stm32303c_eval_eeprom.c File Reference

This file provides a set of functions needed to manage a M24LR64 or M24M01 I2C EEPROM memory, or a M95M01 SPI EEPROM memory. More...

#include "stm32303c_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.
static uint32_t	EEPROM_SPI_Init (void)
	Initializes peripherals used by the SPI EEPROM driver.
static uint32_t	EEPROM_SPI_ReadBuffer (uint8_t *pBuffer, uint16_t ReadAddr, uint32_t *NumByteToRead)
	Reads a block of data from the SPI EEPROM.
static uint32_t	EEPROM_SPI_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_SPI_WaitEepromStandbyState (void)
	Wait for EEPROM SPI 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
__IO uint8_t	EEPROMDataWrite
static EEPROM_DrvTypeDef *	EEPROM_SelectedDevice = 0
EEPROM_DrvTypeDef	EEPROM_I2C_Drv
EEPROM_DrvTypeDef	EEPROM_SPI_Drv

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Detailed Description

This file provides a set of functions needed to manage a M24LR64 or M24M01 I2C EEPROM memory, or a M95M01 SPI EEPROM memory.

Author:

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

• This driver is intended for STM32F30x families devices only.
• The I2C EEPROM memory (M24LR64) is available on separate daughter board ANT7-M24LR-A, which is provided with the STM32F303C EVAL board. To use this driver with M24LR64, you have to connect the ANT7-M24LR-A to CN1 connector of STM32F303C EVAL board. Jumper JP5 and JP6 needs to be set in I2C2 position. Jumper JP8 (E2P WC) needs to be set.

• The I2C EEPROM memory (M24M01) is mounted on the STM32F303C EVAL board. Jumper JP5 and JP6 needs to be set in I2C2_F position. Jumper JP8 (E2P WC) needs to be set.

• The SPI EEPROM memory (M95M01) is available directly on STM32F303C EVAL board. ===================================================================

It implements a high level communication layer for read and write from/to this memory. The needed STM32F30x hardware resources (I2C, SPI and GPIO) are defined in stm32303c_eval.h file, and the initialization is performed depending of EEPROMs in EEPROM_I2C_IO_Init() or EEPROM_SPI_IO_Init() functions declared in stm32303c_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() or EEPROM_SPI_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 M24M01 EEPROM | +---------------------------------------+-----------+-------------+ | STM32F30x I2C Pins | EEPROM | Pin | +---------------------------------------+-----------+-------------+ | . | NC | 1 | | . | E1(VDD) | 2 (3.3V) | | . | E2(GND) | 3 (0V) | | . | VSS | 4 (0V) | | EEPROM_I2C_SDA_PIN/ SDA | SDA | 5 | | EEPROM_I2C_SCL_PIN/ SCL | SCL | 6 | | . | /WC(VSS)| 7 (0V) | | . | VDD | 8 (3.3V) | +---------------------------------------+-----------+-------------+ +-----------------------------------------------------------------+ | Pin assignment for M24LR64 EEPROM | +---------------------------------------+-----------+-------------+ | STM32F30x I2C Pins | EEPROM | Pin | +---------------------------------------+-----------+-------------+ | . | E0(GND) | 1 (0V) | | . | AC0 | 2 | | . | AC1 | 3 | | . | VSS | 4 (0V) | | EEPROM_I2C_SDA_PIN/ SDA | SDA | 5 | | EEPROM_I2C_SCL_PIN/ SCL | SCL | 6 | | . | E1(GND) | 7 (0V) | | . | VDD | 8 (3.3V) | +---------------------------------------+-----------+-------------+

+-----------------------------------------------------------------+ | Pin assignment for M95M01 EEPROM | +---------------------------------------+-----------+-------------+ | STM32F30x SPI Pins | EEPROM | Pin | +---------------------------------------+-----------+-------------+ | EEPROM_CS_PIN | ChipSelect| 1 (/S) | | EEPROM_SPI_MISO_PIN/ MISO | DataOut | 2 (Q) | | EEPROM_SPI_WP_PIN | WR Protect| 3 (/W) | | . | GND | 4 (0 V) | | EEPROM_SPI_MOSI_PIN/ MOSI | DataIn | 5 (D) | | EEPROM_SPI_SCK_PIN/ SCLK | Clock | 6 (C) | | . | Hold | 7 (/HOLD)| | . | VCC | 8 (3.3 V)| +---------------------------------------+-----------+-------------+

Attention:

© COPYRIGHT(c) 2016 STMicroelectronics

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Definition in file stm32303c_eval_eeprom.c.