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QUESTION
I'm working with a CyberPower PDU: https://www.cyberpowersystems.com/product/pdu/switched-ats/pdu15swhviec12atnet/
According to snmpwalk -v1 -m CyberPower_MIB_v2.9.MIB -c public 10.42.0.2 iso.3.6.1.4.1.3808
, the management card model is RMCARD205
and the full model name is PDU15SWHVIEC12ATNET
.
I would like to programmatically control the power to the ports, doing this via SNMP seems the most robust option. I can query the status of port 3 (say) with,
...ANSWER
Answered 2021-Jun-10 at 13:12I found the answer to my question and will post some details here, in case others are as confused as I was!
The first tip is to use the device manufacturers MIB files. CyberPower published a single MIB file (which is basically a textual description of all the properties in the hardware devices) that allows the net-snmp tools to print descriptive names for the otherwise opaque OIDs. For example, to see what I was attempting to set above, after downloading the MIB file into the current working directory,
QUESTION
I am checking the ‘IPdu Mapping’ in AUTOSAR_TPS_SystemTemplate.pdf, IPduMapping in Arxml will be I-PDU-MAPPING,targetIPdu will be TARGET-I-PDU, is there any rules on the name?
Any AUTOSAR document mention this naming convention?
...ANSWER
Answered 2021-May-11 at 16:36You will find the answer to your question in chapter 3.6 (named "XML Names") of the AUTOSAR standard document "TPS SchemaProductionRules".
In short, capital letters in the name of a meta-model element (like IPduMapping
) trigger the existence of a "-" in the XML name in the schema (translating it to I-PDU-MAPPING
). XML names in the AUTOSAR schema are all-uppercase by convention. There are further rules for numerals, as described in the quoted chapter.
QUESTION
I have a dataset where we have derived responses (FINAL_RESP
) at various timepoints across 2 different readers (READER
) for each subject (SUBJ_ID
). I want to compare the output and want to pivot_wider
but my brain is struggling at the moment.
My current dataset (first 2 subjects):
...ANSWER
Answered 2021-May-04 at 16:56Code:
QUESTION
TL;DR: One ESP32 broadcasts via BLE (already working), another ESP32 listens. I am unable to parse the received advertisements correctly, i.e. can't extract the manufacturer specific data!
Goal: One ESP32 (call A) broadcasts an advertisement containing manufacturer specific data (MSD), which is received by another ESP32 (call B) who prints that data to the console.
I am using the new RISC-V based ESP32C3 which supports Bluetooth 5.0, though everything I do is based on Bluetooth 4.2.
Where I am:
- A can broadcast a valid advertisement (checked with an Ubertooth/Wireshark)
- B receives something from A, though the packet only very loosely corresponds to the (correct) packet received by the Ubertooth.
Code:
Structs used to set up A:
...ANSWER
Answered 2021-Apr-17 at 16:45EIR was introduced a long time ago and was present in Bluetooth 4.0.
You should use %02X
when printing hex strings since that will include leading zeros.
ble_adv
contains only the EIR content, not the whole packet.
EIR uses length, type, value encoding. Your manufacturing data is encoded like this:
4 (length) 0xff (manufacturer data) Hey (content)
Note that the two bytes of the manufacturer data content should be a Bluetooth SIG registered company id.
QUESTION
Any items in a list where the name of an item (in the brackets) has <=2 character, the description is put on the same line as the name. I'm looking for a way to make it so all of the descriptions are all indented on the next line, thanks.
...ANSWER
Answered 2021-Apr-14 at 08:21There are a couple of options. For example: Format the item yourself with a new command. Then you can decide the spacing yourself.
QUESTION
I have implemented a localization algorithm with 4 nodes topology and it is working fine but in the log file I am getting this error and I am not able to understand where the problem is. The algorithm gets stuck for sometime and this error appears and after that it again resumes the normal flow.how to remove this error ?
...ANSWER
Answered 2021-Apr-01 at 17:06I ran your simulation using the code you provided and managed to reproduce the error. Tracing through the logs, I found that the error occurred on the third motion update for node B, whereas your simulation script only seemed to have 2 legs in the motion model. That gave me a hint as to what the problem was.
Your motion model states:
QUESTION
Reprex:
...ANSWER
Answered 2021-Mar-25 at 15:06Building off of @akrun code, here is the solution that I used:
QUESTION
I'm using the cmake crate to compile a CMake project which depends and compiles other CMake projects
This is my build.rs
:
ANSWER
Answered 2021-Mar-05 at 01:09On the CMakeLists.txt, I was doing:
QUESTION
Actually I have a sample SNMP trap receiver code. But its like a UDP socket is established and it listens for the trap. I am testing the code manually by generating the trap with the help of an exe. But now I have to subscribe for the snmp client (printer) from which I need to receive the Trap. Could anyone please help me to write a subscription code to subscribe for the printer from the listener code.
snmptraplistener code:
...ANSWER
Answered 2021-Mar-18 at 14:51In general, what you asked is not a programming question, because your trap listener can only monitor UDP/SNMP packets at port 162 and there is no way for it to subscribe to anything.
It would be the responsibilities of the printer administrators to configure the SNMP agent on that printer to send traps to your listener (IP/port).
QUESTION
I was wondering what did the Unetstack agent
expect as a response to a TCP connection
which is established to the modem at ip:port ?
I was trying to connect to the the modem using the TCP connection
through the GNURadio pdu socket. The connection was established but i think after handshaking, it was automatically terminated. Did it expect something ?I am planning to send custom messages to modem using this APIs.
Here is what i have done so far.
- I opened a
TCP connection
usingSocket PDU
block using below flow graph.
- I used unet audio SDOAM to test:
ANSWER
Answered 2021-Mar-12 at 03:13The JSON protocol used by UnetStack is from fjåge. The full specification of the protocol can be found here: https://fjage.readthedocs.io/en/latest/protocol.html
The protocol expects an acknowledgement to the {"alive": true}
JSON message within a short timeout (5 seconds). If it receives no acknowledgement, it will close the connection, assuming that the connecting party is not responsive. The correct acknowledgement is a {"alive": true}
sent back to confirm that the connection is indeed alive.
The above handshake is designed to cater for other transports such as RS232 where a disconnection can only be detected by communicating over the connection.
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