SLAU802 March 2019
The OOBE of the LP-MSP430FR2476 LaunchPad development kit demonstrates how to implement a simple thermometer by using the internal ADC of the MSP430FR2476 MCU to measure the output voltage from an analog temperature sensor.
When powering up the Out-of-Box demo, the board performs an initial temperature calibration and illuminates RGB LED2 in a green color. Try to heat the temperature sensor U1 by blowing hot air on it to see if you can get LED2 to turn red or using a compressed air can to blow cold air onto the sensor to see LED2 turn blue. LED2 indicates the relative difference between the current temperature and the calibrated measurement.
Press button S1 to recalibrate the temperature to the most recent measurement and send a UART message (at 9600 baud) containing the new calibrated temperature through the backchannel UART. Press button S2 at any time to send a UART message containing the current ambient temperature measurement in Celsius.