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Functionally revert PR #1837 (#1861)

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Mark Thompson 2024-02-07 14:07:21 -06:00 committed by GitHub
parent e854261124
commit 8ad9ada015
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1 changed files with 7 additions and 2 deletions
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9
firmware/application/hw/debounce.cpp
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@ -158,8 +158,13 @@ uint8_t EncoderDebounce::state() {
bool EncoderDebounce::feed(const uint8_t phase_bits) {
history_ = (history_ << 2) | phase_bits;
// Has input been constant for 4 ticks? (phase_bits * 01010101b should be 0x00, 0x55, 0xAA, or 0xFF)
if (history_ == (phase_bits * 0x55)) {
// If both inputs have been stable for the last 4 ticks, history_ should equal 0x00, 0x55, 0xAA, or 0xFF.
uint8_t expected_stable_history = phase_bits * 0b01010101;
// But, checking for equal seems to cause issues with at least 1 user's encoder, so we're treating the input
// as "stable" if at least ONE input bit is consistent for 4 ticks...
uint8_t diff = (history_ ^ expected_stable_history);
if ((diff == 0) || ((diff & 0b01010101) == 0) || ((diff & 0b10101010) == 0)) {
// Has the debounced input value changed?
if (state_ != phase_bits) {
state_ = phase_bits;