speeding up the adc on the Prop Boe

manzana

The built-in ADC on the Prop Boe is a tad too slow for my use by alas! I can get a 20x speed improvement by using the assembly version of the PropBoe ADC object (according to the .spin version of the object). That would be really wunnerful but I cant find the assembly version anywhere on the Parallax website. I am surely overlooking something and any suggestion would be much appreciated! thanks

MJB

http://forums.parallax.com/showthread.php/142801-Anyone-have-examples-of-using-the-Prop-Boe-s-ADC-from-PASM

manzana

many thanks mein freund

MJB

@manzana

I didn't see the official Parallax PropBOE-PASM version either - so if you find it please post it here for me and others.

I am currently implementing an interface to the PropBOE ADC in Tachyon Forth, but s.th. is not quite right yet ...
the upper byte is fine, but the lower reads as FF - so I probably have a problem with I2C.

manzana

I just added the start command to my adc code ( in Andy's PropBOE object). This kicks off another cog to do the adc processing and greatly improved my sampling rate to over 1kbps. Sorry I didn't see that before. Very cool.