Re: [avr-gcc-list]

[Kevin Neff]

On Tue, 18 Jan 2005, [gb2312] ÀîÆæÔ½ wrote:

>when I use uisp to program my atmega128,there is the error message as
>below,and the oscillator on board doesn't surge at all.
 
Are you using the STK500 board to program your MCU?  My firmware (1.18)
doesn't play well with uisp.  I develop on a linux box and am using
AVR Studio on a window$ machine to program the MCU... I think I've put
100,000 miles on my mouse and monitor plugs so far for this project :)

> An error has occurred during the AVR initialization.
>  * Target status:
>    Vendor Code = 0xff, Part Family = 0xff, Part Number = 0xff
> 
> Probably the wiring is incorrect or target might be `damaged'.

This is not a very descriptive error.  Many, many things cause it.
Some of the causes that come to mind include (for the 128) wrong
programming pins.  Check the datasheet--I think the UART pins are used
for MISO and MOSI.  It's different from most of the other microprocessors.

>But i found out that the default jtag_en fuse bit is unprogrammed,so
>the jtag ice is no use and i cann't change the clock source.

Use --wr_fuse_l=0x??, --wr_fuse_h=0x??, and --wr_fuse_e=0x?? to set
the fuses.  The datasheet for the ATMEGA128 will have the specific bit
definitions.  You should probably disable the ATMEGA103 compatibility
mode while you're at it.