STM3210C_EVAL BSP User Manual: stm3210c_eval_eeprom.c File Reference

STM3210C_EVAL BSP

stm3210c_eval_eeprom.c File Reference

This file provides a set of functions needed to manage a M24C64 I2C EEPROM memory. More...

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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 EEPROM device selected.
void BSP_EEPROM_SelectDevice (uint8_t DeviceID)
 Select the EEPROM device to communicate.
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 = 0
__IO uint8_t EEPROMDataWrite = 0
static EEPROM_DrvTypeDefEEPROM_SelectedDevice = 0
EEPROM_DrvTypeDef EEPROM_I2C_Drv

Detailed Description

This file provides a set of functions needed to manage a M24C64 I2C EEPROM memory.

Author:
MCD Application Team
Version:
V7.0.0
Date:
14-April-2017 =================================================================== Notes:
  • This driver is intended for STM32F1xx families devices only.
  • The I2C EEPROM memory (M24CXX) is available directly on STM3210C EVAL board. ===================================================================

It implements a high level communication layer for read and write from/to this memory. The needed STM32F10x hardware resources (I2C and GPIO) are defined in stm3210c_eval.h file, and the initialization is performed in EEPROM_I2C_IO_Init() functions declared in stm3210c_eval.c file. You can easily tailor this driver to any other development board, by just adapting the defines for hardware resources and EEPROM_I2C_IO_Init() functions.

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 M24CXX EEPROM | +---------------------------------------+-----------+-------------+ | STM32F1xx I2C Pins | EEPROM | Pin | +---------------------------------------+-----------+-------------+ | EEPROM_I2C_SDA_PIN/ SDA | SDA | 5 | | EEPROM_I2C_SCL_PIN/ SCL | SCL | 6 | | . | VDD | 7 (3.3V) | | . | GND | 8 (0 V) | +---------------------------------------+-----------+-------------+
Attention:

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Definition in file stm3210c_eval_eeprom.c.

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