Multi-host Channel Allocation Problem

[zjj]

hi，I am using the NRF52840, softdevice: s140, 

If a Bluetooth host simultaneously connects to multiple Bluetooth peripherals, and the peripherals transmit data to the host via notifications.

However, different peripherals transmit data to the host at varying frequencies and sizes. When the peripherals transmit relatively small amounts of data, the host can receive all the data.

However, when the peripherals transmit larger amounts of data, it may result in an NRF_ERROR_RESOURCES error.

What are the ways to allocate more channel resources for peripherals that send more data, so that all data from the peripherals can be transmitted? Or are there other solutions?

[Simonr]

Hi

An NRF_ERROR_RESOURCES from the sd_ble_gatts_hvx() function points to too many notifications being queued, and you should wait for a BLE_GATTS_EVT_HVN_TX_COMPLETE event and retry. This is mentioned in the ble_gatts.h file for the SoftDevice used.

Best regards,

Simon

[zjj]

Thank you