[dorkbotpdx-blabber] another chip-level question ...

[Fred Smith]

>so i'm asking: what do you do when you want your arduino
>to have more serial ports?

Have you looked at this?

"In this tutorial you will learn how to implement Asynchronous serial
communication on the Arduino in software to communicate with other
serial devices. Using software serial allows you to create a serial
connection on any of the digital i/o pins on the Arduino. This should
be used when multiple serial connections are necessary."

http://www.arduino.cc/en/Tutorial/SoftwareSerial


On Thu, May 14, 2009 at 3:54 PM, Mykle Hansen <mykle at mykle.com> wrote:
> hi again,
>
> for this new speedvest+plus+weirdness design i'm making, i
> plan to have an arduino talking to several different chips.
> my arduino only has one UART, and i have two devices that
> want to talk to it -- one supertex chip that wants to read
> out a bit pattern, and one GPS unit that wants to write
> various location data at 4800 baud.  also, i would love to
> be able to maintain a serial connection to the computer
> for debug output while i develop this thing.
>
> so i'm asking: what do you do when you want your arduino
> to have more serial ports?  is there a strategy for sharing
> one UART between many devices?  is there a sub-chip that
> can MUX several serial conversations into one?  is there
> a way to repurpose the SPI or TW units in the ATmega168
> into standard serial ports?   what would dorkbot do?
>
> my fallback is to use bit-bashing to send the output,
> use the UART for the input, and reduce the debugging
> to a vocabulary of "the green LED means it's working."
>
> thanks for your help.  i promise that if i get anything
> blinking before i leave town for the Faire, i will bring
> it to the meeting or send a picture.
>
> -mykle-
> ---
> HELP!  A Bear is Eating Me!
> http://helpabeariseatingme.com
>
> _______________________________________________
> dorkbotpdx-blabber mailing list
> dorkbotpdx-blabber at dorkbot.org
> http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber
>