//Read an Single ADC Channel of the ADS1115
uint16_t ADS1115_readADCSingle(uint8_t channel) {
	if(channel > 3) {
		return 0;
	}
	
	uint16_t config = ADS1015_REG_CONFIG_CQUE_NONE |
	ADS1015_REG_CONFIG_CLAT_NONLAT |
	ADS1015_REG_CONFIG_CPOL_ACTVLOW |
	ADS1015_REG_CONFIG_CMODE_TRAD |
	ADS1015_REG_CONFIG_DR_128SPS |
	ADS1015_REG_CONFIG_MODE_SINGLE;
	config |= ADS1015_REG_CONFIG_PGA_4_096V;
	
	

	switch(channel) {
		case 0:
			config |= ADS1015_REG_CONFIG_MUX_SINGLE_0;
			break;
		case 1:
			config |= ADS1015_REG_CONFIG_MUX_SINGLE_1;
			break;
		case 2:
			config |= ADS1015_REG_CONFIG_MUX_SINGLE_2;
			break;
		case 3:
			config |= ADS1015_REG_CONFIG_MUX_SINGLE_3;
			break;
	}

	
	config |= ADS1015_REG_CONFIG_OS_SINGLE;		//<--- Diese Option wird zu -32768

	
	writeRegister(ADSaddress, ADS1015_REG_POINTER_CONFIG, config/*49923*/);
	
	_delay_ms(ADS1115_CONVERSIONDELAY);
	
	return readRegister(ADSaddress, ADS1015_REG_POINTER_CONVERT) >> bitShift;
}