CCS C Compiler Manual PCB / PCM / PCH

Built-in Functions
take much longer time.
Value is a 1 or a 0.
Returns:
Function:
Availability:
Requires:
undefined
Outputs the specified value (0 or 1) to the specified I/O pin. The
method of setting the direction register is determined by the last
#USE *_IO directive.
All devices.
Pin constants are defined in the devices .h file
Examples:
output_bit( PIN_B0, 0);
// Same as output_low(pin_B0);
output_bit( PIN_B0,input( PIN_B1 ) );
// Make pin B0 the same as B1
output_bit( PIN_B0,shift_left(&data,1,input(PIN_B1)));
// Output the MSB of data to
// B0 and at the same time
// shift B1 into the LSB of data
int16 i=PIN_B0;
ouput_bit(i,shift_left(&data,1,input(PIN_B1)));
//same as above example, but
//uses a variable instead of a constant
Example Files: ex_extee.c with 9356.c
Also See:
input(), output_low(), output_high(), output_float(), output_x(), #USE
FIXED_IO, #USE FAST_IO, #USE STANDARD_IO, General Purpose I/O
output_drive( )
Syntax:
Parameters:
Returns:
Function:
Availability:
Requires:
output_drive(pin)
Pins are defined in the devices .h file. The actual value is a bit
address. For example, port a (byte 5 ) bit 3 would have a value of 5*8+3 or
43 . This is defined as follows: #DEFINE PIN_A3 43 .
undefined
Sets the specified pin to the output mode.
All devices.
Pin constants are defined in the devices.h file.
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