1 files changed, 64 insertions, 0 deletions
diff --git a/arch/adc-calibration.h b/arch/adc-calibration.h
new file mode 100644
index 0000000..f0b05ab
--- /dev/null
+++ b/arch/adc-calibration.h
@@ -0,0 +1,64 @@
+// tk-calibration.h: Attiny calibration header.
+// Copyright (C) 2015-2023 Selene ToyKeeper
+// SPDX-License-Identifier: GPL-3.0-or-later
+#pragma once
+
+// This allows using a single set of hardcoded values across multiple projects.
+
+/********************** Voltage ADC calibration **************************/
+// These values were measured using RMM's FET+7135.
+// See battcheck/readings.txt for reference values.
+// the ADC values we expect for specific voltages
+#define ADC_44     194
+#define ADC_43     189
+#define ADC_42     184
+#define ADC_41     178
+#define ADC_40     173
+#define ADC_39     168
+#define ADC_38     163
+#define ADC_37     158
+#define ADC_36     152
+#define ADC_35     147
+#define ADC_34     142
+#define ADC_33     137
+#define ADC_32     131
+#define ADC_31     126
+#define ADC_30     121
+#define ADC_29     116
+#define ADC_28     111
+#define ADC_27     105
+#define ADC_26     100
+#define ADC_25     95
+#define ADC_24     90
+#define ADC_23     84
+#define ADC_22     79
+#define ADC_21     74
+#define ADC_20     69
+
+#define ADC_100p   ADC_42  // the ADC value for 100% full (resting)
+#define ADC_75p    ADC_40  // the ADC value for 75% full (resting)
+#define ADC_50p    ADC_38  // the ADC value for 50% full (resting)
+#define ADC_25p    ADC_35  // the ADC value for 25% full (resting)
+#define ADC_0p     ADC_30  // the ADC value for 0% full (resting)
+#define ADC_LOW    ADC_30  // When do we start ramping down
+#define ADC_CRIT   ADC_27  // When do we shut the light off
+
+
+/********************** Offtime capacitor calibration ********************/
+// Values are between 1 and 255, and can be measured with offtime-cap.c
+// See battcheck/otc-readings.txt for reference values.
+// These #defines are the edge boundaries, not the center of the target.
+#ifdef OFFTIM3
+// The OTC value 0.5s after being disconnected from power
+// (anything higher than this is a "short press")
+#define CAP_SHORT           190
+// The OTC value 1.5s after being disconnected from power
+// Between CAP_MED and CAP_SHORT is a "medium press"
+#define CAP_MED             94
+// Below CAP_MED is a long press
+#else
+// The OTC value 1.0s after being disconnected from power
+// Anything higher than this is a short press, lower is a long press
+#define CAP_SHORT           115
+#endif
+