Dixon's Content
There have been 32 items by Dixon (Search limited from 17-April 23)
#13786 .NET Micro Framework minimun requirements
Posted by
on 30 May 2011 - 09:12 PM
in
Netduino 2 (and Netduino 1)
Hi,
Netduino specs says it has:
Code Storage: 128 KB
● RAM: 60 KB
but the minimun specs for .net micro framework are Minimum of 256KB RAM and 512K Flash/ROM (http://msdn.microsof...mework/bb278106). How is it possible it to work?
#13802 .NET Micro Framework minimun requirements
Posted by
on 31 May 2011 - 06:25 AM
in
Netduino 2 (and Netduino 1)
Hi Chris,
Thank you, I'm very excited with the Netduino, even though I'm looking forward to have a Netduino Plus 
Yesterday I was looking for more documentation on the .NET MF arquitecture and Netduino SDK, and found the page I posted the link that says the minimun specs for .NET MF is 256KB of RAM, where it seems the Netduino is only requiring 68KB of RAM for operating. Is it because it only load a part of the .NET MF? or am I missing something?
Regards,
Dixon
Yesterday I was looking for more documentation on the .NET MF arquitecture and Netduino SDK, and found the page I posted the link that says the minimun specs for .NET MF is 256KB of RAM, where it seems the Netduino is only requiring 68KB of RAM for operating. Is it because it only load a part of the .NET MF? or am I missing something?
Regards,
Dixon
#13815 .NET Micro Framework minimun requirements
Posted by
on 31 May 2011 - 11:47 AM
in
Netduino 2 (and Netduino 1)
WPF is available on .NET MF? Wow!!! I'm impressed.
I don't find too much documentation on .NET MF but seems to be very interesting. I did a HelloWorld for Netduino in just 10 mins, able to comunicate trough the serial port, responding to interrupts, and using multiple threads. It's very very easy!
I'm curious how do you configure/know what parts of .NET MF are included in the build for Netduino and what doesn't. Where can I find more documentation/info?
#13847 Netduino size. Where do I find this in Visual Studio?
Posted by
on 01 June 2011 - 06:30 AM
in
Netduino 2 (and Netduino 1)
Hi Chris
But how? how do you control what parts of .NET MF are included and what parts not, and how do you know how big is the .NET MF being loaded (i.e. total size - fre size - our app size)
In theory .NET Framework requires 256MB of RAM, what is much more than the actual Netduino RAM size. It seems it's because the loaded .NET MF is stripped down, removing WPF support among other things. How can we know what it is included and what not?
Removing USB is pretty easy (and in fact, you can just copy most of the changes from the Netduino Mini BSP to the Netduino BSP and recompile).
But how? how do you control what parts of .NET MF are included and what parts not, and how do you know how big is the .NET MF being loaded (i.e. total size - fre size - our app size)
In theory .NET Framework requires 256MB of RAM, what is much more than the actual Netduino RAM size. It seems it's because the loaded .NET MF is stripped down, removing WPF support among other things. How can we know what it is included and what not?
#13930 .NET Micro Framework Distribution Fee
Posted by
on 03 June 2011 - 08:00 AM
in
General Discussion
I read that .NET Micro Framework requires a distribution agreement and per-device licensing fee, which varies by exptected volume. Do you know roughly how much is this fee?
If we use netduino mini boards for a comertial project, is this fee already paid by Secret Labs? or are we supposed to contact Microsoft to arrange for a distribution agreement?
#13931 Netduino size. Where do I find this in Visual Studio?
Posted by
on 03 June 2011 - 08:13 AM
in
Netduino 2 (and Netduino 1)
There is SolutionWizard application in the .NET Micro Framework Porting Kit to select modules/features you want to be included in the firmware. Regarding the firmware size and memory organization, please refer to "Laying Out Memory on .NET Micro Framework Devices" topic in the Porting Kit documentation, which describes it in great detail.
Hi CW2,
Thanks a lot for your answer, everything is clearer now.
#13984 .NET Micro Framework Distribution Fee
Posted by
on 06 June 2011 - 06:14 AM
in
General Discussion
It turns out that the white paper I was reading is from 2007. Thanks for your clarification.
Now call me ingenuous, but why Microsoft did it so? What they earn with this, as the tool chain is also free (express ed). Why they freed such a marvelous platform?
And why is Secret Labs maintaining it?
#14271 Netduino send ICMP Ping ?
Posted by
on 13 June 2011 - 08:07 AM
in
Netduino Plus 2 (and Netduino Plus 1)
Did you ever work this out?
