6 replies to this topic

[rgoode214]

Curious to see if anyone has gotten the 2416 led matrix from Sure Electronics working properly on the N+2. Ive looked at the code provided in other threads using the N+ but one is for the 32x8 display (im in the process of rewriting it) and the other uses SPI which i think is broken on the N+2. Ryan

[Nevyn]

Curious to see if anyone has gotten the 2416 led matrix from Sure Electronics working properly on the N+2. Ive looked at the code provided in other threads using the N+ but one is for the 32x8 display (im in the process of rewriting it) and the other uses SPI which i think is broken on the N+2.

I'm sure the SPI will be fixed at some point in the future. In the meantime you could always add a small BitBang method to output the data for you whilst you work on adapting the driver. You can then change it back to SPI when it has been fixed.

There are a couple of pieces of code around the forums which implement BitBanging (http://forums.netdui...tbanger-driver/ for one...)


Regards,
Mark

[Mario Vernari]

Curious to see if anyone has gotten the 2416 led matrix from Sure Electronics working properly on the N+2. Ive looked at the code provided in other threads using the N+ but one is for the 32x8 display (im in the process of rewriting it) and the other uses SPI which i think is broken on the N+2.

Ryan

You should specify which board are you referring. Anyway, I own a 32x16 bi-color board purchased by Sure, and the problem is the difficulty to generate the pattern automatically.
My plan is to find a solution (mostly hardware), but the Mark's suggestion is valuable too. I only wish to find an hardware way to generate the pattern, because the much higher speed.
At the moment I am pretty busy, so...be patient!
Cheers

[NooM]

mario: what about an eeprom where you save prerendered "images" ? 32x16 isent that big, loading that data is fast

[Mario Vernari]

mario: what about an eeprom where you save prerendered "images" ?
32x16 isent that big, loading that data is fast

I don't understand what you mean...why an EEProm should solve the problem?

I am talking about a generic interfacing (i.e. driver) for such a board (btw, it seems there are many models more or less compatible). The problem is related to the SPI data which should be "pumped-into" the board, but there's a kind of chip-select to activate. The hardware circuit is pretty intelligent, but it is not easy to drive with the Netduino (even Plus 2).
Cheers

[rgoode214]

im using the 24x16 driven by an HT1632C and ive started porting the code over from Miles Burton's arduino toolkit but im not sure the memory addresses hes using are the same... its turning on groups of 4 LEDS are once intead of just 1. Im looking at the datasheet and im trying to determine the correct address but i guess i dont know how to read the memory address table to make an accurate determination. Ryan

[rgoode214]

I figured out my problem... when i ported the code over to write out the data i didnt convert the right shift properly in my math. Got the display working =) Ryan