You write to EEPROM, but after reset, data is garbage. Solution: You forgot to wait for the internal write cycle. EEPROMs take 3–5ms after a page write to actually store data. Use HAL_Delay(5) or poll the device by repeatedly sending a "Status" read until it ACKs.
Your EEPROM works, but an RTC or sensor on the same bus stops responding. Solution: The EEPROM driver may be holding the bus or not releasing it after an error. Look for a GitHub fork that includes HAL_I2C_DeInit() and re-init sequences in the error handler. x-cube-eeprom github
The library follows a standard workflow for data management: You write to EEPROM, but after reset, data is garbage
The package is typically organized into three main areas to help with integration: Use HAL_Delay(5) or poll the device by repeatedly
The library structure is typically divided into two main parts to ensure portability across different STM32 families:
Supports 8-bit, 16-bit, and 32-bit variables. Specific series like the STM32U5 support up to 96-bit variables. Internal Management:
You won’t find an official STMicroelectronics repository named x-cube-eeprom under the main STMicroelectronics GitHub organization. ST typically releases these expansions as part of a ZIP package or through the STM32CubeIDE’s package manager.