RADIO_IRQHandler multiply defined

[Vito]

Maybe question similar to this one devzone.nordicsemi.com/.../

Can I use the interrupt generated by RADIO_IRQHandler(void) while implementing another protocol? At the moment I am using esb only (no softdevices), but probably I will implement BLE or ANT in future. I got the error

 Error: L6200E: Symbol RADIO_IRQHandler multiply defined (by nrf_link_core.o and main.o).

Does it means that the interrupt is used by the ESB library and I cannot access it? Would it be the same using softdevices?

[Stefan Birnir Sverrisson]

Hi

For a dual protocol implementation, I recommend to use the Timeslots API. The documentation for the Timeslots API is in the latest S110 softdevice specification. There is also an example in the SDK that uses Timeslots API to implement BLE+Gazell.

Update 3.10.2014 With the timeslot API you can receive RADIO interrupt signals from the softdevice, see table 18 in the S110_SoftDevice_Specification_v1_3, NRF_RADIO_CALLBACK_SIGNAL_ TYPE_RADIO. I attach a simple Timeslot example code which is perhaps good to examine when getting started with the Timeslot API. The example is provided "as is"

ble_app_hrs_with_timeslot.zip

Update 25.6.2015 The ble_app_hrs_with_timeslot.zip example above was made for nRF51 SDK 6.0.0 but should also work for 6.1.0

[MH]

I tried the attached file and it works just fine, but there is a problem when central connect to the device it stop functioning while the BLE is in connect state, after the connection is closed it resume its operation and i can see that TIMER0 interrupt is working in the timeslot could you please give me some suggestion?

[Vito]

Is the linked example in the SDK really using timeslot API? I can't find any sd_radio_session_open() call in it, it seems to me that the mode is only selected by button.

[eddy]

After I changed the priority of earliest from NRF_RADIO_PRIORITY_NORMAL to NRF_RADIO_PRIORITY_HIGH, it works, but the connection between peripheral and central always broke. How can I do the scanning meanwhile maintaining the connection?