PTMessage.hpp

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#ifndef PT_MESSAGE_HPP
#define PT_MESSAGE_HPP
 
#include <array>
#include <cstdint>
 
#include "CommsMessage.hpp"
 
/**
 * @brief PT Location enumeration for engine system
 */
enum class PTLocation {
    PRESSURANT_TANK = 0,  // Pressurant tank PT
    KERO_INLET = 1,       // Kero Inlet PT
    KERO_OUTLET = 2,      // Kero Outlet PT
    LOX_INLET = 3,        // Lox Inlet PT
    LOX_OUTLET = 4,       // Lox Outlet PT
    INJECTOR = 5,         // Injector PT
    CHAMBER_WALL_1 = 6,   // Chamber Wall PT #1
    CHAMBER_WALL_2 = 7,   // Chamber Wall PT #2
    NOZZLE_EXIT = 8,      // Nozzle Exit PT
    UNKNOWN = 9           // Unknown/Unused
};
 
/**
 * @brief Pressure Transducer Message - Raw Rec18 format from ESP32
 *
 * Matches the Rec18 struct from Arduino exactly
 */
using PTMessage = comms::CommsMessage<uint8_t,    // (0) ch - channel id
                                      uint8_t,    // (1) ok - 0 or 1
                                      uint16_t,   // (2) padding - for 4-byte alignment
                                      uint32_t,   // (3) raw - ADC code
                                      uint32_t,   // (4) sample_time - per-sample timestamp
                                      uint32_t,   // (5) read_time_dur - per read()
                                      uint32_t>;  // (6) conv_time_dur - wait for DRDY
 
// Function to set PT sensor measurements with raw voltage
static void set_pt_measurement(PTMessage& message, uint64_t timestamp_ns, uint8_t sensor_id,
                               double raw_voltage_v, PTLocation location) {
    message.setField<0>(timestamp_ns);
    message.setField<1>(sensor_id);
    message.setField<2>(raw_voltage_v);
    message.setField<3>(static_cast<uint8_t>(location));
}
 
// Helper function to get PT location name
static std::string getPTLocationName(PTLocation location) {
    switch (location) {
        case PTLocation::PRESSURANT_TANK:
            return "Pressurant Tank";
        case PTLocation::KERO_INLET:
            return "Kero Inlet";
        case PTLocation::KERO_OUTLET:
            return "Kero Outlet";
        case PTLocation::LOX_INLET:
            return "Lox Inlet";
        case PTLocation::LOX_OUTLET:
            return "Lox Outlet";
        case PTLocation::INJECTOR:
            return "Injector";
        case PTLocation::CHAMBER_WALL_1:
            return "Chamber Wall #1";
        case PTLocation::CHAMBER_WALL_2:
            return "Chamber Wall #2";
        case PTLocation::NOZZLE_EXIT:
            return "Nozzle Exit";
        case PTLocation::UNKNOWN:
            return "Unknown";
        default:
            return "Invalid";
    }
}
 
static PTMessage generateTestMessagePT() {
    PTMessage message;
    set_pt_measurement(message, 0, 0, 2.5, PTLocation::PRESSURANT_TANK);  // 2.5V raw reading
    return message;
}
 
// Specialized PT messages for different locations
using PTChamberMessage = PTMessage;       // Chamber pressure PT
using PTFuelInletMessage = PTMessage;     // Fuel inlet PT
using PTOxInletMessage = PTMessage;       // Oxidizer inlet PT
using PTCoolantInletMessage = PTMessage;  // Coolant inlet PT
using PTIgniterMessage = PTMessage;       // Igniter PT
 
#endif  // PT_MESSAGE_HPP