Communication Innovations: SeamBlue and OpenChirp Enhancements
Discover the seamless communication solutions offered by SeamBlue and OpenChirp for IoT applications, including pros and cons, OS concepts, and practical implementations. SeamBlue facilitates device migration and connection maintenance, while OpenChirp provides low-power wide-area networking with LoRa technology. Dive into the world of these cutting-edge technologies!
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Presentation Transcript
Communication: SeamBlue, OpenChirp Nabeel Nasir
SeamBlue Without SeamBlue After displacement, need to manually identify new gateway pair reconnect to new gateway mobile peripheral BLE device connection migration between gateways
SeamBlue Pros Cons Super useful for applications with wearable devices Static analysis to get state hacky Maintenance headache No modification of the IoT device code How do they find movement speed and direction of device? Turn off device and turn on at another place? Access Address impersonation Hard to troubleshoot issues? Pair to all devices and then do auto-reconnect when out of range
SeamBlue - OS Concepts GW - SeamBlue app on Android OS Multi-tasking Read BLE packets and process for normal operation Check for movement of peripheral device Pairing state migration Connection migration Virtualization BLE radio Wi-Fi/LTE radio for connection transfer to other gateways Use of timers for evaluation of connection transfer Link Layer packet loss calculation
OpenChirp Low-power, Wide Area Network Collaborative telemetry LoRaBug end-devices + LoRaWAN protocol + PubSub server + Goodies = OpenChirp
OpenChirp Pros Cons Open source design No comparison with other open LPWANs Remotely registering, managing, and extracting data from the devices Design choices not explained CC2560 MCU Semtech SX1276 LoRa radio TI-RTOS Deep-sleep current of Semtech chip from 20 uA to 287 nA Amazing battery life (years on 2 AA batteries) + km scale range
OpenChirp - OS Concepts Gateway devices Watchdog timer for reset (remote deployment) Full-fledged network stack LoRaBug device Configurable kernel Minimal multi-tasking kernel Complete network-enabled environment supporting low-energy operations
Discussion LoRa vs BLE SeamBlue, OpenChirp, .
