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Rev.1.01 2007.02.16
RJJ10J1643-0101
27
RAPI_COM3 SCI3 channel 3
For serial communication mode, the following values can be set.
(H8/300H) (SCI3 channel 1, SCI3 channel 2, SCI3 channel 3)
RAPI_SM_SYNC
Clock synchronous serial communication mode
RAPI_SM_ASYNC
Clock asynchronous serial communication mode
For the data length format of clock asynchronous serial communication, the following
values can be set.
If the API is used in clock synchronous serial communication mode, do not set these
values.
(H8/300H) (SCI3 channel 1, SCI3 channel 2, SCI3 channel 3)
RAPI_BIT_7 Transfer data length 7 bits RAPI_BIT_8 Transfer data length 8 bits
For the clock source of serial communication, the following values can be set.
(H8/300H) (SCI3 channel 1, SCI3 channel 2)
RAPI_CKDIR_INT Internal clock is used as the clock source of serial communication.
RAPI_CKDIR_EXT External clock is used as the clock source of serial communication.
For the stop bit length of clock asynchronous serial communication, the following
values can be set.
If the API is used in clock synchronous serial communication mode, do not set these
values.
(H8/300H) (SCI3 channel 1, SCI3 channel 2, SCI3 channel 3)
RAPI_STPB_1 1 stop bit RAPI_STPB_2 2 stop bits
For the parity bit of clock asynchronous serial communication, the following values can
be set.
If the API is used in clock synchronous serial communication mode, do not set these
values.
(H8/300H) (SCI3 channel 1, SCI3 channel 2, SCI3 channel 3)
RAPI_PARITY_NON No parity bit RAPI_PARITY_EVEN Even parity bit
RAPI_PARITY_ODD Odd parity bit
For the count source of the built-in baud rate generator, the following values can be set.
(H8/300H) (SCI3 channel 1, SCI3 channel 2 SCI3 channel 3)
RAPI_BCSS_F1 Φ clock RAPI_BCSS_F4 φ/4 clock
RAPI_BCSS_F16 φ/16 clock RAPI_BCSS_F32 φ/64 clock
The noise rejection function can be set to be turned on or turned off.
When used in clock synchronous serial communication mode, the noise rejection
function has no effect.
(H8/300H) (SCI3 channel 3)
RAPI_NOISE_CANCEL_ON Noise rejection function turned on
RAPI_NOISE_CANCEL_OFF Noise rejection function turned off
[data2]
Sets the divide-by-N value of a communication speed.
Return value
If serial communication was successfully set, RAPI_TRUE is returned; if settings failed,
RAPI_FALSE is returned.