Getting Started: Running the “Host – CDC – Serial Demo”

Required Hardware: 1

Configuration 1: Explorer 16. 1

Configuring the Hardware: 1

Configuration 1: Explorer 16. 1

Firmware. 3

Running the Demo. 4

Limitations. 4

Trademarks: 4

## Required Hardware:

To run this project, you will need one of the following sets of hardware:

### Configuration 1: Explorer 16

PIC24FJ256GB110 Plug-In-Module (PIM) (MA240014)

Explorer 16 (DM240001)

USB PICtail™ Plus Daughter Card (AC164131)

## Configuring the Hardware:

This section describes how to set up the various configurations of hardware to run this demo.

Configuration 1: PIC24FJ256GB110 PIM + Explorer 16

### Configuration 1: Explorer 16

1) Before attaching the PIC24FJ256GB110 PIM to the Explorer 16 board, insure that the processor selector switch (S2) is in the “PIM” position as seen in the image below.

2) Short the J7 jumper to the “PIC24” setting

3) Before connecting the PIC24FJ256GB110 PIM to the Explorer 16 board, remove all attached cables from both boards. Connect the PIC24FJ256GB110 PIM to the Explorer 16 board. Be careful when connecting the boards to insure that no pins are bent or damaged during the process. Also insure that the PIM is not shifted in any direction and that all of the headers are properly aligned.

4) On the USB PICTail Plus board, short jumpers JP2 and JP3. Remove all other shorts on the board.

5) Connect the USB PICTail Plus board to either of the female PICTail Plus connectors or on the card edge connector (J9) at the edge of the Explorer 16 board.

Note: When using the HID bootloader for PIC32, it is important to modify the procdefs.ld file to relocate the sections of code that will hold the bootloader and those sections that will hold the user application. Example modified procdefs.ld files have been provided with each project. This file is currently names “Procdefs.ld.boot”. When using the example project with the bootloader it is required to remove the “.boot” section of the file. This will allow MPLAB to use this file instead of the default linker file. Once the linker file is renamed, however, the project will no longer work without the bootloader. Please rename the file in order to get the project working again with PIC32.

Firmware:

To run this project, you will need to load the corresponding firmware into the devices. There are two methods available for loading the demos: Precompiled demos and source code projects.

Precompiled Demos are available in the “<Install Directory>\USB – Precompiled Demos” folders. Each demo should be prefaced with the hardware platform it is compiled for. Select the file that matches the hardware that you have and the demo that you want to run. For more information about how to load a precompiled project, please see the “Getting Started – Loading a precompiled demo” guide.

The source code for this demo is available in the “<Install Directory>\USB Host – CDC – Serial Demo” directory. In this directory you will find all of the user level source and header files as well as project and workspace files for each of the hardware platforms. Find the project (*.mcp) or workspace (*.mcw) file that corresponds to the hardware platform you wish to test. Compile and program the demo code into the hardware platform. For more help on how to compile and program projects, please refer to the MPLAB® help available through the help menu of MPLAB (Help->Topics…->MPLAB IDE).

Running the Demo:

This demo will require two devices to run. One will act as the USB host and the other will run the USB peripheral.

Program the peripheral with one of the available CDC device demos (“USB Device – CDC – Serial Emulation” or “USB Device – CDC – Basic Demo”). Alternatively, a non-Microchip CDC device can also be used. Program the host with the firmware found in the “USB Host – CDC – Generic Serial demo” folder.

Power the host. Plug in the peripheral device. The LCD screen should now update with the any data that the peripheral sends. If the SW6 button is pressed (see below) then a test string is sent to the peripheral.

Note: when bootloading this application using the HID bootloader, please make sure that the “Allow Configuration Word Programming” box is checked. This is required to be able to program the interrupt vectors on PIC24 products. As this demo requires interrupts it will not work without this feature enabled.

Limitations

The CDC host is currently limited to Abstract Control Model (ACM) devices only.

## Trademarks:

The Microchip name and logo, the Microchip logo, MPLAB, and PIC are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

PICDEM is a trademark of Microchip Technology Incorporated in the U.S.A. and other countries.

Microsoft, Windows, and Windows Vista are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.