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Discussion Groups | LPC2000 | LPC2000 RS232/UART broadcasting
Discussion group dedicated to the Philips LPC2000 family of ARM MCUs
LPC2000 RS232/UART broadcasting - marks1865 - Aug 19 7:03:49 2008
morning,
I've an RS232 device (PC) that I want it to be able to broadcast
messages to several ARM7 devices. It's only one way messages; I'm not
interested in having the ARM7 send back data.
After I convert the RS232 back to TTL (eg MAX232 device) on the ARM7
side, can I simply wire the MAX232 Tx pin to all ARM7 UARTS Rx pins and
have them all receive the broadcast message (ie multi drop style?)
Ok, I might need a bit of glue to connect the MAX232 device, but I
guess that depends on the RS232/TTL converter chip and its Tx fanout?
ie
[RS232 Device]--->----[RS232/TTL Converter]->-+----+----+
| | |
Rx Rx Rx
ARM7 ARM7 ARM7
cheers
Mark
------------------------------------
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
I've an RS232 device (PC) that I want it to be able to broadcast
messages to several ARM7 devices. It's only one way messages; I'm not
interested in having the ARM7 send back data.
After I convert the RS232 back to TTL (eg MAX232 device) on the ARM7
side, can I simply wire the MAX232 Tx pin to all ARM7 UARTS Rx pins and
have them all receive the broadcast message (ie multi drop style?)
Ok, I might need a bit of glue to connect the MAX232 device, but I
guess that depends on the RS232/TTL converter chip and its Tx fanout?
ie
[RS232 Device]--->----[RS232/TTL Converter]->-+----+----+
| | |
Rx Rx Rx
ARM7 ARM7 ARM7
cheers
Mark
------------------------------------
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
Re: LPC2000 RS232/UART broadcasting - 42Bastian - Aug 19 7:35:29 2008
> I've an RS232 device (PC) that I want it to be able to broadcast
> messages to several ARM7 devices. It's only one way messages; I'm not
> interested in having the ARM7 send back data.
I even made ad hoc networks on a game console (Atari Lynx if someone
remembers) like this.
> [RS232 Device]--->----[RS232/TTL Converter]->-+----+----+
> | | |
> Rx Rx Rx
> ARM7 ARM7 ARM7
--
42Bastian
Note: SPAM-only account, direct mail to bs42@...
------------------------------------
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
> messages to several ARM7 devices. It's only one way messages; I'm not
> interested in having the ARM7 send back data.
I even made ad hoc networks on a game console (Atari Lynx if someone
remembers) like this.
> [RS232 Device]--->----[RS232/TTL Converter]->-+----+----+
> | | |
> Rx Rx Rx
> ARM7 ARM7 ARM7
--
42Bastian
Note: SPAM-only account, direct mail to bs42@...
------------------------------------
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )