USB ASP bootloader not working
Posted: Mon Aug 16, 2010 7:39 am
hi..
I have started VUSB just last week. In the hardware consideration of VUSB wiki documents, I found that they recommend metaboard for experiments.. so I made one for me.. On metalab web, they suggest USBASP bootloader.. I have AMEGA162 16PU.. so I modified make file and bootloaderconfig.h for it to run at 12 Mhz crystal and downloaded hex file in MCU... Now I have been constantly debugging for last two days, but I receive message USB device not recognized.. I m getting 3.47V at D- and nothing at D+... fuse bits are all set for external crystal.. i.e cksel are all one. ckdiv8 is also 1.. Bootrst ,bootsz0 and bootszi are enabled (0)... libusb and filter are installed.. I have time and again checked the connections.. Please help..
I have started VUSB just last week. In the hardware consideration of VUSB wiki documents, I found that they recommend metaboard for experiments.. so I made one for me.. On metalab web, they suggest USBASP bootloader.. I have AMEGA162 16PU.. so I modified make file and bootloaderconfig.h for it to run at 12 Mhz crystal and downloaded hex file in MCU... Now I have been constantly debugging for last two days, but I receive message USB device not recognized.. I m getting 3.47V at D- and nothing at D+... fuse bits are all set for external crystal.. i.e cksel are all one. ckdiv8 is also 1.. Bootrst ,bootsz0 and bootszi are enabled (0)... libusb and filter are installed.. I have time and again checked the connections.. Please help..