# Storage

[中文]

## VFS

The UART implementation of VFS operators has been moved from vfs component to esp_driver_uart component.

APIs with esp_vfs_dev_uart_ prefix are all deprecated, replaced with new APIs in uart_vfs.h starting with uart_vfs_dev_ prefix. Specifically, - `esp_vfs_dev_uart_register` has been renamed to `uart_vfs_dev_register` - `esp_vfs_dev_uart_port_set_rx_line_endings` has been renamed to `uart_vfs_dev_port_set_rx_line_endings` - `esp_vfs_dev_uart_port_set_tx_line_endings` has been renamed to `uart_vfs_dev_port_set_tx_line_endings` - `esp_vfs_dev_uart_use_nonblocking` has been renamed to `uart_vfs_dev_use_nonblocking` - `esp_vfs_dev_uart_use_driver` has been renamed to `uart_vfs_dev_use_driver`

For compatibility, vfs component still registers esp_driver_uart as its private dependency. In other words, you do not need to modify the CMake file of an existing project.

### SPI Flash Driver

XMC-C series flash suspend support has been removed. According to feedback from the flash manufacturer, in some situations the XMC-C flash would require a 1ms interval between resume and next command. This is too long for a software request. Based on the above reason, in order to use suspend safely, we decide to remove flash suspend support from XMC-C series. But you can still force enable it via CONFIG_SPI_FLASH_FORCE_ENABLE_XMC_C_SUSPEND. If you have any questions, please contact espressif business support.

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