SPI Master Error in sd_nvic_ClearPendingIRQ

RE: SPI Master Error in sd_nvic_ClearPendingIRQ

Maxwell — Sat, 16 May 2015 01:41:25 GMT

Great answer. this one worked for me. Indeed when the ble stack is included, you must initialize the peripheral as in their examples. I used s110 SDK 8.0.0.

RE: SPI Master Error in sd_nvic_ClearPendingIRQ

eric ely — Sun, 08 Feb 2015 16:00:14 GMT

That was the answer. Thanks for the help, so much had changed from SDK5.2 to SDK7.2 that I didn't catch this one either. I have everything working again.

RE: SPI Master Error in sd_nvic_ClearPendingIRQ

eric ely — Fri, 06 Feb 2015 16:22:37 GMT

Looking back through 5.2, there doesn't seem to be any sense of this. The SPI example doesn't even appear to set up the interrupt priorities at all, it just directly writes to/reads from the register. That would explain why this worked in 5.2 but not 7.2.

By looking in the makefile of SDK7.2 SPI Master example, I can see it is including nrf_soc_nosd/nrf_soc.c.

Man, what a hard way to learn this simple lesson.

RE: SPI Master Error in sd_nvic_ClearPendingIRQ

RK — Fri, 06 Feb 2015 16:06:23 GMT

Don't know if it changed since 5.2, lots did and I never did much with that release, 6.x was out when I started on Nordic. Yes the nrf_soc_nosd folder is new, although the concept of having some of the sd_* functions stubbed out when you're not using a softdevice was in 6.x, it was just called something else. This is a little more consistent (although it would be even more consistent if it were under the softdevices folder, in my opinion, would make the include paths easier). I don't even appear to have 5.x on my machine so I can't look to see if the spi code uses sd_* functions or calls the NVIC calls directly. The way it appears to me is that Nordic has gone over to using the sd_* calls everywhere, when you have a softdevice they are SVC calls, when you include the nosd header file, they just map to NVIC calls, so one codebase fits all. .

RE: SPI Master Error in sd_nvic_ClearPendingIRQ

eric ely — Fri, 06 Feb 2015 15:43:09 GMT

Thanks, I will try this out.

Is this documented somewhere? Is this a new change in SDK7.1? I did not notice this. I had used SPI without SoftDevices in SDK5.2, and while the libraries have vastly changed since then, I never had this issue. Also, I do not see a nrf_soc_nosd folder in SDK5.2.

RE: SPI Master Error in sd_nvic_ClearPendingIRQ

RK — Fri, 06 Feb 2015 03:29:24 GMT

If you're built against the softdevice (where 'built' in this case means the nrf_sof.h file imported is one of the softdevice ones as opposed to the no-softdevice one) then yes you need it enabled in order to call sd_nvic_* because the function makes a SVC call into the softdevice. The first thing that does in every case is check if the SD is enabled or not and fails with that error if it's not.

If you are building to use without a softdevice, you can still use the SPI functions, just change your include path to have drivers_nrf/nrf_soc_nosd instead of softdevice/s110 (for instance) so you pick up the stub functions which don't call into the softdevice but just calls the underlying NVIC calls directly. If you're building for the softdevice then yes you need to at least enable it, even if you start no btle services.

RE: SPI Master Error in sd_nvic_ClearPendingIRQ

eric ely — Fri, 06 Feb 2015 03:18:04 GMT

Do I need the SoftDevice enabled to use SPI? I don't see that anywhere in the examples.

According to the following documentation, the Soft Device can either be enabled or disabled: developer.nordicsemi.com/.../a00006.html

So sorry, next time I ask for help, I won't use my Please and Thank You's.

RE: SPI Master Error in sd_nvic_ClearPendingIRQ

RK — Fri, 06 Feb 2015 03:04:46 GMT

Error 2 is also ... NRF_ERROR_SOFTDEVICE_NOT_ENABLED and I don't see anywhere in the code you posted where are actually enabling it.

Yes it's annoying that the error codes overlap like that.

btw. Don't really need the "PLEASE HELP!!!", anyone posting a question here is already asking for help.