how to increse the rate of gzll

[pipixia_8_8]

hi,im use nrf52840 and nrf24lu1p to develop my usb+ble+2.4g product,what i use is: 

 board:pac10056

sdk:

nrf52840:\nRF5_SDK_16.0.0_98a08e2\examples\proprietary_rf\gzll\gzp_desktop_emulator

nrf24lu1p:\nrfready_desktop_2_v3.0.0\source_code\nrfready_desktop_dongle\projects\nrfready_desktop\dongle

my confuse is:

no.1,about the max packet  payload

i browser the nordic web,deferent min timeslot means deferent max  packet  payload.

but in the file nrfready_desktop_2_v3.0.0\source_code\nrfready_desktop_dongle\gazell\common\gzll.h show the packet payload is 32.And in the nordic devz ,some anwsers show it conld be 32.

so what is the real max packet  payload?

No.2,why the speed of mouse packet send  is so slow?

in the project  nRF5_SDK_16.0.0_98a08e2\examples\proprietary_rf\gzll\gzp_desktop_emulator,i modeify the code ,and the nrf24lu1p dongle insert in the pc ,i use USBlazer to observe the usb info

i prees the mouse key 5s,i see in the rtt,the count is 280.and the  USBlazer's result too. the timeslot in my device code is 504,the GZLL_DEFAULT_PARAM_RX_PERIOD in the nrf24lu1p's dongle is 1008,as say

 https://devzone.nordicsemi.com/f/nordic-q-a/11404/gazell-frame-rate-too-low?ReplySortBy=CreatedDate&ReplySortOrder=Ascending

the gzll can send 833packet  per second,Obviously the packet of my device send is too little. so what is the problem ?

N0.3 now i what transfer 400k bytle data to my device by gzll in 30s，is it possible？if the gzll can do that,what should i do ?

[Kenneth]

1. The max packet size is 32bytes, however to effectively send 32bytes you need to set the rx_period to 600[us]. If you reduce the rx_period then that will affect the max packet size.

2. First verify that you get 833 packets/sec by using nRF5 to nRF5 communication, and use the configuration as described in the linked post. 

3. The fastest is around 833 packets/sec * 32bytes = 26.7kBps without packet loss. This will be up to 800kB in 30 seconds.

[pipixia_8_8]

thank very musch for you help!