Disable TIM8 CH1 and CH2 PWM output
Merge pull request #3 from zxc2694/master

Instead of using the startup_stm32f40xx.s, I use the startup_stm32f4xx.s to support the makefile.
Add ST lib more specifically
Stop optimization now, there are some problem with it
Add openocd config file and gdb script
Merge branch 'port_to_linux_env'
Fix syntax error
Rename directory