Arduino library support for STMicroelectronics PowerSTEP01 stepper driver chip with voltage and current mode drive.

This library is a modification of Megunolink powerSTEP01_Arduino_Library which is a modification of the L6470-based SparkFun AutoDriver library.

This library is intended to use with Ponoor Experiments STEP400, but you also can use with STMicroelectronics X-NUCLEO-IHM03A1.

• Added the current control drive mode functions
• Added getSpeed() function
• Disable interrupts during getStatus and xferParam to avoid return value collapse for ATSAMD
• Fixed ACT bit of goUntil and releaseSw
• Fixed STATUS register bit names and bit masks.
• Changed some constants name(CMD_GET_STATUS, REG_STATUS) to avoid conflicts with other libraries.

Since the registers shown in the table below are physically identical, for example, when you change KVAL_HOLD, the value of TVAL_HOLD is also changed. Please save them in Arduino sketch when you switch the control mode if necessary.

X-NUCLEO-IHM03A1 has an Arduino formfactor but the SPI pins are appearing on pins D11-D13, instead of the SPI socket. This is a classic SPI pinout used in Arduino UNO or ealrier models, so this shield won't work with other Arduinos like Leonardo/Mega. In Arduino Zero/M0, you can use these pins by configuring them to behave as SPI pins.

This library can be installed from the library maneger of Arduino IDE.

• src - Contains the source for the Arduino library.
• Examples - Example sketches demonstrating the use of the library
• keywords.txt - List of words to be highlighted by the Arduino IDE
• library.properties - Used by the Arduino package manager

This product is open source! The code is beerware; if you see any SparkFun employee at the local, and you've found their code helpful, please buy them a round! Please use, reuse, and modify these files as you see fit. Please maintain attribution to SparkFun Electronics and release anything derivative under the same license.

Distributed as-is; no warranty is given.