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  • Of exceptions and aborts..

    Note: This was originally posted on 21st January 2009 at http://forums.arm.com

    The ARM reference manual specifies sometimes MOV PC,R14 and sometimes SUBS PC,R14, #4 for returning from exceptions. But they have not mentioned why. Can somebdy expain?
    Also…

  • LPC2148 timer0 not working as expected

    I am new to ARM and I am trying to produce 1 second delay using timer 0 in LPC2148. But in debug session in Keil, it is giving delay of 4 seconds with 15MHz and 5 seconds with 12 MHz. What is the issue ?

    Here is my code.

    #include <lpc214x.h>
int main…

  • ARM7TDMI or Cortex-M3 board - which should I consider?

    If I have two ARM7TDMI core board and Cortex M3 core board, and I need to choose one of them to use.

    What should I consider the different between them and why?

  • ARM7TDMI: Power dissipation Vs Frequency

    Hi

    I am working on ARM7TDMI  Please help me to understand  the following points:

    1.  how does the current drawn by the processor with respect to the operating frequency(please mention the current values).

    2. Please specify the ideal current…