Applications of USB and IEEE 802.15.4 MAC Library in Nrf52840?

RE: Applications of USB and IEEE 802.15.4 MAC Library in Nrf52840?

soumil — Mon, 10 Jul 2017 07:56:16 GMT

Thanks Sigurd

RE: Applications of USB and IEEE 802.15.4 MAC Library in Nrf52840?

Sigurd — Fri, 07 Jul 2017 12:07:04 GMT

Yes, that is correct. It's for audio over USB. See this page.

RE: Applications of USB and IEEE 802.15.4 MAC Library in Nrf52840?

soumil — Fri, 07 Jul 2017 11:10:23 GMT

Okay thanks Sigurd. What about the audio class module example? In this case can I play audio through the usb or is it something else?

RE: Applications of USB and IEEE 802.15.4 MAC Library in Nrf52840?

Sigurd — Fri, 07 Jul 2017 10:31:22 GMT

You can power the chip from USB. The nRF52840 can operate from +5.5v down to 1.7v supply voltages allowing direct supply from rechargeable batteries and USB supplies.

If you can power the nRF52840 from a smartphone, depends on the smartphone. The phone will have to support USB On-The-Go for this to work.

RE: Applications of USB and IEEE 802.15.4 MAC Library in Nrf52840?

soumil — Fri, 07 Jul 2017 10:15:36 GMT

Thanks Sigurd. This is really helpful. Can you explain a bit when you say direct USB power for hosted applications. Are you saying that if this device is connected to a phone through usb, it can charge it as well?

RE: Applications of USB and IEEE 802.15.4 MAC Library in Nrf52840?

Sigurd — Fri, 07 Jul 2017 09:20:14 GMT

Hi,

USB:

The on-chip USB and VBUS regulation allows for direct connection to USB hosts for data transfer and direct USB power for hosted applications.

In the SDK we have several examples that shows different use-cases:

USB Mass Storage Device example
Example that shows the CDC ACM USB class, commonly known as Virtual COM port
Examples that shows HID mouse and HID keyboard
USB audio class module example

IEEE 802.15.4:

IEEE 802.15.4 defines the physical (PHY) and Medium Access Control (MAC) layers and forms the basis for numerous upper layer networking specifications including Thread, 6LowPAN, Zigbee and Wireless HART.

Our main focus is aimed at Thread, where we offer an complete SDK for Thread solutions on the nRF52840 i.e., nRF5 SDK for Thread. The main application for Thread is smart home automation. We have a demo video showcasing this here.