R_SCIn_SPI_Master_Send

Starts SCI master transmission (simple SPI mode).

Remarks 1.

This API function repeats the byte-level SCI master transmission from the buffer specified in argument tx_buf the number of times specified in argument tx_num.

Remarks 2.

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

[Syntax]

#include    "r_cg_macrodriver.h"

MD_STATUS   R_SCIn_SPI_Master_Send ( uint8_t * const tx_buf, uint16_t tx_num );

Remark

n is the channel number.

[Argument(s)]

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

[Return value]

Macro	Description
MD_OK	Normal completion
MD_ARGERROR	Invalid argument tx_num specification