Overview
For see the logs from the device, CanAirIO have logs output via USB serial connection. For connected to it, please follow the next steps:
From CanAirIO Web installer
CanAirIO Web installer has this functionality, you only should choose your board (install button), select your USB, and press the button LOGS like this:
Increased verbose output
For try to have more logs and more information of your CanAirIO device, please enable the debug mode in your CanAirIO App, in ->settings->mobile station->enable debug mode switch. Also you can enable it using CanAirIO CLI with the command debug 1.
From any Linux shell
Run picocom -b 115200 /dev/ttyUSB0 and then press the reset button of your ESP32 board, you should have something like this:
Output sample
19:05:08.081 > == CanAirIO Setup ==
19:05:08.083 >
19:05:08.541 > -->[OGUI] display config ready.
19:05:08.836 > -->[INFO] ESP32MAC: 24:0A:C4:06:F5:C6
19:05:08.841 > -->[INFO] Hostname: CanAirIO5C6
19:05:08.843 > -->[INFO] Revision: r877
19:05:08.846 > -->[INFO] Firmware: 0.5.0
19:05:08.848 > -->[INFO] Flavor : WEMOSOLED
19:05:08.851 > -->[INFO] Target : prod
19:05:08.853 > -->[INFO] Detecting sensors:
19:05:08.856 > -->[INFO] Sensorslib version : 0.4.2
19:05:08.859 > -->[INFO] enable sensor GPIO : 27
19:05:08.862 > -->[INFO] config UART sensor : 0
19:05:09.101 > -->[SLIB] new sample time : 1
19:05:09.104 > -->[SLIB] temperature offset : 0.00
19:05:09.107 > -->[SLIB] altitude offset : 0.00
19:05:09.110 > -->[SLIB] only i2c sensors : 1
19:05:09.650 > -->[INFO] Detection sensors FAIL!
19:05:09.898 > -->[WDOG] watchdog config to check each 120 seconds.
19:05:09.903 > -->[INFO] InfluxDb : disabled
19:05:09.906 > -->[INFO] WiFi : disabled
19:05:11.128 > -->[BTLE] GATT server ready. (Waiting for client)
19:05:16.214 > -->[SLIB] new sample time : 5
19:05:16.255 > -->[WIFI] started PAX counter sniffer ;)
For example in this output you don’t have any sensor connected but the PAX Counter was enable
Advanced
For increase more the verbose output and have the output from the internals of the ESP32 core, you need rebuild the firmware with the CORE_DEBUG_LEVEL in 4 for example. You can change it in the platformio.ini file in the source code.