Z-UNO + RS232

Discussion about Z-Uno product. Visit http://z-uno.z-wave.me for more details.
petergebruers
Posts: 220
Joined: 26 Jul 2015 17:29

Re: Z-UNO + RS232

Post by petergebruers » 17 May 2018 20:07

Bitrate between 9600 and 115200?

Maybe try "coolterm" instead of putty?

If you connect the DB 9 to your computer, then do not connect TX and RX to Z-Uno UART (only 3V3 and GND) but connect the converter's RX to the converter's TX, does the terminal echo what you type?

petergebruers
Posts: 220
Joined: 26 Jul 2015 17:29

Re: Z-UNO + RS232

Post by petergebruers » 17 May 2018 20:08

We were typing at the same time.. UNO cannot do less than 9600 bps.

There is another topic about bit-banging... Give me a second...

petergebruers
Posts: 220
Joined: 26 Jul 2015 17:29

Re: Z-UNO + RS232

Post by petergebruers » 17 May 2018 20:17

Your problem finds confirmation (but no solution) here:

https://forum.z-wave.me/viewtopic.php?f=3427&t=26015

This guy tried or tries to do "parity" by bit-banging and finds out... The Z-Uno runs faster or slower depending on its opwer supply:

https://forum.z-wave.me/viewtopic.php?f=3427&t=26145

This guys says he "ordered an SPI to UART bridge" but he does not mention if it works...

https://forum.z-wave.me/viewtopic.php?f=3427&t=26130

ondrej_bajer
Posts: 33
Joined: 17 May 2018 09:55

Re: Z-UNO + RS232

Post by ondrej_bajer » 17 May 2018 21:47

For a shame, adding another bridge is too complex for me.
A change in HW UART to support 2400 baud would be perfect for me, even if I had to buy a new HW version of Z-UNO.

Regarding Software Serial, I know that library from Arduino, but it's unportable, as it uses too much of ARK-specific code.

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PoltoS
Posts: 4268
Joined: 26 Jan 2011 19:36

Re: Z-UNO + RS232

Post by PoltoS » 19 May 2018 01:29

We plan to make SoftwareUART soon. Please stay tuned

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PoltoS
Posts: 4268
Joined: 26 Jan 2011 19:36

Re: Z-UNO + RS232

Post by PoltoS » 22 Jun 2018 01:55


ondrej_bajer
Posts: 33
Joined: 17 May 2018 09:55

Re: Z-UNO + RS232

Post by ondrej_bajer » 22 Jun 2018 14:30

Hi guys,
I tried that new SoftwareSerial library with 2400baud and it works GREAT :)
Thanks!

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