avrdude: warning: cannot set sck period. please check for usbasp firmware update.avrdude: warning: cannot set sck period. please check for usbasp firmware update.avrdude: warning: cannot set sck period. please check for usbasp firmware update.avrdude: warning: cannot set sck period. please check for usbasp firmware update.avrdude: verification error, first mismatch at byte 0x1e000 0xff != 0x0davrdude: verification error; content mismatchAlguem me sabe dizer o que estou a fazer de mal ?
USE PRECOMPILED VERSIONFirmware:Flash "bin/firmware/usbasp.atmega88.xxxx-xx-xx.hex" or"bin/firmware/usbasp.atmega8.xxxx-xx-xx.hex" to the used controller with aworking programmer (e.g. with avrdude, uisp, ...). Set jumper J2 to activateUSBasp firmware update function.You have to change the fuse bits for external crystal (see "make fuses").# TARGET=atmega8 HFUSE=0xc9 LFUSE=0xef# TARGET=atmega48 HFUSE=0xdd LFUSE=0xff# TARGET=atmega88 HFUSE=0xdd LFUSE=0xffWindows:Start Windows and connect USBasp to the system. When Windows asks for adriver, choose "bin/win-driver". On Win2k and WinXP systems, Windows willwarn that the driver is is not 'digitally signed'. Ignore this message andcontinue with the installation.Now you can run avrdude. Examples:1. Enter terminal mode with an AT90S2313 connected to the programmer: avrdude -c usbasp -p at90s2313 -t2. Write main.hex to the flash of an ATmega8: avrdude -c usbasp -p atmega8 -U flash:w:main.hexSetting jumpers:J1 Power target Supply target with 5V (USB voltage). Be careful with this option, the circuit isn't protected against short circuit!J2 Jumper for firmware upgrade (not self-upgradable) Set this jumper for flashing the ATMega(4)8 of USBasp with another working programmer.J3 SCK option If the target clock is lower than 1,5 MHz, you have to set this jumper. Then SCK is scaled down from 375 kHz to about 8 kHz.
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