nRF52832 DK UART communication with DSP 28335 module(NRF_BREAKPOINT_COND)

[Yclee]

Hello,

I just solved the previous problem thanks to the reply. Thank you a lot.

But, I have one more question..

I was tested UART central example( ble_app_uart_c) with PC and can receive/transmit data well.

However, when I connect UART pin into DSP module(microprocessor), 

It goes

In, app_error_weak.c: NRF_BREAKPOINT_COND(line 100)

I was searched in this site similar questions(keyword: NRF_BREAKPOINT_COND),

but unfortunately I cannot understand how could I do.

It this message(error) means something wrong with H/W configuration? (or S/W coding)

The only changed thing is communication object (PC to DSP) and nothing changed in source code.

Sorry for a lot of questions, and thank you for reading my question.

(+ I debugged the communication data, and find 2 cycle communication success(my guess) in DSP ( DSP received data: \x00 )

Best Regards,

Yclee.

[awneil]

That means your code is ending in the Error Handler.

So use your debugger to find what is causing the error.

One possible cause:

devzone.nordicsemi.com/.../161677

devzone.nordicsemi.com/.../161679

[Yclee]

Thank you for your reply

I just watched possible cause cases, 

and checked

1) sdk_config.h - NRF_LOG_BACKEND_UART_ENABLED (there is no this variable)

2) nrfx_uart.c - line 91 - nrf_gpio_cfg_input(p_config->pselrxd, NRF_GPIO_PIN_PULLUP) 

(I changed the code NOPULL to PULLUP)

but it also go into same message.. 

If I will find the reason, i will wirte reply.

+ also I was double-checked  the UART setting(parity, stop bit, char-length, etc.)

Best Regards,

Yclee

[Edvin]

Add DEBUG to your preprocessor definitions. Let me know what IDE you are using if you are not sure how to do this.

Do you see any logs from your application? If not, is NRF_LOG_ENABLED set to 0 or 1 in sdk_config.h? And which backend is enabled?

If you have logging: What does the log say after you added DEBUG to your preprocessor definitions? Where does it point to, and what function returned the parameter that was passed in on this line?

If you don't have logging, disable optimization and check the error handler. Where does it point to, and what returned the value that it points to?

There are a lot of cases here on how the error handler works. Try to look up a few if you are stuck, and let me know if you are really stuck. 

BR,
Edvin

[Yclee]

Thank you for reply.

I am using Segger Embedded Studio.

I will DEBUG the processor and try it again.

Best Regards,

Yclee

[awneil]

It's the code that needs debugging!

[Yclee]

Okay ! Thank you for reply again.

I will DEBUG the nrf code (https://github.com/NordicPlayground/nRF52-ADC-examples) 

and DSP28335 code again. I think the nrf code is no error because it works well in nrf to PC condition.

I think I will more focus on DSP code...

Have a nice day!

Best Regards,

Yclee