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adding 16 bit rate correction in eiger

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This commit is contained in:
Dhanya Maliakal
2016-09-23 14:28:20 +02:00
parent c678199802
commit d904f7b32e
6 changed files with 84 additions and 19 deletions
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31
slsDetectorSoftware/eigerDetectorServer/FebControl.c
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@ -51,6 +51,7 @@ double Feb_Control_exposure_period_in_sec;
int64_t Feb_Control_RateTable_Tau_in_nsec = -1;
int64_t Feb_Control_RateTable_Subexptime_in_nsec = -1;
int64_t Feb_Control_RateTable_Exptime_in_nsec = -1;
unsigned int Feb_Control_trimbit_size;
unsigned int* Feb_Control_last_downloaded_trimbits;
@ -1371,6 +1372,7 @@ int Feb_Control_SetExposureTime(double the_exposure_time_in_sec){
return 1;
}
double Feb_Control_GetExposureTime(){return Feb_Control_exposure_time_in_sec;}
int64_t Feb_Control_GetExposureTime_in_nsec(){return (int64_t)(Feb_Control_exposure_time_in_sec*(1E9));}
int Feb_Control_SetSubFrameExposureTime(int64_t the_subframe_exposure_time_in_10nsec){
Feb_Control_subframe_exposure_time_in_10nsec = the_subframe_exposure_time_in_10nsec;
@ -1790,25 +1792,39 @@ int Feb_Control_PulseChip(int npulses){
int64_t Feb_Control_Get_RateTable_Tau_in_nsec(){ return Feb_Control_RateTable_Tau_in_nsec;}
int64_t Feb_Control_Get_RateTable_Subexptime_in_nsec(){ return Feb_Control_RateTable_Subexptime_in_nsec;}
int64_t Feb_Control_Get_RateTable_Exptime_in_nsec(){ return Feb_Control_RateTable_Exptime_in_nsec;}
//returns -1 if slope is too high
int Feb_Control_SetRateCorrectionTau(int64_t tau_in_Nsec){
double exptime_in_sec = Feb_Control_GetExposureTime();
double sub_expure_time_in_sec = (double)(Feb_Control_GetSubFrameExposureTime())/(double)1e9;
int dr = Feb_Control_GetDynamicRange();
double period_in_sec = sub_expure_time_in_sec;
if(dr == 16)
period_in_sec = exptime_in_sec;
double tau_in_sec = (double)tau_in_Nsec/(double)1e9;
unsigned int np = 16384; //max slope 16 * 1024
double b0[1024];
double m[1024];
if(tau_in_sec<0||sub_expure_time_in_sec<0){
printf("Error tau %f and sub_expure_time %f must be greater than 0.\n", tau_in_sec, sub_expure_time_in_sec);
if(tau_in_sec<0||period_in_sec<0){
if(dr == 32)
printf("Error tau %f and sub_exposure_time %f must be greater than 0.\n", tau_in_sec, sub_expure_time_in_sec);
else
printf("Error tau %f and exposure_time %f must be greater than 0.\n", tau_in_sec, exptime_in_sec);
return 0;
}
printf("\tCalculating table for tau of %lld ns.\n", tau_in_Nsec);
int i;
for(i=0;i<np;i++)
Feb_Control_rate_meas[i] = i*exp(-i/sub_expure_time_in_sec*tau_in_sec);
Feb_Control_rate_meas[i] = i*exp(-i/period_in_sec*tau_in_sec);
/*
b : index/address of block ram/rate correction table
@ -1886,11 +1902,18 @@ int Feb_Control_SetRateCorrectionTau(int64_t tau_in_Nsec){
if(Feb_Control_SetRateCorrectionTable(Feb_Control_rate_correction_table)){
Feb_Control_RateTable_Tau_in_nsec = tau_in_Nsec;
Feb_Control_RateTable_Subexptime_in_nsec = Feb_Control_GetSubFrameExposureTime();
if(dr == 32){
Feb_Control_RateTable_Subexptime_in_nsec = Feb_Control_GetSubFrameExposureTime();
Feb_Control_RateTable_Exptime_in_nsec = -1;
}else{
Feb_Control_RateTable_Exptime_in_nsec = Feb_Control_GetExposureTime_in_nsec();
Feb_Control_RateTable_Subexptime_in_nsec = -1;
}
return 1;
}else{
Feb_Control_RateTable_Tau_in_nsec = -1;
Feb_Control_RateTable_Subexptime_in_nsec = -1;
Feb_Control_RateTable_Exptime_in_nsec = -1;
return 0;
}