Send Numbers through MQTT

RE: Send Numbers through MQTT

yeo — Thu, 26 Jan 2023 17:56:26 GMT

Hi, Thanks for the answer! I have resolved this issue by adding

CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE.

RE: Send Numbers through MQTT

Håkon Alseth — Thu, 26 Jan 2023 17:32:59 GMT

Hi,

The function calling the cjson library is a work queue, try adjusting that as well via CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE.

Did you try to resolve the below mentioned register contents to see where it points to?

Kind regards,

Håkon

RE: Send Numbers through MQTT

yeo — Thu, 26 Jan 2023 16:21:07 GMT

Hi, thanks for the information. I have changed CONFIG_HEAP_MEM_POOL_SIZE to 65536 and it still doesn't work. What numbers do you recommend?

best regards,

Yeo Rhi Khin

RE: Send Numbers through MQTT

Håkon Alseth — Thu, 26 Jan 2023 11:23:06 GMT

Hi,

You are getting a stack overflow.

You can check the thread that is failing by looking up the "current thread" address in your build/zephyr/zephyr.map, and the LR and PC content using "arm-none-eabi-addr2line -e build-folder/zephyr/zephyr.elf 0xFAULTING_ADDRESS"

In your case, the issue points towards the memory usage of cJSON objects; which are using dynamic memory allocation.

Try adjusting your heap via CONFIG_HEAP_MEM_POOL_SIZE.

Kind regards,

Håkon

RE: Send Numbers through MQTT

yeo — Thu, 26 Jan 2023 09:30:08 GMT