2021-01-05 15:48:07,095 - Changing monitoring state from "Offline" to "Detecting serial connection" 2021-01-05 15:48:07,109 - Performing autodetection with 7 port/baudrate candidates: /dev/ttyAMA0@115200, /dev/ttyAMA0@250000, /dev/ttyAMA0@230400, /dev/ttyAMA0@57600, /dev/ttyAMA0@38400, /dev/ttyAMA0@19200, /dev/ttyAMA0@9600 2021-01-05 15:48:07,110 - Trying port /dev/ttyAMA0, baudrate 115200 2021-01-05 15:48:07,121 - Connecting to port /dev/ttyAMA0, baudrate 115200 2021-01-05 15:48:07,137 - Handshake attempt #1 with timeout 2.0s 2021-01-05 15:48:08,147 - Could not write anything to the serial port in 5 tries, something appears to be wrong with the printer communication 2021-01-05 15:48:08,151 - Changing monitoring state from "Detecting serial connection" to "Offline (Error: Could not write to serial port)" 2021-01-05 15:48:08,158 - Closing down send loop 2021-01-05 15:48:46,054 - Changing monitoring state from "Offline" to "Detecting serial connection" 2021-01-05 15:48:46,080 - Performing autodetection with 7 port/baudrate candidates: /dev/ttyAMA0@115200, /dev/ttyAMA0@250000, /dev/ttyAMA0@230400, /dev/ttyAMA0@57600, /dev/ttyAMA0@38400, /dev/ttyAMA0@19200, /dev/ttyAMA0@9600 2021-01-05 15:48:46,082 - Trying port /dev/ttyAMA0, baudrate 115200 2021-01-05 15:48:46,087 - Connecting to port /dev/ttyAMA0, baudrate 115200 2021-01-05 15:48:46,104 - Handshake attempt #1 with timeout 2.0s 2021-01-05 15:48:47,152 - Could not write anything to the serial port in 5 tries, something appears to be wrong with the printer communication 2021-01-05 15:48:47,159 - Changing monitoring state from "Detecting serial connection" to "Offline (Error: Could not write to serial port)" 2021-01-05 15:48:47,169 - Closing down send loop