int main( void ) {
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

#ifdef DEBUG
debug();
#endif
prvSetupHardware();


EXTI_DeInit();

DebugLedInit();

DebugButtonInit();
// DebugGpioInit();

/* Connect Button EXTI Line to Button GPIO Pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_Pin_6);
/* Configure Button EXTI line */
EXTI_InitStructure.EXTI_Line = EXTI_Line6;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //EXTI_Mode_Interrupt; //EXTI_Mode_Event
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; //EXTI_Trigger_Rising_Falling; //EXTI_Trigger_Falling; //EXTI_Trigger_Rising
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);

/* Enable and set Button EXTI Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;//0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;//0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
__enable_irq();
/* Check the parameters */
assert_param(IS_EXTI_LINE(EXTI_Line6));
EXTI->SWIER |= EXTI_Line7;
int a;
while(1) {
//if (GPIOB->IDR
if (!( GPIOB->IDR & GPIO_Pin_6 ))
{

GPIOA->BSRR = GPIO_Pin_6;
}
if (( GPIOB->IDR & GPIO_Pin_6 ))
{

GPIOA->BRR = GPIO_Pin_6;
}
}


return 0;
}

void DebugButtonInit()
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB , ENABLE);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IPD; //GPIO_Mode_AF_OD;//GPIO_Mode_IPD;//GPIO_Mode_IPD; //GPIO_Mode_IPD;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}