Remarks 1.

This API function repeats SCI transmission in byte units the number of times specified by the argument tx_num from the buffer at the location specified by the argument tx_buf.

Remarks 2.

This API function repeats SCI reception processing in byte units the number of times specified by the argument rx_num and then stores the received data in the buffer at the location specified by the argument rx_buf.

Remarks 3.

When performing a SCI transmission/reception, R_SCIn_Start must be called before this API function is called.

#include    "r_cg_macrodriver.h"

MD_STATUS   R_SCIn_Serial_Send_Receive ( uint8_t * const tx_buf, uint16_t tx_num, uint8_t * const rx_buf, uint16_t rx_num );

Remark

n is the channel number.

I/O

Argument

Description

I

uint8_t * const tx_buf;

Pointer to a buffer storing the transmission data

I

uint16_t        tx_num;

Total amount of data to send

O

uint8_t * const rx_buf;

Pointer to a buffer to store the reception data

I

uint16_t        rx_num;

Total amount of data to receive

Macro

Description

MD_OK

Normal completion

MD_ARGERROR

Invalid argument tx_num specification