Good morning developers, I want to ask you what is the maximum transfer speed (Kbps) achieved between the chip nrf52840 (peripheral) and a smartphone (central).
If anyone wants to give details they will be gladly received.
Good morning developers, I want to ask you what is the maximum transfer speed (Kbps) achieved between the chip nrf52840 (peripheral) and a smartphone (central).
If anyone wants to give details they will be gladly received.
We have measured around 1200 kbps with the Samsung S8 phone.
Bjorn this is a nice throughput. You can help me with the test. We deal with the following devices One plus 2, iphone 6 and iphone 8.
In our first approach to test it, We use the SDK example att_mtu througtput . We changed the paramethers related at the transfer speed on the file sdk_config.h. The result was under the 300 kbps.
paramethers
NRF_BLE_SCAN_MIN_CONNECTION_INTERVAL
NRF_BLE_SCAN_SCAN_PHY
NRF_SDH_BLE_GATT_MAX_MTU_SIZE
NRF_SDH_BLE_GAP_DATA_LENGTH
You gime some advice or provide me your configuration or project for read.
I don't mensioned We use a nrf52840 DK on segger studio without ext antenna.
P.D. In another post I read some changes related at the RAM...?
This is a test , but our requirement will be achieve "minimum acceptable " as "maximum possible". You should think that our device must be able the transmiting the contents of a flash memory ( 128 Mbit). The time is relevant for doing this operation.
Like many of topics on internet or differents blogs the overinformation is not our friend.
I don't think that Android or iOS will ever give you "maximum possible".
You could build yourself a custom Central - eg, an nRF52840 Dongle - so then you have full control ...
First of all I appreciate the interest. Second point out the problem if the thread doesn't make sense. My intention is to make a survey to people who have experience in testing a nrf52840 (peripheral device) with a smartphone (central device). Within those hardware requirements consult how to achieve the greatest possible transfer.
1- Within the points to compare the operating system (Android or iOS) can be in play.
2- Parameterization of the "peripheral" equipment firmware.
3- Configuration of the "central" equipment software.
Thanks Bjorn. I'll study your info. Then I can write about the test.
Thanks Bjorn. I'll study your info. Then I can write about the test.