User manual

MPLAB
®
PM3 User’s Guide
DS51464C-page 68 © 2006 Microchip Technology Inc.
7.5.4.2 USB COMMUNICATIONS
To use USB communications between the PC and the MPLAB PM3 device
programmer, select the
USB port (Figure 7-7). Click OK.
FIGURE 7-7: USB PORT
To make sure the port is set up properly, follow the instructions in the “For USB
Communications” subsection in Section 2.3.1 “Installing the Communications
Cable”.
7.5.4.3 SWITCHING THE COMMUNICATION MODE
If MPLAB PM3 is enabled in one mode of communication (USB or serial) and you wish
to switch to the other mode, do the following:
1. Deselect the programmer in MPLAB IDE (Programmer>Select
Programmer>None).
2. Turn the MPLAB PM3 programmer off and physically change the
communications cable connection. If not already done, install the proper drivers.
3. Turn the MPLAB PM3 programmer back on.
4. Reselect the programmer (Programmer>Select Programmer>MPLAB PM3
).
5. Select the other mode of communication (Programmer>Settings
,
Communications tab).
6. Enable the programmer (Programmer>Enable Programmer
).
CAUTION
Do not allow the Windows OS to pick a USB driver. Follow the procedure specified
in Section 2.2 “Installing MPLAB PM3 Software”.