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WildernessLabs / Meadow_Issues

Public repo for bugs and issues with Meadow
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Driver for UBLOX SARA R4 Modem #434

Open alaindlk opened 10 months ago

alaindlk commented 10 months ago

Hello I've previously used a sparkfun SARA R4 shield using the UBLOX LTE Modem.

The modem works on 1.8V TTL but the sparkfun shield includes two level shifters 5V -> 3.3v and 3.3v to 1.8v feeded by the 5V rail. It uses Pin 6 and 7 on the shield to Reset (10 sec LOW Value) and Start (3 SEC LOW value) the modem. The UART speedport has to be manually configured using the AT command AT+IPR command. On restart it uses the previously set speed .

The remainder seems to be the traditional At commands used in cellular modems. You'll find in attachement the AT command file used in the sara R4 SARA-R4___SARA-N4_AT_Commands_Manual.pdf

bryancostanich commented 10 months ago

@alaindlk thanks for the driver request! We're clearing out the last of our priority-0 bugs, but we'll get on this right after. Looks like this is the modem board yeah? We'll get them purchased ASAP.

In the meantime, if you need immediate cellular support, I recommend picking up one of the modems listed on our cellular guide.

Thanks!

alaindlk commented 10 months ago

@bryancostanich Yes that's the board I'm using... I've been looking for the code file in the meadow.core library were you setup the hardware bits for the Quectel Modems but without success... Is it possible to show me were to look for the file to consider making a temporary version hooked up with your F7CellNetworkAdapter.cs