sps_cfg.h

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 *
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/**
 * @file    sps_cfg.h
 * @author  foxBMS Team
 * @date    2020-10-14 (date of creation)
 * @updated 2020-10-14 (date of last update)
 * @ingroup DRIVERS_CONF
 * @prefix  SPS
 *
 * @brief   Header for the configuration for the driver for the smart power switches
 *
 */
 
#ifndef FOXBMS__SPS_CFG_H_
#define FOXBMS__SPS_CFG_H_
 
/*========== Includes =======================================================*/
#include "general.h"
 
#include "battery_system_cfg.h"
 
#include "sps_types.h"
 
/*========== Macros and Definitions =========================================*/
 
/** GIO defines for pin to drive reset line of SPS @{ */
#define SPS_RESET_GIOPORT     (hetREG2->DOUT)
#define SPS_RESET_GIOPORT_DIR (hetREG2->DIR)
#define SPS_RESET_PIN         (16u)
/**@}*/
 
/** Each SPS IC has four outputs */
#define SPS_NR_CONTACTOR_PER_IC (4u)
 
/** Number of SPS IC that are populated on the hardware (in daisy-chain) */
#define SPS_NR_OF_IC (3u)
 
/** One channel for each contactor is required in this application */
#define SPS_NR_OF_REQUIRED_CONTACTOR_CHANNELS (BS_NR_OF_CONTACTORS)
 
/** Calculate the number of available SPS channels */
#define SPS_NR_OF_AVAILABLE_SPS_CHANNELS (SPS_NR_CONTACTOR_PER_IC * SPS_NR_OF_IC)
 
/* check if the number of contactors fits in the available channels */
#if (SPS_NR_OF_REQUIRED_CONTACTOR_CHANNELS > SPS_NR_OF_AVAILABLE_SPS_CHANNELS)
#error "Not enough contactor channels available for the required number of contactors."
#endif
 
/** Defines the buffer size to communicate with the SPS IC.
 *
 * One 16 bit word per SPS IC so buffer size is equivalent to the number of
 * SPS ICs.
 *
 *  - 1 SPS IC -> Buffer size = 1
 *  - 2 SPS IC -> Buffer size = 2
 *  - 3 SPS IC -> Buffer size = 3
 */
#define SPS_SPI_BUFFERSIZE SPS_NR_OF_IC
 
/** Addresses of used control registers @{ */
#define SPS_GLOBAL_CONTROL_REGISTER_ADDRESS (0x00u)
#define SPS_OUTPUT_CONTROL_REGISTER_ADDRESS (0x02u)
#define SPS_C_CONTROL_REGISTER_ADDRESS      (0x16u)
/**@}*/
/** Addresses of used diagnostic registers @{ */
#define SPS_OD_IOUT1_DIAG_REGISTER_ADDRESS    (0x08u)
#define SPS_OD_IOUT2_DIAG_REGISTER_ADDRESS    (0x09u)
#define SPS_OD_IOUT3_DIAG_REGISTER_ADDRESS    (0x0Au)
#define SPS_OD_IOUT4_DIAG_REGISTER_ADDRESS    (0x0Bu)
#define SPS_EN_IRQ_PIN_DIAG_REGISTER_ADDRESS  (0x11u)
#define SPS_EN_WARN_PIN_DIAG_REGISTER_ADDRESS (0x13u)
/**@}*/
 
/**
 * These bits and positions are defined in
 * figure 7 page 10 in datasheet Rev. 2 - 11 September 2019
 */
/** This bit is set to 0 for a read register access, to 1 for a write register access */
#define SPS_RW_BIT_POSITION (15u)
/** Define for read register access */
#define SPS_RW_READ (0u)
/** Define for write register access */
#define SPS_RW_WRITE (1u)
/** In Tx SPI buffer, register address starts at bit 8 */
#define SPS_ADDRESS_BIT_START (8u)
/** This bit is set to 0 to read a diagnostic register, to 1 to read a control register */
#define SPS_DIAG_CTRL_BIT_POSITION (7u)
 
