Function for sending Sigfox message never returns on STM32WLE5C8

[APOIR.1]

Hi,

I'm using Sigfox PushButton example on STM32WLE5C8 with LPTIM, ADC and UART deactivated.

I believe ADC and UART are not needed for my use, and LPTIM is only required for Monarch if I'm not misunderstanding.

When I send a Sigfox message, I use the Sigfox API function SIGFOX_API_send_frame()

The message is well received by Sigfox backend (no particular issues with configurations or radio then). However the function never returns.

After some investigations I found out that I get stucked into RF_API_send() function of rf_api.c (from Sigfox/Target directory). The message is correctly sent, then I go into an infinite loop with "UTIL_SEQ_WaitEvt(1 << CFG_SEQ_Evt_TxTimeout);"

I believe my RTC and other clocks are correctly configured (HAL_Delay() works well).

What can be the cause of that infinite wait for a send event ?

(Downlink flag is set to zero)

Thanks per advance

[APOIR.1]

Is someone from ST support looking after this ? I'm still facing this issue and didn't find any way to resolve it for now

[aperrot]

I met the same problem, there is someone who has an idea about this bug?