Usage example (Master, Transmit)

Transmit 4Bytes data by Master.

[GUI setting example]

Serial				Used
	IICA0			Used
			Transfer mode	Single master
		Master0
			Clock mode setting	fCLK/2
			Local address setting	16
			Operation mode setting	Normal
			Transfer clock (fSCL)	100000(bps)(Actual value：99378.882)
			Communication endinterrupt priority (INTIICA0)	High
			Master transmission end (Callback function setting)	Used
			Master reception end (Callback function setting)	Unused
			Master error (Callback function setting)	Unused
			Generates stop condition in master transmission/reception end callback function (Callback function enhanced feature setting)	Used

[API setting example]

r_main.c

/* Start user code for pragma. Do not edit comment generated here */

#define SLAVE_ADDR (0xA0) /* slave address */

/* End user code. Do not edit comment generated here */

/* Start user code for global. Do not edit comment generated here */

volatile uint8_t g_iica0_tx_buf[4] = { 'A', 'B', 'C', 'D' };

/* End user code. Do not edit comment generated here */

void main(void)

{

R_MAIN_UserInit();

/* Start user code. Do not edit comment generated here */

/* Start to send data as master mode */

R_IICA0_Master_Send(SLAVE_ADDR, (uint8_t *)g_iica0_tx_buf, 4U, 128U);

while (1U)

{

;

}

/* End user code. Do not edit comment generated here */

}

r_cg_serial_user.c

static void r_iica0_callback_master_sendend(void)

{

SPT0 = 1U;

/* Start user code. Do not edit comment generated here */

/* Stop IICA0 module operation */

R_IICA0_Stop();

/* End user code. Do not edit comment generated here */

}