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Log(char*str){
      HAL_UART_Transmit( &huart3, (uint8_t *)str,100, HAL_MAX_DELAY );
      HAL_UART_Transmit( &huart3, (uint8_t *)"\r\n", 2, HAL_MAX_DELAY );
}

uint8_t tmpStr100[100];
Log(float degisken){
memset(tmpStr100,0,sizeof(tmpStr100));
sprintf((uint8_t *)tmpStr100, "%05.1f", degisken);
HAL_UART_Transmit( &huart3, (uint8_t *)tmpStr100,100, HAL_MAX_DELAY );

}

#include "string.h"
#include "stdio.h"
#include "stdarg.h"
#include "stdlib.h"

void UART_Printf(const char* fmt, ...) {
    char buff[256];
    va_list args;
    va_start(args, fmt);
    vsnprintf(buff, sizeof(buff), fmt, args);
    HAL_UART_Transmit(&huart2, (uint8_t*)buff, strlen(buff), HAL_MAX_DELAY);
    va_end(args);
}