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mission/tcs/Max31865PT1000Handler.h
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mission/tcs/Max31865PT1000Handler.h
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#ifndef MISSION_TCS_MAX31865PT1000HANDLER_H_
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#define MISSION_TCS_MAX31865PT1000HANDLER_H_
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#include <OBSWConfig.h>
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#include <fsfw/devicehandlers/DeviceHandlerBase.h>
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#include <fsfw/globalfunctions/PeriodicOperationDivider.h>
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#include <mission/tcs/Max31865Definitions.h>
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#include <array>
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#include <cstdint>
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/**
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* @brief Device Handler for the thermal sensors
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* @details
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* Documentation of devices:
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* MAX31865 RTD converter:
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* https://datasheets.maximintegrated.com/en/ds/MAX31865.pdf
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* Pt1000 platinum resistance thermometers OMEGA F2020-1000-1/3B:
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* https://br.omega.com/omegaFiles/temperature/pdf/F1500_F2000_F4000.pdf
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*
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* The thermal sensor values are measured using the MAX31865 RTD converter IC
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* which creates digital values from the measured resistance of the Pt1000
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* devices which can be read with the SPI interface.
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* Refer to the SOURCE system schematic for the exact setup and number
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* of devices.
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*
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* @author R. Mueller
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* @ingroup devices
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*/
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class Max31865PT1000Handler : public DeviceHandlerBase {
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public:
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Max31865PT1000Handler(object_id_t objectId, object_id_t comIF, CookieIF *comCookie);
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virtual ~Max31865PT1000Handler();
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void setDebugMode(bool enable);
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// Configuration in 8 digit code:
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// 1. 1 for V_BIAS enabled, 0 for disabled
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// 2. 1 for Auto-conversion, 0 for off
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// 3. 1 for 1-shot enabled, 0 for disabled (self-clearing bit)
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// 4. 1 for 3-wire enabled, 0 for disabled (two and four wired RTD)
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// 5./6. Fault detection: 00 for no action, 01 for automatic delay, 1
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// 0 for run fault detection with manual delay,
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// 11 for finish fault detection with manual delay
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// 7. Fault status: Write 1 to reset fault status register (Bit is self cleared afterwards)
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// 8. 1 for 50 Hz filter, 0 for 60 Hz filter (noise rejection filter)
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static constexpr uint8_t DEFAULT_CONFIG = 0b11000001;
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void setInstantNormal(bool instantNormal);
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void setDeviceInfo(uint8_t idx, std::string locString);
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/**
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* Expected temperature range is -100 C and 100 C.
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* If there are temperatures beyond this range there must be a fault.
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* The threshold variables cause the MAX1385 to signal an error in case the measured resistance
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* indicates a temperature higher than 100 C or lower than -100 C.
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* Default settings of MAX13865 are 0xFFFF for the high threshold register and 0x0 for the
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* low threshold register.
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*/
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static constexpr uint16_t HIGH_THRESHOLD = 11298; // = 100 C
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static constexpr uint16_t LOW_THRESHOLD = 4902; // = -100 C
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static constexpr float RTD_RESISTANCE0_PT1000 = 1000.0; //!< Ohm
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protected:
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// DeviceHandlerBase abstract function implementation
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void doStartUp() override;
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void doShutDown() override;
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ReturnValue_t buildNormalDeviceCommand(DeviceCommandId_t *id) override;
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ReturnValue_t buildTransitionDeviceCommand(DeviceCommandId_t *id) override;
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ReturnValue_t buildCommandFromCommand(DeviceCommandId_t deviceCommand, const uint8_t *commandData,
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size_t commandDataLen) override;
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void fillCommandAndReplyMap() override;
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ReturnValue_t scanForReply(const uint8_t *start, size_t remainingSize, DeviceCommandId_t *foundId,
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size_t *foundLen) override;
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ReturnValue_t interpretDeviceReply(DeviceCommandId_t id, const uint8_t *packet) override;
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uint32_t getTransitionDelayMs(Mode_t modeFrom, Mode_t modeTo) override;
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ReturnValue_t getSwitches(const uint8_t **switches, uint8_t *numberOfSwitches) override;
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ReturnValue_t initializeLocalDataPool(localpool::DataPool &localDataPoolMap,
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LocalDataPoolManager &poolManager) override;
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void modeChanged() override;
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bool shouldFaultStatusBeRequested(bool faultBit);
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private:
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uint8_t switchId = 0;
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bool instantNormal = false;
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bool debugMode = false;
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bool warningSwitch = true;
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enum class InternalState {
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NONE,
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WARMUP,
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CONFIGURE,
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CONFIG_HIGH_THRESHOLD,
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REQUEST_HIGH_THRESHOLD,
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CONFIG_LOW_THRESHOLD,
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REQUEST_LOW_THRESHOLD,
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REQUEST_CONFIG,
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RUNNING,
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REQUEST_FAULT_BYTE,
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CLEAR_FAULT_BYTE
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};
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InternalState internalState = InternalState::NONE;
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bool commandExecuted = false;
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bool resetFaultBit = false;
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dur_millis_t startTime = 0;
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uint8_t currentCfg = 0;
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uint8_t currentFaultStatus = 0;
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uint8_t lastFaultStatus = 0;
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uint16_t sameFaultStatusCounter = 0;
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std::string locString;
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uint8_t deviceIdx = 0;
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std::array<uint8_t, 3> commandBuffer{0};
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MAX31865::PrimarySet sensorDataset;
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sid_t sensorDatasetSid;
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#if OBSW_VERBOSE_LEVEL >= 1
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PeriodicOperationDivider *debugDivider;
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#endif
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};
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#endif /* MISSION_TCS_MAX31865PT1000HANDLER_H_ */
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