Re: [oc] Fw: UART

[Ganesh Venkataraman <gxv@cypress.com>]

Dear Lichen Wang,
 I designed a UART abt a year ago. It was compatible with 16550.
1. It does look for a transition (either 1 to 0 or a 0 to 1, I don't
remember) for start bit.
2. Why do you need an IrDA on a UART ?
Regards,
Ganesh

Lichen Wang wrote:

> Hi, I am not experienced in anything. But I can work on almost
> anything. Can I be of any help to your UART project? To be more
> specific, I am 65 years young, majored in High Energy Physics,
> programmed in assembly, C, and Pascal. Do not know BASIC but wrote a
> BASIC Interpreter for Intel 8080 in 1976, co-founded a robot arm
> company (called MicRobot) in 1980. I use microcontrollers a lot and
> started to look at VHDL last week. About UART, I have two questions:
> (1) How does you UART recover from a framing error? I thing the
> 16450/16550 is not as good as the mechanical one in the good old
> Teletype. 16450/16550 will treat any active level as the next start
> bit while the old Teletype will look for a inactive to active
> transition as the start bit. (2) Will you consider including an IrDA
> encoder/decoder in your UART? IrDA stands for Infrared Data
> Association. IrDA standard is now used in most Laptops, PDAs, etc.
> Regards, Lichen Wang

--
"Great spirits have always found violent opposition
 from mediocre minds. The latter cannot understand it
 when a man does not thoughtlessly submit to hereditary
 prejudices but honestly and courageously uses his
 intelligence." - Albert Einstein


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