/**************************************************************************** * * Copyright 2020 Samsung Electronics All Rights Reserved. * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, * either express or implied. See the License for the specific * language governing permissions and limitations under the License. * ****************************************************************************/ #ifndef MBED_GPIO_OBJECT_H #define MBED_GPIO_OBJECT_H #include "cmsis.h" #include "PortNames.h" #include "PeripheralNames.h" #include "PinNames.h" #ifdef __cplusplus extern "C" { #endif typedef struct { PinName pin; unsigned int mask; __IO unsigned int *reg_dir; __IO unsigned int *reg_out; __I unsigned int *reg_in; } gpio_t; static inline void gpio_write(gpio_t *obj, int value) { if (obj->reg_out == (void *)0) { return; } if (value == 1) { *(obj->reg_out) |= (obj->mask); } else if (value == 0) { *(obj->reg_out) &= ~(obj->mask); } } static inline int gpio_read(gpio_t *obj) { if (obj->reg_out == (void *)0) { return 0; } if (*(obj->reg_dir) & obj->mask) { return ((*(obj->reg_in) & obj->mask) ? 1 : 0); } else { return ((*(obj->reg_out) & obj->mask) ? 1 : 0); } } #ifdef __cplusplus } #endif #endif