From e3ff81ea9913f6bafe67459e9c2725b5b9f3671b Mon Sep 17 00:00:00 2001
From: Nanosonde <2073569+nanosonde@users.noreply.github.com>
Date: Wed, 15 Jul 2020 16:30:16 +0200
Subject: [PATCH] Remove forgotten code.

---
 src/knx/rf_physical_layer.cpp | 21 ---------------------
 src/knx/rf_physical_layer.h   |  1 -
 2 files changed, 22 deletions(-)

diff --git a/src/knx/rf_physical_layer.cpp b/src/knx/rf_physical_layer.cpp
index f01e301..2881685 100644
--- a/src/knx/rf_physical_layer.cpp
+++ b/src/knx/rf_physical_layer.cpp
@@ -174,27 +174,6 @@ bool RfPhysicalLayer::manchDecode(uint8_t *encodedData, uint8_t *decodedData)
   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 marcState;
diff --git a/src/knx/rf_physical_layer.h b/src/knx/rf_physical_layer.h
index 01a3c44..ceb3196 100644
--- a/src/knx/rf_physical_layer.h
+++ b/src/knx/rf_physical_layer.h
@@ -206,7 +206,6 @@ class RfPhysicalLayer
     void manchEncode(uint8_t *uncodedData, uint8_t *encodedData);
     bool manchDecode(uint8_t *encodedData, uint8_t *decodedData);
 
-    int crc16(uint8_t* buffer, int offset, int length);
     void powerDownCC1101();
     void setOutputPowerLevel(int8_t dBm);