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