This page documents AT commands for advanced networking features in HaLow firmware 2.x modules, including TX power, ACK timeout, unpairing, AP visibility, scanning, and channel selection.

Query:

AT+TXPOWER=?

Set Power:

AT+TXPOWER=20

Response:

+TXPOWER:20dbm
OK

Notes:

• Range: 1~20 dBm, step 1
• Values outside range default to 20 dBm

Query:

AT+ACK_TO=?

Set Timeout:

AT+ACK_TO=100

Response:

+ACK_TO:extra ack timeout=0us
OK

Notes:

• Value in microseconds
• Needed only for long-range links (>1 km)
• Formula: 10 × (distance in km − 1)

Query:

AT+UNPAIR=?

Set:

AT+UNPAIR=f6:de:09:75:a3:61

Response: No response

Notes:

• `mac_addr` = MAC address of the paired device

Query:

AT+APHIDE=?

Set:

AT+APHIDE=0

(visible)

<code>AT+APHIDE=1</code> (hidden)

Response:

+APHIDE:1
OK

Execute:

AT+SCAN

Response:

OK

Notes:

• Only works in STA mode
• Use `AT+SYSDBG=umac,1` to print scanned AP details

Query:

AT+CHANNEL=?

Set Channel:

AT+CHANNEL=3

Response:

+CHANNEL:3
OK

Notes:

• Channel index ≥1 and ≤ number of channels in `CHAN_LIST`
• Typically configured on the AP side

* Use these commands after basic networking parameters are set (SSID, key, mode, channel list). * Adjusting TX power and ACK timeout is useful for optimizing range and reliability. * AP visibility and scan functions help in network discovery and troubleshooting.