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K-MD2 Datasheet(PDF) 14 Page - RFbeam Microwave GmbH |
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K-MD2 Datasheet(HTML) 14 Page - RFbeam Microwave GmbH |
14 / 23 page © RFbeam Microwave GmbH | Schuppisstrasse 7 | CH-9016 St. Gallen | www.rfbeam.ch | K-MD2 Engineering Sample | data sheet 07/2018 – Revision A | Page 14/23 File System Changing anything on the file system can result in an irreparable state where the radar has to be reprogrammed by RFbeam Microwave GmbH. File Description /etc/init.d/rcS This file is always run, but will refer to /mnt/rcS if it exists. /mnt/rcS (optional) This file is run instead of /etc/init.d/rcS /opt/init.sh This is the default start-up script that starts the sensor server /mnt/init.sh (optional) This file is run instead of /opt/init.sh /opt/sensor_server This is the executable. It reads the configuration file(s). /opt/sensor_server.conf This is the default configuration file for the sensor server. /mnt/sensor_server.conf This is the user configuration file. Any entries override those in the default configuration file. /opt/sensor_server.log This is the default output log file. /opt/roms_* Files in this folder are loaded on to the processor. /opt/versions This file shows the software and firmware versions that were used to create the boot image. /etc/fstab This file defines the mount points, including /mnt /tmp This is a ram disk, used for updating the firmware. Table 5: Radar file system Configuration The sensor server configuration is loaded from files containing key/value pairs. The key and value must be separated by an equals sign: key = value The default configuration file /opt/sensor_ser- ver.conf is always loaded. If the user configuration file /mnt/sensor_server.conf exists, it is loaded as second and any values overwrite the value loaded from the default configuration file. The following table describes the system parameter which can be changed by the user in the /mnt/sen- sor_server.conf. Key Description log_level_file The level for messages in the log file. log_level_stdout The level for messages displayed on the terminal. log_filename The name and location of the log file. datasink_timeout Maximum time to allow for receiving commands. datasink_filter The types of message sent by the sensor server. datasink_port The network TCP port. serial_device The serial interface. serial_baud The serial interface baud rate. serial_max_length The maximum length of messages sent via the serial interface. chirp_setup_time Clocks from PLL trigger to ADC sample. chirp_hold_time Clocks from ADC sample to PLL trigger. chirp_num_sweeps Number of sweeps in the FMCW modulation scheme. chirp_num_repeats Number of times the sweeps are repeated. chirp_num_repeats_ignored Number of repeats where the ADC samples are not stored. chirp_num_steps Number of steps in each FMCW sweep. chirp_num_steps_ignored Number of steps in the first sweep where the ADC sample is not stored. chirp_initial_delay Number of clocks between the first PLL trigger and the first ADC sample. chirp_start The initial frequency of the FMCW sweep. chirp_bandwidth The bandwidth of the FMCW sweep. radar_rx_gain The receiver VGA gain in dB Table 6: System parameter System parameter which aren’t described in this table are system dependent and must not be changed. Changing of these parameter can result in an irreparable state where the radar has to be reprogrammed by RFbeam Microwave GmbH. |
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