====== Advanced Networking Commands ======

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.

===== AT+TXPOWER – Set Maximum Transmit Power =====

**Query:**  
  <code>AT+TXPOWER=?</code>

**Set Power:**  
  <code>AT+TXPOWER=20</code>

**Response:**  
  <code>+TXPOWER:20dbm
OK</code>

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

===== AT+ACK_TO – Set ACK Timeout =====

**Query:**  
  <code>AT+ACK_TO=?</code>

**Set Timeout:**  
  <code>AT+ACK_TO=100</code>

**Response:**  
  <code>+ACK_TO:extra ack timeout=0us
OK</code>

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

===== AT+UNPAIR – Unassign STA Pairing =====

**Query:**  
  <code>AT+UNPAIR=?</code>

**Set:**  
  <code>AT+UNPAIR=f6:de:09:75:a3:61</code>

**Response:**  
  No response

**Notes:**  
  * `mac_addr` = MAC address of the paired device  

===== AT+APHIDE – Hide AP Information =====

**Query:**  
  <code>AT+APHIDE=?</code>

**Set:**  
  <code>AT+APHIDE=0</code> (visible)  
  <code>AT+APHIDE=1</code> (hidden)

**Response:**  
  <code>+APHIDE:1
OK</code>

===== AT+SCAN – Scan Surrounding APs =====

**Execute:**  
  <code>AT+SCAN</code>

**Response:**  
  <code>OK</code>

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

===== AT+CHANNEL – Set Channel =====

**Query:**  
  <code>AT+CHANNEL=?</code>

**Set Channel:**  
  <code>AT+CHANNEL=3</code>

**Response:**  
  <code>+CHANNEL:3
OK</code>

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

===== Notes =====

* 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.