readme.txt

STM32 CORTEX F10x系列的“DMA”模块的测试程序

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name          : readme.txt
* Author             : MCD Application Team
* Version            : V1.0
* Date               : 10/08/2007
* Description        : Description of the DMA 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.
*******************************************************************************/

Example description
===================
This example provides a description of how to use two DMA channels to transfer a 
data buffer from memory to I2C2 through I2C1.

I2C1 is set as the master transmitter and I2C2, as the slave receiver. DMA Channel5 is
configured to store the data received from I2C2 into the I2C2 Rx buffer (reception buffer).
DMA Channel6 is configured to transfer data from the I2C1 Tx buffer (transmission buffer) to
the I2C1 DR register for transmission to I2C2. After the Start condition and once the slave
address has been acknowledged, DMA is enabled on both I2C1 and I2C2. As soon as the
two I2C DMAEN bits are set in the I2C1_CR2 and I2C2_CR2 registers, the transmission of
the I2C1 Tx buffer is started by DMA Channel5 and at the same time the data received on
I2C2 is transferred by DMA Channel6 to the I2C2 Rx buffer. The transmitted buffer and the
received buffer are compared to check that all data have been correctly transferred.


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 I2C1 SCL pin (PB.06) to I2C2 SCL pin (PB.10)
 - Connect I2C1 SDA pin (PB.07) to I2C2 SDA pin	(PB.11)
 - Check that a pull-up resistor is connected on one I2C SDA pin
 - Check that a pull-up resistor is connected on one I2C SCL pin
      

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_dma.c
  + stm32f10x_rcc.c
  + stm32f10x_i2c.c
  + stm32f10x_nvic.c
  + stm32f10x_gpio.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******