NRF BUSY ERROR with multilink ble_app_uart_c example.

[Yclee]

Hello,

I am testing the multilink BLE (1 central : n peripheral) UART example.

I am using Github code and tested it.

The central example is(SDK 16.0.0):

https://github.com/NordicPlayground/nrf52-ble-app-uart-c-multilink

The peripheral example is(SDK 17.0.0):

https://github.com/NordicPlayground/nRF52-ADC-examples

The peripheral example test is completed, however, when I am trying to communicate with central the error is occured like below.

<info> app_timer: RTC: initialized.
<info> app: BLE UART central example started.
<info> app: Connecting to target D44CBB9421DD
<info> app: Connecting to target 1C2DF74A0DC5
<error> app: ERROR 17 [NRF_ERROR_BUSY] at C:\Users\yclee\Desktop\nRF5SDK160098a08e2\examples\ble_peripheral\nrf52-ble-app-uart-c-multilink-master\main.c:408
PC at: 0x0002F8C5
<error> app: End of error report

The main.c 408 line is 

ble_db_discovery_start function. I think the bluetooth connection problem.

Which part should I look first? or Is something problem with SDK version?

cf) The SDK 17.0.0 ble_app_uart_c example is connected with ble_app_uart well.

Thank you for reading my questions.

Best Regards,

Yclee.

[awneil]

Have you looked at the documentation for the ble_db_discovery_start function? It should tell you the circumstances in which it will return an NRF_ERROR_BUSY result.

At a guess, I would say that you're trying to start a discovery process whilst one is already in progress, but you need to wait for one to finish before starting the next.

[Yclee]

I agree with you that I should wait for one to finish(peripheral) since I tested just before (thanks to your guess), the error is occured when 2 device is connected.

If I power on just 1 peripheral device, the error is not occured. Is the finish means communication off?

Because I want to communicate 2 device with 1 central device, but I don't know where I able to setup the options.

[awneil]

 instead of handling NRF_ERROR_BUSY as a fatal error, just use it as your cue to wait & re-try later ?

[Yclee]

Thank you, I solved just before.. I am using different ble_db_discovery_t variable.

Best Regards,

Yclee.