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90 lines
4.0 KiB
C
90 lines
4.0 KiB
C
#ifndef EMC2302_H_
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#define EMC2302_H_
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#define EMC2302_I2CADDR_DEFAULT 0x2F ///< EMC2302 default i2c address
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#define EMC2302_WHOAMI 0xFD ///< Chip ID register
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#define EMC2302_MANUFACTURER_ID 0xFE ///< Manufacturer ID
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#define EMC2302_REVISION 0xFF ///< Chip revision
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#define EMC2302_CONFIG 0x20 ///< configuration register
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#define EMC2302_STATUS 0x24 ///< status register
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#define EMC2302_STALL_STATUS 0x25 ///< fan stall status
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#define EMC2302_SPIN_STATUS 0x26 ///< fan spin status
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#define EMC2302_DRIVE_FAIL_STATUS 0x27 ///< drive fail status
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#define EMC2302_INT_ENABLE 0x29 ///< interrupt enable register
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#define EMC2302_PWM_POLARITY 0x2A ///< PWM polarity config
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#define EMC2302_PWM_OUTPUT 0x2B ///< PWM output config
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#define EMC2302_PWM_BASEF45 0x2C ///<
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#define EMC2302_PWM_BASEF123 ///<
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#define EMC2302_FAN1_SETTING 0x30 ///< Fan 1 setting
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#define EMC2302_PWM1_DIVIDE 0x31 ///< PWM 1 divider
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#define EMC2302_FAN1_CONFIG1 0x32 ///< Fan 1 configuration 1 register
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#define EMC2302_FAN1_CONFIG2 0x33 ///< Fan 1 configuration 2 register
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#define EMC2302_GAIN1 0x35 ///< Gain 1 register
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#define EMC2302_FAN1_SPINUP_CONFIG 0x36 ///< Fan 1 spinup configuration register
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#define EMC2302_FAN1_MAX_STEP 0x37 ///< Fan 1 max step register
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#define EMC2302_FAN1_MIN_DRIVE 0x38 ///< Fan 1 minimum drive register
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#define EMC2302_FAN1_TACH_COUNT 0x39 ///< Fan 1 valid TACH count
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#define EMC2302_FAN1_DRV_FAIL_LOW 0x3A ///< Fan 1 drive fail band low byte
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#define EMC2302_FAN1_DRV_FAIL_HIGH 0x3B ///< Fan 1 drive fail band high byte
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#define EMC2302_TACH1_TARGET_LSB 0x3C ///< Tach 1 target low byte
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#define EMC2302_TACH1_TARGET_MSB 0x3D ///< Tach 1 target high byte
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#define EMC2302_TACH1_MSB 0x3E ///< Tach 1 reading low byte
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#define EMC2302_TACH1_LSB 0x3F ///< Tach 1 reading high byte
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#define EMC2302_FAN2_SETTING 0x40 ///< Fan 2 setting
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#define EMC2302_PWM2_DIVIDE 0x41 ///< PWM 2 divider
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#define EMC2302_FAN2_CONFIG1 0x42 ///< Fan 2 configuration 1 register
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#define EMC2302_FAN2_CONFIG2 0x43 ///< Fan 2 configuration 2 register
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#define EMC2302_GAIN2 0x45 ///< Gain 2 register
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#define EMC2302_FAN2_SPINUP_CONFIG 0x46 ///< Fan 2 spinup configuration register
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#define EMC2302_FAN2_MAX_STEP 0x47 ///< Fan 2 max step register
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#define EMC2302_FAN2_MIN_DRIVE 0x48 ///< Fan 2 minimum drive register
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#define EMC2302_FAN2_TACH_COUNT 0x49 ///< Fan 2 valid TACH count
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#define EMC2302_FAN2_DRV_FAIL_LOW 0x4A ///< Fan 2 drive fail band low byte
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#define EMC2302_FAN2_DRV_FAIL_HIGH 0x4B ///< Fan 2 drive fail band high byte
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#define EMC2302_TACH2_TARGET_LSB 0x4C ///< Tach 2 target low byte
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#define EMC2302_TACH2_TARGET_MSB 0x4D ///< Tach 2 target high byte
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#define EMC2302_TACH2_MSB 0x4E ///< Tach 2 reading low byte
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#define EMC2302_TACH2_LSB 0x4F ///< Tach 2 reading high byte
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#define EMC2302_SOFTWARE_LOCK 0xEF
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#define EMC2302_PRODUCT_FEATURES 0xFC
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#define EMC2302_PRODUCT_ID 0xFD
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#define EMC2302_MANUFACTURER_ID 0xFE
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#define EMC2302_SILICON_REVISION 0xFF
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#define EMC2302_FAN_RPM_NUMERATOR 5400000 ///< Conversion unit to convert LSBs to fan RPM
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#define _TEMP_LSB 0.125 ///< single bit value for internal temperature readings
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/**
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* @brief
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*
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* Allowed values for `setDataRate`.
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*/
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typedef enum
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{
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EMC2302_RATE_1_16_HZ, ///< 1_16_HZ
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EMC2302_RATE_1_8_HZ, ///< 1_8_HZ
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EMC2302_RATE_1_4_HZ, ///< 1_4_HZ
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EMC2302_RATE_1_2_HZ, ///< 1_2_HZ
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EMC2302_RATE_1_HZ, ///< 1_HZ
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EMC2302_RATE_2_HZ, ///< 2_HZ
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EMC2302_RATE_4_HZ, ///< 4_HZ
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EMC2302_RATE_8_HZ, ///< 8_HZ
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EMC2302_RATE_16_HZ, ///< 16_HZ
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EMC2302_RATE_32_HZ, ///< 32_HZ
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} emc2302_rate_t;
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void EMC2302_init(bool);
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void EMC2302_set_fan_speed(uint8_t, float);
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uint16_t EMC2302_get_fan_speed(uint8_t);
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/* EMC2302 doesn't have temperature sensors, so these are dummy functions */
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float EMC2302_get_external_temp(void);
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uint8_t EMC2302_get_internal_temp(void);
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#endif /* EMC2302_H_ */
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