_C='big'
_B=False
_A=None
from PiicoDev_Unified import *
compat_str='\nUnified PiicoDev library out of date.  Get the latest module: https://piico.dev/unified \n'
class PiicoDev_MS5637:
	_I2C_ADDRESS=118;_SOFTRESET=30;_MS5637_START_PRESSURE_ADC_CONVERSION=64;_MS5637_START_TEMPERATURE_ADC_CONVERSION=80;_MS5637_CONVERSION_OSR_MASK=15;_ADC_READ=0;_MS5637_PROM_ADDR_0=160;_MS5637_PROM_ADDR_1=162;_MS5637_PROM_ADDR_2=164;_MS5637_PROM_ADDR_3=166;_MS5637_PROM_ADDR_4=168;_MS5637_PROM_ADDR_5=170;_MS5637_PROM_ADDR_6=172;_MS5637_CONV_TIME_OSR_256=1;_MS5637_CONV_TIME_OSR_512=2;_MS5637_CONV_TIME_OSR_1024=3;_MS5637_CONV_TIME_OSR_2048=5;_MS5637_CONV_TIME_OSR_4096=9;_MS5637_CONV_TIME_OSR_8192=17;_RESOLUTION_OSR_256=0;_RESOLUTION_OSR_512=1;_RESOLUTION_OSR_1024=2;_RESOLUTION_OSR_2048=3;_RESOLUTION_OSR_4096=4;_RESOLUTION_OSR_8192=5;_MS5637_CRC_INDEX=0;_MS5637_PRESSURE_SENSITIVITY_INDEX=1;_MS5637_PRESSURE_OFFSET_INDEX=2;_MS5637_TEMP_COEFF_OF_PRESSURE_SENSITIVITY_INDEX=3;_MS5637_TEMP_COEFF_OF_PRESSURE_OFFSET_INDEX=4;_MS5637_REFERENCE_TEMPERATURE_INDEX=5;_MS5637_TEMP_COEFF_OF_TEMPERATURE_INDEX=6;eeprom_coeff=[0,0,0,0,0,0,0,0];coeff_valid=_B
	def __init__(self,bus=_A,freq=_A,sda=_A,scl=_A,addr=_I2C_ADDRESS):
		try:
			if compat_ind>=1:0
			else:print(compat_str)
		except:print(compat_str)
		self.i2c=create_unified_i2c(bus=bus,freq=freq,sda=sda,scl=scl);self.addr=addr;self.i2c.write8(self.addr,_A,bytes([self._SOFTRESET]));sleep_ms(15)
	def set_resolution(self,res):time=[self._MS5637_CONV_TIME_OSR_256,self._MS5637_CONV_TIME_OSR_512,self._MS5637_CONV_TIME_OSR_1024,self._MS5637_CONV_TIME_OSR_2048,self._MS5637_CONV_TIME_OSR_4096,self._MS5637_CONV_TIME_OSR_8192];cmd_temp=res*2;cmd_temp|=self._MS5637_START_TEMPERATURE_ADC_CONVERSION;_time_temp=time[int((cmd_temp&self._MS5637_CONVERSION_OSR_MASK)/2)];cmd_pressure=res*2;cmd_pressure|=self._MS5637_START_PRESSURE_ADC_CONVERSION;_time_pressure=time[int((cmd_pressure&self._MS5637_CONVERSION_OSR_MASK)/2)];return cmd_temp,cmd_pressure,_time_temp,_time_pressure
	def read_eeprom_coeff(self,cmd):data=self.i2c.readfrom_mem(self.addr,cmd,2);return int.from_bytes(data,_C)
	def read_eeprom(self):
		a=0;coeffs=[0,0,0,0,0,0,0,0];liste=[self._MS5637_PROM_ADDR_0,self._MS5637_PROM_ADDR_1,self._MS5637_PROM_ADDR_2,self._MS5637_PROM_ADDR_3,self._MS5637_PROM_ADDR_4,self._MS5637_PROM_ADDR_5,self._MS5637_PROM_ADDR_6]
		for i in liste:coeffs[a]=self.read_eeprom_coeff(i);a=a+1
		self.coeff_valid=True;return coeffs
	def conversion_read_adc(self,cmd,_time):self.i2c.write8(self.addr,_A,bytes([cmd]));sleep_ms(_time);data=self.i2c.readfrom_mem(self.addr,self._ADC_READ,3);adc=int.from_bytes(data,_C);return adc
	def read_temperature_and_pressure(self,res=_RESOLUTION_OSR_8192):
		A='NaN'
		if self.coeff_valid==_B:self.eeprom_coeff=self.read_eeprom()
		cmd_temp,cmd_pressure,_time_temp,_time_pressure=self.set_resolution(res)
		try:adc_temperature=self.conversion_read_adc(cmd_temp,_time_temp);adc_pressure=self.conversion_read_adc(cmd_pressure,_time_pressure)
		except:print(i2c_err_str.format(self.addr));return float(A),float(A)
		if type(adc_temperature)is not int or type(adc_pressure)is not int:return float(A),float(A)
		dT=adc_temperature-self.eeprom_coeff[self._MS5637_REFERENCE_TEMPERATURE_INDEX]*256;TEMP=2000+(dT*self.eeprom_coeff[self._MS5637_TEMP_COEFF_OF_TEMPERATURE_INDEX]>>23)
		if TEMP<2000:
			T2=3*(dT*dT)>>33;OFF2=61*(TEMP-2000)*(TEMP-2000)/16;SENS2=29*(TEMP-2000)*(TEMP-2000)/16
			if TEMP<-1500:OFF2+=17*(TEMP+1500)*(TEMP+1500);SENS2+=9*((TEMP+1500)*(TEMP+1500))
		else:T2=5*(dT*dT)>>38;OFF2=0;SENS2=0
		OFF=(self.eeprom_coeff[self._MS5637_PRESSURE_OFFSET_INDEX]<<17)+(self.eeprom_coeff[self._MS5637_TEMP_COEFF_OF_PRESSURE_OFFSET_INDEX]*dT>>6);OFF-=OFF2;SENS=self.eeprom_coeff[self._MS5637_PRESSURE_SENSITIVITY_INDEX]*65536+(self.eeprom_coeff[self._MS5637_TEMP_COEFF_OF_PRESSURE_SENSITIVITY_INDEX]*dT>>7);SENS-=SENS2;P=(int(adc_pressure*SENS)>>21)-int(OFF)>>15;temperature=(TEMP-T2)/100.0;pressure=P/100.0;return temperature,pressure
	def read_pressure(self,res=_RESOLUTION_OSR_8192):temperature_and_pressure=self.read_temperature_and_pressure(res);return temperature_and_pressure[1]
	def read_altitude(self,pressure_sea_level=1013.25):pressure=self.read_pressure();return 44330*(1-(float(pressure)/pressure_sea_level)**(1/5.255))
	def close(self):self.i2c.close()
	def __enter__(self):return self
	def __exit__(self,type,value,traceback):self.close()