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Remove forgotten code.

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This commit is contained in:
Nanosonde 2020-07-15 16:30:16 +02:00
parent 9acd1537bd
commit e3ff81ea99
2 changed files with 0 additions and 22 deletions
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21
src/knx/rf_physical_layer.cpp
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@ -174,27 +174,6 @@ bool RfPhysicalLayer::manchDecode(uint8_t *encodedData, uint8_t *decodedData)
return true; return true;
} }
int RfPhysicalLayer::crc16(uint8_t* buffer, int offset, int length)
{
// CRC-16-DNP
// generator polynomial = 2^16 + 2^13 + 2^12 + 2^11 + 2^10 + 2^8 + 2^6 + 2^5 + 2^2 + 2^0
int pn = 0x13d65; // 1 0011 1101 0110 0101
// for much data, using a lookup table would be a way faster CRC calculation
int crc = 0;
for (int i = offset; i < offset + length; i++) {
int bite = buffer[i] & 0xff;
for (int b = 8; b --> 0;) {
bool bit = ((bite >> b) & 1) == 1;
bool one = (crc >> 15 & 1) == 1;
crc <<= 1;
if (one ^ bit)
crc ^= pn;
}
}
return (~crc) & 0xffff;
}
uint8_t RfPhysicalLayer::sIdle() uint8_t RfPhysicalLayer::sIdle()
{ {
uint8_t marcState; uint8_t marcState;

1
src/knx/rf_physical_layer.h
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@ -206,7 +206,6 @@ class RfPhysicalLayer
void manchEncode(uint8_t *uncodedData, uint8_t *encodedData); void manchEncode(uint8_t *uncodedData, uint8_t *encodedData);
bool manchDecode(uint8_t *encodedData, uint8_t *decodedData); bool manchDecode(uint8_t *encodedData, uint8_t *decodedData);
int crc16(uint8_t* buffer, int offset, int length);
void powerDownCC1101(); void powerDownCC1101();
void setOutputPowerLevel(int8_t dBm); void setOutputPowerLevel(int8_t dBm);