I am trying to download applications to Fasttrack Supreme using HyperTerminal and XModem protocol.
The Hello_world binary works (maybe because of it’s small size of < 10 KBs), but larger binaries
(Open-AT samples pre-/self- compiled) throw “BAD CHECKSUM” to the terminal.
Anyone else who has experienced something like that?
I had read in this board about DWLWin.exe which seems not to be included on my SDK-CD. I already notified my vendor,
but he has not answered until now. Maybe that could “bridge” my problem, but it would not solve it, because XModem upload
should work anyway.
BAD CHECKSUM was the result of handing over the physical COM-port of my unix system via rdp to my virtual machine.
I do not know if it would work with connecting the device directly to the VM host computer and enabling access for the VM.
So this does not work with app-downloads (but it does with normal communication):
I checked the diagram in the preview and yes that is how i tried to communicate with the modem.
1.) the modem was serial linked to my unix system
2.) the remote desktop connection passed “/dev/ttyS0” link to the VM (hosted by another physical host)
3.) hardware flowcontrol was selected and the COM port was opened in the VM
4.) sending AT-commands and receiving answers did work
I never tested passing a com-port via rdp and using hardware flowcontrol, before - but should work.
(my serial tester [between modem and host] determined that all serial channels are used properly)