| Line 103... |
Line 103... |
/* The interrupt was caused by the THR becoming empty. Are there any
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/* The interrupt was caused by the THR becoming empty. Are there any
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more characters to transmit?
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more characters to transmit?
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Because FreeRTOS is not supposed to run with nested interrupts, put all OS
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Because FreeRTOS is not supposed to run with nested interrupts, put all OS
|
calls in a critical section . */
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calls in a critical section . */
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|
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/* FIXME, entering, exiting ciritical section around
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/* entering, exiting ciritical section around xQueueReceiveFromISR is not
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xQueueReceiveFromISR is not work */
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required. OpenRISC automaticaly disable interrupt when expection occurs */
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#if 0
|
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portENTER_CRITICAL();
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retstatus = xQueueReceiveFromISR( xCharsForTx, &cChar, &xHigherPriorityTaskWoken );
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retstatus = xQueueReceiveFromISR( xCharsForTx, &cChar, &xHigherPriorityTaskWoken );
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portEXIT_CRITICAL();
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#else
|
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retstatus = xQueueReceiveFromISR( xCharsForTx, &cChar, &xHigherPriorityTaskWoken );
|
|
#endif
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|
|
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if (retstatus == pdTRUE)
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if (retstatus == pdTRUE)
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{
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{
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/* A character was retrieved from the queue so can be sent to the
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/* A character was retrieved from the queue so can be sent to the
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THR now. */
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THR now. */
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| Line 133... |
Line 127... |
{
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{
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/* The interrupt was caused by the receiver getting data. */
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/* The interrupt was caused by the receiver getting data. */
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cChar = uart_getc_noblock(0);
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cChar = uart_getc_noblock(0);
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|
|
/* Because FreeRTOS is not supposed to run with nested interrupts, put all OS
|
/* Because FreeRTOS is not supposed to run with nested interrupts, put all OS
|
calls in a critical section . */
|
calls in a critical section . but in case of OpenRISC, it is not required. Tick
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portENTER_CRITICAL();
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, External interrupt are automaticaly disabled. */
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xQueueSendFromISR(xRxedChars, &cChar, &xHigherPriorityTaskWoken);
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xQueueSendFromISR(xRxedChars, &cChar, &xHigherPriorityTaskWoken);
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portEXIT_CRITICAL();
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}
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}
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|
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/* The return value will be used by portEXIT_SWITCHING_ISR() to know if it
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/* The return value will be used by portEXIT_SWITCHING_ISR() to know if it
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should perform a vTaskSwitchContext(). */
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should perform a vTaskSwitchContext(). */
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// return ( xHigherPriorityTaskWoken );
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// return ( xHigherPriorityTaskWoken );
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