Data Length Extension #ble #nrf52 #nrf52832 #nrf52840
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henry.wagner@...
I am trying to enable data length extensions in a connection but am limited to the std 20 payload bytes.
I have a Nordic PCA10040 (nRF52832) running Zephyr v1.14rc1 as a central connected to a Laird BL654 module. Both devices have what I believe to be DLE enabled. On the Zephyr side I have enabled: CONFIG_BT_PHY_UPDATE=y
CONFIG_BT_DATA_LEN_UPDATE=y
CONFIG_BT_CTLR_DATA_LENGTH=y
CONFIG_BT_CTLR_DATA_LENGTH_MAX=251
CONFIG_BT_CTLR_PHY=y On the BL654 side, the startup flags are set to enable 2M PHY and DLE. Haven't found a lot of info (other than it should be enabled in the BT stack) or a working sample. Any help/insight is appreciated. Henry
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Carles Cufi
Hi Henry,
Take a look at the configuration used in Nordic’s throughput sample: https://github.com/tejlmand/fw-nrfconnect-nrf/blob/master/samples/bluetooth/throughput/prj.conf
I think you are missing several buffer length settings to achieve full speed.
Regards,
Carles
From:
<devel@...> on behalf of "henry.wagner via Lists.Zephyrproject.Org" <henry.wagner=lairdtech.com@...>
I am trying to enable data length extensions in a connection but am limited to the std 20 payload bytes. CONFIG_BT_PHY_UPDATE=y CONFIG_BT_DATA_LEN_UPDATE=y CONFIG_BT_CTLR_DATA_LENGTH=y CONFIG_BT_CTLR_DATA_LENGTH_MAX=251 CONFIG_BT_CTLR_PHY=y
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