[Amforth] Measuring time - timer for 1284p and Zero Drift Clock

2012-01-20 Thread pito
..long time back.. maybe somebody finds it useful.. provided as-is.. Time measurement (with float results) 48bit timer (timer + epoch) for 1284p: \ \\\ \ 2007-12-26 EW w4_clock_tick.fs \ 2010-09-02 PITO - FLOAT TIME MEASUREMENT ATMEGA 1284P \

Re: [Amforth] measuring time

2012-01-20 Thread Mark Malmros
Working with the ATMega328, I found that I had to set the prescaler (TCCR0B) after I assigned the interrupt vector. So, you might try : tim0start ( -- ) tim0ini +tim0int 5 TCCR0B c! ; (remove the prescaler store from tim0ini ) It worked for me. BTW thanks to the list for help with the lfuse cl

Re: [Amforth] measuring time

2012-01-20 Thread Robert Epprecht
Matthias Trute writes: My chip is labelled ATMEGA-328-PU I have included atmega328p.frt Hope that's ok? > Are the numbers behind the T-labels correct (memory mapped addresses, > somewhere around $40ff) for the Atmega328p? hex TCCR0A . 44 > Otherwise it looks like you're programming > the wrong

Re: [Amforth] uploading files on arduino UNO

2012-01-20 Thread Robert Epprecht
Matthias Trute writes: >> ImportError: No module named fdpexpect > ii python-pexpect2.3-1ubuntu Yes, that was the problem here. Uploading a very short first testfile to the uno with amforth-shell.py went fine now :) Thanks a lot, Robert -

Re: [Amforth] measuring time

2012-01-20 Thread Matthias Trute
Hi, > But here we go: > Whats wrong with the following simple test code: looks innocent (haven't tried it however) > The result on my arduino uno is quite inconsistent, but mostly I see: > > 3 TCCR0B c! > does not hang the system, but does not tick either. > > 4 TCCR0B c! > hangs system, had t

Re: [Amforth] uploading files on arduino UNO

2012-01-20 Thread Matthias Trute
Robert, > import fdpexpect > ImportError: No module named fdpexpect > > Is this a debian python installation problem? Most probably. My ubuntu 11.10 has the package > dpkg -l | grep python | grep exp ii python-pexpect2.3-1ubuntu installed automatically, IIR