Renesas Embedded Application Programming Interface, Reference Manual

Page: 33 / 204

Rev.1.01 2007.02.16
RJJ10J1643-0101
31
__BasicReceivingStatusRead
Synopsis
<Read receive status>
unsigned int __BasicReceivingStatusRead(unsigned long data)
data Setup data
Description
Returns the receive status of serial communication.
[data]
For data, the following values can be set.
(M16C)
RAPI_COM1 UART0 RAPI_COM2 UART1
RAPI_COM3 UART2 RAPI_COM4 SI/O3
RAPI_COM5 SI/O4
(R8C)
RAPI_COM1 UART0 RAPI_COM2 UART1
(H8/300H)
RAPI_COM1 SCI3 channel 1 RAPI_COM2 SCI3 channel 2
RAPI_COM3 SCI3 channel 3
Return value
The receive status of serial communication is returned. The returned value is one of
the following.
(M16C) (UART0, UART1, UART2)
RAPI_RX_INCOMPLETE Reception not complete yet.
Other than above Reception complete. The value read from the UARTi receive
buffer register (i = 0 to 2).
(M16C) (SI/O3, SI/O4)
RAPI_RX_INCOMPLETE Reception not complete yet.
Other than above Reception complete. Low-order 8 bits: The value read from the
SI/Oi transmit/receive register (i = 3, 4).
(R8C)
RAPI_RX_INCOMPLETE Reception not complete yet.
Other than above Reception complete. The value read from the UARTi receive
buffer register (i = 0, 1).
(H8/300H)
RAPI_RX_INCOMPLETE Reception not complete yet.
Other than above Reception complete.
High-order 8 bits: The value read from the serial status register.
Low-order 8 bits: The value read from the receive data register.
(Not read if an error occurred.)
Functionality
Serial I/O
Reference
__BasicStartSerialReceiving , __BasicStopSerialReceiving