/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name          : readme.txt
* Author             : MCD Application Team
* Date First Issued  : 05/21/2007
* Description        : Description of the USART Example 11.
********************************************************************************
* History:
* 05/21/2007: V0.3
********************************************************************************
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

Example description
===================
This example provides a description of how  to use the USART in multi-processor mode.
First, the USART1 and USART2 address are set to 0x1 and 0x2. The USART1 send 
continusouly the character 0x33 to the USART2. The USART2 toggle a LED connected 
to the PC.06 while receiving 0x33.
When a falling edge is applied on EXTI line9, an interrupt is generated and in the 
EXTI9_5_IRQHandler routine, the USART2 is entred in mute mode and still in this mode
(no LED toggling) until a rising edge is applied on EXTI Line 0 occured. In this interrupt
routine the USART1 send the character of address mark (0x102) to wakeup USART2. 
The LED restart toggling.

USART1 and USART2 configured as follow:
  - BaudRate = 9600 baud  
  - Word Length = 9 Bits
  - One Stop Bit
  - No parity
  - Hardware flow control disabled (RTS and CTS signals)
  - Receive and transmit enabled
  - USART Clock disabled
  - USART CPOL: Clock is active low
  - USART CPHA: Data is captured on the second edge 
  - USART LastBit: The clock pulse of the last data bit is not output to 
                     the SCLK pin

Directory contents
==================
stm32f10x_conf.h  Library Configuration file
stm32f10x_it.h    Interrupt handlers header file
stm32f10x_it.c    Interrupt handlers
main.c            Main program


Hardware environment
====================
 - Connect USART1_Tx(PA.09) to USART2_Rx(PD.05) and USART1_Rx(PA.10) to USART2_Tx(PD.06)
   (in the STM32F10x-EVAL board, connect a null-modem female/female RS232 cable between
   CN5 and CN6).
 - Connect four led to pin PC.06, PC.07, PC.08 and PC.09 (LD1, LD2, LD3 and  LD4
   on STM32F10x-EVAL board). 
 - Connect a push-button to pin PB.09 (EXTI Line9) (Key push-button on STM32F10x-EVAL board).  
 - Connect a push-button to pin PA.00 (EXTI Line0) (Wakeup push-button on STM32F10x-EVAL board).
   
How to use it
=============
In order to make the program work, you must do the following :
- Create a project and setup all your toolchain's start-up files
- Compile the directory content files and required Library files :
  + stm32f10x_lib.c
  + stm32f10x_gpio.c
  + stm32f10x_rcc.c
  + stm32f10x_usart.c
  + stm32f10x_nvic.c
  + stm32f10x_flash.c
  + stm32f10x_exti.c
  
- Link all compiled files and load your image into either RAM or Flash
- Run the example

******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE******