forum.pistar.uk

Set the modem configuration to

MMDVM_HS_Hat (DB9MAT & DF2ET) for Pi (GPIO)


and try a reboot, then run the command again.
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RESOLVED! First I ran the update with the following steps:

pistar-mmdvmhshatflash hs_hat
"at the end of the procedure DO NOT PRESS ANY KEY TO REBOOT wait two or ...

Well that explains why the RPi 4 detection isn't resetting the modem as required.

Set the modem configuration to and try a reboot, then run the command again.
[/quote]

Tonight I'll try and let you know.
I take this opportunity to thank everyone.

After updating, all the modem LEDs flash three times.


Not after updating, I mean from a complete power off. Do the LEDS on the hat flash 3 times when you power on the hotspot?

The red LED of the modem never lights up after a shutdown. It turns on steady after the update is finished. As soon ...

This is the result after sending the "sudo pistar-mmdvmhshatreset" command

NO R-Pi has a 44 pin header. All since the model 1B+ have 40 pin headers. However the prior poster said "PIN 44 of the STM" chip itself. You need to locate that pin on the chip, and do a circuit trace to wherever it ends up on the connector block.


I will never be able to find where pin 44 ...

I will never be able to find where pin 44 is connected.


The arrow is pointing at pin 48, count down as you move up the left side of pins.

You'll probably have to unsolder the OLED to find a via where the trace moves to the backside of the PCB.

Eventually the trace winds up on pin 38 of the ...

Thanks for the suggestion, tonight I try to send the command "sudo pistar-mmdvmhshatreset" and I check pin 44 to see if it is connected to ground.
Sorry, but pin 44 does not exist in Rasberry 4, there are only 40 pins!


NO R-Pi has a 44 pin header. All since the model 1B+ have 40 pin headers ...

Thanks for the suggestion, tonight I try to send the command "sudo pistar-mmdvmhshatreset" and I check pin 44 to see if it is connected to ground.
Sorry, but pin 44 does not exist in Rasberry 4, there are only 40 pins!
If I can't get it to work, patience I'll buy a Raspberri 3+.
Thanks 73 IW9HJD Nino

Hi, I have a weird problem with my Pi-Star, I assembled it with a Raspberry 4 only it doesn't see the TRX (SIMPLEX). It starts to work perfectly only after sending the command "sudo pistar-mmdvmhshatflash hs_hat" from the terminal by entering the section - Expert Editors - SSH Access, at this point ...