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fixed coding style in component/drivers/src 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2384 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
dzzxzz@gmail.com 2012-11-02 04:05:38 +00:00
parent 5d710e8862
commit 1aab195a7d
3 changed files with 319 additions and 301 deletions
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162
components/drivers/src/completion.c
View File

@ -16,108 +16,110 @@
#include <rtthread.h>
#include <rtdevice.h>
#define RT_COMPLETED 1
#define RT_UNCOMPLETED 0
#define RT_COMPLETED 1
#define RT_UNCOMPLETED 0
void rt_completion_init(struct rt_completion* completion)
void rt_completion_init(struct rt_completion *completion)
{
rt_base_t level;
RT_ASSERT(completion != RT_NULL);
rt_base_t level;
RT_ASSERT(completion != RT_NULL);
level = rt_hw_interrupt_disable();
completion->flag = RT_UNCOMPLETED;
rt_list_init(&completion->suspended_list);
rt_hw_interrupt_enable(level);
level = rt_hw_interrupt_disable();
completion->flag = RT_UNCOMPLETED;
rt_list_init(&completion->suspended_list);
rt_hw_interrupt_enable(level);
}
rt_err_t rt_completion_wait(struct rt_completion* completion, rt_int32_t timeout)
rt_err_t rt_completion_wait(struct rt_completion *completion,
rt_int32_t timeout)
{
rt_err_t result;
rt_base_t level;
rt_thread_t thread;
RT_ASSERT(completion != RT_NULL);
rt_err_t result;
rt_base_t level;
rt_thread_t thread;
RT_ASSERT(completion != RT_NULL);
result = RT_EOK;
thread = rt_thread_self();
result = RT_EOK;
thread = rt_thread_self();
level = rt_hw_interrupt_disable();
if (completion->flag != RT_COMPLETED)
{
/* only one thread can suspend on complete */
RT_ASSERT(rt_list_isempty(&(completion->suspended_list)));
level = rt_hw_interrupt_disable();
if (completion->flag != RT_COMPLETED)
{
/* only one thread can suspend on complete */
RT_ASSERT(rt_list_isempty(&(completion->suspended_list)));
if (timeout == 0)
{
result = -RT_ETIMEOUT;
goto __exit;
}
else
{
/* reset thread error number */
thread->error = RT_EOK;
/* suspend thread */
rt_thread_suspend(thread);
/* add to suspended list */
rt_list_insert_before(&(completion->suspended_list), &(thread->tlist));
if (timeout == 0)
{
result = -RT_ETIMEOUT;
goto __exit;
}
else
{
/* reset thread error number */
thread->error = RT_EOK;
/* current context checking */
RT_DEBUG_NOT_IN_INTERRUPT;
/* suspend thread */
rt_thread_suspend(thread);
/* add to suspended list */
rt_list_insert_before(&(completion->suspended_list), &(thread->tlist));
/* start timer */
if (timeout > 0)
{
/* reset the timeout of thread timer and start it */
rt_timer_control(&(thread->thread_timer), RT_TIMER_CTRL_SET_TIME, &timeout);
rt_timer_start(&(thread->thread_timer));
}
/* enable interrupt */
rt_hw_interrupt_enable(level);
/* current context checking */
RT_DEBUG_NOT_IN_INTERRUPT;
/* do schedule */
rt_schedule();
/* start timer */
if (timeout > 0)
{
/* reset the timeout of thread timer and start it */
rt_timer_control(&(thread->thread_timer), RT_TIMER_CTRL_SET_TIME, &timeout);
rt_timer_start(&(thread->thread_timer));
}
/* enable interrupt */
rt_hw_interrupt_enable(level);
/* thread is waked up */
result = thread->error;
/* do schedule */
rt_schedule();
level = rt_hw_interrupt_disable();
/* clean completed flag */
completion->flag = RT_UNCOMPLETED;
}
}
/* thread is waked up */
result = thread->error;
level = rt_hw_interrupt_disable();
/* clean completed flag */
completion->flag = RT_UNCOMPLETED;
}
}
__exit:
rt_hw_interrupt_enable(level);
return result;
rt_hw_interrupt_enable(level);
return result;
}
void rt_completion_done(struct rt_completion* completion)
void rt_completion_done(struct rt_completion *completion)
{
rt_base_t level;
RT_ASSERT(completion != RT_NULL);
rt_base_t level;
RT_ASSERT(completion != RT_NULL);
if(completion->flag == RT_COMPLETED) return;
if (completion->flag == RT_COMPLETED)
return;
level = rt_hw_interrupt_disable();
completion->flag = RT_COMPLETED;
level = rt_hw_interrupt_disable();
completion->flag = RT_COMPLETED;
if (!rt_list_isempty(&(completion->suspended_list)))
{
/* there is one thread in suspended list */
struct rt_thread *thread;
if (!rt_list_isempty(&(completion->suspended_list)))
{
/* there is one thread in suspended list */
struct rt_thread *thread;
/* get thread entry */
thread = rt_list_entry(completion->suspended_list.next, struct rt_thread, tlist);
/* resume it */
rt_thread_resume(thread);
rt_hw_interrupt_enable(level);
/* get thread entry */
thread = rt_list_entry(completion->suspended_list.next, struct rt_thread, tlist);
/* resume it */
rt_thread_resume(thread);
rt_hw_interrupt_enable(level);
/* perform a schedule */
rt_schedule();
}
else
{
rt_hw_interrupt_enable(level);
}
/* perform a schedule */
rt_schedule();
}
else
{
rt_hw_interrupt_enable(level);
}
}

283
components/drivers/src/pipe.c
View File

@ -11,186 +11,195 @@
* Date Author Notes
* 2012-09-30 Bernard first version.
