CCS C Compiler Manual PCB / PCM / PCH

Built-in Functions
Function:
Availability:
Requires:
Examples:
Example Files:
Also See:
This function prints out to STDERR the supplied string and a description of the
last system error (usually a math error).
All devices.
#USE RS232, #INCLUDE
x = sin(y);
if(errno!=0)
perror("Problem in find_area");
None
RS232 I/O Overview
port_x_pullups ( )
Syntax:
Parameters:
Returns:
Function:
Availability:
Requires:
Examples:
Example Files:
port_a_pullups (value)
port_b_pullups (value)
port_d_pullups (value)
port_e_pullups (value)
port_j_pullups (value)
port_x_pullups (upmask)
port_x_pullups (upmask, downmask)
value is TRUE or FALSE on most parts, some parts that allow pullups to
be specified on individual pins permit an 8 bit int here, one bit for each
port pin.
upmask for ports that permit pullups to be specified on a pin basis. This
mask indicates what pins should have pullups activated. A 1 indicates the
pullups is on.
downmask for ports that permit pulldowns to be specified on a pin basis.
This mask indicates what pins should have pulldowns activated. A 1
indicates the pulldowns is on.
undefined
Sets the input pullups. TRUE will activate, and a FALSE will deactivate.
Only 14 and 16 bit devices (PCM and PCH). (Note: use
SETUP_COUNTERS on PCB parts).
Nothing
port_a_pullups(FALSE);
ex_lcdkb.c, kbd.c
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