I have the ATT Cellular IoT Starter Kit, which includes the M14A2A celluar shield and the FRDM-K64F microcontroller board. There was success with regards to using the celluar modem with the microcontroller. However, I wish to M14A2A celluar shield without the microcontroller. The goal is to directly send data through the modem by connecting it by USB to a Raspberry Pi.
My USB and power connections on the celluar shield are correct, however neither Linux nor Windows are successully recognizing the celluar shield. Windows will just detect the shield in Device Manager as WNC M14A2A with a message showing that "the drivers are not installed". For Linux, the modem just shows up as TTYACM0 and am unable to communicate with it using "cu".
How can I use the celluar shield directly by a PC through a USB connection? Are there drivers for linux or Windows? I had scoured the official documents for the hardware included with the ATT Cellular IoT Starter Kit, but there is pretty much zero information in how to use the celluar shield directly without the FRDM-K64F microcontroller board.