USBASP could not set SCK

[wenhuizhang]

Hi, I got a warning: cannot set sck period. please check for usbasp firmware update.
Yet, it seems like other upload logs are fine as attached.

$ avrdude -p atmega2560 -c usbasp -P /dev/ttyUSB0 -B 115200 -e -u -Ulock:w:0x3f:m -U flash:w:./stk500boot_v2_mega2560.hex -Ulock:w:0x0F:m

avrdude: set SCK frequency to 0 Hz
avrdude: warning: cannot set sck period. please check for usbasp firmware update.
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e9801
avrdude: erasing chip
avrdude: set SCK frequency to 0 Hz
avrdude: warning: cannot set sck period. please check for usbasp firmware update.
avrdude: reading input file "0x3f"
avrdude: writing lock (1 bytes):

Writing | ################################################## | 100% 0.00s

avrdude: 1 bytes of lock written
avrdude: verifying lock memory against 0x3f:
avrdude: load data lock data from input file 0x3f:
avrdude: input file 0x3f contains 1 bytes
avrdude: reading on-chip lock data:

Reading | ################################################## | 100% 0.00s

avrdude: verifying ...
avrdude: 1 bytes of lock verified
avrdude: reading input file "./stk500boot_v2_mega2560.hex"
avrdude: input file ./stk500boot_v2_mega2560.hex auto detected as Intel Hex
avrdude: writing flash (255720 bytes):

Writing | ################################################## | 100% 0.00s

avrdude: 255720 bytes of flash written
avrdude: verifying flash memory against ./stk500boot_v2_mega2560.hex:
avrdude: load data flash data from input file ./stk500boot_v2_mega2560.hex:
avrdude: input file ./stk500boot_v2_mega2560.hex auto detected as Intel Hex
avrdude: input file ./stk500boot_v2_mega2560.hex contains 255720 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 0.00s

avrdude: verifying ...
avrdude: 255720 bytes of flash verified
avrdude: reading input file "0x0F"
avrdude: writing lock (1 bytes):

Writing | ################################################## | 100% 0.01s

avrdude: 1 bytes of lock written
avrdude: verifying lock memory against 0x0F:
avrdude: load data lock data from input file 0x0F:
avrdude: input file 0x0F contains 1 bytes
avrdude: reading on-chip lock data:

Reading | ################################################## | 100% 0.00s

avrdude: verifying ...
avrdude: 1 bytes of lock verified

avrdude done.  Thank you.

When I try to upload sketch or dump flash, it showed up as nothing is uploaded:

wenhui-2:Compile WenhuiZhang$ avrdude -p atmega2560 -c usbasp -P /dev/ttyUSB0 -c usbasp -t

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e9801
avrdude> dump 
>>> dump 
Usage: dump <memtype> [<addr> <len>]
avrdude> dump flash 
>>> dump flash 
0000  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0010  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0020  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0030  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|

avrdude> dump flash 0x3eff
>>> dump flash 0x3eff 
Usage: dump <memtype> [<addr> <len>]
avrdude> dump flash 0x3eff 100
>>> dump flash 0x3eff 100 
3eff  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
3f0f  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
3f1f  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
3f2f  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
3f3f  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
3f4f  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
3f5f  ff ff ff ff  

[mcuee]

This is due to your usbasp firmware and has nothing to do with this repo.