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STM32l152 USART configuration

Question asked by deshpande.vedhas on Dec 19, 2012
Latest reply on Dec 21, 2012 by Clive One
Hello pals i am new to the stm32 programming, i am trying to configure usart via irq handler, can someone help?

#include <stm32l1xx.h>
#include "stm32l1xx_usart.h"
#include "STM32_Init.h"
void SendByte (int byte);
int main (void)
   return 0;
void USART1_IRQHandler (void)
    volatile unsigned int vsr;
    int ByteSent;
    vsr= USART1->SR;
    if (vsr& USART_FLAG_RXNE)                   // did we interrupt on the read
       // clear the interrupt since we are processing it
        USART1->SR &= ~(USART_FLAG_RXNE); 
        ByteSent = (USART1->DR & 0x1FF);
void SendByte (int byte)
    //Wait for the uart to finish sending the byte.
     while (!(USART1->SR & USART_FLAG_TXE));
    USART1->DR = (byte & 0xFF);

STM32_Init.c(32): error:  #5: cannot open source input file "STM32_Reg.h": No such file or directory