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Rough ts80 tuning

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This commit is contained in:
Ben V. Brown
2019-12-23 13:33:17 +11:00
parent c408fc0a7e
commit d8f7d660b8
1 changed files with 5 additions and 3 deletions
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8
workspace/TS100/Core/Src/TipThermoModel.cpp
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@@ -26,13 +26,15 @@
* This was bought to my attention by <Kuba Sztandera>
*/
// TIP_GAIN = TIP_GAIN/1000 == uV per deg C constant of the tip
#ifdef MODEL_TS100
#define OP_AMP_Rf 750*1000 /*750 Kilo-ohms -> From schematic, R1*/
#define OP_AMP_Rin 2370 /*2.37 Kilo-ohms -> From schematic, R2*/
#define TIP_GAIN 405
#else
#define OP_AMP_Rf 180*1000 /*180 Kilo-ohms -> From schematic, R6*/
#define OP_AMP_Rin 2000 /*2.0 Kilo-ohms -> From schematic, R3*/
#define TIP_GAIN 115
#endif
@@ -314,7 +316,7 @@ int32_t LinearInterpolate(int32_t x1, int32_t y1, int32_t x2, int32_t y2,
uint32_t TipThermoModel::convertuVToDegC(uint32_t tipuVDelta) {
//based on new measurements, tip is quite linear at 24.9uV per deg C = 2.49 per 0.1C
//
tipuVDelta *= 405;
tipuVDelta *= TIP_GAIN;
tipuVDelta /= 10000;
return tipuVDelta;
@@ -339,7 +341,7 @@ uint32_t TipThermoModel::convertuVToDegC(uint32_t tipuVDelta) {
}
uint32_t TipThermoModel::convertuVToDegF(uint32_t tipuVDelta) {
tipuVDelta *= 405;
tipuVDelta *= TIP_GAIN;
tipuVDelta /= 1000;
return ((tipuVDelta * 9) / 50) + 32;
//(Y °C × 9/5) + 32 =Y°F