e8f9f7 53 }
<> 144:ef7eb2e8f9f7 54
<> 144:ef7eb2e8f9f7 55 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 56 }
<> 144:ef7eb2e8f9f7 57 #endif
<> 144:ef7eb2e8f9f7 58
<> 144:ef7eb2e8f9f7 59 #endif