Zilog ZUSBOPTS Bedienungsanleitung PDF herunterladen (Seite 208)

100

101

Run-Time Library UM017105-0511

180

Zilog Developer Studio II – ZNEO™

User Manual

Functions

Zilog Functions

The following functions are Zilog-specific; each is described on their respective pages, as

referenced below.

•

DI – see page 180

•

EI – see page 181

•

getch – see page 181

•

init_uart – see page 182

•

kbhit – see page 182

•

putch – see page 183

•

RI – see page 183

•

select_port – see page 184

•

SET_VECTOR – see page 184

•

TDI – see page 185

DI is an intrinsic function that disables all interrupts and is inline-expanded by default. If

the

–reduceopt compiler option is selected, then this function is not inline-expanded and

is instead implemented as a regular function.

Synopsis

#include <zneo.h>

intrinsic void DI(void);

char getch( void ) ; Returns the data byte available in the

selected

UART.

int init_uart(int port,unsigned long freq,

unsigned long baud);

Initializes the selected UART for specified

settings

and returns the error status.

int kbhit(void); Checks for receive data available on

selected UART.

int putch( char ) ; Sends a character to the selected UART

and returns the error status.

int select_port(int port); Selects the UART. Default is _UART0.

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