BREAK signal transmission on EZ-USB FX3 USB-UART bridge

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
Taguchi
Level 1
Level 1
5 sign-ins First reply posted First question asked

Hi,

I am testing UART communication operation with the sample USB-UART bridge (cyfxusbuart) that comes with the EZ-USB FX3 SDK 1.3.4.

Using Tera Term on a Windows PC, I was able to send and receive ASCII code without any problems.

However, the BREAK signal cannot be transmitted.

Similarly, using Tera Term, the BREAK signal can be transmitted with the FTDI FT4232H.

Therefore, I think that the setting of TeraTerm is not a problem.

Could you please teach me how to send a BREAK signal over the FX3's USB-UART bridge?

 

Best Regards,

Taguchi

 

 

0 Likes
1 Solution
AliAsgar
Moderator
Moderator
Moderator
1000 replies posted 250 solutions authored 750 replies posted

Hi Taguchi,

BREAK command comes with a bmRequestType 21h and bRequest 23h. Kindly handle the parsing of break character to the UART lines in the usbuart firmware in the FX3 SDK.

Best Regards,
AliAsgar

View solution in original post

0 Likes
4 Replies