EEPROM

Refactored Arduino library from JChristensen to STM32 LL(Low-Layer) C library.

Features

• Predefined commonly used EEPROM chip types for easier configuration.
• Fast read and write operations
• Auto memory paging resolving
• No HAL dependencies

Add as CPM project dependency

How to add CPM to the project, check the link

CPMAddPackage(
        NAME EEPROM
        GITHUB_REPOSITORY ximtech/EEPROM
        GIT_TAG origin/main)

Project configuration

1. Start project with STM32CubeMX:
   • I2C configuration
2. Select: Project Manager -> Advanced Settings -> I2C -> LL
3. Generate Code
4. Add sources to project:

add_subdirectory(${STM32_CORE_SOURCE_DIR}/I2C/Polling)  # add I2C to project

include_directories(${EEPROM_DIRECTORY})   # source directories
file(GLOB_RECURSE SOURCES ${EEPROM_SOURCES})    # source files

3. Then Build -> Clean -> Rebuild Project

Wiring

• 

Usage

Data write and read from EEPROM

#include "EEPROM_I2C.h"

#define EEPROM_I2C_ADDRESS 0xA0
#define EEPROM_VALUE_ADDRESS 0
#define VALUE_TO_SAVE 55

int main() {
    
    EEPROM_I2C eeprom = initByTypeEEPROM(I2C1, AT24C04, EEPROM_I2C_ADDRESS);
    I2CStatus status = beginEEPROM(eeprom);
    if (status != I2C_OK) {
        return -1;  // failed to start, check status for more info
    }
    
    EEPROMStatus eepromStatus = writeByteEEPROM(eeprom, EEPROM_VALUE_ADDRESS, VALUE_TO_SAVE);
    uint8_t value = readByteEEPROM(eeprom, EEPROM_VALUE_ADDRESS);
    printf("%d\n", value);
}