forum.pistar.uk

Hi,
I have a problem with my MMDVM GPIO on a Rpi 4B 4GB RAM board.. Pi-star turned with a SSD HDrive via USB 3.0

Indeed, when I'm trying pistar-findmodem
no answer, the modem is not detected. It's the same thing with another board

So I can't upgrade the firmware. IWhen I try, have the following message back


Using Parser : Raw BINARY
Interface serial_posix: 57600 8E1
Got byte 0x22 instead of ACK
Unexpected reply from device on command 0x01

I mean that the modem isn't detected

How can I resolve that problem ?
Anybody can help me to do the right command into terminal to resolve that

regard
73 Paul, ON6DP

Hi,
Thanks for replying.
I mean that the problem comes from the configuration. May be I have made a mistake
Indeed, when I'm trying another SD card with Pi-Star that I just had flashed, all is OK.
When I'm back with my config the modem is not recognize.
I don't want reset and re flashed because I have made many test and many programmation and I don't want redoing all that I have made during hours and hours
So I mean that the problem comes from /dev/ttyAMA0 and /dev/ttyS0
but I don't know how resolve
The /dev/ttyAMA0 had dissapeard when the problem was beginning

73 Paul