Getting Started: Running the “Device – MCHPUSB

1) If using the PICDEM FS USB Demo Board, no hardware related configuration or jumper setting changes should be necessary. The demo board need only be programmed with appropriate firmware.

Configuration 2: PIC18F87J50 PIM + HPC Explorer

1) Before attaching the PIC18F87J50 PIM to the HPC Explorer board, insure that the processor selector switch (S3) is in the “ICE” position as seen in the image below. Failure to so will result in difficulties in getting the PIC18F87J50 PIM to sit properly on the HPC Explorer.

2) Short JP4 on the PIC18F87J50 PIM. This allows the demo board to be powered through bus power.

3) Short JP1 such that the “R” and “U” options are shorted.

4) Before connecting the PIC18F87J50 PIM to the HPC Explorer board, remove all attached cables from both boards. Connect the PIC18F87J50 PIM to the HPC Explorer 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.

Configuration 3: Explorer 16

1) Before attaching the 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 PIM to the Explorer 16 board, remove all attached cables from both boards. Connect the 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.

3a) If using the PIC24FJ64GB004 PIM, please insure that the programming port switch is switched in the PGX1 direction.

4) On the USB PICTail Plus board, short jumper JP1. 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 named “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.

Configuration 4: Low Pin Count USB Development Kit

1) Short pins 2 and 3 of J14. Make sure J12 is left open.

Configuration 5: PIC24F Starter Kit 1

The PIC24F Starter Kit does not require any hardware setup to run this demo. This demo does, however, require the user to change the default selected device in the project before compiling the demo.

1) Open the associated project file for C30

2) In MPLAB Select “Configure->Select Device”

3) In the device list box in the top left corner of that window, select “PIC24FJ256GB106”

Configuration 6: PIC18F46J50 Full Speed USB Demo Board

1) Short JP3 to allow the board to be powered from the USB.

Configuration 7: PIC32 USB Starter Board

No specific hardware configuration is required for this demo.

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 Device – Generic driver” 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).

Please note that when using either the C30 or C32 demo projects you will be required to select the correct processor for the demo board.

1) Open the associated project file

2) In MPLAB Select “Configure->Select Device”

3) In the device list box in the top left corner of that window, select the desired device.

The source code for the driver and some example PC applications can be found at “<Install Directory>\Microchip\USB\Utilities\MCHPUSB Custom Driver\Mpusbapi”

Running the Demo:

Installing the driver

The generic driver (custom class) demo uses a custom class driver. Like any custom driver when first plugged into a computer, a driver needs to be installed. When the device is plugged in to the computer the following window will pop-up:

Continue by selecting either options and clicking next.

If the driver has been installed on the computer before the installation process may complete itself without further action.

If the driver has not been installed before on the computer, then the driver will need to be installed. The Found New Hardware Wizard will be looking for a *.inf file with a matching VID/PID as the newly attached USB device. The driver can be found in the following location: “<Install Directory>\USB Tools\MCHPUSB Custom Driver\MCHPUSB Driver\Release”. Point the install wizard to this directory. The install wizard should then continue and finally complete.

Some example PC applications which interface with the driver can be found at “<Install Directory>\USB Tools\MCHPUSB Custom Driver\Mpusbapi”. PC applications can be written to either directly interface with the custom class USB driver (by using standard I/O functions like CreateFile(), ReadFile(), WriteFile(), CloseHandle()), or indirectly through the use of mpusbapi.dll. Mpusbapi.dll is a dynamic linked library file, which makes the process of interfacing with the custom class USB driver (and therefore, your USB device) somewhat simpler.

Running the demo

Once the driver is installed the device can start to be used. Because this is not a standard driver class that is supported by default in any of the operating systems, a custom application is also required to talk to this device. There are two example applications provided in this distribution. The first is the legacy pdfsusb application. The second is the MCHPUSB PnP (Plug-and-play) demo.

PDFSUSB

The example application can be found in the “<Install Directory>\USB Device - MCHPUSB - Generic Driver Demo\PC Software\Pdfsusb” directory.

When the application is first launched it will look like the following.

Select the “Demo Mode” tab.

In the listbox at the top of the application, select the “PICDEM FS USB…” option. If this option is not available then the device is either not connected to the computer, the driver was not installed correctly, or the firmware programmed into the device was not the correct project needed to interface with the generic driver.

With the listbox selecting the “PICDEM FS USB…” click the connect button. Once the button is clicked the application should start reading the potentiometer and temperature data from the hardware. The application can also change the state of the LEDs. NOTE: the Low Pin Count USB Development Kit does not have an on board temperature sensor. This feature is not currently implemented. Clicking LED3 button will toggle LED D7 on the Explorer 16 board. Clicking LED4 button will toggle LED D8 on the Explorer 16 board. While using Explorer 16 and dsPIC33EP512MU810 or PIC24EP512GU810 PIM, the temperature sensor and potentiometer interface are not suported.

MCHPUSB PnP Demo

The example application can be found in the “<Install Directory>\USB Device - MCHPUSB - Generic Driver Demo\PC Software\Visual C++ 2005 Express” directory.

When the application is launched and the MCHPUSB custom device is not attached, it will look like the following.

Once the device is attached the application will reflect that the device is attached and look like the following. Moving the potentiometer will cause the status bar of the application to move to reflect the current value. While using Explorer 16 with dsPIC33EP512MU810 or PIC24EP512GU810 PIM, the potentiometer interface is not supported.

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 and PICTail are trademarks 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.

SD is a trademark of the SD Association in the U.S.A and other countries