STM32F072B-Discovery BSP User Manual: stm32f072b_discovery_eeprom.c File Reference

This file provides a set of functions needed to manage an I2C M24LR64 EEPROM memory.

Author:

MCD Application Team =================================================================== Notes:

• This driver is intended for stm32F0xx families devices only.
• The I2C EEPROM memory (M24LR64) is available on RF EEPROM daughter board (ANT7-M24LR-A) provided with the STM32F072B-Discovery board. To use this driver you have to connect the ANT7-M24LR-A to CN3 connector. ===================================================================

It implements a high level communication layer for read and write from/to this memory. The needed STM32F0xx hardware resources (I2C and GPIO) are defined in stm32f072b_discovery.h file, and the initialization is performed in EEPROM_IO_Init() function declared in stm32f072b_discovery.c file. You can easily tailor this driver to any other development board, by just adapting the defines for hardware resources and EEPROM_IO_Init() function.

Note:

In this driver, basic read and write functions (EEPROM_ReadBuffer() and EEPROM_WritePage()) use Polling mode to perform the data transfer to/from EEPROM memory.

+-----------------------------------------------------------------+ | Pin assignment for M24LR64 EEPROM | +---------------------------------------+-----------+-------------+ | STM32F0xx I2C Pins | EEPROM | Pin | +---------------------------------------+-----------+-------------+ | . | E0(GND) | 1 (0V) | | . | AC0 | 2 | | . | AC1 | 3 | | . | VSS | 4 (0V) | | EEPROM_I2Cx_SDA_PIN/ SDA | SDA | 5 | | EEPROM_I2Cx_SCL_PIN/ SCL | SCL | 6 | | . | E1(GND) | 7 (0V) | | . | VDD | 8 (3.3V) | +---------------------------------------+-----------+-------------+

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Definition in file stm32f072b_discovery_eeprom.c.