Adafruit MCP9808 Shield
Overview
The Adafruit MCP9808 High Accuracy I2C Temperature Sensor Shield features a Microchip MCP9808 Temperature Sensor and two STEMMA QT connectors.
Requirements
This shield can be used with boards which provide an I2C connector, for
example STEMMA QT or Qwiic connectors.
The target board must define a zephyr_i2c node label.
See Shields for more details.
Pin Assignments
Shield Pin |
Function |
|---|---|
SDA |
MCP9808 I2C SDA |
SCL |
MCP9808 I2C SCL |
A0 |
MCP9808 I2C address |
ALERT |
MCP9808 interrupt out |
In order to use interrupts you need to connect a separate wire from the
shield to a GPIO pin on your microcontroller board. See
jedec,jc-42.4-temp for documentation on how to adjust the
devicetree file.
Programming
Set --shield adafruit_mcp9808 when you invoke west build. For example
when running the JEDEC JC 42.4 compliant Temperature Sensor temperature measurement sample:
# From the root of the zephyr repository
west build -b adafruit_qt_py_rp2040 --shield adafruit_mcp9808 samples/sensor/jc42