Erase 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

Erasing will clear data on the Flash. This operation cannot be undone!

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.