Other Parts Discussed in Thread: TIDA-01580
您好
我需要采样率为500HZ的，只使用PPG,未使用ECG，参考电路是TIDA-01580，只是去掉了ECG电路部分，其他未变，寄存器设置这样：
uint32_t const AFE_ppg_ecg_reg_arr[][2]=
{
{0x00, 0x000020}, /*CONTROL0*/
{0x01, 0x00000B}, /*LED2STC*/
{0x02, 0x00000D}, /*LED2ENDC*/
{0x03, 0x000014}, /*LED1LEDSTC*/
{0x04, 0x000017}, /*LED1LEDENDC*/
{0x05, 0x000010}, /*ALED2STC*/
{0x06, 0x000012}, /*ALED2ENDC*/
{0x07, 0x000015}, /*LED1STC*/
{0x08, 0x000017}, /*LED1ENDC*/
{0x09, 0x00000A}, /*LED2LEDSTC*/
{0x0A, 0x00000D}, /*LED2LEDENDC*/
{0x0B, 0x00001A}, /*ALED1STC*/
{0x0C, 0x00001C}, /*ALED1ENDC*/
{0x0D, 0x00000F}, /*LED2CONVST*/
{0x0E, 0x000012}, /*LED2CONVEND*/
{0x0F, 0x000014}, /*ALED2CONVST*/
{0x10, 0x000017}, /*ALED2CONVEND*/
{0x11, 0x000019}, /*LED1CONVST*/
{0x12, 0x00001C}, /*LED1CONVEND*/
{0x13, 0x00001E}, /*ALED1CONVST*/
{0x14, 0x000021}, /*ALED1CONVEND*/
{0x1D, 0x00003F}, /*PRPCOUNT*/
{0x1E, 0x000101}, /*CONTROL1*/
{0x1F, 0x000000}, /*TIAGAIN_2_3*/
{0x20, 0x000006},//{0x20, 0x000003}, /*TIAGAIN*/
{0x21, 0x000006},//{0x21, 0x007006},//{0x21, 0x000003}, /*TIA_AMB_GAIN*/
{0x22, 0xFFF000},//{0x22, 0xF00000}, /*LEDCNTRL1*/
{0x23, 0x104218}, /*CONTROL2*/
{0x24, 0x002A00}, /*LEDCNTRL2*/
{0x28, 0x000000}, /*TOGGLE*/
{0x29, 0x000000}, /*CLKDIV1*/
{0x2A, 0x000000}, /*LED2VAL*/
{0x2B, 0x000000}, /*ALED2VAL*/
{0x2C, 0x000000}, /*LED1VAL*/
{0x2D, 0x000000}, /*ALED1VAL*/
{0x2E, 0x000000}, /*LED2-ALED2VAL*/
{0x2F, 0x000000}, /*LED1-ALED1VAL*/
{0x31, 0x000020}, /*CONTROL3*/
{0x34, 0x000000}, /*PROG_INT2_STC*/
{0x35, 0x000000}, /*PROG_INT2_ENDC*/
{0x36, 0x00000F}, /*LED3LEDSTC*/
{0x37, 0x000012}, /*LED3LEDENDC*/
{0x39, 0x000000}, /*CLKDIV2*/
{0x3A, 0x100000},//{0x3A, 0x17BDEF},//, /*OFFDAC*/
{0x3B, 0x000000}, /*THRDETLOW*/
{0x3C, 0x000000}, /*THRDETHIGH*/
{0x3D, 0x000000}, /*THRDET*/
{0x3E, 0x000055},//{0x3E, 0x000088},//{0x3E, 0x000000}, /*I_OFFDAC*/偏置电流设置为0.125uA.
