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updated max1932, modified ltc2620

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maliakal_d
2019-01-09 17:41:10 +01:00
parent 81a49babda
commit b1570bde9c
14 changed files with 257 additions and 469 deletions
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60
slsDetectorServers/slsDetectorServer/common.h
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@ -1,44 +1,42 @@
#pragma once
/**
* Convert voltage to dac units
* @param voltage value in mv
* @param dacval pointer to value converted to dac units
* @param vmin minimum voltage in mV
* @param vmax maximum voltage in mV
* @param maximum number of steps
* @returns FAIL when voltage outside limits, OK if conversion successful
* Convert a value from a range to a different range (eg voltage to dac or vice versa)
* @param inputMin input minimum
* @param inputMax input maximum
* @param outputMin output minimum
* @param outputMax output maximum
* @param inputValue input value
* @param outputValue pointer to output value
* @returns FAIL if input value is out of bounds, else OK
*/
int Common_VoltageToDac(int voltage, int* dacval, int vmin, int vmax, int nsteps) {
int ConvertToDifferentRange(int inputMin, int inputMax, int outputMin, int outputMax,
int inputValue, int* outputValue) {
FILE_LOG(logDEBUG1, ("\tInput Value: %d\n", inputValue));
// validate
if ((voltage < vmin) || (voltage > vmax)) {
FILE_LOG(logERROR, ("Voltage value (to convert to dac value) is outside bounds (%d to %d mV): %d\n", vmin, vmax, voltage));
// validate within bounds
// eg. MAX1932 range is v(60 - 200) to dac(255 - 1), here inputMin > inputMax (when dac to voltage)
int smaller = inputMin;
int bigger = inputMax;
if (smaller > bigger) {
smaller = inputMax;
bigger = inputMin;
}
if ((inputValue < smaller) || (inputValue > bigger)) {
FILE_LOG(logERROR, ("Input Value is outside bounds (%d to %d): %d\n", inputValue, smaller, bigger));
*outputValue = -1;
return FAIL;
}
// convert
*dacval = (int)(((voltage - vmin) / (vmax - vmin)) * (nsteps - 1) + 0.5);
return OK;
}
/**
* Convert dac units to voltage
* @param dacval dac units
* @param voltage pointer to value converted to mV
* @param vmin minimum voltage in mV
* @param vmax maximum voltage in mV
* @param maximum number of steps
* @returns FAIL when voltage outside limits, OK if conversion successful
*/
int Common_DacToVoltage(int dacval, int* voltage, int vmin, int vmax, int nsteps) {
double value = double((inputValue - inputMin) * (outputMax - outputMin))
/ double(inputMax - inputMin) + outputMin;
// validate
if ((dacval < 0) || (dacval >= nsteps)) {
FILE_LOG(logERROR, ("Dac units (to convert to voltage) is outside bounds (0 to %d): %d\n", nsteps - 1, dacval));
return FAIL;
// double to integer conversion (if decimal places, round to integer)
if ((value - (int)value) > 0.0001) {
value += 0.5;
}
*outputValue = value;
// convert
*voltage = vmin + (vmax - vmin) * dacval / (nsteps - 1);
FILE_LOG(logDEBUG1, ("\tConverted Ouput Value: %d\n", *outputValue));
return OK;
}