I was looking myself for some code for doing FFT that will be fast enough for spectrum display of music, but did not find any.
With Arduino I had to give up as the best I could do is 2-3 times a second which visually not good enough.
The code linked here does it in 50ms overall so 20 times a second which is really good, however it using RLP (native) code. Hope you will find it useful.
The FFT code was taken from Plain FFT by Didier Longueville who maintains blog at Arduinoos site http://didier.longue...e.fr/arduinoos/ and was generous to share it with us. Thank you Didier!
Video
<iframe width="420" height="315" src="http://www.youtube.com/embed/BAqij8u8jzA" frameborder="0" allowfullscreen></iframe>
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Topics I've Started
Working FFT with RLP code
09 May 2012 - 10:15 PM
N+ showing Weather Underground information on VGA
20 April 2012 - 12:45 PM
Using N+ to get weather forecast information from Weather Underground site
Features
Code and instructions (very easy) in here
Features
- Fully automatically identifies location in the globe and time
- Graphically displays current and forecast weather information
- Automatically synchronizes time and daylight savings from the internet (using NTP protocol)
- Shows sunrise, sunset and moon phase information
- Does not require any PC to be involved
- Easy to connect and assembly, only Ethernet cable and power supply
- Supports DHCP for network connection
- Supports both VGA screens and small 3.2" screens
Code and instructions (very easy) in here
PC rebooting on NetduinoPlus Disconnect
12 April 2012 - 08:31 AM
After I installed the 4.2 drivers, I got my PC rebooting on disconnecting NetduinoPlus but not always. The phenomena also included PC reset on pressing the NetduinoPlus on-board reset pin (the two developed too strong attachment )
I now downgraded the Netduino itself to 4.1.06 again (not enough code space for my program in 4,2).
PC Information:
Windows 7 64bit (fully updates from MS)
VS 2010 Professional v 10.0.40219.1 SP1 Rel
NetduinoPlus Driver information:
(right click on the NetduinoPlus device in device manager)
6.1.7600.16385 by WinDDK
.
I now downgraded the Netduino itself to 4.1.06 again (not enough code space for my program in 4,2).
PC Information:
Windows 7 64bit (fully updates from MS)
VS 2010 Professional v 10.0.40219.1 SP1 Rel
NetduinoPlus Driver information:
(right click on the NetduinoPlus device in device manager)
6.1.7600.16385 by WinDDK
.
Assemblies not successfully deployed to device
08 April 2012 - 08:31 PM
Just moved to 4.2 RTM (QFE1), on a Netduino Plus
I checked couple of programs, but found issues. Projects with any networking seems to work fine. However, projects involving networking do not get deployed.
The error I am getting is quite useless:
And the error list suggest I should check my hardware.
Any pointer for identifying the problem will be appreciated.
I checked couple of programs, but found issues. Projects with any networking seems to work fine. However, projects involving networking do not get deployed.
The error I am getting is quite useless:
Incrementally deploying assemblies to device
Deploying assemblies for a total size of 51348 bytes
Assemblies not successfully deployed to device.
Deployment to the device was not successful.
And the error list suggest I should check my hardware.
Any pointer for identifying the problem will be appreciated.
Moving to SDK 4.2 question
08 April 2012 - 11:38 AM
I am trying to move my NetduinoPlus to v4.2 and was following the Wiki on how to do this.
In the article Installing the TinyBooterDecompressor step by step (Netduino and Netduino Plus) I got to the surprising step of flashing the TinyBooter... but could not find where to get it from. In the SecretLabs directory I only have Assemblies and drivers.
Any help will be appreciated.
In the article Installing the TinyBooterDecompressor step by step (Netduino and Netduino Plus) I got to the surprising step of flashing the TinyBooter... but could not find where to get it from. In the SecretLabs directory I only have Assemblies and drivers.
Any help will be appreciated.
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