{0x3F, 0x000000}, /*AVG_LED2_ALED2VAL*/
{0x40, 0x000000}, /*AVG_LED1_ALED1VAL*/
{0x42, 0x000000}, /*FIFO*/
{0x43, 0x000019}, /*LED4LEDSTC*/
{0x44, 0x00001C}, /*LED4LEDENDC*/
{0x45, 0x000000}, /*TG_PD1STC*/
{0x46, 0x0000FF},//{0x46, 0x000042}, /*TG_PD1ENDC*/
{0x47, 0x000000},//{0x47, 0x000046}, /*TG_PD2STC*/
{0x48, 0x000000}, //{0x48, 0x0000FF},/*TG_PD2ENDC*/
{0x49, 0x000000}, /*TG_PD3STC*/
{0x4A, 0x000000}, /*TG_PD3ENDC*/
{0x4B, 0x000000}, /*CONTROL4*/
{0x4E, 0x000000},//{0x4E, 0xA4F00C}, /*DUAL_PD*/
{0x50, 0x000018},//{0x50, 0x180018}, /*CONTROL5*/
{0x51, 0x000000}, /*FIFO_OFFSET*/
{0x52, 0x000027}, /*DATA_RDY_STC*/
{0x53, 0x000027}, /*DATA_RDY_ENDC*/
{0x54, 0x000000}, /*MASK_PPG*/
{0x57, 0x000000}, /*PROG_INT1_STC*/
{0x58, 0x000000}, /*PROG_INT1_ENDC*/
{0x61, 0x000000},//{0x61, 0x080000}, /*ECG_CHOP*/
{0x62, 0x000000},//{0x62, 0xE00000}, /*ECG_RLD*/
{0x63, 0x000000}, /*RCOMP*/
{0x64, 0x000000}, /*DYN_TIA_STC*/
{0x65, 0x000023}, /*DYN_TIA_ENDC*/
{0x66, 0x000000}, /*DYN_ADC_STC*/
{0x67, 0x000023}, /*DYN_ADC_ENDC*/
{0x68, 0x000000}, /*DYN_CLOCK_STC*/
{0x69, 0x000023}, /*DYN_CLOCK_ENDC*/
{0x6A, 0x00002E}, /*DEEP_SLEEP_STC*/
{0x6B, 0x000038}, /*DEEP_SLEEP_ENDC*/
{0x6C, 0x000800}, /*PD_SHORT*/
{0x6D, 0x000000}, /*REG_POINTER*/
{0x72, 0x000000}, /*LED_DRIVER_CONTROL*/
{0x73, 0x000000}, /*THR_DETECT_LOGIC*/
{0xFF, 0x00} //End of Array
};为什么不接光电二极管的时候，读取0X2A,0X2B,0X2C,0X2D的数据，ADC已经趋近于满量程了？
如果使用官网TIDA-01580官网提供的寄存器设置：
uint32_t const AFE_ppg_ecg_reg_arr[][2]=
{
{0x00, 0x000020}, /*CONTROL0*/
{0x01, 0x00002B}, /*LED2STC*/
{0x02, 0x000033}, /*LED2ENDC*/
{0x03, 0x000001}, /*LED1LEDSTC*/
{0x04, 0x000000}, /*LED1LEDENDC*/
{0x05, 0x000039}, /*ALED2STC*/
{0x06, 0x000041}, /*ALED2ENDC*/
{0x07, 0x000047}, /*LED1STC*/
{0x08, 0x00004F}, /*LED1ENDC*/
{0x09, 0x000027}, /*LED2LEDSTC*/
{0x0A, 0x000033}, /*LED2LEDENDC*/
{0x0B, 0x000055}, /*ALED1STC*/
{0x0C, 0x00005D}, /*ALED1ENDC*/
{0x0D, 0x000035}, /*LED2CONVST*/
{0x0E, 0x000053}, /*LED2CONVEND*/
{0x0F, 0x000055}, /*ALED2CONVST*/
{0x10, 0x000073}, /*ALED2CONVEND*/
{0x11, 0x000075}, /*LED1CONVST*/
{0x12, 0x000093}, /*LED1CONVEND*/
{0x13, 0x000095}, /*ALED1CONVST*/
{0x14, 0x0000B3}, /*ALED1CONVEND*/
