Picproje Elektronik Sitesi

#include <stdint.h>
#include <system_stm32f0xx.h>
#include <stm32f0xx_gpio.h>
#include <stm32f0xx_rcc.h>
#include <stm32f0xx_usart.h>
#include <stm32f0xx_misc.h>

void uart_send_char(char chr);
void uart_send_string(unsigned char *string);

void USART1_IRQHandler(void)
{
	char temp;
	temp=USART_ReceiveData(USART1);
	uart_send_char(temp);
}

void uart_send_char(char chr)
{
	while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
	USART_SendData(USART1, chr);
}

void uart_send_string(unsigned char *string)
{
    while(*string)
    {
    	uart_send_char(*string);
        *string++;
    }
}

int main (void)
{
	uint32_t times;
	USART_InitTypeDef USART_InitStructure;
	GPIO_InitTypeDef GPIO_InitStructure;
	NVIC_InitTypeDef NVIC_InitStruct;

	RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);

	RCC_APB1PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);

	GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_1);
	GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_1);

	//Configure USART1 pins:  Rx and Tx ----------------------------
	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_9 | GPIO_Pin_10;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
	GPIO_Init(GPIOA, &GPIO_InitStructure);

	//Configure USART1 setting:         ----------------------------
	USART_InitStructure.USART_BaudRate = 9600;
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;
	USART_InitStructure.USART_StopBits = USART_StopBits_1;
	USART_InitStructure.USART_Parity = USART_Parity_No;
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
	USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
	USART_Init(USART1, &USART_InitStructure);

	USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);

	NVIC_InitStruct.NVIC_IRQChannel = USART1_IRQn;
	NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStruct);

	USART_Cmd(USART1,ENABLE);

	uart_send_string("BASLA!\r\n");

	while(1)
	{
		uart_send_string("Merhaba Dunya!\r\n");
		for(times = 0; times < 5000000; times++);
	}

	return 0;
}