Build a device using the Modem
Reference for device builders
A Blecon modem can be integrated into your device and a host MCU can access its API over a SPI, UART or USB connection. It manages the whole Blecon stack from security, RPC and down to radio and optimising power consumption.
On the cloud-end, a collection of devices can be associated with HTTP web-hook endpoints which are triggered on different events (device request, device spotted, etc) forming a network. This gives a clear integration contract to cloud and device teams.
A typical interaction with a Blecon modem
A host MCU can request a connection to a Blecon network. Once established, the host MCU receives an event from the modem and can start sending requests and retrieving responses from the corresponding cloud application.
Blecon request/response model
On the first power-up, a modem will generate its identity (unique UUID) and credentials (public/private key pair) and register itself in-band with the Blecon infrastructure, ensuring security throughout its lifecycle without a complex provisioning process.
Provisioning Procedure
Each modem possesses a unique identifier (UUID). This UUID can be recovered by the host MCU using the modem's API. Additionally if a NFC antenna is connected to the modem, NFC can be used to identify the device. Finally, the host MCU can trigger an identification procedure (typically at the push of a button) over BLE to let nearby hotpots retrieve the device's UUID.
Once retrieved, this unique identifier can be used to connect the device to a Blecon network, and/or associate the device using application-specific logic.
Blecon Network Connection
Blecon modems manage Bluetooth advertising and connections to Blecon hotspots. Unlike typical Bluetooth security, Blecon security is ensured from device to cloud, so a Blecon hotspot cannot understand or tamper with any data. Additionally this means no pairing is necessary for a Blecon device to operate, meaning any hotspot can provide a device with connectivity.
Blecon Security model
The Blecon Modem is provided as firmware and is currently available for a selection of nRF52 based chips and modules.
For getting started with the Blecon Modem firmware, see: