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PICKIT ? 1 FLASH STARTER KIT
USER ’S GUIDE
Chapter 5. Troubleshooting
5.1
5.2
INTRODUCTION
This chapter describes common problems and possible solutions for solving problems
with the PICkit 1 Flash Starter Kit.
FAQS
5.2.1
Program Does Not Work
Question:
My program does not work. What should I check?
Answer:
1. Are the configuration bits set in the source file? PICkit 1 Flash Starter Kit depends
on having the configuration bits set in the hex file. The assembler uses the
_CONFIG directive. When using the PICkit 1 Flash Starter Kit’s on-board
evaluation socket, configure the internal oscillator. The internal oscillator also
frees up two more pins for general I/O use.
The assembler directive to select the internal oscillator, with all other functions
off, might look like this:
_CONFIG (_INTRC_OSC_NOCLKOUT & _WDT_OFF &_BODEN_OFF&_CP_OFF
&_CPD_OFF)
The following code shows how to set the configuration bits in Hi-Tech C:
_CONFIG(UNPROTECT & BOREN & MCLRDIS & PWRTEN & WDTDIS & INTIO);
2. Are the pins multiplexed with other functions? If so, does the program initialize
the control registers to select the function desired? A common problem occurs
on PORTA where the analog inputs to the ADC are multiplexed with digital
functions. The pins default to analog input. For digital output, write to the ANSEL
register and make the pins digital I/O.
5.2.2
Device Will Not Program
Question:
The device will not program. All writes end with a “checksum verified failed” error
message.
Answer:
1. Are the code protect bits set in the source code file? Currently, the device can
only be code protected by selecting the Tools > Code Protect Device option in
the PICkit 1 user ’s interface.
2. The part may be damaged. Try another device.
? 2004 Microchip Technology Inc.
DS40051D-page 23
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