COM PORT

#include "stm32f10x.h"
#include "stdio.h"
#include "serial.h"
#include "system_stm32f10x.h"
int main(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    __enable_irq();//дозволяємо обробку переривань
    EXTI_InitTypeDef EXTI_InitStructure,EXTI_InitStructure1;
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
    NVIC_InitTypeDef NVIC_InitStructure;
     // Конфігурація лінії входу
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO, ENABLE);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
    /* Connect Button EXTI Line to Button GPIO Pin */
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource8);
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource9);
    /* Configure Button EXTI line */
    EXTI_InitStructure.EXTI_Line = EXTI_Line8;
    EXTI_InitStructure.EXTI_Mode= EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Falling;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_Init(&EXTI_InitStructure);
    EXTI_InitStructure1.EXTI_Line = EXTI_Line9;
    EXTI_InitStructure1.EXTI_Mode= EXTI_Mode_Interrupt;
    EXTI_InitStructure1.EXTI_Trigger=EXTI_Trigger_Falling;
    EXTI_InitStructure1.EXTI_LineCmd = ENABLE;
    EXTI_Init(&EXTI_InitStructure1);
    /* Enable and set Button EXTI Interrupt to the
    lowest priority */
    NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
    SystemInit();
    SER_init();//ініціалізація послідовного порту
    printf("Hello World!\n");
 while(1)
 {
 }
}
void EXTI9_5_IRQHandler(void)
{
    if(EXTI_GetITStatus(EXTI_Line8)==SET)
     {
        printf("Button8\n");
        EXTI_ClearITPendingBit(EXTI_Line8);
     }
    if(EXTI_GetITStatus(EXTI_Line9)==SET)
    {
        printf("Button9\n");
        EXTI_ClearITPendingBit(EXTI_Line9);
    }
}