readme.txt

STM32 cortex m－3 的 spi驱动程序！ 可以直接使用！

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name          : readme.txt
* Author             : MCD Application Team
* Version            : V1.0
* Date               : 10/08/2007
* Description        : Description of the SPI Example2.
********************************************************************************
* 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.
*******************************************************************************/
本例展示了如何实现2个SPI之间的在单工（simplex）模式下通信，通过在主端使用TxE中断，从端使用RxNE中断，实现把数据由主向从发送。

在本例程中，设置SPI1和SPI2为8bit数据帧，9Mbit/s传输速率，设置SPI1为主发送端，SPI2为从接收端。授权SPI1的发送缓存为空中断（Tx buffer empty interrupt）和SPI2的接收缓存非空中断（buffer not empty interrupt）。

传输开始，在每一个SPI1的TxE中断中，程序把SPI1_Buffer_Tx的数据发送出去，在SPI2的RxNE中断中把数据存放在SPI2_Buffer_Rx。

在STM3210B-LK1上，待传输完成后，通过比较判断传输是否正确。如果正确，则亮起LED1（LD4），否则亮起LED2（LD3）。

Example description
===================
This example provides a description of how to set a communication between two
SPIs in simplex mode and performs a data buffer transfer from Master to Slave 
using TxE interrupt for master and RxNE interrupt for slave.
Both SPIs are configured with 8bit data frame and a 9Mbit/s communication speed.
SPI1 is configured to be a master transmitter and SPI2 as slave receiver. 
The Tx buffer empty interrupt is enabled for the master and the RxNE buffer not
empty is enabled for the slave.
Once both SPIs are enabled, first TxE interrupt is generated for the master
and in its interrupt routine the first data is sent from SPI1_Buffer_Tx. Once 
this data is received by the slave a RxNE interrupt is generated and in the 
routine this data is stored in the SPI2_Buffer_Rx.
The same procedure is followed for the remaining SPI1_Buffer_Tx data.
Once all data buffer are received by the slave the TxE interrupt is disabled.
A comparison is done and TransferStatus gives the data transfer status where 
it is PASSED if transmitted and received data are the same otherwise it is FAILED.


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


Hardware environment
====================
 - Connect SPI1 SCK pin (PA.05) to SPI2 SCK pin (PB.13)
 - Connect SPI1 MOSI pin (PA.07) to SPI2 MISO pin (PB.14)


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_spi.c
  + stm32f10x_rcc.c
  + stm32f10x_gpio.c
  + stm32f10x_nvic.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******