I'm thinking to ping my gateway to determine if my network on the netduino has died, or if the internet is down. If the network on the Netduino is to blame, I have to request a reboot. But I can't have the Netduino rebooting every minute while the internet is down.
How do you reboot the netduino by code?
#14276 Save Custom Settings
Posted by
on 13 June 2011 - 11:24 AM
in
General Discussion
There's a new feature (SimpleStorage) in .NET MF 4.2 that we're looking at leveraging for this. .NET MF 4.2 will be in beta soon, and then we can start testing the implementation.
Hi Chris,
.NET MF 4.2 is available now. Does it include this capability? If so, how is it possible to use it? For my vote, with a hundred of bytes would be more than enough, for bigger data external EEPROM or SD would be justified.
#14310 Save Custom Settings
Posted by
on 14 June 2011 - 06:37 AM
in
General Discussion
Our first integration pieces are ADC and PWM (for the new object models) and misc. bugfixes--but this is the next item on the list after those. In the meantime, you can certainly store data on an SD card. [Also, the in-flash data storage will be for things like settings that don't change very often--not for constantly writing data.]
Hi Chris,
I'm aware of the flash aging problem, I just need to write a static setting (around 10 bytes) that will be seldom modified with the config of the application, and that's why SD or EEPROM is an overkill. I don't mind if it's Simple Storage, EWR, or ADO.NET against and internal instance of SQL Server 2010 Micro Edition, I don't care if the performance is good or not, of if it requires 20K of RAM, as I have a lot of it I don't use.
I know there are many people that have more resource constrained applications and might not want to consume extra RAM or FLASH for this, that's why I think the best way to approach it would be as a module using .NET MF APIs so people can choose to include it in the project, or not and use external storage.
Whatever will be OK. Is there any way to access the FLASH memory rawly? If I can take ownership of a FLASH block and rewrite it by myself it will work. I can even use two and implement a corruption-protecting algorithm that writes alternatively on both so integrity can be checked at startup, and old version of the config will always exist.
Carlos.
#14370 Netduino Plus Firmware v4.2.0 BETA 1
Posted by
on 16 June 2011 - 10:16 AM
in
Beta Firmware and Drivers
Hi,
I upgraded my N+ to 4.2, but only ER_CONFIG and ER_FLASH files. Is it neccesary to upgrade the TinyBooterDecompressor.bin as well? If so, this is only done with SAM-BA, right? What happens if the TinyBooter is not upgraded but the TinyCLR is?
As a (i think unrelated) question, I'm observing the TinyCLR is taking very long to start up some times (up to 30 secs) with and without the Eth cable connected. I'm using fixed IP. What could be wrong?
Thanks in advance,
Carlos.
#14387 Netduino Plus Firmware v4.2.0 BETA 1
Posted by
on 16 June 2011 - 05:38 PM
in
Beta Firmware and Drivers
While you're waiting for it to start, what happens if you PING your device from MFDeploy? Does it return "TinyBooter"? Nothing?
Pinging... Error: No response from device
Then TinyBooter after some time. The weak thing is that "netduinoPlus_NetduinoPlus" appears in the combo immediately after I connect it
#14389 Netduino Plus Firmware v4.2.0 BETA 1
Posted by
on 16 June 2011 - 06:17 PM
in
Beta Firmware and Drivers
I will continue testing in deep tomorrow, but after flashing the TinyBooter it seems to work like a charm!!
As I tought TinyBooter was only intended to boot the TinyCLR I thought it was not neccesary to upgrade it. Now I know something more
Thanks
Carlos.
Thanks
Carlos.
#15360 Netduino Plus update: 50% more RAM
Posted by
on 12 July 2011 - 10:30 AM
in
Beta Firmware and Drivers
Hi Chris,
Is this 50% more ram modification already included within the 4.2 beta that is actually available?
#16957 My N+ is dead
Posted by
on 22 August 2011 - 08:54 PM
in
Netduino Plus 2 (and Netduino Plus 1)
Hi,
I have been using my N+ connected to the network for a couple of weeks without problems, but suddenly the three LAN LEDs are not brighting anymore, and the DM9161 IC gets warm very quickly after the power is applied to the board. I tried erasing the micro by connecting the testpoint close to D0 to 3V3 but still the same problem.
It was working and suddenly it stopped doing so.
What can be wrong?
Regards,
Carlos.
#16990 My N+ is dead
Posted by
on 23 August 2011 - 07:55 PM
in
Netduino Plus 2 (and Netduino Plus 1)
Hi Dan T,
Cat 5 connector has the pins perfectly, but checking the pins with a multimeter shows that all the 8 pins are short-circuited!!!
