Wiki source code of LTS5 LoRa HMI Touch Screen

Version 55.1 by Edwin Chen on 2024/10/09 10:25

version	line-number	content
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	2	[[image:image-20240915231842-1.png]]
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	5	(% _mstvisible="1" %)
	6	(% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)Table of Contents：
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	8	{{toc/}}
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	17	= 1. Introduction =
	18
4.1	19	== 1.1 What is LTS5 LoRa HMI touch screen ==
2.1	20
4.1	21	LTS5 is a (% style="color:blue" %)LoRa / LoRaWAN HMI Touch Screen(%%) designed for display purpose of IoT project. It have a 5.0" HMI touch screen, and support WiFi, Bluetooch, LoRa wireless protocol.
2.1	22
4.1	23	LTS5 is an Open Source software project. The MCU is ESP32 and Dragino LA66 LoRa module. There are lots of development source for ESP32 which can greatly reduce the development time.
2.1	24
4.2	25	The HMI touch screen of LTS5 supports drap & drop design. Developer can use SquareLine to easily customize the display UI for different application.
2.1	26
4.2	27	LTS5 use LA66 LoRa module, this module can be program to support private LoRa protocol or LoRaWAN protocol.
2.1	28
4.2	29
2.1	30	== 1.2 Features ==
	31
55.1	32	* ESP32-WROOM MCU: 8MB RAM & 16MB ROM
	33	* Dragino LA66 LoRa Module
4.2	34	* Support Private LoRa protocol or LoRaWAN protocol
	35	* Support WiFi & BLE wireless protocol
	36	* 5.0" HMI touch screen
4.6	37	* Support LVGL case. SquareLine program.
4.2	38	* Support RS485 Interface
	39	* Open Source Project
2.1	40	* Wall Attachable.
4.2	41	* 5V DC power
2.1	42	* IP Rating: IP52
	43
	44	== 1.3 Specification ==
	45
4.9	46	LoRa:
	47
55.1	48	* Frequency Range: 870 MHz ~~ 960 MHz
	49	* TCXO crystal to ensure RF performance on low temperature
	50	* Maximum Power +22 dBm constant RF output
	51	* High sensitivity: -148 dBm
	52	* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
	53	* LoRa Rx current: <9 mA
4.9	54
4.7	55	WiFi:
	56
	57	* 802.11b/g/n
	58	* Up to 150 Mbps data rate in 802.11n mode
	59	* Support A-MPDU and A-MSDU aggregation
	60	* zero point four μ S protection interval
	61	* Working channel center frequency range: 2412~~2484 MHz
	62
	63	Bluetooth:
	64
	65	* Bluetooth V4.2 BR/EDR and Bluetooth LE standard
	66	* Class-1, Class-2, and Class-3 transmitters.
	67	* AFH
	68	* CVSD and SBC
	69
4.2	70	Display:
2.1	71
4.9	72	* 5.0 Inch , 800 x 480
	73	* IPS Capacitive Touch SCreen
4.11	74	* RGB color.
	75	* Display Area: 120.7*75.80 mm
2.1	76
	77	== 1.4 Power Consumption ==
	78
4.5	79	* External 5V DC power adapter
2.1	80
	81	== 1.5 Storage & Operation Temperature ==
	82
4.10	83	* Operation Temperature: -20 ~~ 70°C (No Dew)
	84	* Storage Temperature: -30 ~~ 70°C (No Dew)
2.1	85
	86	== 1.6 Applications ==
	87
	88	* Smart Buildings & Home Automation
	89	* Logistics and Supply Chain Management
	90	* Smart Metering
	91	* Smart Agriculture
	92	* Smart Cities
	93	* Smart Factory
	94
51.2	95	= 2. Getting Started with Hello World =
2.1	96
5.1	97	== 2.1 About this demo ==
2.1	98
51.2	99	In this Getting Started Example, we will show how to design a simple Display UI and upload it to LTS5. This UI has a button , when user click the button. The Web UI will jump to a new page.
2.1	100
5.1	101	== 2.2 Install Software Running Environment ==
2.1	102
26.2	103	The ESP MCU can be developed using ESP-IDF, Arduino, or MicroPython. For this project, we utilize ESP-IDF for compilation and Visual Studio Code (VSCode) for editing.
2.1	104
26.2	105	=== 2.2.1 Install VSCode and ESP-IDF extension ===
	106
	107	Firstly, download and install VSCode for your computer's operating system from the official website: [[Download Visual Studio Code - Mac, Linux, Windows>>url:https://code.visualstudio.com/download]].
	108
	109	Next, you need to install the ESP-IDF extension within VSCode. The detailed operation steps are illustrated in image 1.
