Fix TWI driver not aborting when faced with no response after attempting to address a device on the bus.

LUFA/Drivers/Peripheral/TWI.c

@@ -66,8 +66,8 @@ bool TWI_StartTransmission(uint8_t SlaveAddress, uint8_t TimeoutMS)
 			case TW_MR_SLA_ACK:
 				return true;
 			default:
-				TWI_StopTransmission();
+				TWCR = ((1 << TWINT) | (1 << TWSTO) | (1 << TWEN));
-				break;
+				return false;
 		}
 	}
 }

LUFA/ManPages/ChangeLog.txt

@@ -20,6 +20,7 @@
   *  <b>Fixed:</b>
   *  - Fixed software PDI/TPI programming mode in the AVRISP project not correctly toggling just the clock pin
   *  - Fixed TWI_StartTransmission() corrupting the contents of the GPIOR0 register
+  *  - Fix TWI driver not aborting when faced with no response after attempting to address a device on the bus
   *
   *  \section Sec_ChangeLog100219 Version 100219
   *