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Messages - tonybeckett

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1
OLEDs / Re: nhd-0216cw-ar3 - locks up
« on: February 25, 2015, 07:03:09 AM »
I added 4 mS delays after each and a longer one in the main loop.
Only after adding a 300mS delay does the program get stable.
Seems the display pulls the i2c bus low and never releases.


2
OLEDs / Re: nhd-0216cw-ar3 - locks up
« on: February 18, 2015, 01:19:41 PM »
IF I try to send cmds to
clear,home, display 1 line , gotoline 2, display
faster than 2 Hz the display hangs the i2c bus randomly.
Is that expected?

T

3
OLEDs / Re: nhd-0216cw-ar3 - locks up
« on: February 17, 2015, 02:14:53 PM »
How fast can the display respond to clear display cmd , home cmd, and fill 2 lines with text?

4
OLEDs / Re: nhd-0216cw-ar3 - locks up
« on: February 17, 2015, 07:34:33 AM »
I had tried 10K pullups but the signals did not look good.

5
OLEDs / nhd-0216cw-ar3 - locks up
« on: February 13, 2015, 03:07:28 PM »
Interfacing to the display using i2c at 3.3V with 4.7K pullups.
I have been able to send both lines multiple times but
randomly the i2c bus freezes. Seems as the data line is being pulled low.
happens in middle of a command or data transfer. 
I have tried 10KHz and 400KHz clock rate transfers both have the issue.

Any thoughts?

Cheers
T

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