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/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name : readme.txt
* Author : MCD Application Team
* Version : V2.0.1
* Date : 06/13/2008
* Description : Description of the SPI M25P64_Flash Example.
********************************************************************************
* THE PRESENT FIRMWARE 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 FIRMWARE 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 example of how to use the SPI firmware library
and an associate SPI FLASH driver to communicate with an M25P64 FLASH.
The first step consist in reading the SPI Flash ID. A comparison between the ID
read from SPI flash and the expected one is done and a specific GPIO pin is set
in case of success otherwise this GPIO pin is reset.
Using this driver the program performs an erase of the sector to be accessed, a
write of a Tx_Buffer, defined in the main.c file, to the memory followed by a read
of the written data. Then data read from the memory stored in the Rx_Buffer are
compared with the expected values of the Tx_Buffer. The result of this comparison
is stored in the "TransferStatus1" variable.
A second erase of the same sector is done at the end, and a test is done to be
sure that all the data written there are erased further to the sector erase. All
the data location are read and checked with 0xFF value. The result of this test
is stored in "TransferStatus2" variable which is FAILED in case of error.
The SPI1 is configured as Master with an 8bits data size. A GPIO pin is used
as output push-pull to drive the SPI Flash chip select pin.
The FLASH_WriteAddress and the FLASH_ReadAddress where the program start the write
and the read operations are defined in the main.c file.
The system clock is set to 72MHz and SPI1 baudrate to 18 Mbit/s.
Directory contents
==================
platform_config.h Evaluation board specific configuration file
stm32f10x_conf.h Library Configuration file
stm32f10x_it.c Interrupt handlers
stm32f10x_it.h Header for stm32f10x_it.c
main.c Main program
spi_flash.c SPI FLASH driver
spi_flash.h Header for the spi_flash.c file
Hardware environment
====================
This example runs on STMicroelectronics STM3210B-EVAL and STM3210E-EVAL evaluation
boards and can be easily tailored to any other hardware.
To select the STMicroelectronics evaluation board used to run the example, uncomment
the corresponding line in platform_config.h and spi_flash.h files.
+ STM3210B-EVAL
- Use LD1 and LD2 leds connected respectively to PC.06 and PC.07 pins
+ STM3210E-EVAL
- Use LD1 and LD2 leds connected respectively to PF.06 and PF.07 pins
On the STMicroelectronics STM3210B-EVAL and STM3210E-EVAL evaluation boards, this
SPI Flash is already available and there is no need to any extra hardware connections.
If a different platform is used:
- Connect both SPI1 and SPI FLASH pins as following:
- Connect SPI1_NSS (PA.04) pin to SPI Flash chip select (pin1) and use the
STM3210B-EVAL hardware configuration defines.
- Connect SPI1_SCLK (PA.05) pin to SPI Flash serial clock (pin6).
- Connect SPI1_MISO (PA.06) pin to SPI Flash serial data output (pin2).
- Connect SPI1_MOSI (PA.07) pin to SPI Flash serial data input (pin5).
- Connect SPI Flash Write Protect (pin3) to Vdd
- Connect SPI Flash Hold (pin7) to Vdd
- Connect SPI Flash Vcc (pin8) to Vdd
- Connect SPI Flash Vss (pin4) to Vss
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 target memory
- Run the example
******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE******
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