1.1 Console Debug System Service using UART

This example application demonstrates the UART based console and debug system service.

Description

  • The application example first demonstrates the various debug system service macros
  • It then demonstrates the console related APIs
  • The application asks the user to enter a character on the console which is echoed back using the console system service read/write APIs

Downloading and Building the Application

To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.

Path of the application within the repository is apps/system/console_debug/sys_console_debug_uart_read_write/firmware.

To build the application, refer to the following table and open the project using its IDE.

Project NameDescription
pic32mz_w1_curiosity.XMPLABX project for PIC32MZ W1 Curiosity Board

Setting Up the Hardware

The following table shows the target hardware for the application projects.

Project NameDescription
pic32mz_w1_curiosity.XPIC32MZ W1 Curiosity Board

Setting Up PIC32MZ W1 Curiosity Board

  • Connect micro USB cable to the ‘USB Debug’ connector(J302) on the board to the computer
  • On the GPIO Header (J207), connect U1RX (PIN 13) and U1TX (PIN 23) to TX and RX pin of any USB to UART converter like USB UART click board respectively

Running the Application

  1. Open the Terminal application (Ex.:Tera term) on the computer
  2. Connect to the EDBG Virtual COM port and configure the serial settings as follows:
    • Baud : 115200
    • Data : 8 Bits
    • Parity : None
    • Stop : 1 Bit
    • Flow Control : None
  3. Build and Program the application using its IDE
  4. Observe the following output on the terminal
    • First few prints demonstrate the output from the debug system service APIs
    • It then prints the free space available in the receive buffer
    • It then asks the user to enter 10 characters
  5. After entering 10 characters, observe the following output on the terminal
    • The output first prints the free space available in the receive buffer
    • Since 10 characters are pending to be read out from the receive buffer, the free space in the receive buffer is reduced by 10
    • After this, it prints the received characters on the terminal
    • Application then waits for the transmit buffer to become empty
    • Once empty, the application prints the free space available in the transmit buffer, which should be same as the size of the transmit buffer configured in MHC minus 1
  6. After this, the demonstration asks the user to enter a character, and echoes it back on the terminal.
    • LED toggles every-time the character is printed on the terminal
Refer to the following table for LED name:
BoardLED Name
PIC32MZ W1 Curiosity BoardRED LED