michaelh/zephyr
1
0
Fork 0
Code Releases Activity
zephyr/samples/drivers/smbus
History
Henrik Brix Andersen c0c8952739 shell: do not enable subsystem/driver shell modules by default 
Do not enable subsystem/driver shell modules by default and stop abusing
CONFIG_SHELL_MINIMAL, which is internal to the shell subsystem, to decide
when to enable a driver shell.

The list of shell modules has grown considerably through the
years. Enabling CONFIG_SHELL for doing e.g. an interactive debug session
leads to a large number of shell modules also being enabled unless
explicitly disabled, which again leads to non-negligible increases in
RAM/ROM usage.

This commit attempts to establish a policy of subsystem/driver shell
modules being disabled by default, requiring the user/application to
explicitly enable only those needed.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
2023-11-20 09:21:40 +01:00
..
src samples, tests: Switch main return type from void to int 2023-04-14 07:49:41 +09:00
CMakeLists.txt tests: smbus: Cleanup CMakeLists files 2023-03-30 09:45:02 +00:00
prj.conf shell: do not enable subsystem/driver shell modules by default 2023-11-20 09:21:40 +01:00
README.rst doc: samples: smbus: Add console highlight to code block 2023-10-18 17:58:52 +03:00
sample.yaml boards: x86: Add intel_ prefix to Elkhart Lake boards 2023-08-15 11:24:35 +00:00

README.rst 

.. zephyr:code-sample:: smbus-shell
   :name: SMBus shell
   :relevant-api: smbus_interface

   Interact with SMBus peripherals using shell commands.

Overview
********

This is a simple SMBus shell sample that allows arbitrary boards with SMBus
driver supported exploring the SMBus communication with peripheral devices.

Building and Running
********************

This sample can be found under :zephyr_file:`samples/drivers/smbus` in the
Zephyr tree.
The sample can be built and run as follows for the ``qemu_x86_64`` board:

.. zephyr-app-commands::
   :zephyr-app: zephyr/samples/drivers/smbus
   :host-os: unix
   :board: qemu_x86_64
   :goals: run
   :compact:

Sample Output
*************

Output from console when application started:

.. code-block:: console

   *** Booting Zephyr OS build zephyr-v3.2.0-804-gfedd72615e82  ***
   Start SMBUS shell sample qemu_x86_64
   uart:~$

List available SMBus shell commands with:

.. code-block:: console

   uart:~$ smbus
   smbus - smbus commands
   Subcommands:
     quick            :SMBus Quick command
                       Usage: quick <device> <addr>
     scan             :Scan SMBus peripheral devices command
                       Usage: scan <device>
     byte_read        :SMBus: byte read command
                       Usage: byte_read <device> <addr>
     byte_write       :SMBus: byte write command
                       Usage: byte_write <device> <addr> <value>
     byte_data_read   :SMBus: byte data read command
                       Usage: byte_data_read <device> <addr> <cmd>
     byte_data_write  :SMBus: byte data write command
                       Usage: byte_data_write <device> <addr> <cmd> <value>
     word_data_read   :SMBus: word data read command
                       Usage: word_data_read <device> <addr> <cmd>
     word_data_write  :SMBus: word data write command
                       Usage: word_data_write <device> <addr> <cmd> <value>
     block_write      :SMBus: Block Write command
                       Usage: block_write <device> <addr> <cmd> [<byte1>, ...]
     block_read       :SMBus: Block Read command
                       Usage: block_read <device> <addr> <cmd>

Scan for available SMBus devices with command:

.. code-block:: console

   uart:~$ smbus scan smbus@fb00
        0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
   00:             -- -- -- -- -- -- -- -- -- -- -- --
   10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
   20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
   30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
   40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
   50: 50 51 52 53 54 55 56 57 -- -- -- -- -- -- -- --
   60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
   70: -- -- -- -- -- -- -- --
   8 devices found on smbus@fb00