Suggestion Regarding USB Terminal Device Interface With MC UART

[sakibnaz]

Hi There.

I have a USB Sensor Device which I can connect to PC. By installing Driver on PC, I got Virtual COM to send Serial Command to control the Sensor Device.

Now I want to control the Sensor Device through MCU UART. Can you advise what interfacing Chip I need to use to achieve Serial Communication between Sensor USB Terminal and MCU UART?

Thanks in advance

Regards.

 

[Kurenai_ryu]

uhg!

could you post more information? like the model and number of your sensor? can you/ do you want to modify the sensor circuit? can you take photos of the instrument PCB?

if you don't want to touch the sensor, then, you need a USB Host to serial...

I suggest you to check the Vinculum series from FTDI I have used the Vinculum I in a Vdrive2, It's a somewhat generic host (mostly oriented to usb flash drives) but it can handle a CDC connection... I think you can use a Vdrive3 with the new Vinculum-II... these new line of Vinculum processors can be user-programmed, and it seems there is a an application note about a sample program to transparently transfer the data from usart to the CDC... (exactly what you need, but take in consideration that you need a programmer for this vinculum chip)

I suggest you to get a Vdrive3 and manage the CDC data by commands (or get also a V-prog and change the firmware to the transparent cdc-uart firmware)

Finally If your sensor uses a proprietary software in the PC you need to figure out the communication protocol by yourself before connecting to the Vinculum...

 

[sakibnaz]

Hi Kurenai_ryu.

Thanks for retail reply.

Right now I don't have much information about the Sensor. But I know the Sensor is FTDI based.

After having some research I also found FTDI's Vinculum-II. So my target is to use VNC2 Chip and use the FT232 Firmware.

Thanks again.

Regards.