Posted on August 08, 2012 at 16:31I have used external interrupt 0, 8 and 9. Before enabling the interrupt i have written the following codes: EXTI_ClearITPendingBit(EXTI_Line8); EXTI_ClearITPendingBit(EXTI_Line9); The interrupt is only called by to...

Posted on June 15, 2012 at 12:32Where is the USBDM and USBDP (pins name for USB) defined under standard library files from stm. I have a microcontroller with USBDM and USBDP as PA11 and PA12. I would like to know in which header file the corresondin...

Posted on January 04, 2012 at 14:56PROBLEM: Timer interrupt is entered immediately in the beginning and not in the desired timing period. The objective is to enter a service routing of TIM4 with a timing of every 10 sec, clock is 72Mhz:   TIM_TimeBa...

Posted on December 26, 2011 at 18:42I want to generate a signal of frequency 250 kHz with a duty cycle of 50%. after 100 cycle the output has to be low continuously until next fifty cycle and again the trend is to be continued. Can anyone suggest me...

Posted on December 18, 2011 at 17:11What is the meaning of Preemppriority and subpriority? If the number allocated to them is higher, does it mean that they are prioritized for the service than the others which are allocated less number or it is th...