text: // Copyright (c) 2017, Tobias Mueller tm(at)tm3d.de
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  //  * Redistributions of source code must retain the above copyright
  //    notice, this list of conditions and the following disclaimer.
  //  * Redistributions in binary form must reproduce the above copyright
  //    notice, this list of conditions and the following disclaimer in the
  //    documentation and/or other materials provided with the
  //    distribution.
  //  * All advertising materials mentioning features or use of this
  //    software must display the following acknowledgement: This product
  //    includes software developed by tm3d.de and its contributors.
  //  * Neither the name of tm3d.de nor the names of its contributors may
  //    be used to endorse or promote products derived from this software
  //    without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  #define F_CPU 8000000UL
  #include <avr/io.h>
  
  #include <util/delay.h>
  
  
  #include "USI_TWI_Master.h"
  #include "IAQCORE.h"
  
  
  uint8_t readIAQCORE(IAQCORE_Data_t *d) {
  	uint8_t *da=(uint8_t*)d;
  	I2c_StartCondition();
  	I2c_WriteByte(0b10110101);
  	da[1]=I2c_ReadByte(ACK);
  	da[0]=I2c_ReadByte(ACK);
  	da[2]=I2c_ReadByte(ACK);
  	da[6]=I2c_ReadByte(ACK);
  	da[5]=I2c_ReadByte(ACK);
  	da[4]=I2c_ReadByte(ACK);
  	da[3]=I2c_ReadByte(ACK);
  	da[8]=I2c_ReadByte(ACK);
  	da[7]=I2c_ReadByte(NO_ACK);
  	I2c_StopCondition();
  	return 0;
  }
  