I'm trying to set up FTM interrupt from M4 core with MQX4.0.2, I use _int_install_isr, FTM Chan interrupt flags is set, but never branch to ISR function.
Something should be enabled somewhere, but don't know what.
This is a code snippet that shows how to enable an ISR. You can take a look at the BSP source code and see how they are handled in the interrupt drivers.
I hope this helps,
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