Renesas Embedded Application Programming Interface, Reference Manual

Page: 53 / 204

Rev.1.01 2007.02.16
RJJ10J1643-0101
51
__PollingSerialReceiving
Synopsis
<Polling reception>
unsigned int __PollingSerialReceiving(unsigned long data)
data Setup data
Description
Performs reception of serial communication by polling. This API gets received data by
an amount specified by __StartSerialReceiving. When acquisition of received data is
complete, it calls a notification function (if a notification function is registered).
[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
Out of the receive data counts requested, the number of unreceived data is returned.
Functionality
Serial I/O
Reference
__ConfigSerialDriverNotify , __SetSerialInterrupt , __StartSerialReceiving
Remark
•
The specifiable serial ports differ with each CPU used.
•
If an undefined value is specified in the argument, operation of the API cannot be
guaranteed.
Program example
#include ”rapi_sif_r8c_13.h”
unsigned int buffer[10], count;
void func( void )
{
………………
/* Reception interrupt disable */
__SetSerialInterrupt( RAPI_COM1 | RAPI_INT_TX_DIS | RAPI_INT_RX_DIS );
/* Start reception */
__StartSerialReceiving( RAPI_COM1, 5, buffer );
do{
count = __PollingSerialReceiving( RAPI_COM1 );
}while(count)
………………
}