state_machine.h

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/***************************************************************************/
#ifndef __STATE_MACHINE_H__
#define __STATE_MACHINE_H__
 
/******************************************************************************/
/***************************** Include Files **********************************/
/******************************************************************************/
#include <stdint.h>
 
/******************************************************************************/
/********************** Macros and Constants Definitions **********************/
/******************************************************************************/
 
#define FIRMWARE_VERSION    ("v30923")
#define LED_NO          (4u)
 
/******************************************************************************/
/**************************** Enumerations ************************************/
/******************************************************************************/
enum charger_state_e {
    STATE_POWER_ON = 0,
    STATE_RCD_SELF_TEST,
    STATE_A,
    STATE_B,
    STATE_C,
    STATE_D,
    STATE_RELAY_OPEN,
    STATE_CHECK_RELAY,
    STATE_FAULT
};
 
enum interface_err_status_e {
    /* No error */
    INTF_NO_ERR = 0,
    /* Relay error */
    INTF_RELAY_ERR,
    /* Input Vin error*/
    INTF_INPUT_V_ERR,
    /* Input undervoltage*/
    INTF_INPUT_V_ERR_U,
    /*Input overvoltage*/
    INTF_INPUT_V_ERR_O,
    /* RCD error */
    INTF_RCD_ERROR,
    /* Init RCD error */
    INTF_INIT_RCD_ERROR,
    /* Pilot error */
    INTF_PILOT_ERROR,
    /* Diode error */
    INTF_DIODE_ERR,
    /* Overcurrent */
    INTF_OVERCURRENT_ERR,
    /* Overtemperature fault*/
    INTF_TEMPERATURE_ERR,
#if defined(REV_D)
    /*PE upstream error*/
    INTF_PE_UPSTREAM_ERR,
#endif
    /*PE fault*/
    INTF_PE_ERROR
};
 
enum state_machine_events_e {
    /* Supply undervoltage */
    S_M_UNDERVOLTAGE = 0,
    /* RCD */
    S_M_RCD,
    /* Overcurrent */
    S_M_OVERCURRENT,
    /* EV disconnected/no Earth */
    S_M_DISCONNECTED,
    /* Diode error */
    S_M_DIODE_ERR,
    /* Pilot error */
    S_M_CP_ERROR,
    /* RCD test initiated  */
    S_M_RCD_TEST_TRIGGERED,
    /* RCD test completed  */
    S_M_RCD_TEST_COMPLETED,
    /* RCD test failed  */
    S_M_RCD_TEST_FAIL,
    /* Ventilation required */
    S_M_VENTILATION_REQ,
    /* Wait for 5 seconds for check overcurrent */
    S_M_OVERCURRENT_WAIT,
    /* No event */
    S_M_NO_EVENT,
    /*Initial check done*/
    S_M_INITIAL_CHECK_DONE,
    /*Wait*/
    S_M_WAIT,
    /*EV connected*/
    S_M_EV_CONNECTED,
    /*Charging C*/
    S_M_CHARGING,
    /*Charging D*/
    S_M_CHARGING_D,
    /*Charging stopped*/
    S_M_CHARGING_STOPPED,
    /* EVSE ready*/
    S_M_EVSE_READY,
    /* Charging session requested*/
    S_M_CHARGING_REQ,
    /* Charging started*/
    S_M_CHARGING_START,
    /* Stop charging*/
    S_M_STOP_CHARGING,
    /* Stop charging when cable unplugged while charging*/
    S_M_STOP_CHARGING_2,
    /*Check relay*/
    S_M_CHECK_STUCK_RELAY,
    /*Relay check passed*/
    S_M_CHECK_RELAY_PASSED,
    /*IDLE B*/
    S_M_WAIT_B,
    /*Diode check*/
    S_M_DIODE_ERR_CHECK,
    /*Diode check done*/
    S_M_DIODE_CHECK_DONE,
    /*Vin undervoltage recovered*/
    S_M_VIN_RECOVER,
    /*Undervoltage wait*/
    S_M_UNDERVOLTAGE_WAIT,
    /*Overtemeperature 1 reduce power*/
    S_M_OVER_TEMPERATURE_1,
    /*Overtemperature 2 stop*/
    S_M_OVER_TEMPERATURE_2,
    /*Overvoltage*/
    S_M_OVERVOLTAGE,
    /*PE error*/
    S_M_PE_ERROR
 
};
 
/******************************************************************************/
/*********************** Structures Declarations ******************************/
/******************************************************************************/
struct stout {
    /* AD9113 device structure */
    struct ade9113_dev *ade9113;
    /* Relay descriptor */
    struct no_os_gpio_desc *relay;
    /* LED descriptors */
    struct no_os_gpio_desc *gpio_led[LED_NO];
    /* Current state */
    enum charger_state_e current_state;
    /* Previous state */
    enum charger_state_e previous_state;
    /* PWM low value measured */
    uint32_t pwm_low_val;
    /* PWM low value measured */
    uint32_t pwm_high_val;
    /* V2 max */
    int32_t v2_val;
    /* V2 max */
    int32_t v1_val;
    /* I val */
    int32_t i_val;
    /* Temperature*/
    int32_t temperature;
    /* Pilot AC/DC */
    uint8_t ac_dc;
    /* grid type 0 - 230V, 1 - 120V*/
    uint8_t grid;
    /* Maximum current */
    uint16_t i_limit;
    /* Maximum current not charging*/
    uint16_t i_limit_not_ch;
    /* RCD pins */
    struct no_os_gpio_desc *gpio_rcm_test;
    struct no_os_gpio_desc *gpio_rcddc;
    struct no_os_gpio_desc *gpio_rcdac;
    /* Current error status */
    enum interface_err_status_e err_status;
};
 
struct rms_adc_values {
 
    /* I rms value */
    int32_t             i_rms;
    /* V1 rms value */
    int32_t             v1_rms;
    /* V2 rms value */
    int32_t             v2_rms;
    /* I ADC value */
    int32_t             i_rms_adc;
    /* V1 ADC value */
    int32_t             v1_rms_adc;
    /* V2 ADC value */
    int32_t             v2_rms_adc;
};
 
/******************************************************************************/
/************************ Functions Declarations ******************************/
/******************************************************************************/
int state_machine();
 
enum state_machine_events_e state_machine_det_event_cp(struct stout *stout,
        enum state_machine_events_e event_in);
 
enum state_machine_events_e state_machine_det_event_supply(struct stout *stout,
        enum state_machine_events_e event_in);
 
enum state_machine_events_e state_machine_det_event_temperature(
    struct stout *stout,
    enum state_machine_events_e event_in);
 
uint16_t get_action(void);
 
void set_action_flag(void);
 
void reset_action_flag(void);
 
void inc_action_flag(void);
 
void start_charging(void);
 
void stop_charging(void);
 
uint8_t car_is_charging(void);
 
#endif /* __STATE_MACHINE_H__ */