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Include some bias removal based on the target temp to linearise the response a bit more

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Ben V. Brown
2020-12-29 10:44:39 +11:00
parent 27bf2a1711
commit a3f037fd1d
3 changed files with 77 additions and 64 deletions
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7
workspace/TS100/configuration.h
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@@ -91,7 +91,6 @@
#define TEMPERATURE_INF 0 // default to 0
#define DESCRIPTION_SCROLL_SPEED 0 // 0: Slow 1: Fast - default to slow
#define TIP_GAIN 210 // 21 uV/C * 10, uV per deg C constant of the tip, Tip uV * 10 / coeff = tip temp
#define OP_AMP_Rf_TS100 750 * 1000 // 750 Kilo-ohms -> From schematic, R1
#define OP_AMP_Rin_TS100 2370 // 2.37 Kilo-ohms -> From schematic, R2
@@ -101,15 +100,15 @@
#define OP_AMP_Rf_TS80 180 * 1000 // 180 Kilo-ohms -> From schematic, R6
#define OP_AMP_Rin_TS80 2000 // 2.0 Kilo-ohms -> From schematic, R3
#define OP_AMP_GAIN_STAGE_TS80 (1 + (OP_AMP_Rf_TS80 / OP_AMP_Rin_TS80))
#define OP_AMP_GAIN_STAGE_TS80 (1 + (OP_AMP_Rf_TS80 / OP_AMP_Rin_TS80))*3
//The *3 here is a fudge factor that I dont like, but havent tracked down root cause _yet_
//Deriving the Voltage div:
// Vin_max = (3.3*(r1+r2))/(r2)
//vdiv = (32768*4)/(vin_max*10)
#ifdef MODEL_TS100
#define VOLTAGE_DIV 467 // 467 - Default divider from schematic
#define CALIBRATION_OFFSET 900 // 900 - Default adc offset in uV
#define CALIBRATION_OFFSET 1200 // 900 - Default adc offset in uV
#define PID_POWER_LIMIT 70 // Sets the max pwm power limit
#define POWER_LIMIT 0 // 0 watts default limit
#define MAX_POWER_LIMIT 65 //