Re: Need Advice please: microcontroller with RS-232 Output

On Fri, 4 Nov 2005 10:17:11 -0500, in sci.electronics.design "Alex"
<alex@xxxxxxxxxxxx> wrote:

>
>"martin griffith" <martingriffith@xxxxxxxxxxxxx> a écrit dans le message de
>news: kd7mm1paqvsvrst7p58i5fvu8d212v2pun@xxxxxxxxxx
>> On Thu, 3 Nov 2005 20:21:30 -0500, in sci.electronics.design "alx3d"
>> <alx3d@xxxxxxxxxxx> wrote:
>>
>>>I need some advice in designing a pushbutton interface to send commands
>>>via
>>>RS-232 port.
>>>
>>>I need to find a microcontroller that will take pushbutton inputs and send
>>>the proper commands (Sony Protocol of remote-1) via RS-232 to a digital
>>>video recorder board.
>>>
>>>Any advice on the proper microcontroller that I have to use?
>>>
>>>Thank's in advance for your help!
>>>
>>>Alex
>>>
>>>ELECTRICAL INTERFACE:
>>>- EIA RS-422
>>>
>>>DATA FORMAT :
>>>- 38.4 kbps
>>>- Asynchronus, full duplex communications
>>>- 8 data bits, odd parity, 1 stop bit.
>>>
>>>COMMAND BLOCK FORMAT
>>>---------------------------------------------------------------------------------------------------------------------
>>>| 1 byte | 1 byte | 1 byte
>>>| n-2 byte | 1 byte | 1 byte |
>>>| Bits 7-4 Bits 3-0 | |
>>>| | |
>>>|
>>>---------------------------------------------------------------------------------------------------------------------
>>>| CMD-1 | DATA | CMD-2 | DATA-1
>>> | - - - | DATA-n | CHECKSUM |
>>>| | COUNT | |
>>>| | |
>>>|
>>>---------------------------------------------------------------------------------------------------------------------
>>>
>> I did this in the early 90's with an 8052, no problems. we even did 2
>> machine frame accurate video editing, by multiplexing the serial port.
>>
>>
>>
>> martin
>
>What is a 8052 ?
>
It is a 30year old generic family, orginally from Intel, look on
Atmels' site for 8 bit micro's, there are manyvariation, and it
continues to be well supported. Try the demo of theRaisonance C.
(www.amrai.com) compiler
People say that there are more 8051/2 in the world than any other
micro.


martin
.

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