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LPC54608 USART 9 bit mode

Question asked by scott lawson on Aug 29, 2018
Latest reply on Sep 7, 2018 by Victor Jimenez

Is there anyway to put the USART into 9 bit data mode and then be able to set the 9th bit?  We are trying to communicate with an external power supply over an RS-485 interface and the controller on the power supply uses a 9 bit data frame consisting of 8 bits of data with an additional framing bit.  The first byte always has a 1 for the framing bit, all additional bytes have a 0.  

 

I'm just not sure how to set this 9th bit on a per byte basis.

 

Anyone managed to do this with this device?

 

Thanks for your help

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