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Everything ARM and LPC
By Cyberzim
I'm trying to work out the TIM2 interrupt handler. But it doesn't seem to run the function at all.
Here is my initialization code for the TIM2:
Code: Select all
//Enable TIM2.
  TIM2->PSC = 65535;
  //Auto reload value.
  TIM2->ARR = 1000;
  //Enable update interrupt (timer level).
  //Enable timer.
  TIM2->CR1 = TIM_CR1_CEN;
  //Enable interrupt.

Here is my handler:
Code: Select all
//Timer 2 interrupt.
void TIM2_IRQHandler(void) {
  //Is the timer set?
  if(TIM2->SR & TIM_SR_UIF) {

    //Draw a rectangle on screen (test purpose).
    FillRect(100, 100, 20, 20, 0xFF);   
    //Clears flag.
    TIM2_SR &= ~TIM_SR_UIF;
I have tested the timer itself and it works flawlessly, but It won't work with an interrupt handler.
I'm using CrossWorks for ARM.

Any suggestions?


Simon H.A.
By hsutherl
Your code flashed an LED for me once I changed the TIM2_SR to TIM2->SR in the last line. This using generic tools rather than Crossworks. You might have to post the entire code and include details on board and uC.
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