Warnings

Details about the detection and handling of warnings on the microDRIVE units.
The microDRIVE 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
Bit meaning of the Warning 1 field logged internally on microDRIVE 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
Currently unused, reserved for future use.
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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.

Errors

Troubleshooting