• Setting SYSCON register before EINIT.
    Hello, I am trying to initialise the CAN interface on a C164 - I need to set the XPEN bit, and clear the CAN1DIS bit in the SYSCON register. However, I am using C, and thus C_STARTUP_CODE is loaded...
  • NEON  with Cycle count register
    Note: This was originally posted on 15th May 2009 at http://forums.arm.com HI, I am having problem with performance monitor register, All cycle information with NEON instruction is unpredictable and doen...
  • How to save register values before __main function
    Hi, I'm working on a cortex M3 based MCU with Keil. After reset a device related information is stored in R4. This value is cleared after __main and before the main function. Is there a way I can store...
  • Change register before stack operation in Interrupt
    At the start of the interrupt operation, I would like to change some register value before push the registers to the stack. For example, void test(void) interrupt 7 { CLKSEL = 0x02; ... } ...
  • NEON execution cycle and writeback cycle
    Hi, I am working with an ARM Cortex A9 processor. I have a document that describes the duration (in terms of cycle) of SIMD intrinsics (Cortex-A9 NEON Media Processing Engine Tech. Ref. Manual)....