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- /*
- * File : pin.h
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2015, RT-Thread Development Team
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Change Logs:
- * Date Author Notes
- * 2015-01-20 Bernard the first version
- * 2017-10-20 ZYH add mode open drain and input pull down
- */
- #ifndef PIN_H__
- #define PIN_H__
- #include <rtthread.h>
- #include <rtdevice.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- /* pin device and operations for RT-Thread */
- struct rt_device_pin
- {
- struct rt_device parent;
- const struct rt_pin_ops *ops;
- };
- #define PIN_LOW 0x00
- #define PIN_HIGH 0x01
- #define PIN_MODE_OUTPUT 0x00
- #define PIN_MODE_INPUT 0x01
- #define PIN_MODE_INPUT_PULLUP 0x02
- #define PIN_MODE_INPUT_PULLDOWN 0x03
- #define PIN_MODE_OUTPUT_OD 0x04
- #define PIN_IRQ_MODE_RISING 0x00
- #define PIN_IRQ_MODE_FALLING 0x01
- #define PIN_IRQ_MODE_RISING_FALLING 0x02
- #define PIN_IRQ_DISABLE 0x00
- #define PIN_IRQ_ENABLE 0x01
- #define PIN_IRQ_PIN_NONE -1
- struct rt_device_pin_mode
- {
- rt_uint16_t pin;
- rt_uint16_t mode;
- };
- struct rt_device_pin_status
- {
- rt_uint16_t pin;
- rt_uint16_t status;
- };
- struct rt_pin_irq_hdr
- {
- rt_int16_t pin;
- rt_uint16_t mode;
- void (*hdr)(void *args);
- void *args;
- };
- struct rt_pin_ops
- {
- void (*pin_mode)(struct rt_device *device, rt_base_t pin, rt_base_t mode);
- void (*pin_write)(struct rt_device *device, rt_base_t pin, rt_base_t value);
- int (*pin_read)(struct rt_device *device, rt_base_t pin);
- /* TODO: add GPIO interrupt */
- rt_err_t (*pin_attach_irq)(struct rt_device *device, rt_int32_t pin,
- rt_uint32_t mode, void (*hdr)(void *args), void *args);
- rt_err_t (*pin_dettach_irq)(struct rt_device *device, rt_int32_t pin);
- rt_err_t (*pin_irq_enable)(struct rt_device *device, rt_base_t pin, rt_uint32_t enabled);
- };
- int rt_device_pin_register(const char *name, const struct rt_pin_ops *ops, void *user_data);
- void rt_pin_mode(rt_base_t pin, rt_base_t mode);
- void rt_pin_write(rt_base_t pin, rt_base_t value);
- int rt_pin_read(rt_base_t pin);
- rt_err_t rt_pin_attach_irq(rt_int32_t pin, rt_uint32_t mode,
- void (*hdr)(void *args), void *args);
- rt_err_t rt_pin_dettach_irq(rt_int32_t pin);
- rt_err_t rt_pin_irq_enable(rt_base_t pin, rt_uint32_t enabled);
- int rt_device_pin_irq_register(const char *name, const struct rt_pin_ops *ops,
- void *user_data);
- #ifdef __cplusplus
- }
- #endif
- #endif
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