ZigBee in nrf52840

[Filya]

Hi everyone

I have a question about zigbee. After reviewing the documentation, I realized that on the nrf52840 chip, you can use zigbee with a frequency of 2.4 GHz. But is it possible to use it with a frequency of 868 MHz? This is not mentioned anywhere, but after reviewing the library files I found this list of frequencies.

/**
  Node descriptor - frequency value
  */
enum zb_freq_band_e
{
  ZB_FREQ_BAND_868 = 1,         /*!< 868 MGz */
  ZB_FREQ_BAND_902 = 1 << 2,    /*!< 902 MGz */
  ZB_FREQ_BAND_2400 = 1 << 3    /*!< 2400 MGz */
};

Because of this, I had doubts on this issue.

Thank you in advance.

[Simonr]

Hi

No, the nRF52840 radio only operates at 2.4GHz. The zboss stack is just a generic zigbee stack and is used in most Zigbee products, which is why that function is present. The nRF52840 should however be able to communicate with other Zigbee products supporting both 2.4GHz and sub-GHz frequencies.

Best regards,

Simon

[Jiuping Li]

You mean nRF52840 can communicate with its sub-GHz frequencies?

[Simonr]

No, it can communicate with other Zigbee products at 2.4GHz. But there is Zigbee products out there that can communicate on both 2.4GHz and sub-GHz frequencies.

[Simonr]

No, it can communicate with other Zigbee products at 2.4GHz. But there is Zigbee products out there that can communicate on both 2.4GHz and sub-GHz frequencies.