I like working with the AVRs, but just do it for fun. Lately, I have been having a problem. When I connect to the AVR Programer, select the Fuses or Lockbits tabs, I get the error: "ISP Mode Error " I have check to make sure that on the Board tab, that the ISP freq is less than 1/4 of the target clock. STK500 Osc = 1.843 MHZ and ISP Freq = 3.998 KHZ. I can actually program the chip, ( AVR 1200 - 12, Also same using 2313 - 10 ). I can not access the Fuses or Lockbits, which I think prevents me from using the internal Oscillator. This use to work. When I select Fuses, all selection are grayed out and have a small red "?" mark. Under Lockbits, "Mode 1 is checked, but has a small red "?", as does mode 2 and 3. Smart Warning and Auto Verify are checked by default. What gives ? Other Facts. This problem was also under AVR 4.x, upgraded to v 4.13. No change. Jumpers Vtarget, Aref, Reset, Xtal 1 are all ON. OscSel set to 2,3. All other jumpers are off. If more info is needed, please ask. Thanks Bruce
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STK500 ISP Mode Error
2007-09-06 by Bruce
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