擦除Flash

This chapter explains how to erase data from memory using sftool-gui. Two
modes are provided: full chip erase and area (sector) erase to meet different
development needs.

Caution

The erasure process will clear all data from the Flash memory. This operation is
irreversible!

Preparation

Before performing erase operations, ensure you have completed the following:

• Connection setup: For specific connection steps, refer to Firmware Flashing
  -Flashing Preparation, configure
  the correct serial parameters, and successfully connect the device.

• Data confirmation: Confirm there is no important unbacked data in Flash before
  erasing.

Configuration Options

You can choose one of the following erase modes as needed:

1. Full Erase:

• Removes all data on the Flash memory.

2. Region Erase:

• Operation: Manually enter the start address in hexadecimal.

• Range: Erases from the entered start address to the end of the Flash.

• Use cases: Commonly used to preserve the bootloader or Ftab sectors while
  deleting only the main application or subsequent data.

Performing Erase

1. Start task: After confirming the mode and address, click the Start Erase
   button.

2. Wait: During the erase, the UI will display Erasing....

• Note: Due to Flash hardware characteristics, erase operations (especially mass
  erase) may take a long time. Do not perform other operations or forcibly
  disconnect during the process to avoid hardware hangs or logical corruption.

3. Completion: When the Start Erase button becomes clickable again and the log
   panel shows success, the erase task is complete.