Forum: µC & Digital Electronics FT245 and Break Condition

von A. W. (uracolix)

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I want to use the USART Break Condition (a.k.a out of band signalling)
to switch a microcontroller into a specific operation mode.


For a normal USART this condition is signaled in the USART status 
register of the micro controller.

But how is the Break Condition handled by a FT245BM and the virtual com 
port driver ? How can I detect with a micro, that the PC did send a 
Break ?

Any hints and workarounds are appreciated, Axel

von hipos124 (Guest)

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Hi everyone.I'm new to the forum and wanted to say hello.

von A. W. (uracolix)

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After reading the data sheet up and down I came to the conclusion that 
the FT245 ignors a break condition as well as the data rate settings :-(

An additional status register would be nice ... just for the case a FTDI 
designer reads this :-) How aboout asserting the read line first and the 
write line while read is asserted. This state could display the status 
register at the data bus.

@hipos124: saying hello with a little bit of contents is probably not 
regarded as bad style. With contents I don't mean your CV but something 
that is related to the topic of the thread.


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