This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

1-Wire scanner


This sample demonstrates how to scan for 1-Wire devices. It runs the 1-Wire scan routine once and prints the family id as well as serial number of the devices found.

Building and Running

Set DTC_OVERLAY_FILE to “ds2484.overlay” or “w1_serial.overlay” in order to enable and configure the drivers.

west build -b nrf52840dk/nrf52840 samples/drivers/w1/scanner -- -DDTC_OVERLAY_FILE=w1_serial.overlay
west flash

Sample Output

[00:00:00.392,272] <inf> main: Device found; family: 0x3a, serial: 0x3af9985800000036
[00:00:00.524,169] <inf> main: Device found; family: 0x3a, serial: 0x3a6ea2580000003b
[00:00:00.656,097] <inf> main: Device found; family: 0x28, serial: 0x2856fb470d000022
[00:00:00.656,097] <inf> main: Number of devices found on bus: 3