Porting SDK14 project to SDK15.2 - IRQ handlers and other issues

[Sydney]

I'm in the process of trying to port my SDK 14 project to SDK 15.2. I've made a pretty good amount of progress, but I have two issues that I can't seem to figure out.

The first is somewhat minor but very annoying. For some reason since I replaced the SDK 14 files with SDK 15.2 in my repo, the uint32_t type is no longer recognized by Eclipse even though other integers (uint16_t etc) are. APP_ERROR_CHECK is also marked as unrecognized. The compiler doesn't have issues with these though, so it seems to be something with Eclipse. If I go back to my SDK 14 branch (which just changes the code since my Eclipse settings are not tracked in my repo), uint32_t and APP_ERROR_CHECK are recognized by Eclipse without issue. This is annoying but not a blocker.

However, an issue I'm having with IRQ handlers is keeping me from progressing. Here's the output of my compiler (ARM GCC):

Compiling test_mode.c
In file included from /Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/modules/nrfx/soc/nrfx_irqs.h:49:0,
                 from /Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/integration/nrfx/nrfx_glue.h:59,
                 from /Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/modules/nrfx/nrfx.h:46,
                 from /Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/components/libraries/delay/nrf_delay.h:44,
                 from /Users/user/Documents/source/firmware/system/app/inc/log_print.h:15,
                 from /Users/user/Documents/source/firmware/system/app/src/test_mode.c:9:
/Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/modules/nrfx/soc/nrfx_irqs_nrf52832.h:71:37: error: redundant redeclaration of 'SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler' [-Werror=redundant-decls]
 #define nrfx_twi_0_irq_handler      SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler
                                     ^
/Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/modules/nrfx/soc/nrfx_irqs_nrf52832.h:71:37: note: in definition of macro 'nrfx_twi_0_irq_handler'
 #define nrfx_twi_0_irq_handler      SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler
                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/modules/nrfx/soc/nrfx_irqs_nrf52832.h:66:37: note: previous declaration of 'SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler' was here
 #define nrfx_spim_0_irq_handler     SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler
                                     ^
/Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/modules/nrfx/soc/nrfx_irqs_nrf52832.h:66:37: note: in definition of macro 'nrfx_spim_0_irq_handler'
 #define nrfx_spim_0_irq_handler     SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler
                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/modules/nrfx/soc/nrfx_irqs_nrf52832.h:83:37: error: redundant redeclaration of 'SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler' [-Werror=redundant-decls]
 #define nrfx_twi_1_irq_handler      SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler
                                     ^
/Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/modules/nrfx/soc/nrfx_irqs_nrf52832.h:83:37: note: in definition of macro 'nrfx_twi_1_irq_handler'
 #define nrfx_twi_1_irq_handler      SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler
                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/modules/nrfx/soc/nrfx_irqs_nrf52832.h:78:37: note: previous declaration of 'SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler' was here
 #define nrfx_spim_1_irq_handler     SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler
                                     ^
/Users/user/Documents/source/firmware/nRF5_SDK_15.2.0_9412b96/modules/nrfx/soc/nrfx_irqs_nrf52832.h:78:37: note: in definition of macro 'nrfx_spim_1_irq_handler'
 #define nrfx_spim_1_irq_handler     SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler
                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make: *** [/Users/user/Documents/source/firmware/build/obj/test_mode.o] Error 1

I'm not completely sure what's going on, but it seems like the compiler thinks I'm trying to define the SPIM/TWI IRQ handler twice each for modules 0 and 1. But I'm not- at least not intentionally. My project intends to use TWI0, SPIM1, and SPIM2. My nrfx_config.h sets TWI/TWIS/TWIM/SPI/SPIS/SPIM enable flags as follows:

NRFX_TWI0_ENABLED 1
NRFX_TWI1_ENABLED 0
NRFX_SPIM0_ENABLED 0
NRFX_SPIM1_ENABLED 1
NRFX_SPIM2_ENABLED 1
All TWIM, TWIS, SPIS, and SPI are disabled.

If I search my entire working directory for NRFX_SPIM0_ENABLED, I find it defined in several places (excluding example directories).

