topic Re: The application can no longer enter interrupts when using printf in main() to print a message. in S32 Design Studio

The application can no longer enter interrupts when using printf in main() to print a message.

liuww_fnst — Thu, 21 Mar 2019 12:42:19 GMT

I'm now having a problem when using printf in the main function.
I do observe the messsage from the console.
And the INTVEC is updated，but the interrupts can no longer be entered.

Without using the printf, the interrupts work well.

I configured my project as the follows.

Is there any connection between the printf and the interrupts?

How can I use the printf correctly without affecting the interrupts?

Best regards!

Laura

Re: The application can no longer enter interrupts when using printf in main() to print a message.

jiri_kral — Thu, 21 Mar 2019 14:47:05 GMT

Hi Laura,

thank you for report, I can reproduce your issue. I'll do more investigation and hope will be back with solution.

Jiri

Re: The application can no longer enter interrupts when using printf in main() to print a message.

jiri_kral — Mon, 25 Mar 2019 13:38:48 GMT

Hi,

I figured out, that my issue is related to MPC5748G only (there is the same Z4 core). I did some test with MPC5744P - and there is no issue - at least with pll + interrupt example with added semihosting console support:

Can you please share your project?

Re: The application can no longer enter interrupts when using printf in main() to print a message.

liuww_fnst — Tue, 26 Mar 2019 01:23:25 GMT

Hi Jiri,

Thanks for your help.

I have also tried the pll + interrupt example . The same issue happened.

The changes I made are as follows.

1.Libraries support

2. semihosting support

3. Printf function

but as you see the application just can't stop at the breakpoint in the PIT0_isr .

Is there anything wrong with my changes above?

Best regards!

Laura

Re: The application can no longer enter interrupts when using printf in main() to print a message.

jiri_kral — Tue, 26 Mar 2019 09:29:53 GMT

Hi,

the only difference what I can identify is that you are using older version of PE Micro debug plugin. On third screenshot I can see gdbjtag.ppc_1.7.2 . On my machine is latest version - 1.8.3.

Try to update your PE Micro debug plugin - https://community.nxp.com/docs/DOC-342273

Hope it helps.

Jiri

Re: The application can no longer enter interrupts when using printf in main() to print a message.

alexanderfedoto — Tue, 26 Mar 2019 15:57:22 GMT

liuww.fnst@cn.fujitsu.com‌

Jiri is right, you have to update P&E plugin. They have fixed this issue since version 1.7.3

Re: The application can no longer enter interrupts when using printf in main() to print a message.

liuww_fnst — Wed, 27 Mar 2019 02:51:48 GMT

Hi，

I updated the PE Micro debug plugin and now it works well.

Thanks very much.

Best regards!

Laura