SW006010 Microchip Technology, SW006010 Datasheet - Page 67

• Manufacturer Part Number: SW006010
• Description: MPLAB 17C SOFTWARE
• Manufacturer: Microchip Technology

Specifications of SW006010

• Tool Function: Compiler
• Tool Type: Compiler
• Processor Series: PIC17C
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: MPLAB®
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

7.1
7.2
7.3
 2002 Microchip Technology Inc.
INTRODUCTION
HIGHLIGHTS
PROCESSOR HEADER FILE
This section discusses device support files used in support of MPLAB C17
compilation.
Items discussed in this chapter are:
• Processor Header File
• Register Definitions File
• Using SFRs
The processor header file is a C file that contains external declarations for the special
function registers. Register definitions are found in the Register Definitions File
(7.4 “Register Definitions File”).
In addition to register declarations, the header file defines in-line assembly macros
(Table 7-1) and interrupt install macros.
There are certain instructions on PICmicro MCUs that may need to execute from the
C code. They can be included as in-line assembler instructions but for convenience
they are also available as macros in C. They are listed in the following table:
TABLE 7-1:
Nop()
ClrWdt()
Sleep()
Reset()
Rlcf(var,dest,access)
Rlncf(var,dest,access)
Rrcf(var,dest,access)
Rlncf(var,dest,access)
Swapf(var,dest,access)
Note: ‘var’ must be an 8-bit quantity (e.g., char) and not located on the stack.
Chapter 7. Device Support Files
Instruction Macro
INSTRUCTION MACRO ACTIONS
MPLAB
Executes a no operation (NOP).
Clears the watchdog timer (CLRWDT).
Executes a SLEEP instruction.
Executes a device reset (RESET).
Rotates ‘var’ to the left through the carry bit.
Rotates ‘var’ to the left without going through the
carry bit.
Rotates ‘var’ to the right through the carry bit.
Rotates ‘var’ to the right without going through the
carry bit.
Swaps the upper and lower nibble of ‘var’.
®
C17 C COMPILER
USER’S GUIDE
Action
apRNOVM^-page 61
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