When STM32F407 NAND Flash Erase, interrupt is not working.

[UYeo.1]

I use STM32F407 and external NAND Flash.

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I modify void SysTick_Handler(void) -> add GPIO Toggle.

So Normal Condition, GPIO pin is toggled regularly.

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When HAL_NAND_Erase_Block() excute, GPIO pin is toggle irregularly.

After HAL_NAND_Erase_Block() finish, GPIO pin is toggle regularly.

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​Additionally,

Uart_IRQHander()

{

rx_data = UARTx->DR;

UARTx->DR = rx_data;

}

When HAL_NAND_Erase_Block() is not excuted, Good Return.

But HAL_NAND_Erase_Block() excuted, Bad Return.

Why???

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