/** value for the SPS normal mode */
#define SPS_NORMAL_MODE (0x01u)
/** value for the SPS strong drive */
#define SPS_STRONG_DRIVE (0x00u)
/** value for the SPS medium drive */
#define SPS_MEDIUM_DRIVE (0x01u)
/** bitshift for the mode bit in the SPS
 *
 * used for bitshifting #SPS_NORMAL_MODE to the right position
 */
#define SPS_MODE_BIT_START (6u)
/** bitshift for the drive strength bit in the SPS */
#define SPS_DRIVE_STRENGTH_BIT_START (5u)
 
/** LSB of current measurement of SPS channel in mA */
#define SPS_I_MEASUREMENT_LSB_mA (0.98f)
 
/** current threshold that recognizes a contactor as closed */
#define SPS_CHANNEL_ON_DEFAULT_THRESHOLD_mA (20.0f)
 
/** bitmask for reading the on-demand output current from a SPI transaction */
#define SPS_BITMASK_DIAGNOSTIC_ONDEMAND_OUTPUT_CURRENT (0x1FFFu)
 
/** spi block identification numbers */
typedef enum SPS_WRITE_TYPE {
    SPS_replaceCurrentValue,
    SPS_orWithCurrentValue,
    SPS_andWithCurrentValue,
} SPS_WRITE_TYPE_e;
 
/** sps read types */
typedef enum SPS_READ_TYPE {
    SPS_READ_DIAGNOSTIC_REGISTER, /*!< diagnostic register read */
    SPS_READ_CONTROL_REGISTER,    /*!< control register read */
} SPS_READ_TYPE_e;
 
/** functional state of a SPS channel */
typedef enum SPS_CHANNEL_FUNCTION {
    SPS_CHANNEL_OFF, /*!< sps channel is switched off */
    SPS_CHANNEL_ON,  /*!< sps channel is switched on */
} SPS_CHANNEL_FUNCTION_e;
 
/** SPS channel state */
typedef struct SPS_CHANNEL_STATE {
    SPS_CHANNEL_FUNCTION_e channelRequested; /*!< requested state of the channel */
    SPS_CHANNEL_FUNCTION_e channel;          /*!< state of the channel */
    float current_mA;                        /*!< current flow in this channel in mA */
    const SPS_CHANNEL_AFFILIATION_e
        affiliation;                    /*!< affiliation of the channel (if it is contactor or something else) */
    const float thresholdFeedbackOn_mA; /*!< current threshold in mA above which the channel is considered "on" */
} SPS_CHANNEL_STATE_s;
 
/*================== Main precharge configuration ====================*/
 
/*========== Extern Constant and Variable Declarations ======================*/
 
/** State for the CONT handling */
typedef enum SPS_STATE {
    SPS_START,
    SPS_RESET_LOW,
    SPS_RESET_HIGH,
    SPS_CONFIGURE_CONTROL_REGISTER,
    SPS_TRIGGER_CURRENT_MEASUREMENT,
    SPS_READ_MEASURED_CURRENT1,
    SPS_READ_MEASURED_CURRENT2,
    SPS_READ_MEASURED_CURRENT3,
    SPS_READ_MEASURED_CURRENT4,
    SPS_READ_EN_IRQ_PIN,
} SPS_STATE_e;
 
/** Actions to do for the Smart Power Switch IC */
typedef enum SPS_ACTION {
    SPS_ACTION_CONFIGURE_CONTROL_REGISTER,
    SPS_ACTION_TRIGGER_CURRENT_MEASUREMENT,
    SPS_ACTION_READ_CURRENT_MEASUREMENT1,
    SPS_ACTION_READ_CURRENT_MEASUREMENT2,
    SPS_ACTION_READ_CURRENT_MEASUREMENT3,
    SPS_ACTION_READ_CURRENT_MEASUREMENT4,
    SPS_ACTION_READ_EN_IRQ_PIN,
} SPS_ACTION_e;
 
extern SPS_CHANNEL_STATE_s sps_channelStatus[SPS_NR_OF_AVAILABLE_SPS_CHANNELS];
 
/*========== Extern Function Prototypes =====================================*/
 
/*========== Externalized Static Functions Prototypes (Unit Test) ===========*/
 
#endif /* FOXBMS__SPS_CFG_H_ */