I'm working on a project where I need to interface an AS5311 high-resolution magnetic linear encoder with an ESP32. The AS5311 uses an SSI (Synchronous Serial Interface), which is somewhat similar to SPI, but with key differences. I want to ensure I capture high-precision data, as sub mili meter positional accuracy.
Project Requirements:
Precision: I need to achieve sub mili metre accuracy in linear measurements. Communication: The ESP32 will be the main controller, ideally receiving data over I2C or SPI for simplicity. Distance: Measuring piston extension, where the sensor's alignment with a magnetic strip will be critical. My Questions:
Is it feasible to emulate SSI using the ESP32’s SPI interface? I understand that SSI and SPI are similar but have timing differences. I’m concerned about maintaining data integrity and speed without additional hardware.
Should I consider using an SSI-to-SPI bridge
Any recommendations for handling data parsing or calibration when reading SSI data on the ESP32, especially if I go with bit-banging or use SPI? The AS5311 has a high resolution, so I want to avoid losing data or introducing errors.
Any insights or recommended approaches would be greatly appreciated, especially if you’ve worked with the AS5311 or similar SSI encoders! Thank you!