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
static rt_size_t rt_pipe_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
static rt_size_t rt_pipe_read(rt_device_t dev,
rt_off_t pos,
void *buffer,
rt_size_t size)
{
rt_uint32_t level;
rt_thread_t thread;
struct rt_pipe_device *pipe;
rt_size_t read_nbytes;
rt_uint32_t level;
rt_thread_t thread;
struct rt_pipe_device *pipe;
rt_size_t read_nbytes;
pipe = PIPE_DEVICE(dev);
RT_ASSERT(pipe != RT_NULL);
pipe = PIPE_DEVICE(dev);
RT_ASSERT(pipe != RT_NULL);
thread = rt_thread_self();
thread = rt_thread_self();
/* current context checking */
RT_DEBUG_NOT_IN_INTERRUPT;
/* current context checking */
RT_DEBUG_NOT_IN_INTERRUPT;
do
{
level = rt_hw_interrupt_disable();
read_nbytes = rt_ringbuffer_get(&(pipe->ringbuffer), buffer, size);
if (read_nbytes == 0)
{
rt_thread_suspend(thread);
/* waiting on suspended read list */
rt_list_insert_before(&(pipe->suspended_read_list), &(thread->tlist));
rt_hw_interrupt_enable(level);
do
{
level = rt_hw_interrupt_disable();
read_nbytes = rt_ringbuffer_get(&(pipe->ringbuffer), buffer, size);
if (read_nbytes == 0)
{
rt_thread_suspend(thread);
/* waiting on suspended read list */
rt_list_insert_before(&(pipe->suspended_read_list), &(thread->tlist));
rt_hw_interrupt_enable(level);
rt_schedule();
}
else
{
if (!rt_list_isempty(&pipe->suspended_write_list))
{
/* get suspended thread */
thread = rt_list_entry(pipe->suspended_write_list.next,
struct rt_thread, tlist);
rt_schedule();
}
else
{
if (!rt_list_isempty(&pipe->suspended_write_list))
{
/* get suspended thread */
thread = rt_list_entry(pipe->suspended_write_list.next,
struct rt_thread, tlist);
/* resume the write thread */
rt_thread_resume(thread);
rt_hw_interrupt_enable(level);
/* resume the write thread */
rt_thread_resume(thread);
rt_hw_interrupt_enable(level);
rt_schedule();
}
else
{
rt_hw_interrupt_enable(level);
}
break;
}
} while (read_nbytes == 0);
rt_schedule();
}
else
{
rt_hw_interrupt_enable(level);
}
break;
}
} while (read_nbytes == 0);
return read_nbytes;
return read_nbytes;
}
struct rt_pipe_device *_pipe = RT_NULL;
static rt_size_t rt_pipe_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
static rt_size_t rt_pipe_write(rt_device_t dev,
rt_off_t pos,
const void *buffer,
rt_size_t size)
{
rt_uint32_t level;
rt_thread_t thread;
struct rt_pipe_device *pipe;
rt_size_t write_nbytes;
rt_uint32_t level;
rt_thread_t thread;
struct rt_pipe_device *pipe;
rt_size_t write_nbytes;
pipe = PIPE_DEVICE(dev);
RT_ASSERT(pipe != RT_NULL);
if (_pipe == RT_NULL)
_pipe = pipe;
thread = rt_thread_self();
pipe = PIPE_DEVICE(dev);
RT_ASSERT(pipe != RT_NULL);
if (_pipe == RT_NULL)
_pipe = pipe;
/* current context checking */
RT_DEBUG_NOT_IN_INTERRUPT;
thread = rt_thread_self();
do
{
level = rt_hw_interrupt_disable();
write_nbytes = rt_ringbuffer_put(&(pipe->ringbuffer), buffer, size);
if (write_nbytes == 0)
{
/* pipe full, waiting on suspended write list */
rt_thread_suspend(thread);
/* waiting on suspended read list */
rt_list_insert_before(&(pipe->suspended_write_list), &(thread->tlist));
rt_hw_interrupt_enable(level);
/* current context checking */
RT_DEBUG_NOT_IN_INTERRUPT;
rt_schedule();
}
else
{
