Comments for Highfield Tales

Comment on A simple watchdog for the Netduino by Mario Vernari

Mario Vernari — Tue, 21 May 2013 05:32:32 +0000

You are right, however I consider to generate a very tight pulse in order to minimize the possibility to get hang in such a context.
I will modify the circuit with your suggestion, as well as for the Netduino 2.
Thanks and cheers

Comment on A simple watchdog for the Netduino by René

René — Tue, 21 May 2013 05:22:57 +0000

Sorry capacitor not condensator

Comment on A simple watchdog for the Netduino by René

René — Tue, 21 May 2013 05:21:29 +0000

This solution will not work when the MCU has crashed in a way, in which the output Portpin connected to MR stays high forever. Only pulses should reset the counter not a permanent high signal. If you use a decoupling condensator in the line together with 2 resistors to ground it should work also in that case. 100nf with 2x100k on both ends of the cap to ground.

Comment on Very fast SPI-to-parallel interface for Netduino by Mario Vernari

Mario Vernari — Sat, 04 May 2013 03:37:26 +0000

Hello Pankaj. It’s feature to be implemented, but I didn’t think to add such a functionality.
That’s because it’s something specific of that chip, and I want to keep the library abstract.
If you have some suggestion on how to expose the cursor and the blinking capabilities, we might work on.
Cheers

Comment on Very fast SPI-to-parallel interface for Netduino by Pankaj

Pankaj — Fri, 03 May 2013 16:34:03 +0000

How do you add the functionality for cursor display and blink?

-Pankaj

Comment on A simple watchdog for the Netduino by Mario Vernari

Mario Vernari — Tue, 23 Apr 2013 03:24:01 +0000

No, I still haven’t tried because I’m pretty busy. However, I believe it should be working fine: at most, it need a capacitor for holding the missing supply during the power cycle.
If you have more time than me, feel free to try and I’ll assist you, in case.
Cheers

Comment on A simple watchdog for the Netduino by JP van Mackelenbergh

JP van Mackelenbergh — Mon, 22 Apr 2013 18:31:32 +0000

Hello Mario, I ran into your solution and I would like to (also) use it on the Netduino Plus 2. Did you try that in the meantime ?

Comment on Modbus-TCP library for Windows Phone by Mario Vernari

Mario Vernari — Fri, 19 Apr 2013 04:41:02 +0000

Totally agree, although the TCP/IP way is getting even more used.
Anyway, you should have a peek at the RTU version of the library: http://highfieldtales.wordpress.com/2012/04/09/modbus-rtu-added-to-the-cet-open-toolbox/

Comment on Modbus-TCP library for Windows Phone by matthew

matthew — Thu, 18 Apr 2013 17:11:22 +0000

Ah I see now, in my mind you would not leverage the usb cable for ip communication, you would leverage to talk serial, which is what it is natively best at

My interest would be in that most devices that speak modbus don’t have wireless cards on them.

Comment on Modbus-TCP library for Windows Phone by Mario Vernari

Mario Vernari — Thu, 18 Apr 2013 16:01:52 +0000

All my experiments were made over the normal Wi-fi. Honestly, I never tried over the cellular network, but it should working: the primary problem is the location of the IPs, which are both private.
I don’t know any way to leverage the usb cable for tcp/ip communication.
Cheers