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- Table 1
- Interface Module Identifiers Accessible to
- a Task Module
-
- Identifier Function
- void setcom(void) Initializes the serial interface
- for baud rate, etc.
- int rxready(void) Returns nonzero if serial input
- byte is available; 0 if not.
- int rxbyte(void) Returns serial input byte.
- int txready(void) Returns nonzero if serial output
- byte can be accepted; 0 if not.
- void txbyte(int) Sends a serial output byte.
- int kbhit(void) Returns 1 if keyboard byte is
- available; 0 if not.
- int getch(void) Reads a keyboard byte.
- void putch(int) Writes a byte to console screen.
- void cleanup(void) Restores standard bootup
- interrupt configuration.
- int comerror Indicates receiver overrun error
- (bit 0), parity error (bit 1),
- framing error (bit 2), and
- ring-buffer overflow (bit 3).
-
- Note: All these identifiers should be declared as extern
- in a task module if modules are to be combined by
- linking.
-
-