Infineon UART VCOM 1 User manual

AURIX™ TC2xx Microcontroller Training
V1.0.0
UART_VCOM_1
UART communication between PC and device
Please read the Important Notice and Warnings at the end of this document

Scope of work
UART communication via ASCLIN is used to send "Hello World!" from
the device to the computer.
The string "Hello World!“ is sent from the device to the PC via UART. The
string is then visualized in a serial monitor.
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2019-10-17 Copyright © Infineon Technologies AG 2019. All rights reserved.

Introduction
›The Asynchronous/Synchronous Interface (ASCLIN) module enables
asynchronous/synchronous serial communication with external devices.
For this training, asynchronous reception/transmission (UART) is used for
the communication between a PC and an AURIX™device.
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Hardware setup
This code example has been
developed for the board
KIT_AURIX_TC297_TFT_BC-Step.
The board should be connected to
the PC through the USB port (1).
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Implementation
Configure the ASCLIN
Configuration of the ASCLIN module for UART communication is done in the setup
phase by initializing an instance of the IfxAsclin_Asc_Config structure with the
following parameters:
›baudrate –structure to set the actual communication speed in bit/s
›interrupt –structure to set:
–transmit interrupt priority (txPriority)
–typeOfService –defines which service provider is responsible for handling the
interrupt, which can be any of the available CPUs, or the DMA
›pins –structure to set which GPIO port pins are used for the communication
›txBuffer, txBufferSize –to configure the buffer that will hold the outgoing data
The function IfxAsclin_Asc_initModuleConfig() fills the configuration structure with
default values and IfxAsclin_Asc_initModule() initializes the module with the user
configuration.
All the above functions can be found in the iLLD header IfxAsclin_Asc.h.
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Implementation
The UART send function:
›Sending the string “Hello World!” is implemented inside the function
send_UART_message() which is called once after initialization of the ASCLIN
module.
›This function calls IfxAsclin_Asc_write() which is provided by the iLLD header
IfxAsclin_Asc.h.
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Run & Test
In order to see the message, it is required to have a serial monitor (e.g. PuTTY,
HTerm), which has to be configured with the following parameters:
›Port: COMx (e.g. COM8, COM port number depends on the setup)
›Baud rate: 19200
›Data bits: 8
›Parity: None
›Stop bits: 1
After code compilation and flashing the device,
perform the following steps:
›The board must be connected to PC via the USB cable
›Open a serial monitor with the above configuration and connect.
›The board has to be reset using the PORST button
›The string can be observed on the serial monitor
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References
›More code examples can be found on the GIT repository:
›https://github.com/Infineon/AURIX_code_examples
›For additional trainings, visit our webpage:
›https://www.infineon.com/aurix-expert-training
›AURIX™ Development Studio is available online:
›https://www.infineon.com/aurixdevelopmentstudio
›Use the „Import...“ function to get access to more code examples.
›For questions and support, use the AURIX™ Forum:
›https://www.infineonforums.com/forums/13-Aurix-Forum
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2019-10-17 Copyright © Infineon Technologies AG 2019. All rights reserved.

IMPORTANT NOTICE
The information given in this document shall in no
event be regarded as a guarantee of conditions or
characteristics (“Beschaffenheitsgarantie”) .
With respect to any examples, hints or any typical
values stated herein and/or any information
regarding the application of the product, Infineon
Technologies hereby disclaims any and all
warranties and liabilities of any kind, including
without limitation warranties of non-infringement
of intellectual property rights of any third party.
In addition, any information given in this
document is subject to customer’s compliance
with its obligations stated in this document and
any applicable legal requirements, norms and
standards concerning customer’s products and
any use of the product of Infineon Technologies in
customer’s applications.
The data contained in this document is exclusively
intended for technically trained staff. It is the
responsibility of customer’s technical
departments to evaluate the suitability of the
product for the intended application and the
completeness of the product information given in
this document with respect to such application.
For further information on the product,
technology, delivery terms and conditions and
prices please contact your nearest Infineon
Technologies office (www.infineon.com).
WARNINGS
Due to technical requirements products may
contain dangerous substances. For information
on the types in question please contact your
nearest Infineon Technologies office.
Except as otherwise explicitly approved by
Infineon Technologies in a written document
signed by authorized representatives of Infineon
Technologies, Infineon Technologies’ products
may not be used in any applications where a
failure of the product or any consequences of the
use thereof can reasonably be expected to result
in personal injury.
Edition 2019-10
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2019 Infineon Technologies AG.
All Rights Reserved.
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Document reference
UART_VCOM_1
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