edison_lidarLite-PWM
This sample is designed for LIDAR-Lite v1 "Silver Label," but should work with LIDAR-Lite v2 using the same wiring (but add a 680uF capacitor because of the speed!).
lidarLite_PWM_read.c reads the PWM output of PulsedLight's LidarLite using Intel's mraa Library and prints the distance in meters.
Pin 2 of the LidarLite is connected to GPIO15 of the Intel Edison. Pin 3 is connected to GPIO14 with a 470 ohm resistor to ground. Since the LidarLite ideally runs at around 5 V, use an external power supply that uses the same ground as the Edison. This program was tested by powering both the Edison and the LidarLite over USB from the same computer.
The constant OFFSET is used in case that the LidarLite is measuring with an
offset. Assign a value that will be subtracted from the measured value.
Tested in Ubilinux. Compile with the following command:
gcc lidarLite_PWM_read.c -lmraa -lrt