mmcp42
February 11, 2013, 8:19pm
1
... but not quite there
I have a home-brew stand alone UNO clone
I patched another UNO to connect
UNO clone
+5v to +5v
I'm running Atmega_Board_Programmer
Atmega chip programmer.
looks good
I get
look good
am I right to think the board must be working ok to get this far
any help advice would be most gratefully received
You have the "divide clock by 8" fuse set. Whilst it should work anyway, I think that is the issue. Try making the low fuse 0xE2.
A simple way of doing that would be to find these lines in the sketch (the most recent version, anyway):
// for Atmega8, fix up fuse to run faster, then write to device
if (signatures [foundSig].timedWrites && lFuse != newlFuse) <------ remove this line
{
Serial.println (F("Fixing fuse setting ..."));
writeFuse (newlFuse, writeLowFuseByte);
delay (1000);
digitalWrite (RESET, HIGH); // latch fuse
startProgramming ();
delay (1000);
}
Comment out the "if" line (so it does it anyway). Then it should fix up the low fuse byte, and then do the programming.
mmcp42
February 11, 2013, 8:44pm
3
wow
you, sir, are a gentleman and no mistake
now why would I have the divide clock by 8 fuse set?
mmcp42:
you, sir, are a gentleman and no mistake
now why would I have the divide clock by 8 fuse set?
Isn't that the factory default, internal 8 Mhz R/C clock and divide /8 set?
Lefty
mmcp42
February 11, 2013, 9:04pm
5
retrolefty:
mmcp42:
you, sir, are a gentleman and no mistake
now why would I have the divide clock by 8 fuse set?
Isn't that the factory default, internal 8 Mhz R/C clock and divide /8 set?
Lefty
have to say I have no idea
anyway - all working now bunny[happy]++
system
February 11, 2013, 9:24pm
7
Yes, factory default is 8Mhz internal osc and Clock Div 8 to give 1Mhz.
