I’m using HL8548 with UART. Hardware flowcontrol enabled by AT&K3.
I send AT+KTEMPMON=1 every 5sec to get module temperature.
Normally “+KTEMPMON” return. However very rare case no response. Then any command no response from HL.
I try to send command other USB port. It return response. And then SIM desertion, “+SIM:0” return to USB port, however no return to UART port.
SIM insert again, then “+SIM:1” return to USB port only. However “+PBREADY” return USB and UART port. So I think UART signal is enabled…
What happen in HL?