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1 | #include "pch.h" | |||
2 | ||||
3 | #include "vr_pwm.h" | |||
4 | ||||
5 | static OutputPin pins[VR_THRESHOLD_COUNT]; | |||
6 | static SimplePwm pwms[VR_THRESHOLD_COUNT]; | |||
7 | ||||
8 | // Default to 3.3v if not defined, most boards wire the VR threshold input directly to an MCU pin. | |||
9 | #ifndef VR_SUPPLY_VOLTAGE | |||
10 | #define VR_SUPPLY_VOLTAGE 3.3f | |||
11 | #endif | |||
12 | ||||
13 | 2170 | static void updateVrThresholdPwm(float rpm, size_t index) { | ||
14 | 2170 | auto& cfg = engineConfiguration->vrThreshold[index]; | ||
15 | ||||
16 |
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2170 | if (!isBrainPinValid(cfg.pin)) { |
17 | 2170 | return; | ||
18 | } | |||
19 | ||||
20 | ✗ | float thresholdVoltage = interpolate2d(rpm, cfg.rpmBins, cfg.values); | ||
21 | ||||
22 | // 0v threshold voltage = 3.3v output from mcu = 100% duty | |||
23 | // 2.5v threshold voltage = 0v output from mcu = 0% duty | |||
24 | ✗ | float thresholdInputVoltage = interpolateClamped(0, 3.3f, 2.5f, 0, thresholdVoltage); | ||
25 | ||||
26 | ✗ | float duty = thresholdInputVoltage / VR_SUPPLY_VOLTAGE; | ||
27 | ||||
28 | ✗ | pwms[index].setSimplePwmDutyCycle(duty); | ||
29 | } | |||
30 | ||||
31 | 1085 | void updateVrThresholdPwm() { | ||
32 | 1085 | auto rpm = Sensor::getOrZero(SensorType::Rpm); | ||
33 | ||||
34 |
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3255 | for (size_t i = 0; i < efi::size(engineConfiguration->vrThreshold); i++) { |
35 | 2170 | updateVrThresholdPwm(rpm, i); | ||
36 | } | |||
37 | 1085 | } | ||
38 | ||||
39 | ✗ | void initVrThresholdPwm() { | ||
40 | ✗ | for (size_t i = 0; i < efi::size(engineConfiguration->vrThreshold); i++) { | ||
41 | ✗ | auto& cfg = engineConfiguration->vrThreshold[i]; | ||
42 | ||||
43 | ✗ | if (!isBrainPinValid(cfg.pin)) { | ||
44 | ✗ | continue; | ||
45 | } | |||
46 | ||||
47 | ✗ | startSimplePwmHard(&pwms[i], "VR Threshold", | ||
48 | &engine->scheduler, | |||
49 | cfg.pin, | |||
50 | ✗ | &pins[i], | ||
51 | 10000, // it's guaranteed to be hardware PWM, the faster the PWM, the less noise makes it through | |||
52 | 0 | |||
53 | ); | |||
54 | } | |||
55 | ✗ | } | ||
56 | ||||
57 | 586 | void setDefaultVrThresholds() { | ||
58 |
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1758 | for (int i = 0;i<VR_THRESHOLD_COUNT;i++) { |
59 | 1172 | setRpmTableBin(engineConfiguration->vrThreshold[i].rpmBins); | ||
60 | 1172 | setLinearCurve(engineConfiguration->vrThreshold[i].values, 0.6, 1.2, 0.1); | ||
61 | } | |||
62 | 586 | } | ||
63 |