readme.txt

STM32是以Cortex-M3为核的处理器

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name          : readme.txt
* Author             : MCD Application Team
* Version            : V1.0
* Date               : 10/08/2007
* Description        : Description of the USART Example6.
********************************************************************************
* 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 basic communication between USART1 and USART2 using DMA 
capability, flags and interrupts.

First, the DMA transfers data from TxBuffer2 buffer to USART2 Transmit data register,
then this data is sent to USART1. Data received by USART1 is transferred using 
RXNE flag and stored in RxBuffer1 then compared with the sent ones and
the result of this comparison is stored in the "TransferStatus1" variable.
 
Then, the DMA transfers data from TxBuffer1 buffer to USART1 Transmit data register,
then this data is sent to USART2. Data received by USART2 is transferred using 
Receive interrupt and stored in RxBuffer2 then compared with the sent ones and 
the result of this comparison is stored in the "TransferStatus2" variable. 

USART1 and USART2 configured as follow:
  - BaudRate = 230400 baud  
  - Word Length = 8 Bits
  - One Stop Bit
  - No parity
  - Hardware flow control disabled (RTS and CTS signals)
  - Receive and transmit enabled
       
        
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 STM3210B-EVAL board, connect a null-modem female/female RS232 cable between
 CN5 and CN6).
  
  
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_dma.c
  + stm32f10x_flash.c
    
- Link all compiled files and load your image into either RAM or Flash
- Run the example

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