Sunday, May 26, 2019

Remote uplodad and debug

Maybe you have similar setup at home as me. That is you have your OHS gateway close in some storage room along with your home server. I have it, my network panel, my small backup/sharing server (running excellent Open Media Vault), and my OHS gateway sit close to each other. And my desk computer is down one floor. It is rather inconvenient to push upgrades to gateway, one would have to put the code into laptop, go upstairs, take a chair and plug the FTDI programmer in. Each time you make some changes in code. So I have searched and found rather nice solution to this.

I use remote serial over TCP network. My server runs basically a Debian fork and after small search and couple of tries I found a program called socat. Socat can take physical /dev/tty* device and stream it over TCP. My example:

socat tcp-l:1234,reuseaddr,fork file:/dev/ttyUSB0,nonblock,raw,echo=0,waitlock=/var/run/tty,b115200

This above creates a stream of /dev/ttyUSB0 to TCP port 1234.

On the other side there is not much to install or setup, just use avrdude command line. Only thing you need to do in Arduino IDE is to select Sketch->Export compiled binary, this will place two hex files in you sketch folder. Then using avrdude command push the hex to created network serial port like this:

avrdude -p m1284p -c arduino -P net: -Uflash:w:main_board.ino.with_bootloader.standard.hex 
Where net: is target machine virtual network serial port, and other parameters represents Atmega1284p configuration with Arduino bootloader. Only one warning is issued by avrdue:

ioctl("TIOCMGET"): Inappropriate ioctl for device 

But it can be safely ignored. And this is it. Happy programming!

Friday, May 3, 2019

Updates in

This update is rather small and concentrates only on users having problems with false alarm of AC disruption on PSC-35A switching power supply.

If your PSC-35A or PSC-60A is repeatedly reporting AC On and Off alarms in OHS Log, then you should definitely go for the update. It adds kind of oversampling of AC_OFF pin, and also introduces 60 seconds delay when On/Off alert is issued.

As it is only minor version update configuration of you GW will remain as is.

Purpose of it, is to overcome the short, but frequent pulses of logical 1 to AC_OFF signal even when it supposed to be 0. This is caused by some logic inside the PSU.

If you still experience any issues with this PSU, let me know, best to use forum.

Firmware is pre-compiled in firmware section.