Zilog Z8F0130 - Manual (Page 256)

Using the ANSI C-Compiler UM013037-1212
232
Zilog Developer Studio II – Z8 Encore!
User Manual
init_uart
The init_uart function is a Zilog function that selects the specified UART and initial-
izes it for specified settings and returns the error status.
Synopsis
#include

int init_uart(int port, unsigned long freq, unsigned long baud);
Returns
Returns 0 if initialization is successful and 1 otherwise.
Example
#include

#include

void main()

{

init_uart(_UART0,_DEFFREQ,_DEFBAUD);

printf("Hello UART0\n"); // Write to _UART0

}
_DEFFREQ is automatically set from the IDE based on the clock frequency setting in the
Configure Target dialog box. See the Setup section on page 111.
kbhit
The kbhit function is a Zilog function that determines whether there is receive data avail-
able on the selected UART.
Synopsis
#include

unsigned char kbhit( void ) ;
Returns
Returns 1 if there is receive data available on the selected UART; otherwise, it returns 0.
Example
#include

unsigned char hit;

void main()

{

init_uart(_UART0,_DEFFREQ,_DEFBAUD);

hit = kbhit( ) ; // Check if any character available on _UART0

}