GPIO interrupts in CH582M MCU

[tankist]

I've got CH582M MCU and I need to use GPIO interrupts. But unfortunately I can't manage with it. Here is my code:

Code: [Select]

#define INT_PIN     GPIO_Pin_18

int main()
{
    SetSysClock(CLK_SOURCE_PLL_80MHz);
    // LED init
    GPIOB_ModeCfg(GPIO_Pin_4, GPIO_ModeOut_PP_20mA);
    GPIOB_SetBits(GPIO_Pin_4);
    // Input GPIO init
    GPIOB_ModeCfg(INT_PIN, GPIO_ModeIN_PU);
    GPIOB_ITModeCfg(INT_PIN, GPIO_ITMode_FallEdge);
    // Interrupt init
    PFIC_ClearPendingIRQ(GPIO_B_IRQn);
    PFIC_EnableIRQ(GPIO_B_IRQn);
    while(1);
}

// Interrupt handler
__INTERRUPT __HIGH_CODE void GPIOB_IRQHandler()
{
    GPIOB_ClearITFlagBit(INT_PIN);
}

Could anybody suggest what is wrong? I've never caught an interrupt. I can't find any GPIO interrupt example for that MCU.

[mon2]

Follow the example from section #3 here:

https://www.cnblogs.com/risc5-ble/p/17915503.html

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