mirror of https://github.com/rusefi/rusefi-1.git
153 lines
4.4 KiB
C++
153 lines
4.4 KiB
C++
/*
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* @file CJ125_logic.h
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*
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* @date Feb 1, 2019
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* @author Andrey Belomutskiy, (c) 2012-2020
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*/
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#ifndef HW_LAYER_SENSORS_CJ125_LOGIC_H_
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#define HW_LAYER_SENSORS_CJ125_LOGIC_H_
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#include "engine_configuration.h"
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#include "pwm_generator_logic.h"
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#include "pid.h"
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typedef enum {
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CJ125_LSU_42 = 0,
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CJ125_LSU_49 = 1,
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} cj125_sensor_type_e;
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typedef enum {
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CJ125_INIT,
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CJ125_IDLE,
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CJ125_CALIBRATION,
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CJ125_PREHEAT,
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CJ125_HEAT_UP,
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CJ125_READY,
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CJ125_OVERHEAT,
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CJ125_ERROR,
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} cj125_state_e;
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typedef enum {
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CJ125_NO_ERROR = 0,
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CJ125_ERROR_HEATER_MALFUNCTION = 1,
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CJ125_ERROR_OVERHEAT = 2,
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CJ125_ERROR_WRONG_IDENT = 3,
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CJ125_ERROR_WRONG_INIT = 4,
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CJ125_ERROR_DISABLED = 5,
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} cj125_error_e;
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typedef enum {
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CJ125_MODE_NONE,
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CJ125_MODE_NORMAL_8,
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CJ125_MODE_NORMAL_17,
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CJ125_MODE_CALIBRATION,
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} cj125_mode_e;
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class Cj125SpiStream {
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public:
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virtual uint8_t ReadRegister(uint8_t regAddr) = 0;
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virtual void WriteRegister(uint8_t regAddr, uint8_t regValue) = 0;
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};
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class CJ125 {
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public:
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CJ125();
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Cj125SpiStream *spi = NULL;
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Logging *logger = NULL;
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SimplePwm wboHeaterControl;
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// Chip diagnostics register contents
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volatile int diag = 0;
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efitick_t startHeatingNt;
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efitick_t prevNt;
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float heaterDuty = 0.0f;
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pid_s heaterPidConfig;
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Pid heaterPid;
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volatile cj125_mode_e mode = CJ125_MODE_NONE;
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// Amplification coefficient, needed by cjGetAfr()
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volatile float amplCoeff = 0.0f;
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// Calculated Lambda-value
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volatile float lambda = 1.0f;
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// Current values
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volatile float vUa = 0.0f;
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volatile float vUr = 0.0f;
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// Calibration values
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volatile float vUaCal = 0.0f;
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volatile float vUrCal = 0.0f;
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OutputPin wboHeaterPin;
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OutputPin cj125Cs;
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// Used by CJ125 driver state machine
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volatile cj125_state_e state = CJ125_INIT;
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// Last Error code
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volatile cj125_error_e errorCode = CJ125_NO_ERROR;
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void setError(cj125_error_e errCode DECLARE_ENGINE_PARAMETER_SUFFIX);
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bool isWorkingState(void) const;
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void SetHeater(float value DECLARE_ENGINE_PARAMETER_SUFFIX);
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void SetIdleHeater(DECLARE_ENGINE_PARAMETER_SIGNATURE);
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void StartHeaterControl(pwm_gen_callback *stateChangeCallback DECLARE_ENGINE_PARAMETER_SUFFIX);
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bool cjIdentify(void);
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void cjSetMode(cj125_mode_e m);
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bool isValidState() const;
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void cjInitPid(DECLARE_ENGINE_PARAMETER_SIGNATURE);
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};
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// Heater params for Idle(cold), Preheating and Control stages
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// See http://www.waltech.com/wideband-files/boschsensordatasheet.htm
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#define CJ125_HEATER_IDLE_RATE 0.15f // for a very cold sensor (presumably), we allow 15% duty max.
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#define CJ125_HEATER_PREHEAT_PERIOD 300 // 300 ms
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#define CJ125_HEATER_CONTROL_PERIOD 180 // 180 ms
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#define CJ125_HEATER_OVERHEAT_PERIOD 500 // 500 ms
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#define CJ125_HEATER_PREHEAT_RATE (0.4f/14.0f) // Assuming that dutycycle=1.0 equals to 14V, and max.allowed heater rate is 0.4V/sec
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#define CJ125_HEATER_MIN_DUTY 0.1f
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#define CJ125_HEATER_PWM_FREQ 100 // 100 Hz
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#define CJ125_HEATER_LIMITING_VOLTAGE 12.0f // Do not allow more than 90% heating for high battery voltage (>12V).
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#define CJ125_HEATER_LIMITING_RATE 0.92f // This prevents sensor overheating.
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// CJ125 SPI Registers
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#define IDENT_REG_RD 0x48 // Read Identity Register
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#define INIT_REG1_WR 0x56 // Write To Initialization Register 1
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#define INIT_REG2_WR 0x5A // Write To Initialization Register 2
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#define INIT_REG1_RD 0x6C // Read Initialization Register 1
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#define DIAG_REG_RD 0x78 // Read Diagnostics Register
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#define INIT_REG2_RD 0x7E // Read Initialization Register 2
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#define CJ125_IDENT 0x60 // 96
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#define CJ125_IDENT_MASK 0xF8
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#define CJ125_INIT1_NORMAL_8 0x88 // 0b10001000 (Normal mode, Amplification 8)
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#define CJ125_INIT1_NORMAL_17 0x89 // 0b10001001 (Normal mode, Amplification 17)
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#define CJ125_INIT1_CALBRT 0x9D // 0b10011101 (Calibration mode, LA=1, RA=1)
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#define CJ125_INIT2_NORMAL 0x00 // 0b00000000, (Normal mode)
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#define CJ125_INIT2_DIAG 0x10 // 0b00010000, (Extended diagnostics mode, SET_DIA_Q=1)
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#define CJ125_INIT2_RESET 0x40 // 0b01000000, SRESET=1
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#define CJ125_DIAG_NORM 0xFF // no errors
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#define CJ125_UACAL_MIN 1.0f // Calibration UA values range
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#define CJ125_UACAL_MAX 2.0f
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// Some experimental magic values for heater PID regulator
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#define CJ125_PID_LSU42_P (80.0f / 16.0f * 5.0f / 1024.0f)
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#define CJ125_PID_LSU42_I (25.0f / 16.0f * 5.0f / 1024.0f)
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#define CJ125_PID_LSU49_P (8.0f)
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#define CJ125_PID_LSU49_I (0.003f)
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#endif /* HW_LAYER_SENSORS_CJ125_LOGIC_H_ */
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