	110
51.2	111	[[image:image-20240928110211-5.png\|\|height="508" width="866"]]
	112
26.2	113	image 1 ESP-IDF extension install
	114
	115	Links for reference: [[Install ESP32 ESP-IDF on Windows and Integrate with VS code (esp32tutorials.com)>>url:https://esp32tutorials.com/install-esp32-esp-idf-windows-integrate-vs-code/#:~~:text=In%20this%20tutorial,%20we%20will%20show%20you%20how%20to%20install]]
	116
5.1	117	=== 2.2.2 Install SquareLine Studio ===
2.1	118
26.2	119	The version we are utilizing for this software is 1.4.2. You can download it from the official link: [[SquareLine Studio - Download the current version of SquareLine Studio>>url:https://squareline.io/downloads#lastRelease]].
2.1	120
26.2	121	Please note that this software necessitates the registration of a license prior to usage, and various licenses come with distinct limitations. For instance, the free version imposes restrictions such as a limit of 1 component, 150 widgets, and 10 screens. However, for first-time downloads, you are granted unrestricted access for a period of 30 days without the need for immediate registration.
2.1	122
26.2	123	== 2.3 Simple usage of SquareLine Studio and export UI code ==
2.1	124
26.2	125	After launching and logging in to this software, create a project as shown in the following image 2. The version of LVGL is 8.3.11.
2.1	126
	127
51.2	128	[[image:image-20240928103357-2.png\|\|height="680" width="708"]]
28.2	129
51.2	130	image 2 create a SquareLine project
26.2	131
	132	Next, we need to make some settings for this project. By clicking in the specified order on image 3, we can see the page as shown in image 4.
	133
	134	[[image:1727229582471-566.png]]
	135
	136	image 3 project settings
	137
51.2	138	[[image:image-20240928105309-4.png\|\|height="526" width="556"]]
	139
26.2	140	image 4 modify project settings
	141
51.2	142	Now we can start to use this software. Here are some usage information for this software.
26.2	143
51.2	144	1.add widget
26.2	145
51.2	146	To add a widget, you should click a widget you want to add at the area entitled “Widgets”. In image , demonstrate a add process of label, button, and image 5.
26.2	147
51.2	148	[[image:image-20240928111412-6.png\|\|height="526" width="864"]]
26.2	149
51.2	150	image 5 add widgets
26.2	151
51.2	152	2.modify widget
26.2	153
51.2	154	The area for modifying widgets is called "Inspector". There are four parts in the "Inspector" tab. We use three of them more frequently, excluding "COMPONENT". The second part is aimed at adjusting the layout, size, position, alignment, flags, and states, etc. of widgets. The name of the second part indicates the type of widget it is representing, and in image 6, it is "BUTTON".
26.2	155
51.2	156	[[image:1727485118799-984.png]]
26.2	157
51.2	158	image 6 the button widget's "Inspector" tab
26.2	159
51.2	160	Second part: "Layout" means a auto position-management for widgets contained in the parent widget. "Transform" includes size, position and align modification.
26.2	161
51.2	162	[[image:1727485251053-655.png]]
26.2	163
51.2	164	image 7 the button widget's "BUTTON" tab
26.2	165
51.2	166	Third part: It is an area of style setting.
26.2	167
54.1	168	Fourth part: It is an area for adding events. In image 8, it is adding a click event to a button. If the button is clicked after the click event is added as shown in image 8, the current screen will fade into another specified screen, and the switching process will last 500ms.
26.2	169
51.2	170	[[image:1727485480434-713.png\|\|height="395" width="290"]]
26.2	171
51.2	172	image 8 add event for button
	173
	174	3.change label widget content
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54.1	176	Modify the content in text as shown in image 9, the text content of label widget will be changed accordingly.
51.2	177
	178	[[image:image-20240928090825-1.png\|\|height="327" width="391"]]
	179
	180	image 9 modify text content of label widget
	181
	182	4.Add image into project
	183
	184	To use the image widget, you should first add an image to your project. The image format must be PNG, and its resolution should not exceed 800x480 pixels. There are two ways to add an image file. One way is to move your image into the folder "…/squareline project/assets/", as shown in image 10. The other way is to click the "ADD FILE INTO ASSETS" button, then select an image from your computer to import. After adding, you can see the image in the "assets" area in SquareLine Studio, as demonstrated in image 11.
