96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2015-01-20 Bernard the first version
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* 2017-10-20 ZYH add mode open drain and input pull down
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*/
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#ifndef PIN_H__
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#define PIN_H__
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#include <rtthread.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* pin device and operations for RT-Thread */
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struct rt_device_pin
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{
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struct rt_device parent;
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const struct rt_pin_ops *ops;
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};
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#define PIN_NONE (-1)
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#define PIN_LOW 0x00
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#define PIN_HIGH 0x01
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#define PIN_MODE_OUTPUT 0x00
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#define PIN_MODE_INPUT 0x01
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#define PIN_MODE_INPUT_PULLUP 0x02
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#define PIN_MODE_INPUT_PULLDOWN 0x03
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#define PIN_MODE_OUTPUT_OD 0x04
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#define PIN_IRQ_MODE_RISING 0x00
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#define PIN_IRQ_MODE_FALLING 0x01
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#define PIN_IRQ_MODE_RISING_FALLING 0x02
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#define PIN_IRQ_MODE_HIGH_LEVEL 0x03
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#define PIN_IRQ_MODE_LOW_LEVEL 0x04
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#define PIN_IRQ_DISABLE 0x00
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#define PIN_IRQ_ENABLE 0x01
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#define PIN_IRQ_PIN_NONE PIN_NONE
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struct rt_device_pin_mode
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{
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rt_base_t pin;
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rt_uint8_t mode; /* e.g. PIN_MODE_OUTPUT */
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};
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struct rt_device_pin_value
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{
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rt_base_t pin;
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rt_uint8_t value; /* PIN_LOW or PIN_HIGH */
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};
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struct rt_pin_irq_hdr
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{
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rt_base_t pin;
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rt_uint8_t mode; /* e.g. PIN_IRQ_MODE_RISING */
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void (*hdr)(void *args);
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void *args;
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};
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struct rt_pin_ops
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{
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void (*pin_mode)(struct rt_device *device, rt_base_t pin, rt_uint8_t mode);
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void (*pin_write)(struct rt_device *device, rt_base_t pin, rt_uint8_t value);
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rt_int8_t (*pin_read)(struct rt_device *device, rt_base_t pin);
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rt_err_t (*pin_attach_irq)(struct rt_device *device, rt_base_t pin,
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rt_uint8_t mode, void (*hdr)(void *args), void *args);
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rt_err_t (*pin_detach_irq)(struct rt_device *device, rt_base_t pin);
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rt_err_t (*pin_irq_enable)(struct rt_device *device, rt_base_t pin, rt_uint8_t enabled);
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rt_base_t (*pin_get)(const char *name);
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};
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int rt_device_pin_register(const char *name, const struct rt_pin_ops *ops, void *user_data);
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void rt_pin_mode(rt_base_t pin, rt_uint8_t mode);
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void rt_pin_write(rt_base_t pin, rt_uint8_t value);
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rt_int8_t rt_pin_read(rt_base_t pin);
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rt_base_t rt_pin_get(const char *name);
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rt_err_t rt_pin_attach_irq(rt_base_t pin, rt_uint8_t mode,
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void (*hdr)(void *args), void *args);
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rt_err_t rt_pin_detach_irq(rt_base_t pin);
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rt_err_t rt_pin_irq_enable(rt_base_t pin, rt_uint8_t enabled);
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#ifdef __cplusplus
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}
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#endif
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#endif
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