Various problems with DSO 068 and reflashing firmware

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wwe432
Posts: 3
Joined: Fri Nov 17, 2017 5:23 am

Various problems with DSO 068 and reflashing firmware

Post by wwe432 »

I have been having various problems with thd DSO 068. It worked for a few minutes after I built the kit but then various intermittent problems ouccured. It got stuck in the scope settings so I rebooted it and tried again. When I tried to reset the frequency on the tone generator it froze again and some of the pushbuttons wouldn't work. Then no controls would respond except poweron/off and reset. Now there is just a low contrast grid with a few symbols at the top of the screen. I tried shorting PF6 at J7 to ground but that did nothing. The + and - 5V are good and the 20MHz. crystal oscillator is working. I have a 500Hz. square wave 2.8Vpp at the MOSI pin on J5. Can I reflash the boot loaders and firmware for the ATmega64 and ATmega48 through the USB connector on the scope or do I have to use the SPI connectors J4 and J5? (J4 wasn't installed since I plan to use a battery.) I have downloaded the boot loader and firmware programs from JYE Tech.
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