if (!rt_list_isempty(&pipe->suspended_read_list))
{
/* get suspended thread */
thread = rt_list_entry(pipe->suspended_read_list.next,
struct rt_thread, tlist);
do
{
level = rt_hw_interrupt_disable();
write_nbytes = rt_ringbuffer_put(&(pipe->ringbuffer), buffer, size);
if (write_nbytes == 0)
{
/* pipe full, waiting on suspended write list */
rt_thread_suspend(thread);
/* waiting on suspended read list */
rt_list_insert_before(&(pipe->suspended_write_list), &(thread->tlist));
rt_hw_interrupt_enable(level);
/* resume the read thread */
rt_thread_resume(thread);
rt_hw_interrupt_enable(level);
rt_schedule();
}
else
{
if (!rt_list_isempty(&pipe->suspended_read_list))
{
/* get suspended thread */
thread = rt_list_entry(pipe->suspended_read_list.next,
struct rt_thread, tlist);
rt_schedule();
}
else
{
rt_hw_interrupt_enable(level);
}
break;
}
}while (write_nbytes == 0);
/* resume the read thread */
rt_thread_resume(thread);
rt_hw_interrupt_enable(level);
return write_nbytes;
rt_schedule();
}
else
{
rt_hw_interrupt_enable(level);
}
break;
}
}while (write_nbytes == 0);
return write_nbytes;
}
static rt_err_t rt_pipe_control(rt_device_t dev, rt_uint8_t cmd, void *args)
{
return RT_EOK;
return RT_EOK;
}
rt_err_t rt_pipe_create(const char* name, rt_size_t size)
rt_err_t rt_pipe_create(const char *name, rt_size_t size)
{
rt_err_t result = RT_EOK;
rt_uint8_t* rb_memptr = RT_NULL;
struct rt_pipe_device *pipe = RT_NULL;
rt_err_t result = RT_EOK;
rt_uint8_t *rb_memptr = RT_NULL;
struct rt_pipe_device *pipe = RT_NULL;
/* get aligned size */
size = RT_ALIGN(size, RT_ALIGN_SIZE);
pipe = (struct rt_pipe_device*) rt_calloc (1, sizeof(struct rt_pipe_device));
if (pipe != RT_NULL)
{
/* create ring buffer of pipe */
rb_memptr = rt_malloc(size);
if (rb_memptr == RT_NULL)
{
result = -RT_ENOMEM;
goto __exit;
}
/* initialize suspended list */
rt_list_init(&pipe->suspended_read_list);
rt_list_init(&pipe->suspended_write_list);
/* initialize ring buffer */
rt_ringbuffer_init(&pipe->ringbuffer, rb_memptr, size);
/* get aligned size */
size = RT_ALIGN(size, RT_ALIGN_SIZE);
pipe = (struct rt_pipe_device *)rt_calloc(1, sizeof(struct rt_pipe_device));
if (pipe != RT_NULL)
{
/* create ring buffer of pipe */
rb_memptr = rt_malloc(size);
if (rb_memptr == RT_NULL)
{
result = -RT_ENOMEM;
goto __exit;
}
/* initialize suspended list */
rt_list_init(&pipe->suspended_read_list);
rt_list_init(&pipe->suspended_write_list);
/* initialize ring buffer */
rt_ringbuffer_init(&pipe->ringbuffer, rb_memptr, size);
/* create device */
pipe->parent.type = RT_Device_Class_Char;
pipe->parent.init = RT_NULL;
pipe->parent.open = RT_NULL;
pipe->parent.close = RT_NULL;
pipe->parent.read = rt_pipe_read;
pipe->parent.write = rt_pipe_write;
pipe->parent.control = rt_pipe_control;
/* create device */
pipe->parent.type = RT_Device_Class_Char;
pipe->parent.init = RT_NULL;
pipe->parent.open = RT_NULL;
pipe->parent.close = RT_NULL;
pipe->parent.read = rt_pipe_read;
pipe->parent.write = rt_pipe_write;
pipe->parent.control = rt_pipe_control;
return rt_device_register(&(pipe->parent), name, RT_DEVICE_FLAG_RDWR);
}
else
{
result = -RT_ENOMEM;
}
return rt_device_register(&(pipe->parent), name, RT_DEVICE_FLAG_RDWR);
}
else
{
result = -RT_ENOMEM;
}
__exit:
if (pipe != RT_NULL) rt_free(pipe);
if (rb_memptr != RT_NULL) rt_free(rb_memptr);
if (pipe != RT_NULL)
rt_free(pipe);
if (rb_memptr != RT_NULL)
rt_free(rb_memptr);
return result;
return result;
}
RTM_EXPORT(rt_pipe_create);
void rt_pipe_destroy(struct rt_pipe_device* pipe)
void rt_pipe_destroy(struct rt_pipe_device *pipe)
{
if (pipe == RT_NULL) return;
if (pipe == RT_NULL)
return;
/* un-register pipe device */
rt_device_unregister(&(pipe->parent));
/* un-register pipe device */
rt_device_unregister(&(pipe->parent));
/* release memory */
rt_free(pipe->ringbuffer.buffer_ptr);
rt_free(pipe);
/* release memory */
rt_free(pipe->ringbuffer.buffer_ptr);
rt_free(pipe);
return;
return;
}
RTM_EXPORT(rt_pipe_destroy);

175
components/drivers/src/ringbuffer.c
View File

@ -16,51 +16,56 @@
#include <rtdevice.h>
#include <string.h>
void rt_ringbuffer_init(struct rt_ringbuffer* rb, rt_uint8_t *pool, rt_uint16_t size)
void rt_ringbuffer_init(struct rt_ringbuffer *rb,
rt_uint8_t *pool,
rt_uint16_t size)
{
RT_ASSERT(rb != RT_NULL);
RT_ASSERT(rb != RT_NULL);
/* initialize read and write index */
rb->read_index = rb->write_index = 0;
/* initialize read and write index */
rb->read_index = rb->write_index = 0;
/* set buffer pool and size */
rb->buffer_ptr = pool;
rb->buffer_size = RT_ALIGN_DOWN(size, RT_ALIGN_SIZE);
/* set buffer pool and size */
rb->buffer_ptr = pool;
rb->buffer_size = RT_ALIGN_DOWN(size, RT_ALIGN_SIZE);
}
RTM_EXPORT(rt_ringbuffer_init);
rt_size_t rt_ringbuffer_put(struct rt_ringbuffer* rb, const rt_uint8_t *ptr, rt_uint16_t length)
rt_size_t rt_ringbuffer_put(struct rt_ringbuffer *rb,
const rt_uint8_t *ptr,
rt_uint16_t length)
{
rt_uint16_t size;
rt_uint16_t mask;
rt_uint16_t write_position;
RT_ASSERT(rb != RT_NULL);
rt_uint16_t size;
rt_uint16_t mask;
rt_uint16_t write_position;
RT_ASSERT(rb != RT_NULL);
mask = rb->buffer_size - 1;
/* whether has enough space */
size = rb->buffer_size - (rb->write_index - rb->read_index);
mask = rb->buffer_size - 1;
/* whether has enough space */
size = rb->buffer_size - (rb->write_index - rb->read_index);
/* no space */
if (size == 0) return 0;
/* drop some data */
if (size < length) length = size;
/* no space */
if (size == 0) return 0;
/* drop some data */
if (size < length) length = size;
write_position = (rb->write_index & mask);
if (rb->buffer_size - write_position> length)
{
/* read_index - write_index = empty space */
memcpy(&rb->buffer_ptr[write_position], ptr, length);
}
else
{
memcpy(&rb->buffer_ptr[write_position], ptr, rb->buffer_size - write_position);
memcpy(&rb->buffer_ptr[0], &ptr[rb->buffer_size - write_position],
length - (rb->buffer_size - write_position));
}
rb->write_index += length;
write_position = (rb->write_index & mask);
if (rb->buffer_size - write_position> length)
{
/* read_index - write_index = empty space */
memcpy(&rb->buffer_ptr[write_position], ptr, length);
}
else
{
memcpy(&rb->buffer_ptr[write_position], ptr,
rb->buffer_size - write_position);
memcpy(&rb->buffer_ptr[0], &ptr[rb->buffer_size - write_position],
length - (rb->buffer_size - write_position));
}
rb->write_index += length;
return length;
return length;
