diff options
Diffstat (limited to 'src/Platform.cpp')
| -rw-r--r-- | src/Platform.cpp | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/Platform.cpp b/src/Platform.cpp index e35a1be9..972f7877 100644 --- a/src/Platform.cpp +++ b/src/Platform.cpp @@ -2130,7 +2130,8 @@ void Platform::SetFanValue(size_t fan, float speed) // Enable or disable the fan that shares its PWM pin with the last heater. Called when we disable or enable the last heater. void Platform::EnableSharedFan(bool enable) { - fans[NUM_FANS - 1].Init((enable) ? COOLING_FAN_PINS[NUM_FANS - 1] : NoPin, FansHardwareInverted()); + const size_t sharedFanNumber = NUM_FANS - 1; + fans[sharedFanNumber].Init((enable) ? COOLING_FAN_PINS[sharedFanNumber] : NoPin, FansHardwareInverted(sharedFanNumber)); } #endif @@ -2148,13 +2149,14 @@ float Platform::GetFanRPM() : 0.0; // else assume fan is off or tacho not connected } -bool Platform::FansHardwareInverted() const +bool Platform::FansHardwareInverted(size_t fanNumber) const { #if defined(DUET_NG) || defined(__RADDS__) return false; #else - // The cooling fan output pin gets inverted on a Duet 0.6 or 0.7 - return board == BoardType::Duet_06 || board == BoardType::Duet_07; + // The cooling fan output pin gets inverted on a Duet 0.6 or 0.7. + // We allow a second fan controlled by a mosfet on the PC4 pin, which is not inverted. + return fanNumber == 0 && (board == BoardType::Duet_06 || board == BoardType::Duet_07); #endif } @@ -2162,7 +2164,7 @@ void Platform::InitFans() { for (size_t i = 0; i < NUM_FANS; ++i) { - fans[i].Init(COOLING_FAN_PINS[i], FansHardwareInverted()); + fans[i].Init(COOLING_FAN_PINS[i], FansHardwareInverted(i)); } if (NUM_FANS > 1) |