DV164126 Microchip Technology, DV164126 Datasheet - Page 25

• Manufacturer Part Number: DV164126
• Description: KIT DEVELOPMENT USB W/PICKIT 2
• Manufacturer: Microchip Technology

Specifications of DV164126

• Main Purpose: Interface, USB 2.0 Slave
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: PIC18F13K50, PIC18F14K50
• Primary Attributes: Full Speed (12Mbps), MCU Based
• Secondary Attributes: 4 Labs: Enumeration, HID Mouse, HID Keyboard, CDC Serial Emulator
• Silicon Manufacturer: Microchip
• Silicon Core Number: PIC18F14K50, PIC18F13K50
• Core Architecture: PIC
• Core Sub-architecture: PIC18
• Silicon Family Name: Piccolo
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

© 2008 Microchip Technology Inc.
EXAMPLE 2-7:
Note that the HID mouse transmits in 3-byte packets. The format of this packet is as
follows:
• This byte is typically used to identify mouse buttons. Since this application does
• The second and third bytes represent horizontal (X) and Vertical (Y)
Compile the project. There should be no errors.
Testing the Application
8. Ensure that the Low Pin Count USB Development Board is configured as in Lab 1.
9. Connect the PICkit 2 Programmer and open the PICkit 2 programming software.
10. Navigate to the .hex file for this lab and download to the PIC18F14K50.
11. Disconnect the PICkit 2 and connect the Low Pin Count USB Demo Board to the
12. The device should enumerate and the LEDs on the board flash in accordance
13. Pressing the pushbutton should start and subsequently stop the mouse pointer
The user is encouraged to experiment with this application by altering the length of time
that the mouse pointer moves until a directional change or altering the values in the
ROM signed char dir_table[]={-4,-4,-4, 0, 4, 4, 4, 0};
not require any mouse clicks, this byte is always zero.
displacements.
if (emulate_mode == TRUE)
else
Host PC port.
with the BlinkUSBStatus() discussed in the self-directed course.
moving in a circle on the Host PC screen.
{
}
{
}
if(HIDTxHandleBusy(lastTransmission) == 0)
{
}
//go 14 times in the same direction before changing
if (movement_length > 14)
{
}//end if (movement_length > 14)
//Send the 3 byte packet over USB to the host.
lastTransmission = HIDTxPacket(HID_EP, (BYTE*)hid_report_in,
0x03);
buffer[0] = 0;
buffer[1] = dir_table[vector & 0x07];
//X-Vector
buffer[2] = dir_table [(vector+2) & 0x07];
//Y-Vector
// go to the next direction in the table vector++;
//reset the counter for when to change again movement_length
//don't move the mouse
buffer[0] = buffer[1] = buffer[2] = 0;
//copy over the data to the HID buffer
hid_report_in[0] = buffer[0];
hid_report_in[1] = buffer[1];
hid_report_in[2] = buffer[2];
//increment the counter to change the data sent
movement_length++;
= 0;
USER DEFINED FUNCTIONAL CODE FOR
EMULATE_MOUSE()
DS41356A-page 21