Debugging ShellΒΆ
The system provides a serial debugging shell on the RX/TX pins in the debugging connector. The serial configuration is 8N1 at 115200 baud, and the console requires an Enter
key press to be activated.
For Linux systems, Satlab recommends the tio
serial terminal application (https://tio.github.io/) but other applications such as minicom
should also work. When using the Satlab JTAG/serial adapter, the debug shell is typically available on /dev/ttyUSB1
.
A number of timestamped log messages are printed during boot from various logging groups. Additional logging can be enabled at runtime using the trace
commands. The help
command can be used to list available commands and their usage. The installed software version and build information is also printed in the debugging shell during boot.
satlab@satlab:~$ tio -b 115200 /dev/ttyUSB1
[tio 14:29:41] tio v1.28
[tio 14:29:41] Press ctrl-t q to quit
[tio 14:29:41] Connected
[ 0.000664] prop: using stored sys properties
[ 0.000869] system: Copyright (c) 2016-2019 Satlab ApS <satlab@satlab.com>
[ 0.002031] system: boot: 1 reset cause: general reset
[ 0.002471] system: board serial #21123456
Satlab Polaris ADS-B v1.0.0 (builder@builder) Jun 1 2019 12:00:00
[polaris] help
Available commands:
boot Bootloader commands
csp CSP commands
demod Demod commands
fs File system commands
help Show available commands
history Show previous commands
prop System configuration properties
reboot Reboot system
store Frame store commands
time Time command execution
tm Telemetry commands
trace Trace subcommands
uptime Show system uptime
watch Run command periodically
To show current telemetry values, run the tm show
command. The watch
command can be used to periodically run a command, with the -b
switch enabling screen blanking between updates. Press any key to stop the loop:
[polaris] watch -b tm show
Running command 'tm show' every 1000 ms
Power Channels
FPGA On
RF On
SD-card Off
Ethernet Off
Power Rails
VIN 4925.00 mV 296.00 mA 1442.00 mW
3V3 3336.00 mV 412.00 mA 1375.00 mW
2V0 2000.00 mV 214.00 mA 430.00 mW
1V0 958.00 mV 149.00 mA 141.00 mW
Temperature Sensors
MCU 38.00 C
FPGA core 41.25 C
Power 37.43 C
LNA 37.75 C
ADC 37.75 C
SD-card 37.25 C
Interrupted
To list the last 5 received messages, the store read
command can be used:
[polaris] store read 5
7826: T: 203.303338650 R: -28.1 dBFS F: .. DF 17 8d45aa4b990072a8a050003dd1fd
7825: T: 203.302914850 R: -26.8 dBFS F: .. DF 17 8d45aa4b90832406abd5bce348c5
7824: T: 203.276235450 R: -25.6 dBFS F: .. DF 17 8d45b8b799119d2a30082103d4e4
7838: T: 203.442283000 R: -28.9 dBFS F: .. DF 17 8f43e9d75cc7f08b7fcbba2d7e7f
7837: T: 203.417461600 R: -29.0 dBFS F: .. DF 17 8d4cabbd60b5040aabd3ed6a817e
7836: T: 203.413607550 R: -20.5 dBFS F: .. DF 17 8d4ba9cc9945712828041491e699
Dynamic debugging messages can be enabled through the trace
command group. This can for example be used to log all received and transmitted CSP messages. To do so, run trace mask csp all
:
[polaris] trace mask csp all
[ 55.551903] csp: INP: S 1, D 23, Dp 1, Sp 62, Pr 2, Fl 0x00, Sz 1 VIA: KISS
[ 55.552103] csp: SERVICE: Ping received
[ 55.552210] csp: OUT: S 23, D 1, Dp 62, Sp 1, Pr 2, Fl 0x00, Sz 1 VIA: KISS
Logging of all incoming ADS-B messages can also be enabled with trace mask demod info
.