Infineon UART VCOM 1 Manual de usuario

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.

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.

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).

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.

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.

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

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

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

Do you have a question about this

document?

Email: erratum@infineon.com

Document reference

UART_VCOM_1

Trademarks

All referenced product or service names and trademarks are the property of their respective owners.

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