Example Summary

Example that uses the UART2 driver in callback mode to echo back to the console.

Peripherals & Pin Assignments

When this project is built, the SysConfig tool will generate the TI-Driver configurations into the ti_drivers_config.c and ti_drivers_config.h files. Information on pins and resources used is present in both generated files. Additionally, the System Configuration file (*.syscfg) present in the project may be opened with SysConfig’s graphical user interface to determine pins and resources used.

• CONFIG_GPIO_LED_0 - Indicates the UART2 driver was initialized within mainThread().
• CONFIG_UART2_0 - Used to echo characters from host serial session.

BoosterPacks, Board Resources & Jumper Settings

For board specific jumper settings, resources and BoosterPack modifications, refer to the Board.html file.

If you’re using an IDE such as Code Composer Studio (CCS) or IAR, please refer to Board.html in your project directory for resources used and board-specific jumper settings.

The Board.html can also be found in your SDK installation:

<SDK_INSTALL_DIR>/source/ti/boards/<BOARD>

Example Usage

• Open a serial session (e.g. PuTTY, etc.) to the appropriate COM port.
  • The COM port can be determined via Device Manager in Windows or via ls /dev/tty* in Linux.

The connection should have the following settings:

    Baud-rate:  115200
    Data bits:       8
    Stop bits:       1
    Parity:       None
    Flow Control: None

• Run the example. CONFIG_GPIO_LED_0 turns ON to indicate driver initialization is complete.

• The target echoes back any character that is typed in the serial session.

• If the serial session is started before the target completes initialization, the following is displayed: Echoing characters:

Application Design Details

• This example shows how to initialize the UART2 driver in callback read mode and blocking write mode and echo characters back to a console.

• A single thread, mainThread, reads a character from CONFIG_UART2_0 and writes it back.

FreeRTOS:

• Please view the FreeRTOSConfig.h header file for example configuration information.