AM5728: UART_printf not working inside DCAN interrupt service routine

Raj Johri

Part Number: AM5728
Other Parts Discussed in Thread: SYSBIOS

Hi,

I have an application running on DSP core of AM572x, I am trying to print the received data in the DCAN ISR, but as soon as I call the UART_printf() function to print on console the whole application goes into abort mode and I am getting an error on the JTAG console:

[C66xx_DSP1] ti.sysbios.knl.Semaphore: line 215: assertion failure: A_badContext: bad calling context. Must be called from a Task.

xdc.runtime.Error.raise: terminating execution

Why it is unable to print data on UART console?

Please help

Thanks and Regards

Raj Johri

over 4 years ago

0 ANUBHAV AKASH over 4 years ago

TI__Expert 6870 points

Hi,

Raj Johri said:
I have an application running on DSP core of AM572x,

Is this a custom application or SDK provided?

Can you mention the SDK you are using and other related information to reproduce your use case on our side.

0 Raj Johri over 4 years ago in reply to ANUBHAV AKASH

Prodigy 200 points

Hi Anubhav,

I followed the example DCAN code to create my application, I am just trying to print the received data on DCAN ISR when the loopback is received. But when the code executes UART_printf statement it goes into abort mode with the error mentioned in the question.

SDK used: processor_sdk_rtos_am57xx_06_03_02_08

0 ANUBHAV AKASH over 4 years ago in reply to Raj Johri

TI__Expert 6870 points

Hi,

Raj Johri said:
I followed the example DCAN code to create my application

Ok, Since it is custom application please take reference from any of the available SDK example for DSP core.

You can see rtos template app as starting point. We have Uart drv example also for DSP core.

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AM5728: UART_printf not working inside DCAN interrupt service routine