stm32091c_eval_eeprom.c File Reference

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

#include "stm32091c_eval_eeprom.h"

Go to the source code of this file.

Functions
static uint32_t	EEPROM_I2C_Init (void)
	Initializes peripherals used by the I2C EEPROM driver.
static uint32_t	EEPROM_I2C_ReadBuffer (uint8_t *pBuffer, uint16_t ReadAddr, uint32_t *NumByteToRead)
	Reads a block of data from the I2C EEPROM.
static uint32_t	EEPROM_I2C_WritePage (uint8_t *pBuffer, uint16_t WriteAddr, uint32_t *NumByteToWrite)
	Writes more than one byte to the EEPROM with a single WRITE cycle.
static uint32_t	EEPROM_I2C_WaitEepromStandbyState (void)
	Wait for EEPROM I2C Standby state.
uint32_t	BSP_EEPROM_Init (void)
	Initializes peripherals used by the I2C EEPROM driver.
uint32_t	BSP_EEPROM_ReadBuffer (uint8_t *pBuffer, uint16_t ReadAddr, uint32_t *NumByteToRead)
	Reads a block of data from the EEPROM device selected.
uint32_t	BSP_EEPROM_WriteBuffer (uint8_t *pBuffer, uint16_t WriteAddr, uint32_t NumByteToWrite)
	Writes buffer of data to the EEPROM device selected.
__weak void	BSP_EEPROM_TIMEOUT_UserCallback (void)
	Basic management of the timeout situation.
Variables
__IO uint16_t	EEPROMAddress = 0
__IO uint16_t	EEPROMPageSize = 0
__IO uint16_t	EEPROMDataRead
__IO uint8_t	EEPROMDataWrite
static EEPROM_DrvTypeDef *	EEPROM_SelectedDevice = 0
EEPROM_DrvTypeDef	EEPROM_I2C_Drv

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Detailed Description

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

Author:

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

• This driver is intended for STM32F0xx families devices only.
• The I2C EEPROM memory (M24LR64) is available on separate daughter board ANT7-M24LR-A, which is provided with the STM32091C EVAL board. To use this driver with M24LR64, you have to connect the ANT7-M24LR-A to CN2 connector of STM32091C EVAL board. ===================================================================

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 stm32091c_eval.h file, and the initialization is performed depending of EEPROMs in EEPROM_IO_Init() function declared in stm32091c_eval.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 (BSP_EEPROM_ReadBuffer() and BSP_EEPROM_WriteBuffer()) use Polling mode to perform the data transfer to/from EEPROM memories.

+-----------------------------------------------------------------+ | Pin assignment for M24LR64 EEPROM | +---------------------------------------+-----------+-------------+ | STM32F0xx I2C Pins | EEPROM | Pin | +---------------------------------------+-----------+-------------+ | EEPROM_I2C_SDA_PIN (PB7)/ SDA | SDA | 1 | | . | NC | 2 | | EEPROM_I2C_SCL_PIN/ SCL | SCL | 3 | | EX_RESET(PD7) | RESET | 4 | | . | VDD | 5 | | . | NC | 6 | | . | GND | 7 | | . | NC | 8 | +---------------------------------------+-----------+-------------+

Attention:

© COPYRIGHT(c) 2016 STMicroelectronics

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Definition in file stm32091c_eval_eeprom.c.