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Making receiveNEC more reliable

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This commit is contained in:
Rodrigo Alfonso
2025-02-11 00:41:42 -03:00
parent 4b51164964
commit d05b3513e8
1 changed files with 16 additions and 7 deletions
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23
lib/LinkIR.hpp
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@@ -167,28 +167,37 @@ class LinkIR {
if (!isEnabled)
return false;
u16 pulses[NEC_TOTAL_PULSES];
if (!receive(pulses, NEC_TOTAL_PULSES, startTimeout))
u32 bufferSize = NEC_TOTAL_PULSES * 3;
u16 pulses[bufferSize];
if (!receive(pulses, bufferSize, startTimeout))
return false;
if (!isWithinNECTolerance(pulses[0], NEC_LEADER_MARK))
u32 cursor = 0;
while (cursor < bufferSize &&
!isWithinNECTolerance(pulses[cursor], NEC_LEADER_MARK))
cursor++;
if (cursor + NEC_TOTAL_PULSES >= bufferSize)
return false;
if (!isWithinNECTolerance(pulses[1], NEC_LEADER_SPACE))
if (!isWithinNECTolerance(pulses[cursor + 0], NEC_LEADER_MARK))
return false;
if (!isWithinNECTolerance(pulses[cursor + 1], NEC_LEADER_SPACE))
return false;
u32 data = 0;
for (u32 bit = 0; bit < 32; bit++) {
u32 markIndex = 2 + bit * 2;
u32 spaceIndex = markIndex + 1;
if (!isWithinNECTolerance(pulses[markIndex], NEC_PULSE))
if (!isWithinNECTolerance(pulses[cursor + markIndex], NEC_PULSE))
return false;
u16 space = pulses[spaceIndex];
u16 space = pulses[cursor + spaceIndex];
if (isWithinNECTolerance(space, NEC_SPACE_1))
data |= 1 << bit;
else if (!isWithinNECTolerance(space, NEC_SPACE_0))
return false;
}
if (!isWithinNECTolerance(pulses[66], NEC_PULSE))
if (!isWithinNECTolerance(pulses[cursor + 66], NEC_PULSE))
return false;
u8 addr = data & 0xFF;