Multi-NUS with USB CDC Support upgraded to SDK v2.5.0

[Starbuck]

We have Multi-NUS running with USB CDC Support upgraded to SDK v2.5.0, but I only have Rx working when connected to another dev board running the Peripheral UART Sample.  I'm not sure why Tx (sending from Multi-NUS central to the Peripheral) isn't working.  Attached (link below) is my project.  Please let me know your thoughts.

dongle.zip

Thanks,

Starbuck

[Hieu]

Hi Starbuck,

There was a case in the past with similar symptoms, where the issue is a stack overflow.

It is not certain that it is the problem here, but could you please try to increase the stack size with CONFIG_MAIN_STACK_SIZE and see if it helps?

Regards,

Hieu

[Starbuck]

Here are my memory config sizes (same as the Peripheral UART example):

# Enable the BLE modules from NCS
CONFIG_BT_NUS_CLIENT=y
CONFIG_BT_SCAN=y
CONFIG_BT_SCAN_FILTER_ENABLE=y
CONFIG_BT_SCAN_UUID_CNT=1
CONFIG_BT_GATT_DM=y
CONFIG_HEAP_MEM_POOL_SIZE=2048

# This example requires more workqueue stack
CONFIG_MAIN_STACK_SIZE=1152
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048

I doubled the stack size, but I'm still seeing the same issue.

CONFIG_MAIN_STACK_SIZE=2304

 

Do you see any glaring issues with the dongle.zip project I shared?

We started with the Multi-NUS example, upgraded it from SDK v1.4.1 to SDK v2.5.0, and then used the Peripheral UART Sample as a guide to add USB CDC support.