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Built-in Functions
PUTC_SEND( )
.
tx_buffer_full( )
Syntax:
value = tx_buffer_full( [ stream ] )
Parameters: stream – optional parameter specifying the stream defined in #USE RS232
Returns:
Function:
TRUE if transmit buffer is full, FALSE otherwise.
Function to determine if there is room in transmit buffer for another character.
Availability: All devices
Requires:
Examples:
Example
Files:
Also See:
#USE RS232
#USE_RS232(UART1,BAUD=9600,TRANSMIT_BUFFER=50)
void main(void) {
char c;
if(!tx_buffer_full())
putc(c);
}
None
_USE_RS232( ), RCV_BUFFER_FULL( ), TX_BUFFER_FULL( ).,
RCV_BUFFER_BYTES( ), GETC( ), PUTC( ), PRINTF( ), SETUP_UART( ).,
PUTC_SEND( )
va_arg( )
Syntax:
va_arg( argptr , type)
Parameters: argptr is a special argument pointer of type va_list
type – This is data type like int or char.
Returns:
Function:
The first call to va_arg after va_start return the value of the parameters after that
specified by the last parameter. Successive invocations return the values of the
remaining arguments in succession.
The function will return the next argument every time it is called.
Availability: All devices.
Requires:
Examples:
#INCLUDE <stdarg.h>
int foo(int num, ...)
{
int sum = 0;
303
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