EXTI not work correct

[np1]

Posted on August 04, 2011 at 08:53

When I use PA6,PD6 is EXTI_Trigger_Rising_Falling.When PA6 go H-->L, it generate interrupt, but When I keep PA6 still Low, and PD6 go H-->L, it not generate interrupt.

Please help me. void main() {     CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_1);      GPIO_Init(GPIOD ,GPIO_Pin_6, GPIO_Mode_In_FL_IT);     GPIO_Init(GPIOA ,GPIO_Pin_6, GPIO_Mode_In_FL_IT);     EXTI_SetPinSensitivity(EXTI_Pin_6, EXTI_Trigger_Rising_Falling);     enableInterrupts();     while (1)     {     }; } /**   * @brief External IT PIN6 Interrupt routine.   * @param  None   * @retval None   */ INTERRUPT_HANDLER(EXTI6_IRQHandler,14) {     /* In order to detect unexpected events during development,        it is recommended to set a breakpoint on the following instruction.     */     if(GPIO_ReadInputDataBit(GPIOA ,GPIO_Pin_6)== RESET)         Conut1_count++;             else if(GPIO_ReadInputDataBit(GPIOD ,GPIO_Pin_6)== RESET)         Conut2_count++;      EXTI_ClearITPendingBit(EXTI_IT_Pin6);   } Tks all

[Nickname13136_O]

Posted on August 04, 2011 at 13:39 Could you try with PD6 go L-->H, while PA6 is Low.

[np1]

Posted on August 04, 2011 at 16:08

Still can not. If any PD6 or PA6 Low, can not generate interrupt by other Pin, I checked all Pin Px6 the same problem.

Please help me!

[Nickname13136_O]

Posted on August 05, 2011 at 12:53

If you have PA6 high, can you can interrupt @ PD6 H-->L.

Thanks!

[np1]

Posted on August 05, 2011 at 13:18

Yes, I am sure, I use Stm8L152C6.

If all pin H is no problem, but when 1 Pin Low, not interrupt at other Pin H->L or L ->H Seems when 1 Pin Low, it will latch interrupt generator.I tested with all port the same , look like this MCUs not support. Best regards