data lost when connected to android

[jawadk]

Hi,

I am using the sdk 14, S132, ble_app_uart example.

My nordic chip receives data from the MCU over UART and passes out to mobile application over BLE.

using the nrf connect app

with IOS:

with Iphone 5 s i lost data

with Iphone 7 it worked and i received the whole data correctly.

with android: 

I lost data.

Tried to change connection interval and MTU but it didn't work.

Do you have any suggest please !?

[Mttrinh]

Hi,

What do you mean by "lost data"? What chip are you using? 

Have you modified anything on the ble_app_uart example? 

Could you give me more details?

[Mttrinh]

What kinda changes have you made to the example? How many bytes do you lose?

Which Android phone have you tested with? Could you test with other Android phones as well?

[jawadk]

Hi,

just updated the uart callback, it sends the data over BLE every MTU size and when a message size received

[jawadk]

Hi,

I tested it with two different androids, it's the same,

tested it also with another Iphone and it's working!

can't determine where is the problem.

Tried to use SDK15.2 with the latest Soft device s132_nrf52_6.1.1_softdevive instead of sdk 14 and soft device 5.0.0

but i have a problem whenat the initialize of the BLE Sack

this function isn't returning !!   sd_softdevice_enable(&clock_lf_cfg, app_error_fault_handler);