CCS C Compiler Manual PCB / PCM / PCH

Built-in Functions
Parameters:
Returns:
Function:
Availability:
Requires:
Examples:
Example Files:
Also See:
bank is the physical RAM bank 1-3 (depending on the device)
offset is the offset into user RAM for that bank (starts at 0),
8 bit int
Read a data byte from the user RAM area of the specified memory bank. This
function may be used on some devices where full RAM access by auto
variables is not efficient. For example, setting the pointer size to 5 bits on the
PIC16C57 chip will generate the most efficient ROM code. However, auto
variables can not be above 1Fh. Instead of going to 8 bit pointers, you can save
ROM by using this function to read from the hard-to-reach banks. In this case,
the bank may be 1-3 and the offset may be 0-15.
All devices but only useful on PCB parts with memory over 1Fh
and PCM parts with memory over FFh.
Nothing
// See write_bank() example to see
// how we got the data
// Moves data from buffer to LCD
i=0;
do {
c=read_bank(1,i++);
if(c!=0x13)
lcd_putc(c);
} while (c!=0x13);
ex_psp.c
write_bank(), and the "Common Questions and Answers" section for more
information.
read_calibration( )
Syntax:
value = read_calibration (n)
Parameters: n is an offset into calibration memory beginning at 0
Returns:
Function:
Availability:
An 8 bit byte
The read_calibration function reads location "n" of the 14000-calibration
memory.
This function is only available on the PIC14000.
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