eeprom.rar_eeprom i2c_stm32f_stm32f eeprom_stm32f i2c

/******************** (C) COPYRIGHT 2007 STMicroelectronics ******************** * File Name : readme.txt * Author : MCD Application Team * Date First Issued : 05/21/2007 * Description : Description of the I2C Example5. ******************************************************************************** * 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 basic example of how to use the I2C software library and an associate I2C EEPROM driver to communicate with an M24C08 EEPROM. Using this driver the program performs a write of a Tx1_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 Rx1_Buffer is compared with the expected values of the Tx1_Buffer. The result of this comparison is stored in the "TransferStatus1" variable. A second write of Tx2_Buffer is performed, followed by a read of the written data. Then data read from the memory stored in the Rx2_Buffer is compared with the expected values of the Tx2_Buffer. The result of this comparison is stored in the "TransferStatus2" variable. Both buffers are written successively in the same EEPROM block. A last read, from EEPROM_ReadAddress1 address, of all written data is done, and the hole buffer is stored in Rx_Buffer. This buffer can be checked to contain the hole sentence which is composed of Tx1_Buffer and Tx2_Buffer. I2C1 is configured in Master transmitter during write operation and in Master receiver during read operation from I2C EEPROM. The Own I2C address is defined to 0xA0 in the I2c_ee.c file. The speed is set to the maximum frequency of 400kHz. This value is defined in the I2c_ee.c file, which could be in the range of 0 to 400KHZ. One I2C EEPROM Block address where the program will write the buffer have to be selected from the four address available and defined in the I2c_ee.c file. The EEPROM address where the program start the write and the read operations is defined in the main.c file. Directory contents ================== stm32f10x_conf.h Library Configuration file stm32f10x_it.c Interrupt handlers stm32f10x_it.h Interrupt handlers header file main.c Main program i2c_ee.c I2C EEPROM driver i2c_ee.h Header for the i2c_ee.c file Hardware environment ==================== - Connect I2C1 SCL pin (PB.06) to I2C EEPROM SCL (pin6) - Connect I2C1 SDA pin (PB.07) to I2C EEPROM SDA (pin5) - 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 - Connect I2C EEPROM Vcc (pin8) to Vdd - Connect I2C EEPROM 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_i2c.c + stm32f10x_rcc.c + stm32f10x_nvic.c + stm32f10x_gpio.c + stm32f10x_flash.c - Link all compiled files and load your image in FLASH - Run the example ******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE******