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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8621 35acf78f-673a-0410-8e92-d51de3d6d3f4

master
Giovanni Di Sirio 2015-12-20 10:39:36 +00:00
parent a952f3cfaf
commit a10028c175
1 changed files with 10 additions and 3 deletions
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13
os/hal/src/hal_buffers.c
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@ -127,9 +127,12 @@ void ibqPostBufferI(io_buffers_queue_t *ibqp, size_t size) {
/**
* @brief Gets the next filled buffer from the queue.
* @note The function always returns the same buffer if called repeatedly.
* @post After calling the function the fields @p ptr and @p top are set
* at beginning and end of the buffer data or @NULL if the queue
* is empty.
*
* @param[out] ibqp pointer to the @p input_buffers_queue_t object
* @return A pointer to the next buffer to be filled.
* @return A pointer to filled buffer area.
* @retval NULL if the queue is empty.
*
* @iclass
@ -139,10 +142,14 @@ uint8_t *ibqGetFullBufferI(input_buffers_queue_t *ibqp) {
osalDbgCheckClassI();
if (ibqIsEmptyI(ibqp)) {
ibqp->ptr = NULL;
ibqp->top = NULL;
return NULL;
}
return ibqp->brdptr + sizeof (size_t);
ibqp->ptr = ibqp->brdptr + sizeof (size_t);
ibqp->top = ibqp->ptr + *((size_t *)ibqp->brdptr);
return ibqp->brdptr;
}
/**
@ -199,7 +206,7 @@ msg_t ibqGetTimeout(input_buffers_queue_t *ibqp, systime_t timeout) {
if (msg < MSG_OK) {
return msg;
}
ibqp->ptr = ibqGetFullBufferI(ibqp);
(void) ibqGetFullBufferI(ibqp);
}
/* Next byte from the buffer.*/