threadx/utility/rtos_compatibility_layers/FreeRTOS/tx_freertos.c at master · eclipse-threadx/threadx (github.com)
[C] 纯文本查看 复制代码 BaseType_t xQueueOverwrite(QueueHandle_t xQueue,
const void * pvItemToQueue)
{
TX_INTERRUPT_SAVE_AREA;
UINT ret;
UINT read_post;
uint8_t *p_write_temp;
configASSERT(xQueue != NULL);
configASSERT(pvItemToQueue != NULL);
read_post = 0u;
TX_DISABLE;
if(xQueue->read_sem.tx_semaphore_count != 0u) {
// Go back one message.
p_write_temp = xQueue->p_write;
if(p_write_temp == xQueue->p_mem) {
p_write_temp = (xQueue->p_mem + (xQueue->msg_size * (xQueue->queue_length - 1u)));
} else {
p_write_temp -= xQueue->msg_size;
}
memcpy(p_write_temp, pvItemToQueue, xQueue->msg_size);
} else {
memcpy(xQueue->p_write, pvItemToQueue, xQueue->msg_size);
if(xQueue->p_write >= (xQueue->p_mem + (xQueue->msg_size * (xQueue->queue_length - 1u)))) {
xQueue->p_write = xQueue->p_mem;
} else {
xQueue->p_write += xQueue->msg_size;
}
read_post = 1u;
}
TX_RESTORE;
if(read_post == 1u) {
// Signal that there is an additional message available on the queue.
ret = tx_semaphore_put(&xQueue->read_sem);
if(ret != TX_SUCCESS) {
TX_FREERTOS_ASSERT_FAIL();
return pdFALSE;
}
}
return pdPASS;
}
[C] 纯文本查看 复制代码 BaseType_t xQueuePeek(QueueHandle_t xQueue,
void *pvBuffer,
TickType_t xTicksToWait)
{
TX_INTERRUPT_SAVE_AREA;
UINT timeout;
UINT ret;
configASSERT(xQueue != NULL);
configASSERT(pvBuffer != NULL);
if(xTicksToWait == portMAX_DELAY) {
timeout = TX_WAIT_FOREVER;
} else {
timeout = (UINT)xTicksToWait;
}
// Wait for a message to be available on the queue.
ret = tx_semaphore_get(&xQueue->read_sem, timeout);
if(ret != TX_SUCCESS) {
return pdFAIL;
}
// Retrieve the message.
TX_DISABLE;
_tx_thread_preempt_disable++;
memcpy(pvBuffer, xQueue->p_read, xQueue->msg_size);
// Restore the original space on the queue.
ret = tx_semaphore_put(&xQueue->read_sem);
if(ret != TX_SUCCESS) {
TX_FREERTOS_ASSERT_FAIL();
return pdFALSE;
}
_tx_thread_preempt_disable--;
TX_RESTORE;
return pdPASS;
}
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发表于 2023-6-4 10:28:15
，其他操作系统一次最多只能发送 4 字节。大容量消息，可以发送指针就可以了。
楼主
发表于 2023-6-5 00:09:02
