Today I found an error in BI7JTA MMDVM modem. And it is a very strange problem, as previously everything was working normal.
Symptoms:
- MMDVM not connected to DMR server
- Pi-Star does not see MMDVM firmware, mmdvmcal not available
- DMR & DMR Net cells are red (normally green)
- Radio info is empty
- Logs say: Unable to read the firmware version after six attempts
Error:
Correct apearience:
So what caused the problem? I know only the action which caused the problem, I do not know the problem deeply. So it happened when I decided to use a new SD card, as the old one was refurbished and in the past gave me some hard time. So I installed the new pi-star system, when I used a procedure from https://www.bi7jta.org/wiki/index.php?title=Main_Page#Install_NextionDriver_for_Model_8.2FModel_10 to install the Nextion driver. And it completely ruined the MMDVM, it just stopped working. Before anybody says anything, probably this is something to do with the new pi-star updates. Also I am aware about a problem with a need of double installation for the Nextion driver. Few months ago I had to install the Nextion driver, then it did not work correctly (but it did not stop pi-star from working correctly). SO the know solution was to uninstall the driver and install again. This time it just simply not working at all, despite the fact I reinstalled it few times. So the solution to get the pi-star working again was to uninstall the Nextion driver completely. Unfortunately the display is not working anymore.
Procedure of uninstalling the Nextion driver:
rpi-rw; sudo rm -rf /usr/local/bin/NextionDriver; cd /home/pi-star; sudo rm -f on7lds-NextionDriverInstaller-Offline.zip*; sudo rm -rf NextionDriver; sudo rm -rf NextionDriverInstaller;
Now to turn off and turn back on raspberry pi with pi-star and it should start working correctly.