{0x1D, 0x0000FF}, /*PRPCOUNT*/
{0x1E, 0x000103}, /*CONTROL1*/
{0x1F, 0x000000}, /*TIAGAIN_2_3*/
{0x20, 0x000003}, /*TIAGAIN*/
{0x21, 0x000003}, /*TIA_AMB_GAIN*/
{0x22, 0xF00000}, /*LEDCNTRL1*/
{0x23, 0x104218}, /*CONTROL2*/
{0x24, 0x002A00}, /*LEDCNTRL2*/
{0x28, 0x000000}, /*TOGGLE*/
{0x29, 0x000000}, /*CLKDIV1*/
{0x2A, 0x000000}, /*LED2VAL*/
{0x2B, 0x000000}, /*ALED2VAL*/
{0x2C, 0x000000}, /*LED1VAL*/
{0x2D, 0x000000}, /*ALED1VAL*/
{0x2E, 0x000000}, /*LED2-ALED2VAL*/
{0x2F, 0x000000}, /*LED1-ALED1VAL*/
{0x31, 0x000020}, /*CONTROL3*/
{0x34, 0x000000}, /*PROG_INT2_STC*/
{0x35, 0x000000}, /*PROG_INT2_ENDC*/
{0x36, 0x000035}, /*LED3LEDSTC*/
{0x37, 0x000041}, /*LED3LEDENDC*/
{0x39, 0x000000}, /*CLKDIV2*/
{0x3A, 0x100000}, /*OFFDAC*/
{0x3B, 0x000000}, /*THRDETLOW*/
{0x3C, 0x000000}, /*THRDETHIGH*/
{0x3D, 0x000000}, /*THRDET*/
{0x3E, 0x000000}, /*I_OFFDAC*/
{0x3F, 0x000000}, /*AVG_LED2_ALED2VAL*/
{0x40, 0x000000}, /*AVG_LED1_ALED1VAL*/
{0x42, 0x000000}, /*FIFO*/
{0x43, 0x000043}, /*LED4LEDSTC*/
{0x44, 0x00004F}, /*LED4LEDENDC*/
{0x45, 0x000000}, /*TG_PD1STC*/
{0x46, 0x000042}, /*TG_PD1ENDC*/
{0x47, 0x000046}, /*TG_PD2STC*/
{0x48, 0x0000FF}, /*TG_PD2ENDC*/
{0x49, 0x000000}, /*TG_PD3STC*/
{0x4A, 0x000000}, /*TG_PD3ENDC*/
{0x4B, 0x000000}, /*CONTROL4*/
{0x4E, 0xA4F00C}, /*DUAL_PD*/
{0x50, 0x180018}, /*CONTROL5*/
{0x51, 0x000000}, /*FIFO_OFFSET*/
{0x52, 0x0000B9}, /*DATA_RDY_STC*/
{0x53, 0x0000B9}, /*DATA_RDY_ENDC*/
{0x54, 0x000000}, /*MASK_PPG*/
{0x57, 0x000000}, /*PROG_INT1_STC*/
{0x58, 0x000000}, /*PROG_INT1_ENDC*/
{0x61, 0x080000}, /*ECG_CHOP*/
{0x62, 0xE00000}, /*ECG_RLD*/
{0x63, 0x000000}, /*RCOMP*/
{0x64, 0x000000}, /*DYN_TIA_STC*/
{0x65, 0x0000B6}, /*DYN_TIA_ENDC*/
{0x66, 0x000000}, /*DYN_ADC_STC*/
{0x67, 0x0000B6}, /*DYN_ADC_ENDC*/
{0x68, 0x000000}, /*DYN_CLOCK_STC*/
{0x69, 0x0000B6}, /*DYN_CLOCK_ENDC*/
{0x6A, 0x0000C0}, /*DEEP_SLEEP_STC*/
{0x6B, 0x0000E5}, /*DEEP_SLEEP_ENDC*/
{0x6C, 0x000800}, /*PD_SHORT*/
{0x6D, 0x000000}, /*REG_POINTER*/
{0x72, 0x000000}, /*LED_DRIVER_CONTROL*/
{0x73, 0x000000}, /*THR_DETECT_LOGIC*/
{0xFF, 0x00} //End of Array
};不接光电二极管的时候，读取0X2A,0X2B,0X2C,0X2D的数据，ADC值就很小，请问为什么500HZ和官网提供的数据差距这么大，可以提供几个思路，看看哪里设置有问题吗？