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ADS1292： ads1292 can not get data ?

yancheng shen
Intellectual 265 points
Part Number: ADS1292


the follow is reg:

  • 0
    TI__Guru**** 182061 points

    Hi Yanchen!

    Can you provide any more detail? Are you connected to our ADS1292EVM-PDK or do you have your own hardware? Can you share a schematic or screen shots from your setup?

  • 0 in reply to Tom Hendrick
    Intellectual 265 points

    the problem  ：

    Sometimes data can be obtained and sometimes data can not be obtained.

  • 0 in reply to Tom Hendrick
    Intellectual 265 points 
           uint8_t retvalue=0;
	uint8_t index=0;
	nrf_gpio_cfg_output(SPI1_CONFIG_SS_PIN);
	nrf_gpio_cfg_output(ECG_START_PIN);
	nrf_gpio_cfg_output(ECG_PWDN_PIN);
	ret_code_t err_code;	
	nrf_drv_gpiote_in_config_t in_config = GPIOTE_CONFIG_IN_SENSE_HITOLO(true);
	in_config.pull = NRF_GPIO_PIN_PULLUP;
       err_code = nrf_drv_gpiote_in_init(ECG_ADC_RDY_INT, &in_config, read_pin_pin_handler);
       APP_ERROR_CHECK(err_code);
	nrf_drv_gpiote_in_event_enable(ECG_ADC_RDY_INT, true);
	ADS1292_START_LOW;
	ads1292r_reset(adapter);
	ADS1292_START_LOW;
	nrf_delay_ms(100);
	ads1292r_read_data_stop_continue(adapter);	
	nrf_delay_ms(10);
	while(1)
	{
		retvalue=ads1292r_get_id(adapter);
		SEGGER_RTT_printf(0,"retvalue=%02x\n",retvalue);
		if(retvalue==ADS1292_ID || retvalue==ADS1292R_ID)
		{
			break;
		}
		nrf_delay_ms(10);
		if(index>200)
		{
			return ADS_ERR;
		}
		index++;
	}
	if(retvalue==ADS1292R_ID)
	{
		adapter->device_id=ADS1292R_ID;
		SEGGER_RTT_printf(0,"select ads1292r\n");
		ads1292r_set_refrence_buff(adapter,ADS1292R_REFRENCE_BUFF_ENABLE);
		ads1292r_set_refrence_vol(adapter,ADS1292R_REFRENCE_VOL_2420);
		ads1292r_set_lead_off_comparator(adapter,ADS1292R_LEAD_OFF_COMPARATOR_DISANLE);
		nrf_delay_ms(10);
		
		ads1292r_set_internal_clk_connect(adapter,ADS1292R_INTERNAL_CLK_CONNECT_DISABLE);
		ads1292r_test_signal_en( adapter,ADS1292R_TEST_SIGNAL_OFF);
	//	ads1292r_test_signal_frq( adapter,ADS1292R_TEST_SIGNAL_SQZ1);
		
		//assign config1
		ads1292r_set_mode(adapter,ADS1292R_CONTINUE_MODE);
		ads1292r_set_sample_rate(adapter,ADS1292R_SAMPLE_RATE_500);    
		//0X03
		ads1292r_set_lead_off_comp_th(adapter,ADS1292R_LEAD_OFF_COMP_TH_70);
		ads1292r_set_lead_off_current(adapter,ADS1292R_LEAD_OFF_CUR_06_NA);
		ads1292r_set_lead_off_frq(adapter,ADS1292R_LEAD_OFF_DC);
		//0x04/05
		ads1292r_set_channel1_pwdn( adapter, ADS1292R_NOMAL_OPERATION);
		ads1292r_set_channel2_pwdn( adapter,ADS1292R_NOMAL_OPERATION);
		ads1292r_channel1_pag( adapter,ADS1292R_PAG_12);
		ads1292r_channel2_pag( adapter,ADS1292R_PAG_12);
		ads1292r_set_channel1_input_select( adapter,ADS1292R_NOMAL_INPUT);
		ads1292r_set_channel2_input_select( adapter,ADS1292R_NOMAL_INPUT);
		//0x06
		ads1292r_set_chop_frq(adapter,ADS1292R_CHOP_FRQ_16);
		ads1292r_set_rld_buff(adapter,ADS1292R_ENABLE);
		ads1292r_set_rld_lead_off_sense( adapter,ADS1292R_DISABLE);
		ads1292r_set_rld_connect_channel1_positive(adapter,ADS1292R_ENABLE);
		ads1292r_set_rld_connect_channel2_positive(adapter,ADS1292R_ENABLE);
		ads1292r_set_rld_connect_channel1_negative(adapter,ADS1292R_ENABLE);
		ads1292r_set_rld_connect_channel2_negative(adapter,ADS1292R_ENABLE);
		//0x07
		ads1292r_set_loff_dir_current_sel_channel2(adapter,ADS1292R_DISABLE);
		ads1292r_set_loff_dir_current_sel_channel1(adapter,ADS1292R_DISABLE);
		ads1292r_set_channel2_loff_detection_neg_input(adapter,ADS1292R_ENABLE);
		ads1292r_set_channel2_loff_detection_pos_input(adapter,ADS1292R_ENABLE);
		ads1292r_set_channel1_loff_detection_neg_input(adapter,ADS1292R_ENABLE);
		ads1292r_set_channel1_loff_detection_pos_input(adapter,ADS1292R_ENABLE);
		//0x08
		ads1292r_set_modultor_clk_div(adapter,ADS1292R_CLK_DIV_4);	
		//resp
		//0x09
		ads1292r_set_resp_demod(adapter,ADS1292R_RESP_DEMOD_ON);
		ads1292r_set_resp_mod(adapter,ADS1292R_RESP_MOD_ON);
		//ADS1292R_RESP_PHASE
		ads1292r_set_resp_phase(adapter,ADS1292R_RESP_PHASE_112_5);
		//ADS1292R_RESP_CLK_MODE
		ads1292r_set_resp_clk_mode(adapter,ADS1292R_RESP_CLK_INTERNAL);
		//0x0a
		ads1292r_set_resp_calib(adapter,ADS1292R_RESP_CALIB_OFF);
		ads1292r_set_resp_frq(adapter,ADS1292R_RESP_FREQ_32);	
	}
	else if(retvalue==ADS1292_ID)
	{
		adapter->device_id=ADS1292_ID;
		SEGGER_RTT_printf(0,"select ads1292\n");
		ads1292r_set_refrence_buff(adapter,ADS1292R_REFRENCE_BUFF_ENABLE);
		ads1292r_set_refrence_vol(adapter,ADS1292R_REFRENCE_VOL_2420);
		ads1292r_set_lead_off_comparator(adapter,ADS1292R_LEAD_OFF_COMPARATOR_DISANLE);
		nrf_delay_ms(10);
		ads1292r_set_internal_clk_connect(adapter,ADS1292R_INTERNAL_CLK_CONNECT_DISABLE);
		ads1292r_test_signal_en( adapter,ADS1292R_TEST_SIGNAL_OFF);
	//ads1292r_test_signal_frq( adapter,ADS1292R_TEST_SIGNAL_SQZ1);
		
