Serial for a Sony Projector
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Posts: 46,084
Howdy all,
I have a current project that I need some advice on. I have a number of
Sony data projectors I need to control remotely by sending a series of
hexadecimal codes via serial port. Unfortunately Sony decided to make the
serial port a 38400 baud 8 E 1 type (everyone else stays at 9600 baud 8 N 1
which is easy to do with a BS2). I bought a BS2P thinking it would give me
the speed I need but didn't catch the fine print about Serout command
apparently not supporting 8 E 1 mode directly and the shemes presented
doing it in software make me wonder if it would achieve the 38400 baud rate
(these Sony's seem very particular about their serial ports).
I have no problem using extra IC's to tackle this but was looking for some
input on this problem. For the record I am an electronic tech (35+ years)
so I can handle circuits readily. However my programming skills could be
better, tho' my first project controlling an Epson projector was a piece of
cake. My main goal is to make an easy and foolproof system for input
selection,video mute,and power switching via serial port. I work in a
university environment and it is best to keep it easy as pie. Thanx in
adavance. matt
Matt Seniff
Principle Electronic Technician
Classroom Technology Support Services
Illinois State University
PH 309-438-7734
FAX 309-438-3623
I have a current project that I need some advice on. I have a number of
Sony data projectors I need to control remotely by sending a series of
hexadecimal codes via serial port. Unfortunately Sony decided to make the
serial port a 38400 baud 8 E 1 type (everyone else stays at 9600 baud 8 N 1
which is easy to do with a BS2). I bought a BS2P thinking it would give me
the speed I need but didn't catch the fine print about Serout command
apparently not supporting 8 E 1 mode directly and the shemes presented
doing it in software make me wonder if it would achieve the 38400 baud rate
(these Sony's seem very particular about their serial ports).
I have no problem using extra IC's to tackle this but was looking for some
input on this problem. For the record I am an electronic tech (35+ years)
so I can handle circuits readily. However my programming skills could be
better, tho' my first project controlling an Epson projector was a piece of
cake. My main goal is to make an easy and foolproof system for input
selection,video mute,and power switching via serial port. I work in a
university environment and it is best to keep it easy as pie. Thanx in
adavance. matt
Matt Seniff
Principle Electronic Technician
Classroom Technology Support Services
Illinois State University
PH 309-438-7734
FAX 309-438-3623
Comments
>Howdy all,
>I have a current project that I need some advice on. I have a number of
>Sony data projectors I need to control remotely by sending a series of
>hexadecimal codes via serial port. Unfortunately Sony decided to make the
>serial port a 38400 baud 8 E 1 type (everyone else stays at 9600 baud 8 N 1
>which is easy to do with a BS2). I bought a BS2P thinking it would give me
>the speed I need but didn't catch the fine print about Serout command
>apparently not supporting 8 E 1 mode directly and the shemes presented
>doing it in software make me wonder if it would achieve the 38400 baud rate
>(these Sony's seem very particular about their serial ports).
>I have no problem using extra IC's to tackle this but was looking for some
>input on this problem. For the record I am an electronic tech (35+ years)
>so I can handle circuits readily. However my programming skills could be
>better, tho' my first project controlling an Epson projector was a piece of
>cake. My main goal is to make an easy and foolproof system for input
>selection,video mute,and power switching via serial port. I work in a
>university environment and it is best to keep it easy as pie. Thanx in
>adavance. matt
Hi Matt -
Take a look at the Maxim MAX-3100 UART which should be able to produce any
baud rate, parity, etc that you may need. Although this may initially appear
as an IrDA section, read further along for help in programming the MAX-3100:
http://www.emesystems.com/BS2IrDA.htm
Regards,
Bruce Bates