die UART

//----------------------------------------------------------------------
// Titel     : UART Beispiel für den STM32F407 
//----------------------------------------------------------------------
// Funktion  : sendet einen Zähler per UART
// Schaltung : UART RxD an PD8
//----------------------------------------------------------------------
// Hardware  : STM32F4 Discovery
// MCU       : STM32F407VGT6
// Takt      : 168 MHz
// Sprache   : ARM C
// Datum     : 21.01.2013
// Version   : 1
// Autor     : Alexander Huwaldt
//----------------------------------------------------------------------
#include <stddef.h>
#include <stdlib.h>
#include "hardware.h"
 
void initApplication()
{
	SysTick_Config(SystemCoreClock/100);
 
	// UART3 RxT an PortD8 9600,8,n,1
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD,ENABLE);
	GPIO_InitTypeDef  GPIO_InitStructure;
	GPIO_StructInit (&GPIO_InitStructure);
	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_8;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
	GPIO_Init(GPIOD, &GPIO_InitStructure);
	GPIO_PinAFConfig(GPIOD,GPIO_PinSource8,GPIO_AF_USART3);
 
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE);
	USART_InitTypeDef USART_InitStructure;
	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_Tx;
	USART_Init(USART3, &USART_InitStructure);	
	USART_Cmd(USART3, ENABLE);
 
}
 
int main(void)
{
	SystemInit();
	initApplication();
	uint8_t data=0;
	do{
 
		data++;
		USART_SendData(USART3,data);
		waitMs(10);
 
	} while (true);
	return 0;
}
 
extern "C" void SysTick_Handler(void)
{
	// Application SysTick
}

zurück zur Übersicht

die_uart_in_c_programmieren.txt · Zuletzt geändert: 2019/02/04 14:10 (Externe Bearbeitung)