AutoPi crashed during long drive. Write failed: Input/output error.
During a long drive my AutoPi crashed. I did nothing with the device at the moment. I heard the voice feedback from the AutoPi but could not hear what it said due to noise.
I only discovered it had crashed when I had to manually restart it the day after by pulling the OBDII connector and reattaching it. After this, the device uploaded the following Events to the cloud which explains why my Trip was cut short:
|December 8th 2021, 20:31:14||system/power/3v3||restarted||reason: qmi_device_missing|
|December 8th 2021, 20:28:47||system/network/wwan0||offline||reason: QMI device not found ‘/dev/cdc-wdm0’|
|December 8th 2021, 20:27:55||system/minion||offline|
|December 8th 2021, 20:27:05||system/kernel||error||timestamp: '2021-12-08T19:26:35,840604+0000’
message: 'usb usb1-port1: Cannot enable. Maybe the USB cable is bad?'
|December 8th 2021, 20:27:05||error||timestamp: '2021-12-08T19:26:34,290710+0000’
message: 'usb usb1-port1: disabled by hub (EMI?), re-enabling…'
|December 8th 2021, 20:26:43||unknown||reason: >- [Errno 2] could not open port /dev/ttyQCT02: [Errno 2] No such file or directory: ‘/dev/ttyQCT02’|
|December 8th 2021, 20:26:36||vehicle/position||unknown||reason: ‘write failed: [Errno 5] Input/output error’|
|December 8th 2021, 20:22:28||vehicle/position||moving|
|December 8th 2021, 20:22:23||vehicle/position||unknown||reason: no_fix|
1: What does the above mean? I understand it lost contact with a device, but which device? The modem?
2: Why did that happen?
3: What can I do to prevent it from happening again?
vl_wake: ’ >13.00V FOR 5 s’
vchg_wake: ’ +0.40V IN 1000 ms’
uart_sleep: ’ 900 s’
vl_sleep: ’ <12.10V FOR 240 s’
ext_sleep: ’ LOW FOR 3000 ms’
ext_wake: ’ HIGH FOR 500 ms’