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rusefi / hw_microRusEfi

microRusEfi board for rusEfi ECU
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Add pull up/down resistors for ETB control pins #64

Closed mck1117 closed 5 years ago

mck1117 commented 5 years ago

Currently, between the internal pull up/down in the TLE9201 and STM32, the H bridge goes to full power reverse when the STM32 is in reset.

1) At a minimum we need a pullup resistor on the DIS pin 2) ideally also a pull down on the PWM pin.

These will ensure that even when the STM32 hasn't set up those pins yet, the throttle won't move.

mck1117 commented 5 years ago

Adding a bodge resistor from DIS to +3.3v on my board seems to have fixed the issue, so that may be all we need.

rusefi commented 5 years ago

DIS pull-up is R1 PWM pull-down is R16