C Source Code Serial Port Communication Tutorial

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  1. Serial Port Communications Software
  2. C Source Code Serial Port Communication Tutorial Software
  3. Serial Communication In C

A Serial Communications Interface or Universal Asynchronous Receiver-Transmitter (UART) is a serial communications peripheral that implements the asynchronous serial communications protocol.

C source code serial port communication tutorial software

Serial Port Communication Using C Codes and Scripts Downloads Free. This script takes input from the Serial port 'COM4' with the baud rate of 19200 and plots a running graph with the X-axis range of 200. Real time data plot from a serial port This matlab script is for plotting a graph by accessing serial port data in real time. Free VC Port Serial Source Code. Direct2D Vector Graphics Rendering with Visual C, MFC. News: 1 UCanCode Advance E-XD CAD Drawing and Printing Solution. Source Code Solution for C/C,.NET V2020 is released! 2 UCanCode Advance E-XD HMI & SCADA Source Code Solution for C/C,.NET V2020 is released! In this tutorial, I will walk you through how to interface to a serial port on the computer side of things, using Microsoft's. The code examples in this tutorial are in C#, but can be easily transferred to Visual Basic, or Visual C.

The serial communications interface can be used to communicate with several devices such as displays, sensors, data acquisition systems, etc.

The ConnectCore 6 SBC provides access to three UART interfaces on UART expansion connector. This connector provides access to the following interfaces:

  • UART1: 4 wire, RS232 level UART
  • UART3: 4 wire, RS232 level UART
  • UART5: 4 wire, TTL UART shared with XBee interface

Serial Communication read serial port example in C#. The C# Basics beginner course is a free C# Tutorial Series that helps beginning programmers learn the. Here is some sample code which shows how to do it: Creating a Serial Communication on Win32 Marked as answer by Yan-Fei Wei Friday, July 18, 2008 6:43 AM Monday, July 14, 2008 11:18 PM.

These three UART interfaces have software flow control lines (RTS and CTS). UART1 and UART3 have RS232 levels and they are configured in DTE mode (CTS input and RTS output). The UART5 interface has TTL levels and it is configured in DCE mode (CTS output and RTS input).

See the ConnectCore 6 Hardware Reference Manual for information about the available Serial Ports.

Digi adds to Android an API to manage these Serial Ports interfaces. You can configure the connection, send, and receive data among other things. In the Javadoc documentation you can find a complete list of the available methods in this API.

Unless noted, all serial API methods require the com.digi.android.permission.SERIAL permission.

Note If your application does not have the com.digi.android.permission.SERIAL permission it will not have access to any serial port service feature.

Communication

First, a new SerialPortManager object must be instantiated by passing the Android Application Context.

The Serial Port API allows you to:

Example: Serial Port

The Serial Port Sample Application demonstrates the usage of the Serial Port API. In this example you can list all the available Serial ports, configure them, send, and receive data.

You can import the example using Digi's Android Studio plugin. For more information, see Import a Digi sample application. To look at the application source code, go to the GitHub repository.

The Communication Device Class (CDC) is used for implementing virtual communication ports. This example demonstrates a bridge between a Virtual COM Port on the USB Host Computer and an UART port on the evaluation board.

The following picture shows an exemplary connection of the development board and the USB Host Computer.

The Abstract.txt file contained in the Documentation group of the Project window gives you more information on the general setup and the available I/O on the development board.

Open the example project in MDK. The µVision Project window should display a similar project structure:

Source Files

  • VirtualCOM.c contains the main C function that initializes the board hardware and the USB Device Component. Furthermore, it contains the code that exchanges the data internally between the USB and the UART port.
  • The USBD_User_CDC_0.c is an adapted code template that implements all necessary file access functions. Refer to CDC: Communication Device Class (ACM) for details about these template functions.

If you are using RTOS other than CMSIS-RTOS2 RTX5 for your project please make sure to satisfy USB Device Resource Requirements.

You may now build and download the example project to the evaluation board using the µVision commands:

  • Project –> Build target (F7)
  • Flash –> Download (F8)

Serial Port Communications Software

After these steps, the project should start executing on your evaluation kit. In case of errors, refer to the Evaluation Board User's Guide for configuration information.

C source code serial port communication tutorial pdf

Hardware Setup

The setup of the Evaluation Board hardware is described in the Abstract.txt file.

Source

Serial Port Communication Using C Codes and Scripts Downloads Free. This script takes input from the Serial port 'COM4' with the baud rate of 19200 and plots a running graph with the X-axis range of 200. Real time data plot from a serial port This matlab script is for plotting a graph by accessing serial port data in real time. Free VC Port Serial Source Code. Direct2D Vector Graphics Rendering with Visual C, MFC. News: 1 UCanCode Advance E-XD CAD Drawing and Printing Solution. Source Code Solution for C/C,.NET V2020 is released! 2 UCanCode Advance E-XD HMI & SCADA Source Code Solution for C/C,.NET V2020 is released! In this tutorial, I will walk you through how to interface to a serial port on the computer side of things, using Microsoft's. The code examples in this tutorial are in C#, but can be easily transferred to Visual Basic, or Visual C.

The serial communications interface can be used to communicate with several devices such as displays, sensors, data acquisition systems, etc.

