Help in using BS1 and MAX7219 LED Driver to make a Timer

Aanon

I'm new to this forum. I have worked with BS2 mostly, but I·am working with a BS1 for the first time.·I am trying to·make a LED timer using the MAX7219 display·driver chip. The sample program that comes with the documentation just counts from 0-65535. I would like the program to respect the minutes and seconds. I would also like to know how to turn on the decimal point for a given number.·Any help with would be greatly appreciated. Thanks, Aanon

Claytron

The decimal point is the 8th wire on the seven segment led. The MAX chips allow you to control that independent of the other segments in CodeB mode and if your using NoCode mode, then you just turn it on how you would any other segment. Sadly I'm not sure how to help you offhand on the other two. There is sample code on this forum for using the MAX7219 with a clock, which may help on the time issue. I can't help you with working with the BS1 though, as I've never touched it. Anyways, good luck.

Chris Savage

Aanon,

I don’t believe there is a more detailed or specific example of what you’re trying to do. Perhaps you could look at a BS2 example that does do this and see how you might convert it using the example BS1 code you have. The following link is to a BS2 Project which does make use of the decimal points for the MAX7219 as well as displaying hours, minutes and seconds. I hope this helps. Take care.

http://forums.parallax.com/showthread.php?p=552892


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Chris Savage
Parallax Tech Support