CCS/ADS1292: ads1292 / drdy problem

Part Number: ADS1292

Tool/software: Code Composer Studio

Hi,

I have a problem using ads1292.

When i read sample using continuous mode, drdy pin of ads state is abnormal.

(interrupt edge is low to high : raising edge)

Does anyone know about these problem?

This is my code.

int main(void)
{

	WDT_A_hold(WDT_A_BASE);

	init_CS();
	init_GPIO();

	//GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_PJ, GPIO_PIN2 | GPIO_PIN1 | GPIO_PIN0, GPIO_PRIMARY_MODULE_FUNCTION);
	register_mainOperation(main_idle);

	__enable_interrupt();

	initUart();

	initUserPort();
	setPowerEnPin(true);

	initADS1292();
	hal_ads_start();
	read_started = 1;

	while (1)
	{
		mainOperation();

		if (ads_read_flag)
		{
			hal_ads_read_sample(ads_buff);
			ads_read_flag = 0;
		}

	}
}

#pragma vector=PORT1_VECTOR
__interrupt void P1_ISR(void)
{
	switch (__even_in_range(P1IV, P1IV_P1IFG7))
	{
	case P1IV_P1IFG1:
		ads_read_flag = 1;
		break;

	case P1IV_P1IFG2:
		afe_read_flag = 1;
		break;

	default:
		break;
	}
}

• ADS1292 SCLK : 1MHz
• ADS1292 CLK : 2MHz from msp430

And, this is register setting of ads1292.

		0x01,  //CONFIG1 : 4kSPS for single shot mode
		0xF3,  //CONFIG2 : enable Lead-off comparator, enable reference buffer, reference 4V
		0x10,  //LOFF
		0x65,  //Channel1 //power down
		0x65,  //Channel2 //gain12
		0x25,  //RLD_SENS
		0x0F,  //LOFF_SENS
		0x40,  //LOFF_STAT
		0x02,  //RESP1
		0x03,  //RESP2
		0x03  //GPIO

Thanks.

Regards,

Youngjun