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Questions tagged [contiki-process]

Use this tag with questions concerning the use of Processes and Threads along with Events when using the Contiki OS. This tag should be used with the [contiki] tag to indicate that the question is specifically about the multi-threading library of the Contiki OS and how to use Threads, Events, Timers, etc.

28 questions
3
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1 answer

get the position of node using cooja contiki

I want to get the position (x and y coordinates) of each node in the Cooja simulator. There are 30 nodes in total, of type 'sky mote'. The goal is to build a table consisting of (ID_node x_coordinate y_coordinate) for each node. First I tried to get…
amany
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3
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1 answer

How to start multiple Processes in Contiki to create load on CPU

How can I start multiple processes in parallel to create a congestion in CPU usage? Below is the code I was trying:- #include "contiki.h" #include PROCESS(cpu_load_process_1, "CPU Loading Process 1"); PROCESS(cpu_load_process_2, "CPU…
ashish mishra
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2
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0 answers

Connect two native Contiki NG motes over SLIP

Since the RPL border router example works as either a Cooja mote or a native mote, I thought using the SLIP code in /services/rpl-border-router/native might work. I made a copy of hello-world. I edited hello-world.c to read #include…
btgwynn
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2
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1 answer

Start Contiki process from a process

I am using contikiOS and C, I am trying to create code that will wait for 10s then print the temperature. It will then start a different process and record temp every 1s. It will check when temperature exceeds 28c and turn led on. Currently, it…
Mathew Slingsby
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2
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1 answer

Call process from process in Contiki

In my code, I need to declare two process. In the first process, I want to call the second one like this: PROCESS_THREAD(Initialization_process, ev, data) { PROCESS_BEGIN(); PROCESS_THREAD(example_broadcast_process, ev, data); …
Joe
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2
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1 answer

How to post two different events to the same Contiki process?

I have two Contiki processes with one process, master, posting two different events to a second process, send. The first event sent is PROCESS_EVENT_CONTINUE and the second event is PROCESS_EVENT_MSG. I am posting these events sequentially, one…
Sgio Dz
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2
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2 answers

What does 'Yield' means in Contiki rtos

I am working with contiki and trying to understand the terminology used in it. I am observing certain words such as yield, stackless here and there on internet. Some examples PROCESS_EVENT_CONTINUE : This event is sent by the kernel to a process…
Mlo Bootloader
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1
vote
0 answers

Using an Openmote-B ADC

I'm working on signal acquisition and transmission using Openmote-B. I have an analogue signal from a sensor, that is to be transmitted using an openmote. Is it possible to directly feed the analog data to the Openmote? How can I use the inbuild ADC…
jishnu k
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1
vote
0 answers

How to share data between nodes

I have created a network with one sink & five sender nodes. I wanted to share one single data (an integer value) with all the nodes. I wanted the nodes to be able to update as well as read the shared integer value. I used a pointer and tried to…
Ron Nen
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1
vote
1 answer

How to run parallel processes in Contiki

I want to create two processes that should be executed parallelly. I am trying with following code: PROCESS(hello_world_process, "Hello world process"); PROCESS(hello_world_process2, "Hello world…
SUBHANSHU SAHU
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1
vote
1 answer

Failing attempt to use thread and timer to send two different messages with UDP

I want to send two different type of messages from server to client. I have created two functions data_signal() and probe_signal() for each of these two different messages. The data_signal() function will periodically send a defined message with an…
SUBHANSHU SAHU
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1
vote
0 answers

Contiki BR not executing tcp_ip event,, does'nt goes after PROCESS_YIELD

I'm trying to implement ECC in 6LoWPAN border router. I'm using contiki Wismote motes for all udp_sender.c as sender and the Border router (border_router.c) needs to receive some messages and also reply ECC keys. I have disabled the default server…
SukantaCB
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1
vote
1 answer

How could i send a message to another program, and output that it has been received?

In contiki, i need to have two files, sender and receiver, the sender sends packets to the receiver. My problem is, the receiver is not outputting that the packets have been received. I tried a while loop inside the receiving packet, i even tried to…
Mack
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0
votes
0 answers

OTA with contiki

I want to perform the ota update process in our custom board of cc2538 uses contiki os. I found some information regarding this process. To add the contiki.oad.client library to the program file. But, I did not find the library like these. Best…
kamalesh
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connectionless ble in contiki-ng not present

I'm looking to observe BLE behaviour by running the contiki-ng example with NullNet, broadcast. I'm aware connectionless ble relies on scanning requests from the master and scan responses for the slave. However, I'm running into a set of…
ayesha
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