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https://github.com/DCC-EX/CommandStation-EX.git
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speedup
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3e5d3b1caa
commit
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@ -70,23 +70,22 @@ void _loopInput(unsigned long currentMicros) {
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//set latch to HIGH to freeze & store parallel data
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ArduinoPins::fastWriteDigital(_latchPin, HIGH);
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delayMicroseconds(50);
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delayMicroseconds(1);
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//set latch to LOW to enable the data to be transmitted serially
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ArduinoPins::fastWriteDigital(_latchPin, LOW);
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delayMicroseconds(50);
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// stream in the bitmap using mapping order provided at constructor
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for (int xmitByte=0;xmitByte<_nShiftBytes; xmitByte++) {
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byte newByte=0;
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for (int xmitBit=0;xmitBit<8; xmitBit++) {
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ArduinoPins::fastWriteDigital(_clockPin, LOW);
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delayMicroseconds(20);
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delayMicroseconds(1);
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bool data = ArduinoPins::fastReadDigital(_dataPin);
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byte map=_pinMap[xmitBit];
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if (data) newByte |= map;
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else newByte &= ~map;
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ArduinoPins::fastWriteDigital(_clockPin, HIGH);
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delayMicroseconds(20);
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delayMicroseconds(1);
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}
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_pinValues[xmitByte]=newByte;
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// DIAG(F("DIN %x=%x"),xmitByte, newByte);
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