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MPLAB Xpress Boards feature the ability to communicate data serially over the USB connection with any further hardware.This communication is enabled by a second MCU with USB capabilities that populates the board along with the target MCU. This second MCU with USB performs the following USB tasks:
USB Mass Storage Device (MSD) Class: Receives .hex files from the host PC and then programs the target device using Microchip Technology’s In-Circuit Serial Programming™ (ICSP™) technology.
Note: Hardware debugging is not available.
USB Communications Device Class (USB CDC): Translates EUSART data transmissions from the target MCU and transmits over the USB connection to the host computer.
Using the latter CDC configuration enables the target MCU to send and receive information through the second MCU with USB capabilities to an available USB port on a host computer. Terminal emulation software (see links in the Equipment Needed section at the beginning of this manual) running on the host computer connected to the associated COM Port can then be used to display information from the target MCU or allow the user to send commands back to the Microcontroller.
This content of this document was developed using the following tools:
MPLAB Xpress Development Board: http://www.microchip.com/mplab/mplab-xpress/mplab-xpress-evaluation-boards
USB cable type A to type micro-B
MPLAB Xpress IDE : http://www.microchip.com/mplabxpress
FREE Terminal Emulation Software: • Tera Term (Windows only): www.teraterm.org
CoolTerm (Windows, Linux, MAC OS): http://freeware.the-meiers.org/
Note: The RX and TX pins may differ depending on the specific MPLAB Xpress Board used. * For more information on determining the RX and TX pins please refer to the post: https://mplabxpress.microchip.com/mplabcloud/Example/Details/373#
//Add your application codeand add the following line of code
printf("Hello from your Xpress Board!\n\r");
*Note that the COM port number will vary from that shown below.
If using CoolTerm, open the **Connection>Options… **dialog and configure the serial port at the 9600 baud rate that was configured earlier in the project when configuring the EUSART in MCC.
Click OK to continue
Once communication is established the terminal window should display the string in the printf() added to main.c earlier in the project.
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