decoder.cpp

#include <fstream>
#include <iostream>
#include "telemetry.hpp"

int main() {
    TelemetryFrame incomingFrame = {0,0,0,0,0,0,0};

    std::ifstream inFile("telemetry.dat", std::ios::binary);
    if (!inFile) {
        std::cerr << "Error reading telemetry data.";
    }
    inFile.read(reinterpret_cast<char*>(&incomingFrame), sizeof(incomingFrame));
    inFile.close();

    if (incomingFrame.sync_word != 0x1ACF) {
        std::cerr << "Error! Sync word corrupt or missing!";
    } else {
        uint16_t tempChecksum = 0;
        auto* bytePointer = reinterpret_cast<uint8_t *>(&incomingFrame); // create a pointer to the testFrame's bytes
        for (int i = 0; i < sizeof(incomingFrame) - 2; i++) { // loop bytes ignore checksum bytes
            tempChecksum += bytePointer[i];
        }
        if (tempChecksum != incomingFrame.checksum) {
            std::cerr << "Error! Packet has become corrupted! (Checksum error)";
        } else {
            std::cout << "Data integrity validated..." << std::endl;
            std::cout << "Temperature " << incomingFrame.temperature / 100.0 << "°C" << std::endl;
            std::cout << "Voltage " << incomingFrame.voltage / 1000.0 << "V" << std::endl;
        }
    }

    return 0;
}