How to change the wifi MAC address?

Technical Discussion BW16
,
1

AT commands like ATW? / ATPM don’t work on my (brand-new, unflashed, unerased) BW16 board (connected to UART PB1 / PB2):

AT
argc=0
OK
[MEM] After do cmd, available heap 176544

ATS?
Unknown cmd:ATS?
[MEM] After do cmd, available heap 176544

ATW?
Unknown cmd:ATW?
[MEM] After do cmd, available heap 176544

ATPM=112233445566
Unknown cmd:ATPM=112233445566
[MEM] After do cmd, available heap 176544

Ameba_ATCMD_ESP is also no option as it does not support the ATPM command.
So what to do?

2

Hi @Joe ,

You may search online for AN0025 Realtek at command and try the WiFi AT command in it to see if it works for you.

May I know if you are using FreeRTOS SDK or Arduino SDK? Thank you

3

This is funny, according to AN0025 the command to change the MAC address is “ATWZ=write_mac[00e04c870102]”. According to AN0075 the command is “ATPM”. However - both commands do not work on my BW16:

ATPM=112233445566
Unknown cmd:ATPM=112233445566
[MEM] After do cmd, available heap 176544

ATWZ=write_mac[00e04c870102]
Unknown cmd:ATWZ=write_mac[00e04c870102]
[MEM] After do cmd, available heap 176544

ATWZ=read_mac
Unknown cmd:ATWZ=read_mac
[MEM] After do cmd, available heap 176544

My BW16 has
AT version: release/V4.18_P2.40.1
SDK version:amebad_v6.2C
Firmware version: release/V4.18_P6.3.1(Nov 17 2023-11:54:16)
Arch: RTL8720DX,NULL
Company: Ai-Thinker|B&T

I don’t understand your question concerning FreeRTOS or Arduino SDK. AT commands are simply sent to the board over serial connection to UART, you don’t need any SDK for this.

4

Please refer to this SDK repo for more info. You may rise a issue there.

Arduino do not have AT command build-in.