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OLIMEX / NB-IoT

NB-IoT is LPWAN technology for IoT
GNU General Public License v3.0
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BC66 Unable to communicate with Linux over USB #2

Closed spit4520 closed 3 years ago

spit4520 commented 4 years ago

Hello,

I am unable to connect with the device over usb and perform backup's or flash. I just bought the device and I got it today.

Please see the related ticket: https://github.com/Wiz-IO/Arduino-Quectel-BC66/issues/16

Thanks

DanKoloff commented 4 years ago

Did you try holding PWR_KEY1 and/or RST_KEY to turn it on?

Also check here: https://github.com/OLIMEX/NB-IoT/blob/master/SOFTWARE/AT_example

spit4520 commented 4 years ago

Yes I have successfully flashed the board. I am trying to now restore the board to a state where I can write AT commands to it (I flashed the board before setting the APN by mistake) If you have any advice please advise

see related issue: https://github.com/Wiz-IO/Arduino-Quectel-BC66/issues/16

spit4520 commented 4 years ago

Hello!

I have an update to the issue. I have been speaking with Georgi Angelov with his PlatformIO implementation of your board. Apparently on windows there is a second COM created that is for direct AT commands to the modem, but on Unix like devices with the CM34X driver I am only able to see /dev/ttyUSB0 and that is the serial/debugging interface NOT the AT command interface. He suggested I contact you directly for support on the Linux/MacOS implementation of the driver. I will road map the process for the software stack and add it into the Wiki so this issue is hopefully resolved in the future :)

Let me know what the next steps would be!

Scott

DanKoloff commented 4 years ago

Scott, we are writing a short guide on how to restore AT firmware. Should be done later today.

Yet, about the driver and the second serial interface, I believe it is not possible to get two interfaces via a driver update. CH340T has one serial interface, single-channel. You are probably comparing our design with boards that have dual-channel serial converters, which might have the option for two serial interfaces.

DanKoloff commented 4 years ago

Try this: https://github.com/OLIMEX/NB-IoT/tree/master/SOFTWARE/AT_restore_tool