Multilink client GATTC event handler not working

RE: Multilink client GATTC event handler not working

Ole Bauck — Fri, 04 Dec 2015 13:20:40 GMT

sd_ble_gatts_hvx(...) will do sd_ble_gatts_value_set(...) and send the value as a notification (if this is enabled). It looks fine to me. Could you update your post with the code (both peripheral and central) so I can try it here?

RE: Multilink client GATTC event handler not working

Christian E — Fri, 04 Dec 2015 09:11:23 GMT

Thank you, I'll look into it. On a side note; How would you normally go from at sd_ble_gatts_value_set(...) to a sd_ble_gatts_hvx(...), central side? I have tried:

Added a new notify_enable() function in the db discovery handle that finds the custom characteristic.
In on_evt_hvx i have added a if statement that looks for the custom characteristic handle
In client_handling_init() I add ble_db_discovery_evt_register() with the custom uuid and the custom handler

Anything I have done wrong, or am missing?

As mentioned in OP, the server seems to work fine when I test it with the master control app. The characteristic value is only updated when there is a change. And in the log i can see that the app gets the notifications.

Thanks!

RE: Multilink client GATTC event handler not working

Ole Bauck — Thu, 03 Dec 2015 16:47:28 GMT

0x27 is BLE_GAP_EVT_ADV_REPORT which is handled in on_ble_evt(...). I don't understand what you have changed, because the multilink peripheral code uses sd_ble_gatts_hvx(...) by default and not sd_ble_gatts_value_set(...), and the client_handling_ble_evt_handler(...) you have is not the same as in the multilink central example. You have an APP_ERROR_CHECK(...) on an uninitialized variable, which is not safe, but err_code is probably zero (NRF_SUCCESS). You need to pinpoint more exactly where the code fails. If you define DEBUG in the preprocessor symbols and set a breakpoint in app_error_handler(...) you can go into debug and check where the error happened and which error code it is.

RE: Multilink client GATTC event handler not working

Christian E — Thu, 03 Dec 2015 11:09:00 GMT

Using SDK 10 btw.