mirror of https://github.com/ARMmbed/mbed-os.git
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2018 ARM Limited
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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, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __MBED_GPIO_OBJECTS_H__
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#define __MBED_GPIO_OBJECTS_H__
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/*
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* GPIO device number, there are 16 pins per GPIO
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* equivalent: pin / 16
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*/
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#define GPIO_DEV_NUMBER(pin) ((pin) >> 4)
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/*
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* Pin number of this pin inside its GPIO
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* equivalent: pin % 16
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*/
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#define GPIO_PIN_NUMBER(pin) ((pin) & 0xF)
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/* Number of the GPIO device */
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#define GPIO0_NUMBER 0
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#define GPIO1_NUMBER 1
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#define GPIO2_NUMBER 2
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#define GPIO3_NUMBER 3
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/* Base EXP pin number for the corresponding GPIO */
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#define EXP_PIN_BASE0 EXP0
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#define EXP_PIN_BASE1 EXP16
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#define EXP_PIN_BASE2 EXP32
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#define EXP_PIN_BASE3 EXP48
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#define GPIO_DEVICES 4
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#define PINS_PER_GPIO 16
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/* Pins 4 to 15 of GPIO3 are not used */
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#define PINS_NOT_USED 12
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#define PINS_NUMBER (GPIO_DEVICES * PINS_PER_GPIO - PINS_NOT_USED)
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/* GPIO3 port only uses first 4 pins */
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#define GPIO3_PIN_NUMBER 4
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/* When doing a port access, the pin number argument is useless */
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#define ARG_NOT_USED 0
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#endif /* __MBED_GPIO_OBJECTS_H__ */
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