Cortex -- PD0 interrupt

[cgrenier]

Posted on October 01, 2008 at 15:19

Cortex -- PD0 interrupt

[cgrenier]

Posted on May 17, 2011 at 12:26

Hello,

I have a problem to configure PD0 as an input, interrupt enable. I got no external interrupts. Only software interrupt works. The GPIOD -- IDR (input data register) register shows the current state of this line. When I press to switch (PD0), The IDR register shows the 0 at PD0, otherwise it shows 1. So, it should generate an interrupt. I have other switches on other inputs and it works pretty well. Is there any examples to use PD0 and external interrupt? GPIO_PinRemapConfig(GPIO_Remap_PD01, ENABLE); EXTI_InitStructure.EXTI_Line = EXTI_Line0; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); // Set the Preemption Priority to ''1'' NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; // Set the Command to ''Enable'' NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; // Configure and enable EXTI0 IRQ Channel NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQChannel; NVIC_Init(&NVIC_InitStructure);

[markusmueller19]

Posted on May 17, 2011 at 12:26

Thank you very much, I have a 48 pin package... :(

[markusmueller19]

Posted on May 17, 2011 at 12:26

Gives there a solution for this problem?

I have the same problem.

[tibo]

Posted on May 17, 2011 at 12:26

RM0008, page 107: ''PD0, PD1 cannot be used for external interrupt/event

generation on 36, 48, 64-pin packages.''

[jj]

Posted on May 17, 2011 at 12:26

tibo-

Thank you from my firm too - we had started laying out a 64 pin device - even after having read/noted RM0008. Looks like its time to extract every ''gotcha'' to a special file where we're less likely to ''miss them'' in the mix...