how to make the IRQn available in the ble_app_uart application?

[jimlin]

Hello,

I just want to add SPI master module into the ble_app_uart application, and only add spi_master.c and .h into this project with no any other change, and just call the initial function. But, error, NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE, returns when the spi_master_open() called, exactly returned by APP_ERROR_CHECK(sd_nvic_ClearPendingIRQ(p_spi_instance->irq_type)). The irq_type is 0x00000003 which standby for SPI0_TWI0_IRQn. The SPI number I used is SPI 0. The instruction shows that this error means for this IRQn is not available in this ble app uart application, how to correct it?

Thanks.

[Stefan Birnir Sverrisson]

Hi

Try to initialize the SPI library after you have initialized the softdevice. I suspect that this is the issue. The sd_nvic_ClearPendingIRQ is a softdevice function which calls the softdevice API, and the softdevice needs to be enabled in order the call to work. However, in the spi_master.c example, the nrf_soc.h file is different (since it is an example not for BLE) and does not contain softdevice API functions.

Update 17.2.2015 I tried this with SDK 6.0.0 and I can not reproduce this issue. I get the results that RK predicted actually, that when I initialize the SPI before enabling the softdevice, I got the error NRF_ERROR_SOFTDEVICE_NOT_ENABLED when calling sd_nvic_ClearPendingIRQ. But if I initialize the SPI after enabling the softdevice, everything runs smoothly. I include my test code.

ble_app_uart_with_spi_master.zip

[RK]

Your comment isn't very clear. Are you using the softdevice, have you enabled it, are you sure? Yes I agree that if the softdevice isn't enabled the error should be different but can you just confirm that you have enabled it.