misc avr fixes

[ros_wild_thumper.git] / avr / motor_ctrl / main.c

diff --git a/avr/motor_ctrl/main.c b/avr/motor_ctrl/main.c
index d751375d0f8138fa69896cf8c514341625b9ef27..ec9965f68800c26812a9eadf04da5e67dd3cec81 100644 (file)
--- a/avr/motor_ctrl/main.c
+++ b/avr/motor_ctrl/main.c
@@ -382,7 +382,7 @@ ISR(TWI_vect)
                                default:
                                        TWI_NAK;
                        }
-                       ireg++;
+                       if (ireg < 0xff) ireg++;
                        break;
                case TW_ST_SLA_ACK: // start read
                case TW_ST_DATA_ACK: // read