SW500008 Microchip Technology, SW500008 Datasheet - Page 62

• Manufacturer Part Number: SW500008
• Description: PICC-18 STD
• Manufacturer: Microchip Technology
• Type: Compilerr
• Series: PIC18r

Specifications of SW500008

• Supported Families: PIC18
• Core Architecture: PIC
• Software Edition: Standard
• Kit Contents: Software And Docs
• Mcu Supported Families: PIC18
• Tool Function: Compiler
• Tool Type: Compiler
• Lead Free Status / RoHS Status: Not applicable / RoHS Compliant
• For Use With/related Products: PIC18 Series
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 015; 778-1001; 778-1001

Supported Data Types and Variables
If a bit-field is declared in a structure that is assigned an absolute address, no storage will be allocated
for the structure. Absolute structures would be used when mapping a structure over a register to allow
a portable method of accessing individual bits within the register.
for each field. For example:
3.4.8.2 Structure and Union Qualifiers
HI-TECH PICC-18 STD supports the use of type qualifiers on structures. When a qualifier is applied
to a structure, all of its members will inherit this qualification. In the following example the structure
is qualified const.
In this case, the structure will be placed into the program space and each member will, obviously, be
read-only. Remember that all members must be initialized if a structure is const as they cannot be
initialized at runtime.
the structure would be positioned into RAM, but each member would be read-only. Compare the
following structure with the above.
48
A structure with bit-fields may be initialised by supplying a comma-separated list of initial values
If the members of the structure were individually qualified const but the structure was not, then
} foo;
struct {
} foo = {1, 8, 0};
const struct {
} record = { 0x55, &i};
struct {
} record = { 0x55, &i};
unsigned
unsigned
unsigned
unsigned
unsigned
unsigned
int number;
int *ptr;
const int number;
int * const ptr;
lo : 1;
hi : 1;
lo : 1;
mid : 6;
hi : 1;
: 6;
C Language Features