IRQn problem after upgrading from 1.12.0 to 4.6.1

[JdeV987]

When using this board definition (for a Raspberry-Pi Pico), this code worked before:
irq_tab[TIMER_IRQ_0_IRQn] = (uint32_t)TIMER_IRQ_0_IRQHandler; // Vektor ins RAM

Now with 4.6.1, I get this error:
"Compilation error: 'TIMER_IRQ_0_IRQn' was not declared in this scope; did you mean 'TIMER_IRQ_0'? "
".arduino15/packages/rp2040/hardware/rp2040/4.6.1//pico-sdk/src/rp2_common/cmsis/stub/CMSIS/Core/Include/core_cm0plus.h:757:22: error: variable or field '__NVIC_EnableIRQ' declared void
757 | __STATIC_INLINE void __NVIC_EnableIRQ(IRQn_Type IRQn)"

Any idea why and how to fix it?

Thank you.
John

[earlephilhower]

That's one heck of a delta in SDK versions! I'm surprised anything still works!

Looks like you're using the raw SDK with (I think) CMSIS names which I think have migrated to different spots in the headers.

I see that defined now in rp2_common/cmsis/stub/CMSIS/Device/RP2040/Include/RP2040.h

src/rp2_common/cmsis/stub/CMSIS/Device/RP2040/Include/RP2040.h:  TIMER_IRQ_0_IRQn          =   0,              /*!< 0  TIMER_IRQ_0                                                            */

So try updating your includes to match the new layout/needed files.

[JdeV987]

I see what you say, the original author of the code I am using used the raw SDK (an old version) , which is very different from the latest SDK. I will just use 1.12.0, actually, it is still good till 3.9.5.
Thank you for your time and assistance.