AMG88XX Infrared Array Sensor

Overview

This sample application periodically reads the 8x8 temperature array from the AMG88XX sensor and displays its values to the serial console. The sample can also be configured to be triggered when the upper threshold of 27° Celsius has been reached.

Requirements

The Panasonic AMG88XX is an 8x8 (64) pixel infrared array sensor available only in a SMD design. Here are two sources for easily working with this sensor:

We used the Evaluation Kit mounted on FRDM-K64F board. On the Evaluation Kit, all jumpers except the J11 must be removed.

This sample uses the sensor APIs and the provided driver for the AMG88xx sensor.

Building and Running

This sample reads from the sensor and outputs sensor data to the console every second. If you want to test the sensor’s trigger mode, specify the trigger configuration in the prj.conf file and connect the interrupt output from the sensor to your board. For the FRDM-K64F we tested, pin PTC2 must be muxed as GPIO. You can change the upper threshold values by editing the sample. The default upper threshold value is 27° Celsius (80.6° Fahrenheit).

Using west:

west build -b frdm_k64f samples/sensors/amg88xx

Using CMake and ninja:

cmake -B build -GNinja -DBOARD=frdm_k64f samples/sensors/amg88xx
ninja -C build

Sample Output

Sample shows values in° C multiplied by 100.

new sample:
---|  00    01    02    03    04    05    06    07
000|02075 01900 02000 01925 02050 01975 01950 01900
001|02000 02000 02000 01900 02125 02000 02050 02050
002|02075 01950 01950 01925 02050 01975 02075 02000
003|02175 02000 01975 01800 02000 02125 01925 02050
004|01975 02050 02050 02000 02000 01975 01925 02000
005|02100 02100 02075 02000 02025 02050 02100 02100
006|01975 02150 02075 02025 02025 02225 02025 02375
007|02025 02075 02150 02075 02025 02050 02125 02400

The sensor array data is output every second.