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Part Number: CC1200
Hi Ti community
I need to have wireless communication with the following characteristics. (The communication environment is in water)
1- The communication is bi-directional. I mean the chips at both sides of the communication be able to send and receive data packets (They are transceivers.)
2- The carrier frequency is changeable (434 MHz is desired).
3- And more importantly, I need the communication to be able to have connection pick capability like RFID systems. In other words, if the chip at one side closes the chip at another side which advertising a unique signal, it can pick the connection and establish the communication.
After some searches, I came up with CC1200 a physical layer. Do you think this chip has the mentioned communication parameters?
Also, can you please let me know what communication protocol this chip is following?
Thanks and Regards
I have assigned an expert to comment.
Best Regards, Eirik Please refer to the resources and abbreviations below for explanations and answers to many questions.
SLA - Simplelink Academy, SCS - Sensor Controller Studio, SC - Sensor Controller, TI Cloud Tools, Resource Explorer, Bluetooth low energy software stack, Bluetooth low energy software stack archive, TI BLE Wiki (OLD), BLE Getting Started and FAQ, CC1352R and CC26x2R Intro, Bluetooth SIG Core Spec, CC2640R2F SDG, CC26X2 SDG, CC2650/CC2640 SDG, BLE PACKET SNIFFER
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In reply to Eirik V:
"I need to have wireless communication with the following characteristics. (The communication environment is in water) ": Have you looked into the physics of water and RF? Have you calculated if you are able to achieve the range you require?
In reply to TER:
I am not sure I understand requirement # 3:
I need the communication to be able to have connection pick capability like RFID systems. In other words, if the chip at one side closes the chip at another side which advertising a unique signal, it can pick the connection and establish the communication.
The radio will receive packets from all devices that sends with the same RF parameters (frequency, data rate, modulation format etc.) given that the signal is strong enough and that the sync word is the same.
The packet format for the CC1200 is pictured in the data sheet. It does not follow any communication protocol, as you need to write your own protocol.
You can use SmartRF Studio to evaluate the chip, and also take a look at the available code examples here:
In reply to Siri:
Thanks, Siri for your reply.
I did an experiment to investigate the signal strength to see if the coming signal from the sensor network inside water is strong enough. To do so, I put the sensors connected to the communication setup inside ziplock bag and put it in the bucket of water. For the range of around 10 meters, the RSSI was -47dbm which could be detected.
As for question #1, can I have bi-directional communication with the chip?
In reply to Saber Kazeminasab:
Non of the CC1xxx devices are bi-directional.
But in its datasheet, it is mentioned that CC1200 is a transceiver.
Sorry, I read it as full-duplex since that is a common question. Yes, as you can see from the datasheet the part can do both RX and TX but not on the same time.
Thanks a lot!
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