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zephyr/samples/subsys/usb_c/sink
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Sam Hurst 6984162e92 samples: subsys: usb_c: sink: Add USBC_CSM_SINK_ONLY Config to prj.conf 
Add CONFIG_USBC_CSM_SINK_ONLY=y to Sink's sample prj.conf.
This selects the Sink only Connection state machine
for the Sink sample and it explicitly show the user
of the Sink sample how the connection state machines are
selected.

Signed-off-by: Sam Hurst <sbh1187@gmail.com>
2023-01-11 18:32:43 +01:00
..
boards
src samples: subsys: usb_c: sink: Add missing policy notifications 2023-01-05 10:34:06 +01:00
CMakeLists.txt
prj.conf samples: subsys: usb_c: sink: Add USBC_CSM_SINK_ONLY Config to prj.conf 2023-01-11 18:32:43 +01:00
README.rst usb-c: Generate USB-C connector VIF policies XML file 2022-12-02 08:46:04 -06:00
sample.yaml

README.rst 

.. _usb-c-sink-sample:

Basic USB-C SINK
################

Overview
********

This example demonstrates how to create a USB-C Power Delivery application and
how to generate USB VIF policies in XML format using the USB-C subsystem. The
application implements a USB-C Sink device.

After the USB-C Sink device is plugged into a Power Delivery charger, it
negotiates with the charger to provide 5V@100mA and displays all
Power Delivery Objects (PDOs) provided by the charger.

.. _usb-c-sink-sample-requirements:

Requirements
************
The TCPC device used by the sample is specified in the devicetree
node that's compatible with ``usb-c-connector``.
The sample has been tested on :ref:`b_g474e_dpow1_board` and
:ref:`stm32g081b_eval_board`. Overlay files for the two boards
are provided.

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

Build and flash as follows, changing ``b_g474e_dpow1`` for your board:

.. zephyr-app-commands::
   :zephyr-app: samples/subsys/usb-c/sink
   :board: b_g474e_dpow1
   :goals: build flash
   :compact:

Connect a charger and see console output:

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

.. code-block:: console

 Unattached.SNK
 AttachWait.SNK
 Attached.SNK
 PE_SNK_Startup
 PRL_INIT
 PRL_HR_Wait_for_Request
 PRL_Tx_PHY_Layer_Reset
 PRL_Tx_Wait_for_Message_Request
 PE_SNK_Discovery
 PE_SNK_Wait_For_Capabilities
 RECV 4161/4 [0]0a01912c [1]0002d12c [2]0004b12c [3]000640e1
 PE_SNK_Evaluate_Capability
 PE_SNK_Select_Capability
 PRL_Tx_Wait_for_PHY_response
 PWR 3A0

 RECV 0363/0
 PRL_Tx_Wait_for_Message_Request
 PE_SNK_Transition_Sink
 RECV 0566/0
 Source Caps:
 PDO 0:
        Type:              FIXED
        Current:           3000
        Voltage:           5000
        Peak Current:      0
        Uchunked Support:  0
        Dual Role Data:    1
        USB Comms:         0
        Unconstrained Pwr: 1
        USB Susspend:      0
        Dual Role Power:   0
 PDO 1:
        Type:              FIXED
        Current:           3000
        Voltage:           9000
        Peak Current:      0
        Uchunked Support:  0
        Dual Role Data:    0
        USB Comms:         0
        Unconstrained Pwr: 0
        USB Susspend:      0
        Dual Role Power:   0
 PDO 2:
        Type:              FIXED
        Current:           3000
        Voltage:           15000
        Peak Current:      0
        Uchunked Support:  0
        Dual Role Data:    0
        USB Comms:         0
        Unconstrained Pwr: 0
        USB Susspend:      0
        Dual Role Power:   0
 PDO 3:
        Type:              FIXED
        Current:           2250
        Voltage:           20000
        Peak Current:      0
        Uchunked Support:  0
        Dual Role Data:    0
        USB Comms:         0
        Unconstrained Pwr: 0
        USB Susspend:      0
        Dual Role Power:   0
 PE_SNK_Ready