	185
	186	[[image:image-20240928113424-9.png\|\|height="355" width="505"]]
	187
	188	image 10 add image file into SquareLine Studio project
	189
	190	[[image:image-20240928114139-10.png\|\|height="559" width="810"]]
	191
	192	image 11 use image widget in SquareLine Studio
	193
	194	5.The relationship between widgets
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	196	There are two common relationships between widgets: one is parallel, the other is parent-child. The parallel relationship means that widgets' relative position is based on a collective object of reference. In parent-child relationship, the parts of the child object that are outside the boundaries of the parent object are not visible by default. Therefore, we need to adjust the position of the child object so that it falls within the range of the parent object, allowing it to be seen as illustrated in image 13.
	197
	198	[[image:1727486567182-334.png\|\|height="318" width="278"]]
	199
	200	image 12 move label1 to make label1 widget be a child of button1 widget(1)
	201
	202	[[image:image-20240928112001-8.png\|\|height="431" width="796"]]
	203
	204	image 13 move label1 to make label1 widget be a child of button1 widget(2)
	205
	206	6.Preview the final effect
	207
	208	An advantage of this kind of software is that you can edit the UI with quick previews. In other words, it provides a way of combining graphical programming with simulation immediately.
	209
	210	[[image:1727487368023-281.png]]
	211
	212	image 14 click on the triangle icon to start or end the simulation
	213
	214	For more detailed usage, please visit the official link: [[SquareLine Studio 1.4.2 Documentation ~\| SquareLine Studio>>url:https://docs.squareline.io/docs/squareline/]].
	215
	216
26.2	217	== 2.4 Integrate UI Code to ESP-IDF Project ==
	218
	219	To achieve the integrating, we first need to export the UI code, then make some modifications, and finally relocate the UI code to a specific position within the project.
	220
	221	[[image:1727229798126-306.png]]
	222
51.2	223	image 15 export UI file
26.2	224
51.2	225	[[image:1727229821582-258.png\|\|height="333" width="662"]]
26.2	226
51.2	227	image 16 exported UI file
26.2	228
51.2	229	Create a empty directory entitled "ui" in path "basic_prj/app_components/ui/", and then copy all UI code exported to this directory.
26.2	230
54.1	231	[[image:image-20240928144830-11.png]]
26.2	232
51.2	233	image 17 open CMakeLists.txt
26.2	234
51.2	235	[[image:1727229892636-154.png\|\|height="521" width="407"]]
26.2	236
51.2	237	image 18 modify CMakeLists.txt
26.2	238
	239	The last step of integrating is adding two lines of code in main.c file.
	240
	241	[[image:1727229926561-300.png]]
	242
51.2	243	image 19 add "ui.h"
26.2	244
	245	[[image:1727229955611-607.png]]
	246
51.2	247	image 20 add "ui_init()"
26.2	248
51.2	249	== 2.5 Brief introduction of hello world project ==
2.1	250
51.2	251	The project consists of two screens. The first screen displays the company's logo, the project name, and a button to navigate to the next screen. The second screen presents some information about this HMI screen product through an image and includes a button to return to the previous screen.
	252
	253	== 2.6 Test Result ==
	254
26.2	255	By pressing the button lying bottom right, the screen can switch to another as expected. This indicates that the UI file has been successfully integrated into the project and is now effective.
2.1	256
51.2	257	[[image:1727488067077-684.png\|\|height="402" width="574"]]
26.2	258
51.2	259	image 21 screen1
26.2	260
51.2	261	[[image:1727488157579-949.png\|\|height="397" width="572"]]
26.2	262
51.2	263	image 22 screen2
26.2	264
5.1	265	= 3. Example Project 1: LoRa Central Display =
2.1	266
7.1	267	[[image:image-20240916101737-1.png\|\|height="468" width="683"]]
2.1	268
7.1	269
	270
8.1	271	= 4. Example Project 2: LoRaWAN RS485 Alarm =
2.1	272
	273
	274	= 6. FAQ =
	275
7.1	276	== 6.1 ==
2.1	277
	278
	279	= 7. Order Info =
	280
4.4	281	== 7.1 Part Number ==
2.1	282
4.4	283	Part Number: (% style="color:#4472c4" %)LTS5
2.1	284
	285
4.4	286	== 7.2 Packing Info ==
2.1	287
4.4	288	Package Includes:
2.1	289
4.4	290	* LTS5 HMI Touch Screen
	291	* 5V,2A DC Power Adapter.
	292	* USB Type C Program Cable
2.1	293
	294	= 8. Support =
	295
	296	* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
	297	* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
	298
	299	= 9. Reference material =
	300
4.2	301	* Datasheet
	302	* Source Code
4.3	303	* Mechinical
2.1	304
	305	= 10. FCC Warning =
	306
	307
	308	This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
	309
	310	(1) This device may not cause harmful interference;
	311
	312	(2) this device must accept any interference received,including interference that may cause undesired operation.
	313

Wiki source code of LTS5 LoRa HMI Touch Screen

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