data lost when connected to android

RE: data lost when connected to android

jawadk — Mon, 13 May 2019 05:19:46 GMT

Hi,

I solved the issue.

just added a request MTU(247) from the App side before starting to listen to the notifications, and that solved the problem, and I started to receive all the data sent from the BLE device to the App Log.

Thank you for trying to help.

Best Regards

Jawad

RE: data lost when connected to android

jawadk — Mon, 13 May 2019 05:15:46 GMT

turned out that it doesn't have an external clock, so I switched it to use the internal one.

RE: data lost when connected to android

Mttrinh — Wed, 08 May 2019 15:04:08 GMT

What do you mean that the function isn't returning? You don't get any error codes?

RE: data lost when connected to android

jawadk — Mon, 06 May 2019 11:55:01 GMT

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);

RE: data lost when connected to android

jawadk — Mon, 06 May 2019 11:49:16 GMT

Hi,

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

RE: data lost when connected to android

Mttrinh — Mon, 06 May 2019 09:02:30 GMT

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?

RE: data lost when connected to android

jawadk — Sun, 05 May 2019 06:01:28 GMT

Hi,

I mean by lost data that when I am sending 255 bytes , not all the data received on the App (nrf connect),

yes I made some changes to the example but not the Connection parameters or the advertising intervals or the MTU.

I am using the nrf52832.

have to say again that with Iphone 7 it worked, and the problem is with android devices !

Thanks for your reply

Regards

Jawad

RE: data lost when connected to android

Mttrinh — Fri, 03 May 2019 12:18:13 GMT

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?