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PCD
None
Relevant Interrupts :
INT_LOWVOLT
Interrupt fires on low voltage detect
Relevant Include Files:
None, all functions built-in
Relevant getenv() parameters:
None
Example Code:
For PIC18F8722
setup_low_volt_detect
(LVD_36|LVD_TRIGGER_ABOVE); //sets the trigger level as 3.6 volts and
// trigger direction as above. The interrupt
//if enabled is fired when the voltage is
//above 3.6 volts.
PMP/EPMP
The Parallel Master Port (PMP)/Enhanced Parallel Master Port (EPMP) is a parallel 8-bit/16-bit
I/O module specifically designed to communicate with a wide variety of parallel devices. Key
features of the PMP module are:
· 8 or 16 Data lines
· Up to 16 or 32 Programmable Address Lines
· Up to 2 Chip Select Lines
· Programmable Strobe option
· Address Auto-Increment/Auto-Decrement
· Programmable Address/Data Multiplexing
· Programmable Polarity on Control Signals
· Legacy Parallel Slave(PSP) Support
· Enhanced Parallel Slave Port Support
· Programmable Wait States
Relevant Functions:
This will setup the PMP/EPMP module for various mode and
specifies which address lines to be used.
setup_psp
(options,address_mask)
This will setup the PSP module for various mode and specifies
which address lines to be used.
setup_pmp_csx(options,[offset]) Sets up the Chip Select X Configuration, Mode and Base
Address registers
setup_psp_es(options)
Sets up the Chip Select X Configuration and Mode registers
Write the data byte to the next buffer location.
This will write a byte of data to the next buffer location or will
46
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