ESP-Miner/main/EMC2101.h

#ifndef EMC2101_H_
#define EMC2101_H_

#define EMC2101_I2CADDR_DEFAULT 0x4C ///< EMC2101 default i2c address
#define EMC2101_CHIP_ID 0x16         ///< EMC2101 default device id from part id
#define EMC2101_ALT_CHIP_ID 0x28 ///< EMC2101 alternate device id from part id
#define EMC2101_WHOAMI 0xFD      ///< Chip ID register

#define EMC2101_INTERNAL_TEMP 0x00 ///< The internal temperature register
#define EMC2101_EXTERNAL_TEMP_MSB 0x01 ///< high byte for the external temperature reading
#define EMC2101_EXTERNAL_TEMP_LSB 0x10 ///< low byte for the external temperature reading

#define EMC2101_STATUS 0x02        ///< Status register
#define EMC2101_REG_CONFIG 0x03    ///< configuration register
#define EMC2101_REG_DATA_RATE 0x04 ///< Data rate config
#define EMC2101_TEMP_FORCE 0x0C    ///< Temp force setting for LUT testing
#define EMC2101_TACH_LSB 0x46      ///< Tach RPM data low byte
#define EMC2101_TACH_MSB 0x47      ///< Tach RPM data high byte
#define EMC2101_TACH_LIMIT_LSB 0x48 ///< Tach low-speed setting low byte. INVERSE OF THE SPEED
#define EMC2101_TACH_LIMIT_MSB 0x49 ///< Tach low-speed setting high byte. INVERSE OF THE SPEED
#define EMC2101_FAN_CONFIG 0x4A ///< General fan config register
#define EMC2101_FAN_SPINUP 0x4B ///< Fan spinup behavior settings
#define EMC2101_REG_FAN_SETTING 0x4C ///< Fan speed for non-LUT settings, as a % PWM duty cycle
#define EMC2101_PWM_FREQ 0x4D ///< PWM frequency setting
#define EMC2101_PWM_DIV 0x4E  ///< PWM frequency divisor
#define EMC2101_LUT_HYSTERESIS 0x4F ///< The hysteresis value for LUT lookups when temp is decreasing

#define EMC2101_LUT_START 0x50 ///< The first temp threshold register

#define EMC2101_TEMP_FILTER 0xBF ///< The external temperature sensor filtering behavior
#define EMC2101_REG_PARTID 0xFD ///< 0x16
#define EMC2101_REG_MFGID 0xFE  ///< 0xFF16

#define MAX_LUT_SPEED 0x3F ///< 6-bit value
#define MAX_LUT_TEMP 0x7F  ///<  7-bit

#define EMC2101_I2C_ADDR 0x4C ///< The default I2C address
#define EMC2101_FAN_RPM_NUMERATOR 5400000               ///< Conversion unit to convert LSBs to fan RPM
#define _TEMP_LSB 0.125 ///< single bit value for internal temperature readings

/**
 * @brief
 *
 * Allowed values for `setDataRate`.
 */
typedef enum {
  EMC2101_RATE_1_16_HZ, ///< 1_16_HZ
  EMC2101_RATE_1_8_HZ,  ///< 1_8_HZ
  EMC2101_RATE_1_4_HZ,  ///< 1_4_HZ
  EMC2101_RATE_1_2_HZ,  ///< 1_2_HZ
  EMC2101_RATE_1_HZ,    ///< 1_HZ
  EMC2101_RATE_2_HZ,    ///< 2_HZ
  EMC2101_RATE_4_HZ,    ///< 4_HZ
  EMC2101_RATE_8_HZ,    ///< 8_HZ
  EMC2101_RATE_16_HZ,   ///< 16_HZ
  EMC2101_RATE_32_HZ,   ///< 32_HZ
} emc2101_rate_t;

void EMC2101_set_fan_speed(float);
//void EMC2101_read(void);
uint16_t EMC2101_get_fan_speed(void);
void EMC2101_init(void);
float EMC2101_get_chip_temp(void);

#endif /* EMC2101_H_ */