		//assign config1
		ads1292r_set_mode(adapter,ADS1292R_CONTINUE_MODE);
		ads1292r_set_sample_rate(adapter,ADS1292R_SAMPLE_RATE_500);    
		//0X03
		ads1292r_set_lead_off_comp_th(adapter,ADS1292R_LEAD_OFF_COMP_TH_70);
		ads1292r_set_lead_off_current(adapter,ADS1292R_LEAD_OFF_CUR_06_NA);
		ads1292r_set_lead_off_frq(adapter,ADS1292R_LEAD_OFF_DC);
		//0x04/05
		ads1292r_set_channel1_pwdn( adapter, ADS1292R_POWER_DOWN);
		ads1292r_set_channel2_pwdn( adapter,ADS1292R_NOMAL_OPERATION);
		ads1292r_channel1_pag( adapter,ADS1292R_PAG_6);
		ads1292r_channel2_pag( adapter,ADS1292R_PAG_12);
		ads1292r_set_channel1_input_select( adapter,ADS1292R_INPUT_SHORT);
		ads1292r_set_channel2_input_select( adapter,ADS1292R_NOMAL_INPUT);
		//0x06
		ads1292r_set_chop_frq(adapter,ADS1292R_CHOP_FRQ_16);
		ads1292r_set_rld_buff(adapter,ADS1292R_ENABLE);
		ads1292r_set_rld_lead_off_sense( adapter,ADS1292R_DISABLE);
		ads1292r_set_rld_connect_channel1_positive(adapter,ADS1292R_ENABLE);
		ads1292r_set_rld_connect_channel2_positive(adapter,ADS1292R_ENABLE);
		ads1292r_set_rld_connect_channel1_negative(adapter,ADS1292R_ENABLE);
		ads1292r_set_rld_connect_channel2_negative(adapter,ADS1292R_ENABLE);
		//0x07
		ads1292r_set_loff_dir_current_sel_channel2(adapter,ADS1292R_DISABLE);
		ads1292r_set_loff_dir_current_sel_channel1(adapter,ADS1292R_DISABLE);
		ads1292r_set_channel2_loff_detection_neg_input(adapter,ADS1292R_ENABLE);
		ads1292r_set_channel2_loff_detection_pos_input(adapter,ADS1292R_ENABLE);
		ads1292r_set_channel1_loff_detection_neg_input(adapter,ADS1292R_ENABLE);
		ads1292r_set_channel1_loff_detection_pos_input(adapter,ADS1292R_ENABLE);
		//0x08
		ads1292r_set_modultor_clk_div(adapter,ADS1292R_CLK_DIV_4);	
		//resp
		//0x09
		ads1292r_set_resp_demod( adapter,ADS1292R_RESP_DEMOD_OFF);
		ads1292r_set_resp_mod( adapter,ADS1292R_RESP_MOD_OFF);
		//ADS1292R_RESP_PHASE
		ads1292r_set_resp_phase( adapter,ADS1292R_RESP_PHASE_0);
		//ADS1292R_RESP_CLK_MODE
		ads1292r_set_resp_clk_mode( adapter,ADS1292R_RESP_CLK_INTERNAL);
//		//0x0a
//		ads1292r_set_resp_calib(adapter,ADS1292R_RESP_CALIB_OFF);
		ads1292r_set_resp_frq( adapter,ADS1292R_RESP_FREQ_64);	
		ads1292r_wake_up(adapter);
		for(uint8_t i=0;i<0x0c;i++)
		{
			SEGGER_RTT_printf(0,"tem[%d]=%02x\n",i,ads1292r_read_reg(adapter,i));
		}
	}
	else
	{
		return ADS_ERR ;
	}
	ADS1292_START_HIGH; 
	if(adapter->mode==0) ads1292r_read_data_start_continue(adapter);
	nrf_delay_ms(1000);
	ads1292_adapter=adapter;

	return ADS_SUC;

  • 0 in reply to Tom Hendrick
    Intellectual 265 points
    the another problem：No interrupt can be triggered for ready pin
  • 0 in reply to yancheng shen
    TI__Guru**** 182061 points
    Hi Yancheng,

    Are both R1 and R2 installed on your PCB? Could you be resetting or in power down? Screen captures of your communication lines would be helpful as well.

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