printf / NRF_LOG_INFO prints

[doryhealth]

Hello everyone

I hope summer's kind with you (or winter, for the southern hemisphere...)

Here's the deal: my printf and NRF_LOG_INFO output zeros, while my register clearly displays non zero values

Context:

- Based my code on the Peripheral > blinky freeRTOS code example

- I am now using TWIM to read sensor values (TXRX xfer) and would like to output values in the twim_handler

My setup:

- Customer board with nRF52833; debugger using nRF52840-DK

- Segger

- SDK nRF 17.0.2

- Extract from sdk_config.h

• nRF_Drivers
  • NRFX_UART_ENABLED 1
  • NRFX_UARTE_ENABLED 1
  • UART_ENABLED 1
•  nRF_Log
  • LOGNRF_LOG_BACKEND_RTT_ENABLED 1
  • NRF_LOG_BACKEND_UART_ENABLED 1
  • NRF_LOG_ENABLED 1
  • SEGGER_RTT_CONFIG_DEFAULT_MODE: 2 = BLOCK_IF_FIFO_FULL

Do you think I should ...
- ...persevere and find the problem (hopefully with your help)

- ...look into Libuarte

-... something else?

Thank you, in advance, for your help!

Jerome

[Susheel Nuguru]

probably the variable var is optimized away being a static inline using a log of debug macro preprocessor helpers. It is possible that the compiler thinks it knows what it is doing and optimizing away var. try to make local copy of var and use that copy in log instead and see if my suspicion is right.