• Bootloader in MK20DX256 32-bit ARM Cortex-M4?
    hi, i am first time trying to use ARM processor, I have selected Freescale following processor. MK20DX256 32 bit ARM Cortex-M4 my confusion are: 1: I don't know how to load my program in my ARM processor...
  • How long bitfields on which ARM?
    I need to be able to handle long bitfields as effectively as possible. Right now I need up to 64 bits in length. Are there instructions to set, clear and test individual bits in one cycle available for...
  • How to get absolute value of a 32-bit signed integer as fast as possible?
    Hi. I wonder how to calculate absolute value of a 32-bit signed integer in C as fast as possible. I saw that there is a FPU instruction VABS.F32, which do that in one cycle (above the floats). I thought...
  • Which bit fields are for Cortex-M4F SCB_ICSR.VECTORPENDING
    Hi Team, I would like to check the SCB_ICSR register, the content of 'Cortex-M4 Devices Generic User Guide' makes me confused. According to the document DUI0553B, this figure shows the VECTORPENDING...
  • Function Parameters on 32-bit Arm
    Function call basics Typically when teaching a class about embedded C programming , one of the early questions we ask is " Where does the memory come from for function arguments? " Take, for example...