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TWR-K65F180M: problems accessing address 0x4003A000 on Kinetis K65 MK65FN2M0VMI18

Question asked by silentlab54 on Jun 20, 2016
Latest reply on Jul 7, 2016 by Robin_Shen


I'm using the evaluation board TWR-K65F180M, which is built on the Kinetis MCU MK65FN2M0VMI18.

I'm trying to configure FlexTimer 2 but I'm experiencing a problem: when I try to access the register FTM2_SC (which is the base peripheral address: 0x4003A000) the system hangs to the DefaultISR interrupt (which is located on the file Startup_MK65F18.S).


I'm using KDS 3.1.0, a Segger J-Link Debugger and the Project uses the Kinetis 1.3 SDK (specifically built for the specified processor K65) with Processor Expert; I obtain the same (bad) results with a bare-metal project.


It looks strange that I cannot access to a well-documented memory-mapped register; the situation is strange because i can access without any problems to FlexTimer 0 and 1 (peripheral base registers: 0x40038000 and 0x40039000).


I have already checked the chip documentation, the evaluation board documentation and the mask errata for the chip, without finding any solution to the problem.

I have attached the a simple project to simplify the diagnose of the issue.


Thanks in advance for your answers.

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