Search found 23 matches

by cbyrne
Fri Oct 05, 2012 2:26 pm
Forum: NetBurner Hardware
Topic: MOD5441X EFFS STD flash settings example
Replies: 8
Views: 5715

MOD5441X EFFS STD flash settings example

I'm trying to format the voluminous 32MB flash on the MOD5441 with an EFFS STD file system. My fs_mountdrive call failes with return code 3 ("not enough memory"). I cooked up a MX289GL256F.h file (the chip on board) based on examples for other modules but not sure what I did wrong. I'm usi...
by cbyrne
Wed Sep 12, 2012 6:28 am
Forum: NetBurner Hardware
Topic: Remove Ethernet Oscillator on Mod5234 to reduce EMI?
Replies: 3
Views: 2769

Re: Remove Ethernet Oscillator on Mod5234 to reduce EMI?

MIL-STD 461, not sure how it compares to Class A/B. Yes, we're going to try the processor's spread spectrum feature. Thanks.
by cbyrne
Tue Sep 11, 2012 11:28 am
Forum: NetBurner Hardware
Topic: Remove Ethernet Oscillator on Mod5234 to reduce EMI?
Replies: 3
Views: 2769

Remove Ethernet Oscillator on Mod5234 to reduce EMI?

The Mod5234 has a 25Mhz crystal that feeds the DAVICOM9161 Ethernet chip. We would like to reduce EMI and our application does not need Ethernet. If we just remove the oscillator, what affect would there be on the DAVICOM to Coldfire interface? Has anyone removed the 25MHz oscillator, for instance w...
by cbyrne
Thu Feb 02, 2012 7:18 am
Forum: NetBurner Software
Topic: Netburner and Embedded Linux Cosultant needed
Replies: 16
Views: 10658

Re: Netburner and Embedded Linux Cosultant needed

If you have 7 serial ports, you may have several via etpu. We found the etpu uarts interrupt once per byte. That can be a significant demand on the CPU depending on data rates. Using the port with the highest data rates on the hardware uarts helps, but even those only have a 4 byte FIFO. They also r...
by cbyrne
Fri Oct 21, 2011 11:18 am
Forum: NetBurner Software
Topic: NB is it time to expand out to other platforms ?
Replies: 30
Views: 17557

Re: NB is it time to expand out to other platforms ?

Hi, we're anxiously awaiting the new high-end offering, assuming it is still in the plan. Would it be possible to get some technical information such as specific core part, signal pin-out, etc., for possible redesign of our carrier board which currently supports a 5234 and when might the modules be ...
by cbyrne
Thu May 19, 2011 4:23 pm
Forum: NetBurner Software
Topic: MOD5234 eTPU PWM function fails to produce requested pulse
Replies: 2
Views: 2277

MOD5234 eTPU PWM function fails to produce requested pulse

The eTPU on the 5234 has a Pulse Width Modulator function. We are having a little trouble achieving the pulse with parameters we need. What could be the problem? We are trying to produce a 20Hz pulse with 50% duty cycle with the eTPU on a MOD5234. When we call with the following parameters, an Oscil...
by cbyrne
Thu Feb 10, 2011 9:30 am
Forum: NetBurner Software
Topic: Storing two applications in the Netburner....
Replies: 4
Views: 3342

Re: Storing two applications in the Netburner....

What exactly is the second compcode parameter used for -- anything other than checking if the image will fit in the allotted space?
by cbyrne
Tue Oct 19, 2010 10:22 am
Forum: NetBurner Software
Topic: eTPU UARTs with DMA
Replies: 0
Views: 2232

eTPU UARTs with DMA

We have an application that uses the three 5234 UARTs plus two more via eTPU. There are many thousands of interrupts per second. In some of our testing, bytes are lost. The eTPU UARTs appear to generate an interrupt per byte. What would it take to get our eTPU to use DMA in order to reduce the numbe...
by cbyrne
Mon Sep 20, 2010 2:42 pm
Forum: NetBurner Software
Topic: Missing flash block when using EFFS-STD
Replies: 11
Views: 6061

Re: Missing flash block when using EFFS-STD

Yes, that definitely looks like a viable option, thanks. The tradeoff would be less overhead. The file system model simplifies managing the space since I am saving small configuration files in flash and the power failsafe during writes is also a selling point.