Wiki source code of Why can't the password access AT command after upgrade(-NB)?

Version 2.1 by Mengting Qiu on 2024/08/27 15:52

author	version	line-number	content
		1	{{box cssClass="floatinginfobox" title="Contents"}}
		2	{{toc/}}
		3	{{/box}}
		4
		5
		6
		7
		8	Due to the addition of the password retention function(AT+FDR1) in the new version, the password address has changed, and when the user upgrades the firmware before V1.2.0 (including v1.2.0) to the version after V1.2.1(including V1.2.1), the original password will not be used. The user can choose to erase all contents before upgrading the firmware and then burn the new version of the firmware. The user can still use the original password, but this method will restore all configurations to the default firmware Settings.
		9
		10
		11	The password address for firmware prior to v1.2.0(including v1.2.0): 0x08019000
		12
		13	The password address for firmware after v1.2.1(including V1.2.1): 0x08025D00
		14
		15
		16	So users can also choose to query the password using the STM32 Cube after upgrading the firmware.
		17
		18	* After the firmware upgrade is complete, switch back to the FLASH and reset the node to run the new firmware once.
		19	* Then place the switch at the ISP and connect to the STM32CubeProgrammer (same as when burning the firmware).
		20	* Click "Device memory", enter 0x08025D00 in "Address", and click "Read"
		21
		22	[[image:image-20240826160842-1.png\|\|height="460" width="1247"]]
		23
		24
		25
		26
		27
		28
		29
		30
		31
		32
		33
		34
		35