Hello,
I am seeing some strange behavior on my N+. When plugging in, I can ping the device for approx 2 min and always get the TinyBooter response, but rarely the TinyCLR response. Then after 2min or so, the blue light goes off, and the device no longer resonds to ping commands until unplugging and then replugging back in.
I have upgraded everything to the 4.2 RC5 bootloader, firmware and SDK.
it seems like right after flashing and rebooting, I get the TinyCLR response from the N+, but then it seems to switch back to only responding TinyBooter upon restart.
Pinging... TinyBooter
Bootloader build info: Netduino Plus (v4.2.0.0 RC5) by Secret Labs LLC
Chk signaturNot Supported
Not Supported
Pinging... TinyBooter
Bootloader build info: Netduino Plus (v4.2.0.0 RC5) by Secret Labs LLC
Pinging... TinyBooter
Bootloader build info: Netduino Plus (v4.2.0.0 RC5) by Secret Labs LLC
Pinging... Error: No response from device
Ping works for 2min that quits working (4.2 RC5)
Started by Ryan Abrahamson, Jul 27 2012 06:09 PM
3 replies to this topic
#2
Nobby
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Posted 28 July 2012 - 01:51 PM
Have you tried to power the Netduino with a DC power pack? Does the light turn off with a power pack plugged in and no USB?
#3
Ryan Abrahamson
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Posted 30 July 2012 - 05:56 PM
Have you tried to power the Netduino with a DC power pack? Does the light turn off with a power pack plugged in and no USB?
I hadn't up until you suggested it. I thought I could power it with simply the USB connection. Now that I have added the external power source, the board seems to behaving as expected.
Is there a 'theory of operation' or any documentation around how the systems works together? I seems like the blue led on the board corresponds to the time when the bootloader is available vs when the CLR is running.
Thank you for the suggestion!
#4
Nobby
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Posted 01 August 2012 - 07:24 AM
I hadn't up until you suggested it. I thought I could power it with simply the USB connection. Now that I have added the external power source, the board seems to behaving as expected.
Is there a 'theory of operation' or any documentation around how the systems works together? I seems like the blue led on the board corresponds to the time when the bootloader is available vs when the CLR is running.
Thank you for the suggestion!
According to the Netduino schematic, the USB socket is essentially electrically and logically isolated from the button and LED. My best guess is that you possibly have the Netduino plugged into a standard USB port and there is some sort of power management policy under windows or possibly your BIOS that is cutting power to the Netduino for being idle or some other reason.
Although, I've never come across this problem before except with some models of USB powered hard disc drives. I also connect my Netduino to my PC via a self-powered USB hub and I also have no power management enabled under windows except for turning my screen off after 10 minutes(Performance power profile with hibernation/sleep disabled).
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