We're working on a project with MKL25Z series microcontrollers. We choose FRDM-KL25Z board as our development platform and we're using IAR Embedded Workbench for ARM(latest version) with Segger j-link debugger. By using the SWD port on the FRDM-KL25Z board we download and run our code just fine.
On our custom board(uses MKL25Z128VLH4 instead of MKL25Z128VLK4) everything works perfectly except the intterupts. We couldn't manage to activate any of the interrupts. Projects are exactly the same(so are the vector tables). Our custom board design is also very similar to FRDM-KL25Z board.
What could be the source of this issue?