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/*
* File : rtdevice.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2012-01-08 bernard first version.
*/
#ifndef __RT_DEVICE_H__
#define __RT_DEVICE_H__
#include <rtthread.h>
#define RT_DEVICE(device) ((rt_device_t)device)
/* completion flag */
struct rt_completion
{
rt_uint32_t flag;
/* suspended list */
rt_list_t suspended_list;
};
#define RT_RINGBUFFER_SIZE(rb) ((rb)->write_index - (rb)->read_index)
#define RT_RINGBUFFER_EMPTY(rb) ((rb)->buffer_size - RT_RINGBUFFER_SIZE(rb))
/* ring buffer */
struct rt_ringbuffer
{
rt_uint16_t read_index, write_index;
rt_uint8_t *buffer_ptr;
rt_uint16_t buffer_size;
};
/* pipe device */
#define PIPE_DEVICE(device) ((struct rt_pipe_device*)(device))
struct rt_pipe_device
{
struct rt_device parent;
/* ring buffer in pipe device */
struct rt_ringbuffer ringbuffer;
/* suspended list */
rt_list_t suspended_read_list;
rt_list_t suspended_write_list;
};
#define RT_DATAQUEUE_EVENT_UNKNOWN 0x00
#define RT_DATAQUEUE_EVENT_POP 0x01
#define RT_DATAQUEUE_EVENT_PUSH 0x02
#define RT_DATAQUEUE_EVENT_LWM 0x03
struct rt_data_item;
#define RT_DATAQUEUE_SIZE(dq) ((dq)->put_index - (dq)->get_index)
#define RT_DATAQUEUE_EMPTY(dq) ((dq)->size - RT_DATAQUEUE_SIZE(dq))
/* data queue implementation */
struct rt_data_queue
{
rt_uint16_t size;
rt_uint16_t lwm;
rt_bool_t waiting_lwm;
rt_uint16_t get_index;
rt_uint16_t put_index;
struct rt_data_item *queue;
rt_list_t suspended_push_list;
rt_list_t suspended_pop_list;
/* event notify */
void (*evt_notify)(struct rt_data_queue *queue, rt_uint32_t event);
};
/**
* Completion
*/
void rt_completion_init(struct rt_completion *completion);
rt_err_t rt_completion_wait(struct rt_completion *completion,
rt_int32_t timeout);
void rt_completion_done(struct rt_completion *completion);
/**
* RingBuffer for DeviceDriver
*
* Please note that the ring buffer implementation of RT-Thread
* has no thread wait or resume feature.
*/
void rt_ringbuffer_init(struct rt_ringbuffer *rb,
rt_uint8_t *pool,
rt_uint16_t size);
rt_size_t rt_ringbuffer_put(struct rt_ringbuffer *rb,
const rt_uint8_t *ptr,
rt_uint16_t length);
rt_size_t rt_ringbuffer_putchar(struct rt_ringbuffer *rb,
const rt_uint8_t ch);
rt_size_t rt_ringbuffer_get(struct rt_ringbuffer *rb,
rt_uint8_t *ptr,
rt_uint16_t length);
rt_size_t rt_ringbuffer_getchar(struct rt_ringbuffer *rb, rt_uint8_t *ch);
rt_inline rt_uint16_t rt_ringbuffer_get_size(struct rt_ringbuffer *rb)
{
RT_ASSERT(rb != RT_NULL);
return rb->buffer_size;
}
/**
* Pipe Device
*/
rt_err_t rt_pipe_create(const char *name, rt_size_t size);
void rt_pipe_destroy(struct rt_pipe_device *pipe);
/**
* DataQueue for DeviceDriver
*/
rt_err_t rt_data_queue_init(struct rt_data_queue *queue,
rt_uint16_t size,
rt_uint16_t lwm,
void (*evt_notify)(struct rt_data_queue *queue, rt_uint32_t event));
rt_err_t rt_data_queue_push(struct rt_data_queue *queue,
void *data_ptr,
rt_size_t data_size,
rt_int32_t timeout);
rt_err_t rt_data_queue_pop(struct rt_data_queue *queue,
void **data_ptr,
rt_size_t *size,
rt_int32_t timeout);
rt_err_t rt_data_queue_peak(struct rt_data_queue *queue,
void **data_ptr,
rt_size_t *size);
void rt_data_queue_reset(struct rt_data_queue *queue);
#ifdef RT_USING_RTC
#include "drivers/rtc.h"
#endif /* RT_USING_RTC */
#ifdef RT_USING_SPI
#include "drivers/spi.h"
#endif /* RT_USING_SPI */
#ifdef RT_USING_MTD_NOR
#include "drivers/mtd_nor.h"
#endif /* RT_USING_MTD_NOR */
#ifdef RT_USING_MTD_NAND
#include "drivers/mtd_nand.h"
#endif /* RT_USING_MTD_NAND */
#ifdef RT_USING_USB_DEVICE
#include "drivers/usb_device.h"
#endif /* RT_USING_USB_DEVICE */
#ifdef RT_USING_USB_HOST
#include "drivers/usb_host.h"
#endif /* RT_USING_USB_HOST */
#ifdef RT_USING_SERIAL
#include "drivers/serial.h"
#endif /* RT_USING_SERIAL */
#ifdef RT_USING_I2C
#include "drivers/i2c.h"
#include "drivers/i2c_dev.h"
#ifdef RT_USING_I2C_BITOPS
#include "drivers/i2c-bit-ops.h"
#endif /* RT_USING_I2C_BITOPS */
#endif /* RT_USING_I2C */
#ifdef RT_USING_SDIO
#include "drivers/mmcsd_core.h"
#include "drivers/sd.h"
#include "drivers/sdio.h"
#endif
#endif /* __RT_DEVICE_H__ */
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