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        // configure the EXT11 interrupt line (P5.3) as an IRQ with the lowest priority
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        // configure the EXT11 interrupt line (P5.3) as an IRQ with the lowest priority
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        SCU_APBPeriphClockConfig(__WIU, ENABLE);
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        SCU_APBPeriphClockConfig(__WIU, ENABLE);
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        WIU_Cmd(ENABLE );
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        WIU_Cmd(ENABLE);
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        WIU_ClearITPendingBit(WIU_Line11);
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        WIU_ClearITPendingBit(WIU_Line11);
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        WIU_DeInit();
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        //WIU_DeInit();
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        WIU_InitStructure.WIU_TriggerEdge = WIU_FallingEdge;
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        WIU_InitStructure.WIU_TriggerEdge = WIU_FallingEdge;
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        WIU_InitStructure.WIU_Line = WIU_Line11;
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        WIU_InitStructure.WIU_Line = WIU_Line11;
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        WIU_Init(&WIU_InitStructure);
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        WIU_Init(&WIU_InitStructure);
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        // The  EXTIT1_IRQHandler() is called every time the SD-Switch is activated (falling edge)
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        // The  EXTIT1_IRQHandler() is called every time the SD-Switch is activated (falling edge)