doc: update the serial port part of UP2
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@ -19,16 +19,30 @@ SoCs. Both have been confirmed to work with ACRN.
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Connecting to the serial port
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Connecting to the serial port
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=============================
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=============================
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The UP2 board has two serial ports. Please refer to the `UP2
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The UP2 board has two serial ports. The following figure shows the UP2 board's
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specifications <http://www.up-board.org/upsquared/specifications-up2/>`_
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40-pin HAT connector we'll be using as documented in the `UP2 Datasheet
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for more information. We'll access the serial port through the I/O pins
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<https://up-board.org/wp-content/uploads/datasheets/UP-Square-DatasheetV0.5.pdf>`_.
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in the 40-pin HAT connector using a `USB TTL serial cable
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<http://www.ftdichip.com/Products/USBTTLSerial.htm>`_. Connect pin 6
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.. image:: images/the-bottom-side-of-UP2-board.png
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(``GND``), pin 8 (``TX``) and pin 10 (``RX``) of the HAT connector to
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:align: center
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respectively the ``GND``, ``RX`` and ``TX`` pins of your USB serial
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cable. Plug the USB TTL serial cable into your PC and use a console
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We'll access the serial port through the I/O pins in the
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emulation tool such as ``minicom`` or ``putty`` to communicate with the
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40-pin HAT connector using a `USB TTL serial cable
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UP2 board for debugging.
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<http://www.ftdichip.com/Products/USBTTLSerial.htm>`_,
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and show how to connect a serial port with
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``PL2303TA USB to TTL serial cable`` for example:
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.. image:: images/USB-to-TTL-serial-cable.png
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:align: center
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Connect pin 6 (``Ground``), pin 8 (``UART_TXD``) and pin 10 (``UART_RXD``) of the HAT
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connector to respectively the ``GND``, ``RX`` and ``TX`` pins of your
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USB serial cable. Plug the USB TTL serial cable into your PC and use a
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console emulation tool such as ``minicom`` or ``putty`` to communicate
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with the UP2 board for debugging.
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.. image:: images/the-connection-of-serial-port.png
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:align: center
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Software setup
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Software setup
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**************
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**************
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