I²C Stepper Motor Controller AMIS-30624

The AMIS-30624 from On Semiconductor is a stepper motor controller. It is compatible with the TCM-222 which driver is included with Robo Pro 3.1.3.

Stepper motors offer great precision and advanced features. 

• Caution
Before using this device, please read the specification sheet carefully and check the voltage requirements.

The new release allows to manage two AMIS-30624 controllers, AMIS1 stands for 0x60 and AMIS2 for 0x61.

It also fixes a bug when going from a negative to a positive position (or from a positive to a negative position) by stopping at 0.

New commands starting with AMIS12 manage both axis.

Device

• Manufacturer: On Semiconductor  
  
• Break-out provider: On Semiconductor AM306244R1DBGEVB Evaluation Board 
  
• Specification sheet: http://www.onsemi.com/pub/Collateral/30624-D.PDF
  
• I²C address: 0x60 for AMIS1 and 0x61 for AMIS2
  

Functions

Initialisation
AMIS_begin    Wake up and initialise the stepper controller

• Input: None
  
• Output: None
  

AMIS_goReference       Seek for the reference position given by the switch connected to the stepper controller and set it as secure position = 0. The reference position is needed for calibration.

• Input: None
  
• Output: None
  

AMIS_setParameters    Define default parameters, for example speed, with commonly used values

• Input: None
  
• Output: None
  

Normal usage
AMIS_goPosition        Go to the target position defined by the coordinate

• Input: Coordinate of the target position, integer
  
• Output: None
  

AMIS_goSecurePosition    Go to the secure position. Same as AMIS_goPosition with coordinate = 0

• Input: None
  
• Output: None
  

AMIS_hardStop    Hardware stop. Very useful in case of emergency

• Input: None
  
• Output: None

Information functions
AMIS_getStatus    Retrieve current dynamic status. Used by AMIS_goReference and AMIS_goPosition

• Input: None
  
• Output: Error, ReferenceTest and PositionTest, boolean

Error = true means an error is raised. ReferenceTest is true when the switch is activated. PositionTest is true when the position is reached.

AMIS_getPosition    Retrieve the coordinates of the actual, target and reference positions

• Input: None
  
• Output: Actual position, Target position and Reference position, integer
  

Advanced functions
AMIS_setSecurePosition    Go to the target position defined by the coordinate and set it as the new secure position. This functions allows to have a secure position different from the reference position used for calibration.

• Input: Coordinate of the new secure position, integer
  
• Output: None

AMIS_resetPosition    Define the current position as = 0

• Input: None
  
• Output: None

AMIS_softStop    Software stop

• Input: None
  
• Output: None

Utility
readBit    Utility. Return the value of the specified bit from the value

• Input: Value and Bit number, integer
  
• Output: value of the bit, boolean

goInterim This function fixes the bug when going from a negative to a positive position (or from a positive to a negative position) by  stopping at 0.

Download

Download the driver with an example for RoboPro.     

This file is under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

The driver is included in the RoboPro distribution, under the Element groups > Library > I²C tree.