1. sdk/config/nrf52832/config/sdk_config.h
2. sdk/integration/apply_old_config.h
3. sdk/modules/nrfx/templates/nRF52832/nrfx_config.h
4. <my application directory>/nrfx_config.h

So it was confusing to figure out which enable flag the compiler was actually using. But I added .orig extensions to numbers 1-3 so they won't be included and commented out the inclusion of apply_old_config.h in nrfx_glue.h. And I still get the same problem.

Other possible points of interest- I originally intended to use the legacy files provided to minimize the amount of changes I'd need to make to my application code up front. But I wondered if something in that legacy layer was causing issues, so I excluded it and made the necessary code changes (mostly nrf_drv_x to nrfx_x) and modified linker and sdk_config.h (and nrfx_config.h) files from the SDK instead of trying to modify the corresponding files I carried over from SDK 14. But none of those steps helped this SPI/TWI IRQ issue.

Any thoughts?

[Edvin]

Hello,

Is it possible to reproduce the issue with the armgcc folder, so that I can try to replicate it just using the makefile from the armgcc folder? 

If so, could you send the project?

Best regards,

Edvin

[Sydney]

Sorry about the delayed response. I'm not sure I understand exactly what you mean. Do you mean to try to reproduce it with the armgcc makefile in one of the examples? Unfortunately the structure of my project's makefiles are pretty different from the example makefiles so I think there would be a non-trivial amount of work involved. Would it be sufficient to attach my config files? I have attached them just in case.

In looking into this with fresh eyes just now, it seems odd to me that nrfx_spim.h includes prototypes for SPIM0, SPIM1, SPIM2, and SPIM3 regardless of which SPIM modules are enabled. And nrfx_twi.h includes prototypes for TWI0 and TWI1, regardless of which TWI modules are enabled. If I undo my previous comments/edits to nrfx_irqs_nrf52832.h as previously mentioned and instead gate all the nrfx_spim_x_irq_handler(void) and nrfx_twi_x_irq_handler(void) IRQ handler prototypes behind corresponding #if NRFX_CHECK(NRFX_XXXX_ENABLED) (like the corresponding IRQ handler definitions are gated), my project compiles. Shouldn't the IRQ handler prototypes be gated behind NRFX_CHECKS so that they're not duplicated when nrfx_irqs_nrf52832.h is included?

2664.sdk_config.hnrfx_config.h

[Nguyen Hoan Hoang]

The 840 has 4 spi so you can have 2 twi & 2 spi at the same time.  SPI0 & 1 are shared with TWI0 & 2.  SPI2 & 3 are independent.  

[gauthamranganathan]

I can't seem to find SPI 3

[Nguyen Hoan Hoang]

Don't know about the Nordic driver implementation.  But data sheet said it and this driver has support for it.  https://github.com/I-SYST/EHAL/blob/master/ARM/Nordic/src/spi_nrf5x.cpp

[gauthamranganathan]

Thank you for your reply nguyen hoan hoang. Our project is more than half way through now and we have been using nordic drivers. I would like to implement two instances of TWI and two instances of SPI.

[Edvin]

From e.g. the SPI section in the nRF52840 there is a section regarding Shared Resources. In this section there is a link to Instantation.

So basically, in the last link, you can't have two peripherals sharing the same ID from the table active at once.

If you need 2xSPI and 2xTWI, then you can use e.g:

TWI0, TWI1, SPI2, SPI3. Note that SPI3 is only master, not SPI slave.

Are you aware of that you can have several devices connected to one SPI bus and several devices connected to one TWI bus? That is the nature of these protocols. With the TWI you only need to connect all devices with the two wires, while on SPI you would need a chip select (CS) line for each slave, and then they share the other lines (MOSI, MISO, CLK).

BR,,

Edvin

[gauthamranganathan]

thank you for your reply Edvin, 

I understand that SPI 3 is only master. I am okay with that. But i don't see an instance for SPI 3 (as seen in screenshot above).

I do not want to use spim as that would enable DMA controller. This will increase my current consumption. 

[Edvin]

Hello gauthamranganathan,

This is not really related to porting from SDK14 to SDK15. Please create a new ticket.

[Nguyen Hoan Hoang]

Then you are out of luck. SPI3 is DMA only.