}
RTM_EXPORT(rt_ringbuffer_put);
@ -69,80 +74,82 @@ RTM_EXPORT(rt_ringbuffer_put);
*/
rt_size_t rt_ringbuffer_putchar(struct rt_ringbuffer* rb, const rt_uint8_t ch)
{
rt_uint16_t mask;
rt_uint16_t mask;
RT_ASSERT(rb != RT_NULL);
/* whether has enough space */
mask = rb->buffer_size - 1;
/* whether has enough space */
if (rb->write_index - rb->read_index == rb->buffer_size) return 0;
RT_ASSERT(rb != RT_NULL);
/* whether has enough space */
mask = rb->buffer_size - 1;
/* whether has enough space */
if (rb->write_index - rb->read_index == rb->buffer_size) return 0;
/* put character */
rb->buffer_ptr[rb->write_index & mask] = ch;
rb->write_index += 1;
/* put character */
rb->buffer_ptr[rb->write_index & mask] = ch;
rb->write_index += 1;
return 1;
return 1;
}
RTM_EXPORT(rt_ringbuffer_putchar);
/**
* get data from ring buffer
*/
rt_size_t rt_ringbuffer_get(struct rt_ringbuffer* rb, rt_uint8_t *ptr, rt_uint16_t length)
rt_size_t rt_ringbuffer_get(struct rt_ringbuffer *rb,
rt_uint8_t *ptr,
rt_uint16_t length)
{
rt_size_t size;
rt_uint16_t mask;
rt_uint16_t read_position;
rt_size_t size;
rt_uint16_t mask;
rt_uint16_t read_position;
RT_ASSERT(rb != RT_NULL);
/* whether has enough data */
mask = rb->buffer_size - 1;
size = rb->write_index - rb->read_index;
RT_ASSERT(rb != RT_NULL);
/* whether has enough data */
mask = rb->buffer_size - 1;
size = rb->write_index - rb->read_index;
/* no data */
if (size == 0) return 0;
/* less data */
if (size < length) length = size;
/* no data */
if (size == 0) return 0;
/* less data */
if (size < length) length = size;
read_position = rb->read_index & mask;
if (rb->buffer_size - read_position >= length)
{
/* copy all of data */
memcpy(ptr, &rb->buffer_ptr[read_position], length);
}
else
{
/* copy first and second */
memcpy(ptr, &rb->buffer_ptr[read_position], rb->buffer_size - read_position);
memcpy(&ptr[rb->buffer_size - read_position], &rb->buffer_ptr[0],
length - rb->buffer_size + read_position);
}
rb->read_index += length;
read_position = rb->read_index & mask;
if (rb->buffer_size - read_position >= length)
{
/* copy all of data */
memcpy(ptr, &rb->buffer_ptr[read_position], length);
}
else
{
/* copy first and second */
memcpy(ptr, &rb->buffer_ptr[read_position],
rb->buffer_size - read_position);
memcpy(&ptr[rb->buffer_size - read_position], &rb->buffer_ptr[0],
length - rb->buffer_size + read_position);
}
rb->read_index += length;
return length;
return length;
}
RTM_EXPORT(rt_ringbuffer_get);
/**
* get a character from a ringbuffer
*/
rt_size_t rt_ringbuffer_getchar(struct rt_ringbuffer* rb, rt_uint8_t *ch)
rt_size_t rt_ringbuffer_getchar(struct rt_ringbuffer *rb, rt_uint8_t *ch)
{
rt_uint16_t mask;
rt_uint16_t mask;
RT_ASSERT(rb != RT_NULL);
/* ringbuffer is empty */
if (rb->read_index == rb->write_index) return 0;
RT_ASSERT(rb != RT_NULL);
/* ringbuffer is empty */
if (rb->read_index == rb->write_index) return 0;
mask = rb->buffer_size - 1;
mask = rb->buffer_size - 1;
/* put character */
*ch = rb->buffer_ptr[rb->read_index & mask];
rb->read_index += 1;
/* put character */
*ch = rb->buffer_ptr[rb->read_index & mask];
rb->read_index += 1;
return 1;
return 1;
}
RTM_EXPORT(rt_ringbuffer_getchar);