Method 2: After the SDK is started, it will generate a ZigbeeNetInfo.txt file in the directory specified by the .storage_path variable, which stores Zigbee network information such as Zigbee channel and PanID, as shown below:

$ cat zigbeeNetInfo.txt
Node ID:0
Pan ID:0x0044            # Zigbee network PanID
Radio Channel:15        # Zigbee channel
Radio Power:13
Extended Pan Id: 158F733C2F2325A6
EUI64: F1F2D3FEFFD76B08
Global Key: A2 42 0D D6 50 DD 3B C3 1E CD BD 82 8A 19 E4 92
Global FC:0xFFFFFFFF
Network Key: A5 DA 43 DE 24 A3 7D 54 7A 6B 32 F1 EF 01 E3 A6
Network FC:0x00005001
Network Sequence Number:0x00

Method 3: Find the channel information in the startup log.

[01-01 18:12:20:242 TUYA N][z3_slabs.c:147] nodeEuiStr = 588e81fffec70507.
[01-01 18:12:20:242 TUYA N][z3_slabs.c:148] nodeId = 0x0000.
[01-01 18:12:20:242 TUYA N][z3_slabs.c:149] panId = 0xbc4b.
[01-01 18:12:20:242 TUYA N][z3_slabs.c:150] channel = 0x0f.
[01-01 18:12:20:242 TUYA N][z3_slabs.c:151] ver = 1.0.8.
[01-01 18:12:20:242 TUYA N][z3_slabs.c:152] netStatus = 0x02.
[01-01 18:12:20:242 TUYA N][z3_slabs.c:153] extendedPanId: 5eaf522991cdd2e9
[01-01 18:12:20:242 TUYA N][z3_slabs.c:154] manufacturerId: 0x0001
[01-01 18:12:20:243 TUYA N][z3_slabs.c:160] netWorkKey: d7 1d 0f 07 ab 00 46 05 00 46 0b 01 00 30 fe ff