Hi Rieker, I think 'AVR Freaks' might be a better place to know more about device troubleshooting.
HTH Anitha >-----Original Message----- >From: avr-gcc-list-bounces+anitha.boyapati=atmel....@nongnu.org >[mailto:avr-gcc-list-bounces+anitha.boyapati=atmel....@nongnu.org] On >Behalf Of Rieker Flaik >Sent: Saturday, February 26, 2011 1:33 PM >To: avr-gcc-list@nongnu.org >Subject: [avr-gcc-list] uisp - atmega16 "dead" after setting high/low fuses > >Hi, > > I did a ATMega16-Hobby-Project a while ago. Today I changed the source >code, compiled it and tried to upload the hex-file into the chip. But it >wasn't possible because uisp couldn't even detect the chip-model. "Maybe >I falsely set some Lock-Bits a while ago", I thought and took a second >ATMega16 from my cubicle of electronic equipment and tested it with: > >uisp -dlpt=/dev/parport0 --rd_fuses -dprog=dapa > > I remember that it showed the correct chip-model and the default >values for all fuses. > > In my design I use a external crystal. So I tried to set the >fuse-bytes accordingly: > >HIGH_BYTE: > 7 OCDEN "On Chip Debug" 1 > 6 JTAGEN "JTAG" 1 > 5 SPIEN "Serial Programming" 0 > 4 CKOPT "Oscillator Option" 0 > 3 EESAVE "EEPROM is preserved" 1 > 2 BOOTSZ1 "Boot Size" 0 > 1 BOOTSZ0 "Boot Size" 0 > 0 BOOTRST "Reset Vector" 1 > > 0b11001001==0xC9 > >LOW_BYTE: > 7 BODLEVEL "Brown-out" 1 > 6 BODEN "Brown-out enabled" 1 > 5 SUT1 "Start-up Time" 1 > 4 SUT0 "Start-up time" 1 > 3 CKSEL3 "Clock" 1 > 2 CKSEL2 "Clock" 1 > 1 CKSEL1 "Clock" 1 > 0 CKSEL0 "Clock" 1 > > 0b11111111==0xFF > >did a: > >uisp -dlpt=/dev/parport0 --wr_fuse_h=0xC9 --wr_fuse_l=0xFF -dprog=dapa > > and the device was gone :-( > >Even a "uisp -dlpt=/dev/parport0 --rd_fuses -dprog=dapa" doesn't work. > >What could be the problem? > >Thanks, > rieker > > > >_______________________________________________ >AVR-GCC-list mailing list >AVR-GCC-list@nongnu.org >http://lists.nongnu.org/mailman/listinfo/avr-gcc-list _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
