Hi, It seems you want to use USB to emulate a serial COM port for sending AT commands. Is that correct? The existing USB library support USB CDC class. I will suggest you take a look at the example at C:\ti\TivaWare_C_Series-2.2.0.295\examples\boards\ek-tm4c1294xl\usb_dev_cdcserial. This example turns the EK-TM4C1294XL LaunchPad into a single port USB CDC device when connected to a USB host system. The example supports the USB Communication Device Class, Abstract Control Model by interacting with the USB host via a virtual COM port. I strongly suggest you run the example as-is to get a feel for it before you modify it to add your AT command specific code.
↧