topic Re: auto baudrate in Kinetis Microcontrollers

auto baudrate

Dealerz — Wed, 07 Aug 2013 01:04:34 GMT

Does anybody know how to perform an Auto Baudrate on a K60 chip for a UART? I've done this before on a few other chips, usually ones that have an input capture pin, but I'm not aware of a K60 having such a pin so I was wondering if anybody has a different way of doing this when a basic sync byte is sent on the UART, 0x55.

Thanks in advance.

Re: auto baudrate

Paul_Tian — Wed, 07 Aug 2013 02:58:09 GMT

Hi, Jason

Agree, I think the easy way is to use an input capture channel to detect baud rate then change UART to match.

Best Regards

Paul

Re: auto baudrate

anthony_huereca — Wed, 07 Aug 2013 21:16:26 GMT

Hi Jason,

Kinetis has input capture capabilities built into the FlexTimer (FTM) module. There are multiple pins available, including some already muxed with UART pins.

-Anthony

Re: auto baudrate

Dealerz — Sun, 11 Aug 2013 17:19:35 GMT

Are their any code example showing an auto baud rate detecting using the Kinetis? Would make my job a lot easier.

Re: auto baudrate

anthony_huereca — Mon, 12 Aug 2013 17:42:31 GMT

Hi Jason,

Unfortunately I'm not aware of any examples already created. Perhaps someone can respond with something they've created, or you can share what you come up with.

-Anthony