--- title: Warnings slug: legacy-doc-gk2/warnings icon: ⚠️ createdAt: 2024-01-15T00:51:40.316Z --- Details about the detection and handling of warnings on the micro**DRIVE** units. The micro**DRIVE **units datalog two separate warning sectors. The two bitfields and the details of each entry can be found below. The bits are set when the described event occurs. ## Warning 1 :::hint{type="info"} Bit meaning of the Warning 1 field logged internally on micro**DRIVE** units. ::: | **Warning Bit** | **Name** | **Description** | | --------------- | -------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | 0 | Motor Started | Motor is running. | | 1 | Motor Saturated | The ESC detected a motor saturation and started reducing the output drive (foldback) for a period of time. | | 2 | ESC Over Temperature Limit | The temperature on the ESC exceeded the configured temperature limit. | | 3 | Bus Over Voltage Config Limit | The bus voltage crossed over the configured voltage limit. | | 4 | Bus Under Voltage Config Limit | The bus voltage crossed under the configured voltage limit. | | 5 | Bridge Tests Failed | The start-up bridge tests failed, indicating a hardware failure or motor short. The unit should be inspected or replaced. | | 6 | Bus Over Voltage Absolute Limit | The bus voltage crossed above the absolute limits of the hardware, resulting in a hard shutdown. | | 7 | Bus Under Voltage Absolute Limit | The bus voltage crossed below the absolute limits of the hardware, resulting in a hard shutdown. | | 8 | Bus Voltage Maximum Ripple | The unit requires extra capacitors on the bus or repairs if in service for some time (capacitors worn out). | | 9 | Firmware Updated | The firmware was successfully updated within the last boot-up of the unit. | | 10 | Firmware Corrupt | An error in the firmware section was detected last boot and successfully repaired. Indicates possible firmware update failure, or less likely, a memory fault. | | 11 | Back-up Corrupt | An error in the back-up/recovery section was detected last boot and successfully repaired. Indicates possible firmware update failure, or less likely, a memory fault. | | 12 | CAN Bus Off Occurred | A bus-off error was reported from the CAN system. It may indicate a hardware fault is present. | | 13 | Motor Sense Error | The motor temperature sensor has experienced an error, typically indicating a hardware fault. | | 14 | AFW Engaged | AFW is currently engaged. No warning action is necessary. Useful for debugging purposes. | | 15 | Not Using Calibration | Factory calibrated values are currently not in use, measurements will have an error. | | 16 | Watchdog Fired | Hardware watchdog has been fired and the unit has reboot. Serious fault, contact Hargrave. | | 17 | CAN Out of Memory | The CAN handler has run out of memory. The bus could be overloaded/not responding. | | 18 | Motor Parked | Motor is parked when using prop parking. | ## Warning 2 :::hint{type="info"} Currently unused, reserved for future use. :::