enable reversed output
using system_stm32f10x.c in CMSIS
ignore CTags file
avoid multiple SD_Init()
fix misuse of ==
Merge branch 'master' into devel
debug for step calculation
- fix accumulative error of move
- add feedrate argument
- reset axis A after homing
fix uninitialized member
better implementation of timer calculation
point distance calculation function
- use independent hardware timer for each stepper motor
- support feedrate parameter
check if not moving
keep step pin low when motor stops
add resources usage in README
add support for G28, G90, G91, M84
- add macros for different G-Code generator
- support reading temperature from G-Code
bug fix: distance of extrusion should be absolute value
Merge branch 'devel' into wip-gcode
support fan control command