Display QR code-Intelligent TFT module

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Display QR code-Intelligent TFT module [Copy link]

Application Example : Using TOPWAY Smart LCD (HMT050CC-C) to display QR code

Step 1: Create a project

①Open the Editor software and click on the menu bar to create a new project File --> New Project

②Enter the project nameProject Name : QR_Code_Demo

③Enter the project save locationCreate a Project Folder in: D:xxx

④Select the intelligent module display resolution Sreen Size: 800x480

⑤Click " OK" to complete

Step 2: Create a page and import the background image

①Right -click Pages in the Resource Window and select New Page to create the PG0000 page .

②Right -click Background Image in the Resource window and select Import Background Image

Step 3: Associate the page with the background image

①Click the work area , and the page properties will be displayed on the right.

② Select the background image of the page in Background Image in the properties

Step 4: Create a string VP address

① In the Resource window, right-click String Variables and select New VP

Step 5: Create touch keys and associate them with the CALL keyboard

①Click the touch key on the menu toolbar

②Drag a rectangular area in the page workspace to create a touch key element on the page

③ In the properties, select CALL : " KeyBoard English"

④Title /Value setting in the properties : " Input"

⑤ In the properties, select VP Address : 0x000080

Step 6: Create QR code elements and associated VPs

①Click the QR Code icon on the menu toolbar

②Drag out a rectangular area in the page workspace to create two QR code elements on the page

③In the properties, set the X/Y Pop Position to: 465 , 110

④ In the properties, select VP Address : 0x000080

⑤ Select Size in the properties : 37*37(106Byte)

⑥ In the properties, set the Scale to 4 and 7 respectively.

Step 7: Compile and download

Step 8 Power-on display

①Disconnect the USB connection from the module

② Provide 5V power to the module

③Power -on display

( Connect serial line, default baud rate: 115200,8,n,1)

④Press the touch key on the screen to pop up the keyboard

⑤ Input VP value

( You can also use the command: AA 42 00 00 00 80 53 48 45 4E 5A 48 45 4E 20 54 4F 50 57 41 59 00 cc 33 c3 3c

Complete the same input )

⑥Click " OK" and the 2D code will be successfully displayed on the page.

Note: 1. The built-in English Keyboard supports up to 35 ASCII characters. If longer characters are required, please use the PIP Keyboard ( supports 127 characters ) .

2. VP_STR can support up to 127 bytes of input. If longer is required, please use VP_N16 space and use 0x82, 0x83 instructions to read and write.