eive-obsw/mission/devices/Max31865PT1000Handler.h

119 lines
4.5 KiB
C
Raw Normal View History

2021-03-13 14:42:30 +01:00
#ifndef MISSION_DEVICES_MAX31865PT1000HANDLER_H_
#define MISSION_DEVICES_MAX31865PT1000HANDLER_H_
#include <OBSWConfig.h>
#include <fsfw/devicehandlers/DeviceHandlerBase.h>
#include <fsfw/globalfunctions/PeriodicOperationDivider.h>
#include <array>
#include <cstdint>
2022-01-17 15:58:27 +01:00
2021-03-13 14:42:30 +01:00
#include "devicedefinitions/Max31865Definitions.h"
/**
* @brief Device Handler for the thermal sensors
* @details
* Documentation of devices:
* MAX31865 RTD converter:
* https://datasheets.maximintegrated.com/en/ds/MAX31865.pdf
* Pt1000 platinum resistance thermometers OMEGA F2020-1000-1/3B:
* https://br.omega.com/omegaFiles/temperature/pdf/F1500_F2000_F4000.pdf
*
* The thermal sensor values are measured using the MAX31865 RTD converter IC
* which creates digital values from the measured resistance of the Pt1000
* devices which can be read with the SPI interface.
* Refer to the SOURCE system schematic for the exact setup and number
* of devices.
*
* @author R. Mueller
* @ingroup devices
*/
2022-01-17 15:58:27 +01:00
class Max31865PT1000Handler : public DeviceHandlerBase {
public:
Max31865PT1000Handler(object_id_t objectId, object_id_t comIF, CookieIF *comCookie);
virtual ~Max31865PT1000Handler();
// Configuration in 8 digit code:
// 1. 1 for V_BIAS enabled, 0 for disabled
// 2. 1 for Auto-conversion, 0 for off
// 3. 1 for 1-shot enabled, 0 for disabled (self-clearing bit)
// 4. 1 for 3-wire enabled, 0 for disabled (two and four wired RTD)
// 5./6. Fault detection: 00 for no action, 01 for automatic delay, 1
// 0 for run fault detection with manual delay,
// 11 for finish fault detection with manual delay
// 7. Fault status: Write 1 to reset fault status register (Bit is self cleared afterwards)
// 8. 1 for 50 Hz filter, 0 for 60 Hz filter (noise rejection filter)
static constexpr uint8_t DEFAULT_CONFIG = 0b11000001;
void setInstantNormal(bool instantNormal);
/**
* Expected temperature range is -100 C and 100 C.
* If there are temperatures beyond this range there must be a fault.
* The threshold variables cause the MAX1385 to signal an error in case the measured resistance
* indicates a temperature higher than 100 C or lower than -100 C.
* Default settings of MAX13865 are 0xFFFF for the high threshold register and 0x0 for the
* low threshold register.
*/
static constexpr uint16_t HIGH_THRESHOLD = 11298; // = 100 C
static constexpr uint16_t LOW_THRESHOLD = 4902; // = -100 C
static constexpr float RTD_RREF_PT1000 = 4020.0; //!< Ohm
static constexpr float RTD_RESISTANCE0_PT1000 = 1000.0; //!< Ohm
protected:
// DeviceHandlerBase abstract function implementation
void doStartUp() override;
void doShutDown() override;
ReturnValue_t buildNormalDeviceCommand(DeviceCommandId_t *id) override;
ReturnValue_t buildTransitionDeviceCommand(DeviceCommandId_t *id) override;
ReturnValue_t buildCommandFromCommand(DeviceCommandId_t deviceCommand, const uint8_t *commandData,
size_t commandDataLen) override;
void fillCommandAndReplyMap() override;
ReturnValue_t scanForReply(const uint8_t *start, size_t remainingSize, DeviceCommandId_t *foundId,
size_t *foundLen) override;
ReturnValue_t interpretDeviceReply(DeviceCommandId_t id, const uint8_t *packet) override;
uint32_t getTransitionDelayMs(Mode_t modeFrom, Mode_t modeTo) override;
ReturnValue_t getSwitches(const uint8_t **switches, uint8_t *numberOfSwitches) override;
void debugInterface(uint8_t positionTracker = 0, object_id_t objectId = 0,
uint32_t parameter = 0) override;
ReturnValue_t initializeLocalDataPool(localpool::DataPool &localDataPoolMap,
LocalDataPoolManager &poolManager) override;
void modeChanged() override;
private:
uint8_t switchId = 0;
2022-03-22 20:35:37 +01:00
bool instantNormal = false;
2022-03-22 19:30:10 +01:00
bool warningSwitch = true;
2022-01-17 15:58:27 +01:00
enum class InternalState {
NONE,
WARMUP,
CONFIGURE,
CONFIG_HIGH_THRESHOLD,
REQUEST_HIGH_THRESHOLD,
CONFIG_LOW_THRESHOLD,
REQUEST_LOW_THRESHOLD,
REQUEST_CONFIG,
RUNNING,
REQUEST_FAULT_BYTE,
CLEAR_FAULT_BYTE
};
InternalState internalState = InternalState::NONE;
bool commandExecuted = false;
bool resetFaultBit = false;
dur_millis_t startTime = 0;
uint8_t faultByte = 0;
std::array<uint8_t, 3> commandBuffer{0};
Max31865Definitions::Max31865Set sensorDataset;
sid_t sensorDatasetSid;
#if OBSW_VERBOSE_LEVEL >= 1
2022-01-17 15:58:27 +01:00
PeriodicOperationDivider *debugDivider;
#endif
};
2021-03-13 14:42:30 +01:00
#endif /* MISSION_DEVICES_MAX31865PT1000HANDLER_H_ */