* 0x06 Distance forward LSB
* 0x07 Distance backward MSB
* 0x08 Distance backward LSB
+ * 0x15 Distance forward MSB (read only)
+ * 0x16 Distance forward LSB (read only)
+ * 0x17 Distance backward MSB (read only)
+ * 0x18 Distance backward LSB (read only)
* 0x09 Voltage MSB
* 0x0A Voltage LSB
*
TWDR = tmp16;
TWI_ACK;
break;
+ case 0x15: // Distance forward MSB
+ tmp16 = dist_forward;
+ TWDR = tmp16>>8;
+ TWI_ACK;
+ break;
+ case 0x16: // Distance forward LSB
+ TWDR = tmp16;
+ TWI_ACK;
+ break;
+ case 0x17: // Distance backward MSB
+ tmp16 = dist_backward;
+ TWDR = tmp16>>8;
+ TWI_ACK;
+ break;
+ case 0x18: // Distance backward LSB
+ TWDR = tmp16;
+ TWI_ACK;
+ break;
case 0x09: // Voltage MSB
tmp16 = voltage;
TWDR = tmp16>>8;