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432	432
433	433	[[image:image-20240430162820-5.png||height="218" width="532"]]
434	434
435		-=== BAT- Battery information ===
	435	+==== 3.2.1.2 BAT- Battery information ====
436	436
437	437	These two bytes of BAT include the battery state and the actual voltage.
438	438
	439	+[[image:image-20240430163600-8.png||height="50" width="1141"]]
	440	+
439	439	**Ex**：0X0BBE= 3006 mv
440	440
	443	+==== ====
441	441
442		-=== total_packages ===
	445	+==== 3.2.1.3 total_packages ====
443	443
444		-This byte represents the total number of packets for the image fetched this time
	447	+This byte represents the total number of packets for the image fetched this time.
445	445
	449	+[[image:image-20240430163626-9.png||height="47" width="1116"]]
	450	+
	451	+==== ====
	452	+
	453	+==== 3.2.1.4 subcontracting_count ====
	454	+
	455	+This byte represents the data number of the image packet retrieved
	456	+
	457	+[[image:image-20240430163738-10.png||height="44" width="1117"]]
	458	+
	459	+
	460	+==== 3.2.1.5 Image_date ====
	461	+
	462	+Apart from the eight bytes mentioned above, the next 200 bytes are all image data.
	463	+
	464	+Example the first packet：663095C00BBE1000FFD8FFE000104A46494600010101004800480000FFDB0043001B12141714111B1716171E1C1B2028422B28252528513A3D3042605565645F555D5B6A7899816A7190735B5D85B586909EA3ABADAB6780BCC9BAA6C799A8ABA4FFDB0043011C1E1E2823284E2B2B4EA46E5D6EA4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4FFC0000B0800F0014001012200FFC4001F00000105010101010101000000000000000001020304050607
	465	+
	466	+Image_date=FFD8FFE000104A46494600010101004800480000FFDB0043001B12141714111B1716171E1C1B2028422B28252528513A3D3042605565645F555D5B6A7899816A7190735B5D85B586909EA3ABADAB6780BCC9BAA6C799A8ABA4FFDB0043011C1E1E2823284E2B2B4EA46E5D6EA4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4FFC0000B0800F0014001012200FFC4001F00000105010101010101000000000000000001020304050607
	467	+
	468	+
	469	+==== 3.2.1.6 Combined image ====
	470	+
	471	+Once all the data has been uploaded to the TTN platform, the subsequent step involves concatenating each packet in sequential order and saving it into a new TXT file. It is important to note that the first 8 bytes of each packet should be removed before concatenation.
	472	+
	473	+When you combine all the packets, you need to convert the data inside to binary. Here the conversion is demonstrated using the [[WinHex>>http://www.x-ways.net/winhex/index-m.html]] software.
	474	+
	475	+
	476	+
	477	+
446	446