Re: [avrdude-dev] Problems with programming an ATmega16L

[Sebastian Fischmeister]

Hello Galen.

  I should have written it to the list. I found the problem: I did put 
the chip into the wrong socket. Not A03 but D03. The s8515 needs to be 
in the D03 and the m16 in the A03. Everything works perfect. Thanks for 
answering though.

  Sebastian


On Apr 25, 2005, at 12:56 PM, Galen Seitz wrote:

> Sebastian Fischmeister <address@hidden> wrote:
>
> >    My setup is working fine with an at90s8515. I use MacOS, a
> > usb2serial, a stk500, and avrdude 4.4.0.
> >
> > As soon as I switch from the at90s8515 to the atmega16, I get the
> > following error when I try to program it: failed to enter programming
> > mode.
> >
> > Below I attached the output of "-v -v -v -v".
> >
> > Does anyone had similar problems and found a solution for it?
>
> The default clock speed for a mega16 is 1 MHz.  SCK speed needs to be
> less than or equal to one quarter of the clock speed.  Try setting the
> SCK period to 5 us.  Below is an example of how to do this.  This may
> not be your only problem.  Are you programming in-circuit, or are you
> inserting the devices into the DIP sockets of the stk500?
>
> galen
>
>
>
> $ avrdude -P /dev/ttyS1 -c stk500 -p m48 -t
>
> avrdude: AVR device initialized and ready to accept instructions
>
> Reading | ################################################## | 100% 
> 0.03s
>
> avrdude: Device signature = 0x1e9205
> avrdude: current erase-rewrite cycle count is -257 (if being tracked)
> avrdude> parm
> > > > parm
> Vtarget         : 5.1 V
> Varef           : 5.1 V
> Oscillator      : 1.843 MHz
> SCK period      : 1.1 us
> avrdude> sck 5u
> > > > sck 5u
> avrdude> parm
> > > > parm
> Vtarget         : 5.1 V
> Varef           : 5.1 V
> Oscillator      : 1.843 MHz
> SCK period      : 5.5 us
> avrdude> quit
> > > > quit
>
> avrdude done.  Thank you.
>
> $