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65 lines
2.7 KiB
C
65 lines
2.7 KiB
C
#ifndef EMC2101_H_
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#define EMC2101_H_
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#define EMC2101_I2CADDR_DEFAULT 0x4C ///< EMC2101 default i2c address
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#define EMC2101_CHIP_ID 0x16 ///< EMC2101 default device id from part id
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#define EMC2101_ALT_CHIP_ID 0x28 ///< EMC2101 alternate device id from part id
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#define EMC2101_WHOAMI 0xFD ///< Chip ID register
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#define EMC2101_INTERNAL_TEMP 0x00 ///< The internal temperature register
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#define EMC2101_EXTERNAL_TEMP_MSB 0x01 ///< high byte for the external temperature reading
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#define EMC2101_EXTERNAL_TEMP_LSB 0x10 ///< low byte for the external temperature reading
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#define EMC2101_STATUS 0x02 ///< Status register
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#define EMC2101_REG_CONFIG 0x03 ///< configuration register
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#define EMC2101_REG_DATA_RATE 0x04 ///< Data rate config
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#define EMC2101_TEMP_FORCE 0x0C ///< Temp force setting for LUT testing
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#define EMC2101_TACH_LSB 0x46 ///< Tach RPM data low byte
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#define EMC2101_TACH_MSB 0x47 ///< Tach RPM data high byte
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#define EMC2101_TACH_LIMIT_LSB 0x48 ///< Tach low-speed setting low byte. INVERSE OF THE SPEED
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#define EMC2101_TACH_LIMIT_MSB 0x49 ///< Tach low-speed setting high byte. INVERSE OF THE SPEED
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#define EMC2101_FAN_CONFIG 0x4A ///< General fan config register
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#define EMC2101_FAN_SPINUP 0x4B ///< Fan spinup behavior settings
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#define EMC2101_REG_FAN_SETTING 0x4C ///< Fan speed for non-LUT settings, as a % PWM duty cycle
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#define EMC2101_PWM_FREQ 0x4D ///< PWM frequency setting
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#define EMC2101_PWM_DIV 0x4E ///< PWM frequency divisor
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#define EMC2101_LUT_HYSTERESIS 0x4F ///< The hysteresis value for LUT lookups when temp is decreasing
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#define EMC2101_LUT_START 0x50 ///< The first temp threshold register
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#define EMC2101_TEMP_FILTER 0xBF ///< The external temperature sensor filtering behavior
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#define EMC2101_REG_PARTID 0xFD ///< 0x16
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#define EMC2101_REG_MFGID 0xFE ///< 0xFF16
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#define MAX_LUT_SPEED 0x3F ///< 6-bit value
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#define MAX_LUT_TEMP 0x7F ///< 7-bit
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#define EMC2101_I2C_ADDR 0x4C ///< The default I2C address
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#define EMC2101_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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EMC2101_RATE_1_16_HZ, ///< 1_16_HZ
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EMC2101_RATE_1_8_HZ, ///< 1_8_HZ
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EMC2101_RATE_1_4_HZ, ///< 1_4_HZ
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EMC2101_RATE_1_2_HZ, ///< 1_2_HZ
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EMC2101_RATE_1_HZ, ///< 1_HZ
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EMC2101_RATE_2_HZ, ///< 2_HZ
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EMC2101_RATE_4_HZ, ///< 4_HZ
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EMC2101_RATE_8_HZ, ///< 8_HZ
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EMC2101_RATE_16_HZ, ///< 16_HZ
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EMC2101_RATE_32_HZ, ///< 32_HZ
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} emc2101_rate_t;
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void EMC2101_set_fan_speed(float);
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//void EMC2101_read(void);
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uint16_t EMC2101_get_fan_speed(void);
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void EMC2101_init(void);
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float EMC2101_get_chip_temp(void);
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#endif /* EMC2101_H_ */ |