Getting Started: Running the “Device – Audio

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

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

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

3) Short JP5 on PIC18F87J50 PIM. This connects the LEDs to RE0 and RE1 pins of the Microcontroller.

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: PIC18F46J50 Full Speed USB Demo Board

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

Configuration 6: PIC32 USB Starter Board

No specific hardware configuration is required for this demo.

Configuration 7: 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 8: PIC18F Starter Kit

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 - Audio - Microphone\Firmware” 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® IDE help available through the help menu of MPLAB IDE (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.

Running the Demo:

This demo uses the selected hardware platform as a USB Microphone Device. The demo emulates a PCM, 16 bits/Sample, 8000 Samples/ second, mono Microphone. Connect the device to the computer. Open a sound recording software package. Each sound recording software interface is different so the following instructions may not apply the to software package you are using. Please refer to the user’s manual for the software package you are using for more details of how to configure that tool for Sound recording.

Using Sound Recorder [Windows Computers]

Open Sound Recorder from Start->Programs->Accessories->Entertainement->Sound Recorder. Click on File-> Properties.

Now the ‘Properties for Sound’ Window gets opened as shown below. Click on ‘Convert Now’ button.

This opens up the ‘Sound Selection’ window as shown below.

Change the ‘Attributes’ to “8.00kHz, 16 Bit, Mono 15kb/sec” in the ‘Sound Selection’ Window.

Click on OK button on the ‘Sound Selection’ Window. Click OK button on the ‘Properties for Sound’ Window.

Click on the Record Button on the Sound Recorder.

At this point you can press the pushbutton on the demo board and it will record a voice that is stored in the USB device. Once you finish with the recording click on the ‘Play’ button to play the recorded voice which can be heard through your computer Speaker.

Push Button

PICDEM FS USB:

PIC18F87J50 PIM:

Explorer 16:

Low pin count USB development kit:

PIC18F46J50 Full Speed USB Demo Board:

PIC32 USB Starter Kit

PIC24F Starter Kit 1:

The PIC24F Starter Kit 1 does not implement the pushbutton for these demos. This functionality is not present in this demo.

PIC18 Starter Kit

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 registered 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.

Macintosh is a trademark of Apple Inc., registered in the U.S. and other countries.