Debug port UART0 no response


I’ve just install the last firmware for my HL7800 on my HL78xx Dev kit.
All it’s fine, but I’ve no trace in debug port (UART0) and I’ve no response on any command.
The only, trace is on the start sequence with U-Boot.

How I can activate the debug informations and the commands on debug port (UART0) ?


For information, the AT+KUSBCOMP return +KUSBCOMP: 0,0,0,0

You need to set at+switracemode command and reset module


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Thanks, it’s work.

Where we could find this command specification ?
The ‘AirPrime - HL78xx - AT Commands Interface Guide - Rev12’ haven’t any description of this command.