• Problem in calling the function in ISR
    Hi, I'm using LPC2148 controller and interfacing accelerometer sensor, I need to enable this sensor all the time and with the counter set in the ISR it should come out of the loop, below is the...
  • ARM Cortex Educational Courses
    Hi all, I'm still getting used to the new interface for the ARM Community website, so pardon me if this post is not in the right place. I'm working on creating video tutorials that take a hands-on approach...
  • unable to wake up from power down mode in lpc2148 using external interrupt
    Hello Community, I am trying to execute the power down mode in lpc2148 (ARM7) controller. The power down mode instruction executes properly but after that it fails to wake due to EINT0 (external interrupt...
  • 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...
  • 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...