Can nrf52840 work with ESP32 in Bluetooth low energy application?

[davidm]

I want to create a Bluetooth LE application, one peripheral and multiple (2- 5) centrals.For centrals I will use nrf52840 boards, but for peripheral, I was thinking of using ESP32 because I want to use it as a gateway to the cloud.

But my questions are

1. First is it possible for nrf52840 to work with ESP32? (It seems like ESP32 uses Bluetooth V4.2)
2. If yes are there any limitations? can the range be affected,comparing if I would have used nrf52 on both ends?

[Simonr]

Hi

Most of our examples operate with BLE_GAP_PHY_AUTO which sets the PHY automatically to whatever the other device prefers. So is you set a BLE_GAP_EVT_PHY_UPDATE_REQUEST when you've connected to the ESP32, the nRF52840 should recognize that the ESP32 only supports 1MBPS and will use that.

I don't think there is much else you need to modify in the nRF52 firmware, this all comes down to what you want the connection parameters, etc. to be.

Best regards,

Simon

[davidm]

Oh ok I see, Thank you, Simon.

I started to look in the code, I am using ble_app_blinky_c example. Now I want to get the service uuid so that i can pass to advertising service in ESP32 code.How do I get the full-service UUID, I see that in the ble_lbs_c service  UUID is declared as 0x1523 and LBS_UUID_BASE {0x23, 0xD1, 0xBC, 0xEA, 0x5F, 0x78, 0x23, 0x15, 0xDE, 0xEF, 0x12, 0x12, 0x00, 0x00, 0x00, 0x00}