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zephyr/boards/riscv/it82xx2_evb/doc/index.rst

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.. _it82xx2_evb:
ITE IT82XX2 series
######################
Overview
********
The IT82XX2 is a 32-bit RISC-V microcontroller.
And a highly integrated embedded controller with system functions.
It is suitable for mobile system applications. The picture below is
the IT82202 development board (also known as it82xx2_evb) and its debug card.
.. figure:: it82xx2_evb_and_debug_card.jpg
:align: center
:alt: IT82202 EVB
To find out more about ITE, visit our World Wide Web at:`ITE's website`_
Hardware
********
The IT82XX2 series contains different chip types(ex, it82202, it82302),
and they support different hardware features.
Listing the IT82202 hardware features as following:
- RISC-V RV32IMAFC instruction set
- 4KB instruction cache size
- 256KB SRAM in total
- Built-in 32.768 kHz clock generator
- Embedded Flash, 512K/1024K-byte e-flash
- eSPI, SSPI, SPI slave, BRAM, KBC, PECI, UART
- GPIO, PWM, ADC, INTC, WUC, Timer, Watchdog, KB scan, JTAG
- Support 6 Voltage Comparator
- Support Cryptographic Engine
- 6 SMBus channels, with 6 DMA controller, compatible with I2C
- USB 2.0 Full-speed Controller
- USB Type-c CC Logic
- USB Power Delivery
Supported Features
==================
currently supports the following hardware features:
.. list-table:: Supported Features
:header-rows: 1
:widths: auto
* - Interface
- Controller
- Driver/Component
* - NVIC
- on-chip
- interrupt controller
* - FLASH
- on-chip
- flash controller
* - PINCTRL
- on-chip
- pin controller
* - ESPI
- on-chip
- espi
* - PECI
- on-chip
- peci
* - UART
- on-chip
- serial
* - GPIO
- on-chip
- gpio
* - PWM
- on-chip
- pwm
* - ADC
- on-chip
- adc
* - TIMER
- on-chip
- timer
* - WATCHDOG
- on-chip
- watchdog
* - KSCAN
- on-chip
- kscan
* - SENSOR
- on-chip
- voltage comparator
* - I2C
- on-chip
- i2c
Other hardware features are not currently supported by Zephyr.
The default configuration can be found in the
:zephyr_file:`boards/riscv/it82xx2_evb/it82xx2_evb_defconfig` Kconfig file.
Programming and debugging on it82202
************************************
In order to upload the application to the device,
you'll need our flash tool and Download board.
You can get them at: `ITE's website`_.
Wiring
=======
#. Connect the Download Board to your host computer using the USB cable.
#. Connect the it82xx2_evb to the evolution motherboard.
#. Connect the Download Board J5 to J41 on the evolution motherboard.
#. Connect the USB to UART wire to J33 on the evolution motherboard.
.. image:: it82xx2_evb_wiring.jpg
:align: center
:alt: it82xx2_evb wiring
.. note:: Be careful during connection!
Use separate wires to connect I2C pins with pins on the it82xx2_evb board.
Wiring connection is described in the table below.
+-------------+---------------+
| J5 | it82xx2_evb |
| Connector | J41 Connector |
+=============+===============+
| 2 | E0 |
+-------------+---------------+
| 3 | E7 |
+-------------+---------------+
| 4 | GND |
+-------------+---------------+
For USB to UART cable, connect the evolution motherboard as below:
+-------------+---------------+
| USB to UART | Evolution |
| cable | motherboard |
| | J33 Connector |
+=============+===============+
| RX | B0 |
+-------------+---------------+
| TX | B1 |
+-------------+---------------+
| GND | GND |
+-------------+---------------+
Building
========
#. Build :ref:`hello_world` application as you would normally do
(see :`Zephyr Getting Started Guide`_):.
.. zephyr-app-commands::
:board: it82xx2_evb
:zephyr-app: samples/hello_world
:goals: build
#. The file :file:`zephyr.bin` will be created by west.
Flashing
========
Windows
--------
Use the winflash tool to program a zephyr application
to the it82xx2 board flash.
#. Open the winflash tool and make sure the order you open the switch is right.
First, turn on the Download board switch.
Second, turn on the it82xx2_evb board switch.
Then, configure your winflash tool like below.
.. figure:: WinFlashTool_P2.jpg
:align: center
.. figure:: WinFlashTool_P4.jpg
#. Using the winflash tool flash ``zephyr.bin`` into your ITE board.
First, click the ``Load`` button and select your ``zephyr.bin`` file.
Second, click ``run`` to flash the image into board.
.. figure:: WinFlashTool_P3.jpg
:align: center
#. At this point, you have flashed your image into ITE board and
it will work if you turn on the ITE board. You can use a terminal program
to verify flashing worked correctly.
For example, open device manager to find the USB Serial Port(COM4) and use your
terminal program to connect it(Speed: 115200).
.. figure:: WinFlashTool_P1.jpg
:align: center
#. Turn on the it82xx2_evb board switch, you should see ``"Hello World! it82xx2_evb"``
sent by the board. If you don't see this message, press the Reset button and the
message should appear.
Ubuntu
--------
#. Run your favorite terminal program to listen for output.
Under Linux the terminal should be :code:`/dev/ttyUSB0`. Do not close it.
For example:
.. code-block:: console
$ minicom -D /dev/ttyUSB0 -b 115200
#. Open a second terminal window and use the Linux flash tool to flash your board.
.. code-block:: console
$ sudo ~/itetool/ite -f build/zephyr/zephyr.bin
.. note:: The source code of ITE tool can be downloaded here:
https://www.ite.com.tw/uploads/product_download/itedlb4-linux-v106.tar.bz2
#. Split first and second terminal windows to view both of them.
You should see ``"Hello World! it82xx2_evb"`` in the first terminal window.
If you don't see this message, press the Reset button and the message should appear.
Debugging
=========
it82xx2_evb board can be debugged by connecting USB to UART. We can write commands and
read messages through minicom in the Ubuntu terminal.
Troubleshooting
===============
#. If the flash tool reports a failure, re-plug the 8390 Download board or
power cycle the it82xx2_evb board and try again.
References
==========
.. target-notes::
.. _ITE's website: https://www.ite.com.tw/zh-tw/product/view?mid=169
.. _Zephyr Getting Started Guide: https://docs.zephyrproject.org/latest/getting_started/index.html
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