NRF52840 RADIO ISR Usage - Arduino Nano 33 BLE

ejbasile · November 29, 2021, 3:43am

Hello,

I am developing a custom radio protocol on the Arduino Nano 33 BLE to avoid the overhead associated with the ArduinoBLE library; however, I encountered an issue with the RADIO_IRQHandler. The handler seems to be "blocked" under the MbedOs' framework.
I noticed the following here:

github.com

arduino/ArduinoCore-mbed/blob/64bf2aa92bf7fe26ab08aae5f4340f2c2920ebaf/libraries/mbed-memory-status/startup_example.S.txt#L240


      
          Default_Handler:
              B       .
              .size   Default_Handler, . - Default_Handler
          
          
    .macro  IRQ handler
              .weak   \handler
              .set    \handler, Default_Handler
              .endm
          
          
    IRQ  POWER_CLOCK_IRQHandler     /* restricted */
              IRQ  RADIO_IRQHandler           /* blocked */
              IRQ  UART0_IRQHandler_v
              IRQ  SPI0_TWI0_IRQHandler_v
              IRQ  SPI1_TWI1_IRQHandler_v
              IRQ  GPIOTE_IRQHandler_v
              IRQ  ADC_IRQHandler_v
              IRQ  TIMER0_IRQHandler          /* blocked */
              IRQ  TIMER1_IRQHandler_v
              IRQ  TIMER2_IRQHandler_v
              IRQ  RTC0_IRQHandler          /* blocked */
              IRQ  TEMP_IRQHandler          /* restricted */

I was wondering if there is a weak link to be overwritten or some way to utilize the IRQ Handler as it is imperative I have this functionality for determining when packets have been received/processed.

I have also been in communication with Nordic's team here if this helps:

Thanks!

system · May 28, 2022, 3:43am

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