zephyr

History

Keith Packard 0b90fd5adf samples, tests, boards: Switch main return type from void to int As both C and C++ standards require applications running under an OS to return 'int', adapt that for Zephyr to align with those standard. This also eliminates errors when building with clang when not using -ffreestanding, and reduces the need for compiler flags to silence warnings for both clang and gcc. Most of these changes were automated using coccinelle with the following script: @@ @@ - void + int main(...) { ... - return; + return 0; ... } Approximately 40 files had to be edited by hand as coccinelle was unable to fix them. Signed-off-by: Keith Packard <keithp@keithp.com>		2023-04-14 07:49:41 +09:00
..
src	samples, tests, boards: Switch main return type from void to int	2023-04-14 07:49:41 +09:00
CMakeLists.txt
ds2482-800.overlay	samples: w1: Update scanner example for ds2482-800 bus driver	2023-04-07 13:11:54 +02:00
ds2484.overlay	samples: drivers: w1: Enable arduino_i2c and arduino_serial explicitly	2023-01-16 09:26:10 +01:00
ds2485.overlay	samples: drivers: w1: Enable arduino_i2c and arduino_serial explicitly	2023-01-16 09:26:10 +01:00
prj.conf	samples: w1: Update scanner example for ds2482-800 bus driver	2023-04-07 13:11:54 +02:00
README.rst
sample.yaml	samples: w1: Update scanner example for ds2482-800 bus driver	2023-04-07 13:11:54 +02:00
w1_serial.overlay	samples: drivers: w1: Enable arduino_i2c and arduino_serial explicitly	2023-01-16 09:26:10 +01:00

README.rst

.. _w1_scanner_sample:

1-Wire Scanner Sample
#####################

Overview
********

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.

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/w1/scanner
   :board: nrf52840dk_nrf52840
   :gen-args: -DDTC_OVERLAY_FILE=w1_serial.overlay
   :goals: build flash
   :compact:

Sample Output
=============

.. code-block:: console

    [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