IPDL - 13: 6LoWPAN Protocol Demonstration - Revision history

CogWikiEditor: /* 20. Flash the Second XIAO */

2026-09-26T07:28:34Z

20. Flash the Second XIAO

← Older revision		Revision as of 07:28, 26 September 2026
Line 349:		Line 349:

	At this point both boards should have the same OpenThread-capable firmware.		At this point both boards should have the same OpenThread-capable firmware.

			== 21. Enable Serial Monitor in VS Code ==

			After flashing the OpenThread firmware, open '''Visual Studio Code'''.

			Open the '''nRF Connect for VS Code''' extension and select '''nRF Terminal''' from the VS Code Activity Bar.

			Click the '''+''' button to create a new serial terminal.

			Select the COM port corresponding to the XIAO board.

			For example:

			<code> COM26 </code>

			Set the baud rate to:

			<code> 115200 </code>

			Press '''Enter'''.

			The OpenThread CLI should now appear in the terminal.

			For the second XIAO, open another terminal and select its corresponding COM port, for example:

			<code> COM27 </code>

			Use:

			<code> 115200 </code>

			You can now enter OpenThread commands directly in the terminal, such as:

			<code> state </code>

			or:

			<code> ipaddr </code>

	= XIAO nRF52840 — Thread + 6LoWPAN + UDP : Now Communication Time=		= XIAO nRF52840 — Thread + 6LoWPAN + UDP : Now Communication Time=

2026-09-26T07:24:32Z

16. Full two-way UDP setup

← Older revision		Revision as of 07:24, 26 September 2026
Line 1,035:		Line 1,035:
	udp send CHILD_IP 12345 Hello_Child		udp send CHILD_IP 12345 Hello_Child
	</code>		</code>

			[[File:Lowpan-comm-xiao.png\|center\|800px\|'''Sample 6LoWPAN Communication Using XIAO nRF52840''']]

	== 17. Useful diagnostic commands ==		== 17. Useful diagnostic commands ==

2026-09-26T07:21:41Z

14. Reverse direction — Leader → Child

← Older revision		Revision as of 07:21, 26 September 2026
Line 895:		Line 895:

	Now you have '''bidirectional UDP''':		Now you have '''bidirectional UDP''':
			[[File:Ipdl-13-child-to-leader.png\|center\|500px\|'''Child-to-Leader Communication''']]
	~~<code>~~		[[File:ipdl-13-leader-to-child.png\|center\|500px\|'''Leader-to-Child Communication''']]
	~~CHILD ────────────────► LEADER~~
	~~Hello_Leader~~

	~~CHILD ◄──────────────── LEADER~~
	~~Hello_Child~~
	~~</code>~~

	== 15. The complete cheat sheet ==		== 15. The complete cheat sheet ==

2026-09-26T06:37:01Z

4. What is Thread?

@@ Line 55: / Line 55: @@
 '''Thread''' is a low-power, IPv6-based mesh networking protocol designed for IoT devices.
 Thread uses '''IEEE 802.15.4''' at the wireless link layer and provides an IPv6-based networking architecture.
 In this project, Thread provides the network layer between the two XIAO boards.
 Thread therefore makes it possible for the XIAO boards to communicate using IPv6 addresses while the actual wireless transmission takes place through the nRF52840's IEEE 802.15.4 radio.

2026-09-26T06:35:00Z

3. What is 6LoWPAN?

← Older revision		Revision as of 06:35, 26 September 2026
Line 41:		Line 41:
	IEEE 802.15.4 provides the low-power wireless radio/link layer, while 6LoWPAN provides mechanisms needed to carry IPv6 traffic over that constrained link.		IEEE 802.15.4 provides the low-power wireless radio/link layer, while 6LoWPAN provides mechanisms needed to carry IPv6 traffic over that constrained link.

	[[File:Ipdl-13-~~thread~~-protocol.png\|center\|800px]]		[[File:Ipdl-13-lowpan-protocol.png\|center\|800px]]

	6LoWPAN is particularly useful for:		6LoWPAN is particularly useful for:

2026-09-26T06:32:42Z

3. What is 6LoWPAN?

← Older revision		Revision as of 06:32, 26 September 2026
Line 41:		Line 41:
	IEEE 802.15.4 provides the low-power wireless radio/link layer, while 6LoWPAN provides mechanisms needed to carry IPv6 traffic over that constrained link.		IEEE 802.15.4 provides the low-power wireless radio/link layer, while 6LoWPAN provides mechanisms needed to carry IPv6 traffic over that constrained link.

	~~The important idea is~~:		[[File:Ipdl-13-thread-protocol.png\|center\|800px]]

	~~<code>~~
	~~IPv6~~
	↓
	~~6LoWPAN~~
	↓
	~~IEEE 802~~.~~15.4~~
	↓
	~~Wireless Radio~~
	~~</code>~~

	6LoWPAN is particularly useful for:		6LoWPAN is particularly useful for:

2026-09-26T06:15:34Z

2026-09-26T06:14:41Z

XIAO nRF52840 — Thread + 6LoWPAN + UDP

← Older revision		Revision as of 06:14, 26 September 2026
Line 1:		Line 1:
	= XIAO nRF52840 — Thread + 6LoWPAN + UDP =		= XIAO nRF52840 — Thread + 6LoWPAN + UDP : Now Communication Time=

	Assume:		Assume:

2026-09-26T06:11:02Z

9. Verify Leader ↔ Child connectivity

← Older revision		Revision as of 06:11, 26 September 2026
Line 403:		Line 403:

	That proves: Leader communicates with the Child through IPv6 over the Thread/6LoWPAN network.		That proves: Leader communicates with the Child through IPv6 over the Thread/6LoWPAN network.

	~~<code>~~
	[[File:Ipdl-13-lowpan-flow.png\|center\|800px\|'''6LoWPAN Communication Flow''']]		[[File:Ipdl-13-lowpan-flow.png\|center\|800px\|'''6LoWPAN Communication Flow''']]
	~~</code>~~

	== 10. Now configure UDP ==		== 10. Now configure UDP ==

2026-09-26T06:10:44Z

9. Verify Leader ↔ Child connectivity

← Older revision		Revision as of 06:10, 26 September 2026
Line 402:		Line 402:
	</code>		</code>

	That proves:		That proves: Leader communicates with the Child through IPv6 over the Thread/6LoWPAN network.

	<code>		<code>
	~~Leader~~		[[File:Ipdl-13-lowpan-flow.png\|center\|800px\|'''6LoWPAN Communication Flow''']]
	│
	~~│ IPv6~~
	│
	▼
	~~Thread /~~ 6LoWPAN
	│
	▼
	~~Child~~
	</code>		</code>