Part Number:TDC7200
Hi all
i use TDC7200 with stm32f103 in TDC7200 Mode 2 for Measure Tof with one stop pulse
but at my test i use two digital pulses to TDC start and stop pins after A few pulses i receive 1.049 Second !!!
but at Mode 2 TDC can Measuremax 8ms of tof time i confirm registers with this program can help me to debug my code?
my oscillator clock is 8Mhz
i most Measure250ns to 8ms of tof
void TDC7200_Init(void){
TDC7200_Write8bitREG(TDC_REG_ADD_CONFIG1,0xDA); //trig falling / stop falling / start falling / mode2 /req not active
TDC7200_Write8bitREG(TDC_REG_ADD_CONFIG2,0x00);
TDC7200_Set_Stopmask(400);
TDC7200_SETClock_OVF(0xFFFF);
};
float TDC7200_Readtime(void){
uint32_t TIME1,TIME2,CALIBRATION1,CALIBRATION2,CALIBRATION2_PERIODS,CLOCK_COUNT1;
float CLOCK_PERIOD=0.000000125,calCount,normLSB,TOF1;
TIME1=TDC7200_Read24bitREG(TDC_REG_ADD_TIM1);
TIME2=TDC7200_Read24bitREG(TDC_REG_ADD_TIM2);
CALIBRATION1=TDC7200_Read24bitREG(TDC_REG_ADD_Calibration1);
CALIBRATION2=TDC7200_Read24bitREG(TDC_REG_ADD_Calibration2);
CALIBRATION2_PERIODS=2;
CLOCK_COUNT1=TDC7200_Read24bitREG(TDC_REG_ADD_CLOCK_Count1);
calCount=(CALIBRATION2-CALIBRATION1)/CALIBRATION2_PERIODS-1;
normLSB=CLOCK_PERIOD/calCount;
TOF1=TIME1*normLSB+CLOCK_COUNT1*CLOCK_PERIOD-TIME2*normLSB;
return TOF1;
}
