Ponoor PowerSTEP01 Library

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.

Differences from the original library

• 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.

Notes

Registers

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.

Address	Register name in Voltage mode	Register name in Current mode
h09	KVAL_HOLD	TVAL_HOLD
h0A	KVAL_RUN	TVAL_RUN
h0B	KVAL_ACC	TVAL_ACC
h0C	KVAL_DEC	TVAL_DEC
h0E	ST_SLP	T_FAST
h0F	FN_SLP_ACC	TON_MIN
h10	FN_SLP_DEC	TOFF_MIN

SPI for X-NUCLEO-IHM03A1

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.

Install

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

Repository Contents

• 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

License Information

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.