Setup XBee (serial) network
Internet of Things IoT Frameworks 2 years ago
Posted on 16 Aug 2022, this text provides information on IoT Frameworks related to Internet of Things. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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Best Answer
2 years ago
_x000D_ There are two ways to achieve atomic transmissions using Digi's XBee modules. The method varies depending on if API-mode (AP parameter > 0) is in use or not. If API mode is not in use (AP = 0) then the atomicity of data can be encouraged by setting the RO time to be greater than the number of characters of the longest string you are going to send from one of your nodes. This will make the XBee buffer wait the specified number of character times (the time it takes to send a character at a particular baud rate) before starting the over-the-air transmission. Note: you'll have to ensure that you send your entire string all at once to the radio in order for this scheme to work. If API mode is being used (AP > 0) then it is very easy to get the behavior you want. You'll simply use the Tx Request frame (API frame type 0x1) and specify the string data you want to send. The data will always be sent atomically. If API mode is being used on the on the receiving node (i.e. in this case, the coordinator) then the frame data will always arrive atomically as well. Please refer to the Digi XBee 802.15.4 product support page for more information on how to use API mode and search the Internet for the many wonderful XBee libraries which allow you to use Digi XBee modules in API mode easily.