BiNa2605
Full Member level 3
![Full Member level 3](/styles/images/ranks/elevel3.gif)
I am studying UHF RFID and I want to send data from my PC to RFID reader and receive the value data through USB. In the RFID module has MCU C8051F430 connected to USB block.
![USB AS3992.PNG USB AS3992.PNG](https://www.edaboard.com/data/attachments/56/56774-a03dd01a191ef1c4eb08046254e0c612.jpg)
I built a C# interface and I connected to virtual USB on Proteus and it worked well. I can sent data to PIC18F4550 and receive data from it.
That is my simulation file.
Unfortunately, when I connect to RFID reader where C8051F430 is a MCU. Although my firmware can detect the device but I cannot send any data to it. At that time I still don't know why.
I am a newbie please help me out
![USB AS3992.PNG USB AS3992.PNG](https://www.edaboard.com/data/attachments/56/56774-a03dd01a191ef1c4eb08046254e0c612.jpg)
I built a C# interface and I connected to virtual USB on Proteus and it worked well. I can sent data to PIC18F4550 and receive data from it.
That is my simulation file.
Unfortunately, when I connect to RFID reader where C8051F430 is a MCU. Although my firmware can detect the device but I cannot send any data to it. At that time I still don't know why.
I am a newbie please help me out