 Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me. |
Forum Index : Microcontroller and PC projects : Multiple Serial Ports
| Author | Message | ||||
marcwolf Senior Member  Joined: 08/06/2009 Location: AustraliaPosts: 119 |
Hi Folks. I do a low of experimenting with the PicAxe and one of the handy things there is that you can make multiple serial ports. Is there a way to make more than 2 serial ports with the Maximate? Often you might have several additional boards like a VrBot, GPS, Sonar, etc and very quickly run out of Serial ports. Many thanks Dave Coding Coding Coding.. Keep those keyboards coding.. RAW CODE!!!!! |
||||
| rhamer Senior Member Joined: 06/06/2011 Location: AustraliaPosts: 174 |
No the standard Maximite and its clones only have 2 serial ports (rs232) generated in software like the PicAxe. The DuinoMite has or is about to have, more (I cant remember the exact quantity but someone will chime in) that are a combination of Hardware based (i.e. supported in the Pic32) and software like the standard Maximite. Regards Rohan Rohan Hamer HAMFIELD Software & Hardware Solutions Makers of the Maximite Expander. http://www.hamfield.com.au |
||||
graynomad Senior Member Joined: 21/07/2010 Location: AustraliaPosts: 122 |
[quote]generated in software like the PicAxe. [/quote] So it could have more, it just hasn't been done. BTW, how come there's no [ quote] button? Or am I blind? _____ Rob Rob Gray, AKA the Graynomad, www.robgray.com |
||||
bigmik Guru  Joined: 20/06/2011 Location: AustraliaPosts: 2914 |
[quote] BTW, how come there's no [ quote] button? Or am I blind? _____ Rob On Right hand side of screen.. Mick Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<< |
||||
| graynomad Senior Member Joined: 21/07/2010 Location: AustraliaPosts: 122 |
Yeah but that quotes the entire post, I guess you can cut what you don't want but on every other forum I use you can quote any old text. Eg [quote]Maybe I want to quote from a data sheet[/quote] ______ Rob Rob Gray, AKA the Graynomad, www.robgray.com |
||||
| rhamer Senior Member Joined: 06/06/2011 Location: AustraliaPosts: 174 |
Unfortunately it's not quite that easy. In theory your right, but there are some fundamental differences in how a PicAxe is programmed compared to the Maximite. With micros like the PicAxe and the basic stamp, some of the programming work is done before it is loaded into the chip. This means the chip only has to execute clean tokenised code. With the Maximite because it is designed to be a stand alone device that requires no compiler, everything has to be done on the chip, including syntax checking and of course servicing the keyboard and running the video. So as you can see, although the pic32 is a very powerfull chip, it has a lot more to do than a PicAxe. So as with all things there is a limit. software based uarts take processing time, and so there has to be a limit of some sort. Cheers Rohan Rohan Hamer HAMFIELD Software & Hardware Solutions Makers of the Maximite Expander. http://www.hamfield.com.au |
||||
| Olimex Senior Member Joined: 02/10/2011 Location: BulgariaPosts: 226 |
MaxiMite have COM1: and COM2: which are up to 19200 bps made with bit-bang COM1: have also RTS CTS flow control DuinoMite keeps COM1: and COM2: implemented same way as MaxiMite, but also have COM3: and COM4:, COM3: go to the UEXT and can work up to 8 000 000 bps at least looking in the source, but never tried it over 115200 bps, COM4: go to the RS232 connector with RS232 driver. |
||||
 Print this page |
