SFH7050+AFE4404心率heart rate3

1、官网给的图 2、驱动AFE4404:IIC协议，驱动LED,读取三路LED数据，官方有驱动例程，修改下就行，stm32硬件IIC没用用的虚拟IIC 3、配置char hr3_init( uint8_t address, dynamic_modes_t* dyn_modes ) { hr3_hal_init( address ); hr3_set_settings( sw_reset_en,diag_mode_dis,susp_count_dis,reg_read_dis ); hr3_set_led2_start_end( 0, 399 ); hr3_set_led2_sample_start_end( 80, 399 ); hr3_set_adc_reset0_start_end( 401, 407 ); hr3_set_led2_convert_start_end( 408, 1467 ); hr3_set_led3_start_stop( 400, 799 ); hr3_set_led3_sample_start_end( 480, 799 ); hr3_set_adc_reset1_start_end( 1469, 1475 ); hr3_set_led3_convert_start_end( 1476, 2535 ); hr3_set_led1_start_end( 800, 1199 ); hr3_set_led1_sample_start_end( 880, 1199 ); hr3_set_adc_reset2_start_end( 2537, 2543 ); hr3_set_led1_convert_start_end( 2544, 3603 ); hr3_set_amb1_sample_start_end( 1279, 1598 ); hr3_set_adc_reset3_start_end( 3605, 3611 ); hr3_set_amb1_convert_start_end( 3612, 4671 ); hr3_set_pdn_cycle_start_end( 5471, 39199 ); hr3_set_prpct_count( 39999 ); //Clock timing for CLKDIV_PRF = 1

//Clock Timing for CLKDIV_PRF = 5

/* hr3_set_led2_start_end( 0, 79 ); hr3_set_led2_sample_start_end( 16, 79 ); hr3_set_adc_reset0_start_end( 80, 81 ); hr3_set_led2_convert_start_end( 81, 293 ); hr3_set_led3_start_stop( 80, 159 ); hr3_set_led3_sample_start_end( 96, 159 ); hr3_set_adc_reset1_start_end( 293, 295 ); hr3_set_led3_convert_start_end( 295, 507 ); hr3_set_led1_start_end( 160, 239 ); hr3_set_led1_sample_start_end( 176, 239 ); hr3_set_adc_reset2_start_end( 507, 508 ); hr3_set_led1_convert_start_end( 508, 720 ); hr3_set_amb1_sample_start_end( 255, 319 ); hr3_set_adc_reset3_start_end( 721, 722 ); hr3_set_amb1_convert_start_end( 722, 934 ); hr3_set_pdn_cycle_start_end( 1094, 7839 ); hr3_set_prpct_count( 7999 ); */

hr3_set_timer_and_average_num( true, 3 ); hr3_set_seperate_tia_gain( true, 0, 4 ); hr3_set_tia_gain( false, 0, 3 ); hr3_set_led_currents( 15,3,3 ); hr3_set_dynamic_settings( dyn_modes ); hr3_set_clkout_div( false, 2 ); hr3_set_int_clk_div( 1 ); return 0;

} void AFE4404_Init(void) { //Local Declarations uint8_t address = 0x58;

//Set up dynamic modes for hr3 init dynamic_modes.transmit = trans_en; dynamic_modes.curr_range = led_norm; dynamic_modes.adc_power = adc_on; dynamic_modes.clk_mode = osc_mode; dynamic_modes.tia_power = tia_off; dynamic_modes.rest_of_adc = rest_of_adc_off; dynamic_modes.afe_rx_mode = afe_rx_normal; dynamic_modes.afe_mode = afe_normal; //Toggle Reset pin RST_L; delay_us(100); RST_H; //Heart Rate 3 Initialize hr3_init( address, &dynamic_modes );

}

void AFE4404_Task(void) { led_values_t sLed={0}; sLed.led1_val = hr3_get_led1_val(); sLed.led2_val = hr3_get_led2_val(); sLed.led3_val = hr3_get_led3_val();

gSfh7050_f.led1_val_f = (float)sLed.led1_val/1000.0f; gSfh7050_f.led2_val_f = (float)sLed.led2_val/1000.0f; gSfh7050_f.led3_val_f = (float)sLed.led3_val/1000.0f;

}