The ConnectCore 6 SBC provides access to three UART interfaces on UART expansion connector. This connector provides access to the following interfaces:

  • UART1: 4 wire, RS232 level UART
  • UART3: 4 wire, RS232 level UART
  • UART5: 4 wire, TTL UART shared with XBee interface

Serial Communication read serial port example in C#. The C# Basics beginner course is a free C# Tutorial Series that helps beginning programmers learn the. Here is some sample code which shows how to do it: Creating a Serial Communication on Win32 Marked as answer by Yan-Fei Wei Friday, July 18, 2008 6:43 AM Monday, July 14, 2008 11:18 PM.

These three UART interfaces have software flow control lines (RTS and CTS). UART1 and UART3 have RS232 levels and they are configured in DTE mode (CTS input and RTS output). The UART5 interface has TTL levels and it is configured in DCE mode (CTS output and RTS input).

See the ConnectCore 6 Hardware Reference Manual for information about the available Serial Ports.

Digi adds to Android an API to manage these Serial Ports interfaces. You can configure the connection, send, and receive data among other things. In the Javadoc documentation you can find a complete list of the available methods in this API.

Unless noted, all serial API methods require the com.digi.android.permission.SERIAL permission.

Note If your application does not have the com.digi.android.permission.SERIAL permission it will not have access to any serial port service feature.

First, a new SerialPortManager object must be instantiated by passing the Android Application Context.

The Serial Port API allows you to:

Example: Serial Port

The Serial Port Sample Application demonstrates the usage of the Serial Port API. In this example you can list all the available Serial ports, configure them, send, and receive data.

You can import the example using Digi's Android Studio plugin. For more information, see Import a Digi sample application. To look at the application source code, go to the GitHub repository.

The Communication Device Class (CDC) is used for implementing virtual communication ports. This example demonstrates a bridge between a Virtual COM Port on the USB Host Computer and an UART port on the evaluation board.

The following picture shows an exemplary connection of the development board and the USB Host Computer.

The Abstract.txt file contained in the Documentation group of the Project window gives you more information on the general setup and the available I/O on the development board.

Open the example project in MDK. The µVision Project window should display a similar project structure:

Source Files

  • VirtualCOM.c contains the main C function that initializes the board hardware and the USB Device Component. Furthermore, it contains the code that exchanges the data internally between the USB and the UART port.
  • The USBD_User_CDC_0.c is an adapted code template that implements all necessary file access functions. Refer to CDC: Communication Device Class (ACM) for details about these template functions.

If you are using RTOS other than CMSIS-RTOS2 RTX5 for your project please make sure to satisfy USB Device Resource Requirements.

You may now build and download the example project to the evaluation board using the µVision commands:

  • Project –> Build target (F7)
  • Flash –> Download (F8)

Serial Port Communications Software

After these steps, the project should start executing on your evaluation kit. In case of errors, refer to the Evaluation Board User's Guide for configuration information.

Hardware Setup

The setup of the Evaluation Board hardware is described in the Abstract.txt file.

  • Verify all jumper settings on the target hardware.
  • Connect the UART on the development board to your PC (you might need an USB to serial RS232 adapter). Use an USB cable to connect your development board to the Host PC and power up your board.
  • The Welcome to the Found New Hardware Wizard appears. Installation of the driver is described in detail in the Abstract.txt file.

PC Software

The USB Device Virtual COM example can be tested on a Windows PC using a terminal emulation program. Since Hyperterminal in not part of Windows any more, please download an appropriate program for this purpose (such as PuTTY for example). Open the two COM ports 'COMx' and 'COMy'. Any data from 'COMx' will be echoed on 'COMy' and visa versa:

About Host PC driver for Microsoft Windows

The example folder contains two files relevant for driver installation on the Microsoft Windows:

  • Driver setup information file (xxx-vcom.inf) which is used to create a digitally signed driver catalog file (xxx-vcom.cat)
  • Digitally signed driver catalog file (xxx-vcom.cat)

The driver files are provided as an example, the driver setup information file should be adapted and digitally signed driver catalog file should be created from adapted driver setup information file.

Driver setup information file should be adapted in the following way:

C Source Code Serial Port Communication Tutorial Software

  • c251 in Vendor ID VID_c251 entries should be changed to the vendor ID number assigned to your company by the USB organization (c251 Vendor ID is reserved for Keil Software and should not be used)
  • xxxx in Product ID PID_xxxx entries should be changed to the product ID as assigned by your company
  • in [DeviceList.xxx] sections, entries not relevant for the device, should be removed or added as described below:
    • if device is pure CDC class device (not composite) then all entries ending with &MI_xx should be removed
    • if device is a composite device with one or more CDC class instances then entries not ending with &MI_xx should be removed and entries ending with &MI_xx should exist for each CDC class instance (example driver contains entries ending with &MI_00 and &MI_02 which are used for composite device containing two CDC class instances and each instance uses 2 interfaces where MI_00 describes first CDC instance and MI_02 entry describes second CDC instance)
  • [Strings] section should be changed as desired

Serial Communication In C

Note
Vendor ID and Product ID are configured in the USBD_Config_n.c configuration file of the embedded application.
For producing digitally signed driver catalog file please refer to Microsoft Windows documentation.




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