We have developed quite a few sample applications to demonstrate the capabilities of the M4 on the i.mx6SoloX. Please see links below for our work.
1. Interfacing a $4 LCD touch panel to the M4
2. Digital temperature gauge using DS18B20
3. Pulse oximetry with MAX30100
4. Tiny Scope (ADC processing + SPI OLED)
5. Simple VW vehicle diagnostic adaptor for KWP2000 services
6. CAN Bus interfacing to vehicle instrument cluster
7. SPI interfacing to a SSD1306 OLED display
8. SD Card interfacing from M4 via SPI
9. FXOS8700CQ + FXAS21002C sensor fusion on the M4
www.motiveorder.com
Embedded Intelligence
Additional example :