Chris: Actually there is nothing at all connected to the board, and both less brights. Yesterday when I connected the board to the PC it showed "Netduino" for a second, and then disappeared, but as I erased the micro, now it doesn't show anything
I'm guessing the ethernet part is burned somehow, but the micro might be ok.
I don't know if I should contact Sparkfun for warranty (as I was not doing anything with the board when it failed, it was just connected to the LAN cable and it stopped working) or maybe it would be a good idea to replace the "HS1198" transformer and try...
#17003 My N+ is dead
Posted by
on 24 August 2011 - 06:34 AM
in
Netduino Plus 2 (and Netduino Plus 1)
One month ago
#17149 Sprinkler System Controller on Engadget!
Posted by
on 27 August 2011 - 10:35 AM
in
Netduino Plus 2 (and Netduino Plus 1)
Really nice project! I'm guessing how much hours did you expend on it, I'm sure that a lot of them!
It's a pity to need a man on the middle PC, but it's true that Internet is a rude environment for a N+. One idea would be to use a N+ as front end, acting as a gateway; external phone would access to it through the firewall and this N+ forwards the query to the servicing N+ (the actual one). Gateway N+ can also be the one contacting the weather forecast servers. At the same time service N+ would ping&query the gateway N+ every short time and will power cycle it if it do not response (gateway N+ is powered through a relee controlled by service N+)
It seems complex, but not requiring a PC worth the pain..
#17156 Can the Netduino Plus be powered by a 5V 2A input that is also powering some...
Posted by
on 27 August 2011 - 03:30 PM
in
Netduino Plus 2 (and Netduino Plus 1)
Hi Kenny,
You always can use an USB cable and power the board at 5v by it.
Carlos
#17432 Netduino Mini Firmware v4.2.0 RC1
Posted by
on 02 September 2011 - 08:28 AM
in
Beta Firmware and Drivers
Notes on new SD card support
This firmware includes support for SD cards and System.IO filesystem support.
It includes two functions in the new SecretLabs.NETMF.IO namespace:
StorageDevice.MountSD(...);
StorageDevice.Unmount(...);
Both the MountSD(...) and Unmount(...) features are fully implemented.
You will need to manually add the SecretLabs.NETMF.IO assembly as a reference in your project to use the SD feature. You will also need to add the System.IO assembly.
Hi Chris, what is this new feature for? the previous firmware did not need to mount or unmount the SD in order to be able to use it. What's new now?
By the way, I always wanted to ask if all the writes to the SD are committed immediately or are buffered and lazily wrote in some way.
#17486 Pragma #IF Netduino
Posted by
on 03 September 2011 - 02:49 PM
in
General Discussion
Is there any pragma instruction we can use to conditionally compile modules including the right definitions for each type of hardware?
For instance:
using System;
using System.IO;
using System.IO.Ports;
using System.Threading;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
using SecretLabs.NETMF.Hardware;
#if NetduinoMini
using SecretLabs.NETMF.Hardware.NetduinoMini;
#end
#if NetduinoPlus
using SecretLabs.NETMF.Hardware.NetduinoPlus;
#end
so we can create generic modules?
#17519 Netduino Mini Firmware v4.2.0 RC1
Posted by
on 04 September 2011 - 11:57 AM
in
Beta Firmware and Drivers
Thanks Chris.
By the way, is there any known issue with the debounce filter for InterruptPort on Netduino mini? I'm trying 4.2 RC1 and I get lots of interrupts when input pin changes, as if debounce filter were not working
#17530 SimpleStorage
Posted by
on 04 September 2011 - 03:37 PM
in
Beta Firmware and Drivers
When I were erasing my Netduino Mini because I made the mistake of opening COM1 in my code (which turned out to conflict with the debugging as I use TTL channel for it) I spot in the MFDeploy options on erase that there is already a 4k SimpleStorage area. I think I read it under test somewhere.
Can we use it already? How? If not, when will we be able?
In a Mini without SD card it's a very important feature to store user configuration!
#17569 SimpleStorage
Posted by
on 05 September 2011 - 11:39 AM
in
Beta Firmware and Drivers
Hi Chris,
Thanks for the tip, this was what I was doing when I saw the window in MFDeploy that allowed me to select the areas to erase, including SimpleStorage.
So if I understand it right, there is no way to access it right now even thought it is already build in 4.2. May I ask you a for a rough estimation on when post-RTM will be published?
Carlos.
#17912 Netduino Mini -using same COMPORT for deployment and debugging
Posted by
on 13 September 2011 - 08:58 AM
in
General Discussion
Hi Nissim,
I'm afraid you can't. You will need to delete the application before you can deploy again. Check http://forums.netdui...-netduino-mini/
Regards,
Carlos.
