"--endian=little" 

"--cpu=Cortex-M0+" 

"--fpu=None" 

"--semihosting" 

"--drv_interface=SWD" 

"--stlink_reset_strategy=0,0" 

"--drv_swo_clock_setup=64000000,0,2000000" 

"--drv_catch_exceptions=0x000" 

"--drv_debug_ap=0" 

"--stlink_probe=stlinkv2"