34 lines
777 B
C++
34 lines
777 B
C++
#include "PacketCRC.h"
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PacketCRC::PacketCRC() : crc(CRC16(0x755B, 0xF48B, 0x0000, false, false)) {
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// Constructor implementation (if needed)
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}
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PacketCRC::~PacketCRC() {
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// Destructor implementation (if needed)
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}
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bool PacketCRC::check(const uint8_t* packet) {
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uint8_t length = packet[1];
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if (length <= 0 or length > 28) {
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return false;
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}
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uint16_t result = calculate(packet);
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uint8_t checksum1 = (uint8_t)((result & 0xFF00) >> 8);
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uint8_t checksum2 = (uint8_t)(result & 0x00FF);
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if (packet[length + 2] == checksum1 && packet[length + 3] == checksum2) {
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return true;
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}
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return false;
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}
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uint16_t PacketCRC::calculate(const uint8_t* packet) {
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crc.restart();
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uint8_t length = packet[1];
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crc.add(packet, length + 2);
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return crc.calc();
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} |