TDK integrated angle sensor with TMR (Tunnel Magneto Resistance)
Overview
This sample application shows how to use the angle sensor with TMR (Tunnel Magneto Resistance) features of TDK Invensense sensors. It consists of:
** Angle: TMR angle sensors with Configurable digital outputs. SPI (1kHz~10MHz) I2C (400kHz, 1MHz) Encoder (A, B, Z)
Wiring
This sample requires an external breakout for the sensor. You must provide a devicetree overlay to define the interface (SPI, I2C, Encoder).
Case 1: I2C Interface - SDA/SCL: I2C bus pins. - Interrupt GPIO: For Data Ready (DRDY) signals. - SA1/SA2 GPIO: Device address selection pins.
Case 2: SPI Interface - MOSI/MISO/SCK: SPI bus pins. - CS GPIO: Chip Select pin. - Interrupt GPIO: For Data Ready (DRDY) signals.
Case 3: Encoder Interface - Phase A (MOSI), Phase B (MISO), Index Z (SCK): Connect to the encoder input pins.
Building and Running
After providing a devicetree overlay that specifies the sensor location, build this sample app using:
# From the root of the zephyr repository
west build -b nrf52840dk/nrf52840 samples/sensor/tad2144
west flash
Sample Output
*** Booting Zephyr OS build v3.x.x ***
Found device "tad2144_encoder", getting sensor data
Angle: -101.43, Temp: 28.00 C
Angle: -101.42, Temp: 28.00 C