TIVAWare USB rx signal from PC

Hello Calvin,

In TivaWare documentation there is the USB Library User Guide SW-TM4C-USBL-UG-2.1.0.12573.pdf

I would suggest a read of the same as well.

Regards

Amit

hi amit

thank for the fast response. for the above condition, which i i suppose to be used, host or device. as i know i2c there is master and slave. but in USB there is host and devices. currently i confused between 2. if i use uC to control the LED light, m i suppose to read the microcontroller as device or host?

i P/S i am jusst first time developing the USB device. that is why i confused

thank and regard

C. Roger

Hello Calvin,

You can use the uC as a output device.

Regards

Amit

Hi Amit

thank for the reply, mind to ask u one question, since my GUI only able to detect COM port of the USB device, which detected on stellaris virtual serial port, and i have pump in and modified the USB dev bulk, during this section, we can only use the software provided by TI which is usb bulk example, and it needed to become generic bulk device (without com port). if i would like to convert the generic bulk device to become an COM port, is there posible to do?

Hello Calvin,

I may not have the complete answer that you may be looking for. The usb_bulk example along with the Windows Project can be used to implement a generic bulk device. However based on the requirement you have presented, you can start using the COM port over USB to control the LED and then develop the necessary windows application to do the same first with COM port and then w/o it.

I know for sure cb1/Petrei/Kel and others would definitely have more info.

Regards

Amit

hi amit

thank, hope you can loop them in if possible

You'll need the example usb_dev_serial, which is an Virtual COM port example for TIVA C devices. With this example, your TM4C USB port will act as a serial COM port on your PC.

hi marc

i have tried your way which is using tiva virtual COM port which is as same as using in ICDI and devices. but when i connect to GUI, no signal been processed during sending an A to there. if i can get the COM port number for bulk USB via device manager, i think all shud be solve

thank

C. Roger

Hello Calvin,

I have the EK-TM4C123 ICDI as COM15.

I ran the usb_dev_serial and my PC popped up unknown USB Device. So I did a driver update by pointing it to my TIVAWare Installation for drivers (dll) and then it showed TivaWare USB Serial Port

Regards

Amit

i have saw that after i put in usb dev serial, it show com port, well, is there anyway to combine both serial and bulk into one?

where shall i start?

Hello Calvin

It is possible to do so by using different endpoints on the controller. However I haven't used the same as for most applications in TivaWare we use a two endpoints (one for IN and second one for OUT). In the application you need to build, you would need more than 2 endpoints.

Regards

Amit