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[Emin Yagmahan]

Posted on June 19, 2018 at 19:46

Bluetooth Support of SPBTLE-RF (No BLE) [Bl475IOT]

Hi Guys,

currently I am dealing with the B-L475-IOT01A.

This is equipped with a Bluetooth� V4.1 module (SPBTLE-RF).

According to the data sheet (to be found in the appendix), this is a single-mode device.

According to my research, no data can be sent with this chip via 'normal' Bluetooth BR / EDR.

Here I would apparently have needed a dual-mode chip.

Nevertheless, both BL and BLE share the layer L2CAP.

The underlying physical layer is also different.

BL has 79 channels, BLE has 40, different algorithms (ShiftKeying vs. Hopping) etc.

Is there nevertheless the possibili

ty to establish a communication with Bluetooth BR / EDR with the chip?

https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=2ahUKEwiSlsObo-DbAhXI_aQKHVAsAOYQjRx6BAgBEAU&url=https%3A%2F%2Fwww.oreilly.com%2Flibrary%2Fview%2Fgetting-started-with%2F9781491900550%2Fch01.html&psig=AOvVaw1EBGpjbrb5rN4u47Ci_tzf&ust=1529516524582332

Thank you for your answers.

Best regards

Emin Yagmahan

#stm32l4 #spbtle-rf #spbtle #b-l475e-iot01 #bluetooth-low-energy #bluetooh #ble

[Antonio Vilei]

Posted on July 02, 2018 at 16:30

Hi Peter,

as you said, the SPBTLE-RF module, based on the BlueNRG-MS chip, is single mode, also known as Bluetooth Smart or Bluetooth Low Energy (BLE). Coming back to your question, it cannot establish any communication with a Bluetooth classic device (BR/EDR).

Currently, ST has no solution for dual mode chips, i.e. supporting both BLE and classic. The BlueNRG family of chips mainly targets Internet of Things (IoT) application, where very low power consumption is key. Supporting also Bluetooth classic (typically supported by smartphones) would have required a more power-hungry design.

Best regards,

Antonio