Installation and Operation
FIGURE 2-3:
MCP46XX PICtail? Plus Daughter Board Layout with Default Jumper Settings
Note:
2.3.2
This is the jumper configuration that the board should be shipped with.
The Firmware
The supplied PIC24FJ128A010 firmware is written in 'C' for the Microchip 'C' Compiler.
The program is written using Microchip's released I2C library routines.
There are two program modes of operation, determined by the state of the S3 switches
after a device reset. Program one will generate a saw wave on Wiper 1 pin (VW1), while
program two will allow the user to control the value of the Wiper 1 register with the S4
and S6 switches. If it is desired to save that setting, the S5 switch can be depressed to
copy the value in the Volatile Wiper 1 register to the Non-Volatile Wiper 1 register. So
on any POR/BOR event the volatile Wiper 1 register will be loaded with the value of the
non-volatile Wiper 1 register.
? 2009 Microchip Technology Inc.
DS51804A-page 13
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