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gpio_object.h
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2013 ARM Limited 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 #ifndef MBED_GPIO_OBJECT_H 00017 #define MBED_GPIO_OBJECT_H 00018 00019 #ifdef __cplusplus 00020 extern "C" { 00021 #endif 00022 00023 typedef struct { 00024 PinName pin; 00025 uint32_t mask; 00026 00027 __IO uint32_t *reg_dir; 00028 __IO uint32_t *reg_set; 00029 __IO uint32_t *reg_clr; 00030 __I uint32_t *reg_in; 00031 } gpio_t; 00032 00033 static inline void gpio_write(gpio_t *obj, int value) { 00034 if (value) 00035 *obj->reg_set = obj->mask; 00036 else 00037 *obj->reg_clr = obj->mask; 00038 } 00039 00040 static inline int gpio_read(gpio_t *obj) { 00041 return ((*obj->reg_in & obj->mask) ? 1 : 0); 00042 } 00043 00044 #ifdef __cplusplus 00045 } 00046 #endif 00047 00048 #endif
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