step_driver

• can use with DRV8825,A4988

AXIS X ( motor 0 )

• PA0 PULSE pin
• PA1 DIR pin
• PB12 LIMIT0 ( active low )
• PB13 LIMIT1 ( active low )

AXIS Y (motor 1)

• A6 PULSE pin
• PA5 DIR pin
• PB14 LIMIT2 ( active low )
• PB15 LIMIT3 ( active low )

UART PORT

• PA9 TX pin
• PA10 RX pin

COMMAND

• have to 8 byte to send over uart band 9600
• 

USE ST-Link to Upload

My testing video

• https://www.youtube.com/watch?v=UXxgs-XSBnM
• (This version can't setting pulse frequency default frequency is 10 kHZ)