Hello!
As stated in the subject, I'm using the USB virtual com to output the debug console contents. And it works almost great.
It is almost because, when there is no open serial terminal session, the task that is using the PRINTF function will be stuck in here:
#if ((SDK_DEBUGCONSOLE > 0U) || \
((SDK_DEBUGCONSOLE == 0U) && defined(DEBUG_CONSOLE_TRANSFER_NON_BLOCKING) && \
(defined(DEBUG_CONSOLE_TX_RELIABLE_ENABLE) && (DEBUG_CONSOLE_TX_RELIABLE_ENABLE > 0U))))
DEBUG_CONSOLE_FUNCTION_PREFIX status_t DbgConsole_Flush(void)
{
#if defined(DEBUG_CONSOLE_TRANSFER_NON_BLOCKING)
#if (DEBUG_CONSOLE_SYNCHRONIZATION_MODE == DEBUG_CONSOLE_SYNCHRONIZATION_BM) && defined(OSA_USED)
if (s_debugConsoleState.writeRingBuffer.ringHead != s_debugConsoleState.writeRingBuffer.ringTail)
{
return (status_t)kStatus_Fail;
}
#else
while (s_debugConsoleState.writeRingBuffer.ringHead != s_debugConsoleState.writeRingBuffer.ringTail)
{
#if (DEBUG_CONSOLE_SYNCHRONIZATION_MODE == DEBUG_CONSOLE_SYNCHRONIZATION_FREERTOS)
if (0U == IS_RUNNING_IN_ISR())
{
if (taskSCHEDULER_RUNNING == xTaskGetSchedulerState())
{
vTaskDelay(1);
}
}
else
{
return (status_t)kStatus_Fail;
}
#endif
}
#endif
#endif
return (status_t)kStatus_Success;
}
#endif
until a new serial terminal session is open.
As a workaround I have set the DEBUG_CONSOLE_TX_RELIABLE_ENABLE symbol to 0 and the task that is using PRINTF is working correctly when there is no serial terminal session open.
My question is:
Is it the normal behaviour (PRINTF function to be forever waiting in the DbgConsole_Flush function until a new serial terminal session is available)?
My project symbols:
<name>CPU_MIMXRT1064DVL6A</name><value/>
</macro>
<macro>
<name>FSL_RTOS_FREE_RTOS</name><value/>
</macro>
<macro>
<name>XIP_EXTERNAL_FLASH</name><value>1</value>
</macro>
<macro>
<name>USB_DEVICE_CONFIG_CDC_ACM</name><value>1</value>
</macro>
<macro>
<name>DEBUG_CONSOLE_TRANSFER_NON_BLOCKING</name><value/>
</macro>
<macro>
<name>BOARD_USE_VIRTUALCOM</name><value>1</value>
</macro>
<macro>
<name>SERIAL_PORT_TYPE_USBCDC</name><value>1</value>
</macro>
<macro>
<name>PRINTF_FLOAT_ENABLE</name><value>1</value>
</macro>
<macro>
<name>XIP_BOOT_HEADER_ENABLE</name><value>0</value>
</macro>
<macro>
<name>DEBUG_CONSOLE_TX_RELIABLE_ENABLE</name><value>0</value>
</macro>
