Issue Nextion function picq

Other Hardware Displays
1

Hi,

Trying to work with Nextion and playing with picture manipulation.
When using picq function I get an error stating: Error:Invalid Variables:picq 50, 500,150,150, 1

There are no variables used in this function.
What am I doing wrong?

See all in this screen shot:

Nextion picq error
Nextion picq error1192×817 303 KB

Gr,
Ron

2

picq 50,500,150,150,1

If you have a 480x320 display then the 500 value is out of range.

From the Nextion Instruction Set
https://wiki.iteadstudio.com/Nextion_Instruction_Set#picq:_Crop_picture

picq: Crop picture

picq x, y, w, h, picid

x: x coordinate starting point;

y: y coordinate starting point;

w: area width;

h: area height;

picid: Picture ID;

  • Example:

picq 20, 50, 30, 20, 0 //Crop the area from starting coordinate (20, 50) , with a width 30×height 20 size, //in the picture 0 (the background picture must be full-screen) and display it on //the screen, and the display coordinate is the starting coordinate (20, 50).

Remarks:

This instruction requires that the background picture must be full-screen; otherwise, the image you crop is not the one you want. The crop image area and the display area is overlap on the screen.

3

Hi,

When changing the 500 to 50 (was a typo in the picture I tried to make for this topic) it still shows the same error.

Nextion picq error
Nextion picq error1187×945 339 KB

4

You are cropping picture id 1 but the pic for the page is shown as pic 0. What if you change the crop instruction picq to 50,50,150,150,0 .

5

I get the same message.

Idea is to have a base picture as background and having a cropped picture partly over it.
This is just an unusefull test just to see it working.

In the end there will be progress elements like in this example:

picq example

6

Try with the picq instruction as a PostInitialization event instead of a PreInitialization event.

In my experimenting with picq I have gotten the croped image to display properly as a post, touch, or release event but not as a PreInitialization event.

7

Hi Cattledog,

Thanks for having patience with me.

I tried to put the picq in those events and still the same erre.
What is not clear to me is the message talks about variables in the statement where I only use numbers.

I just did a test with only having one page in the HMI file and two pictures. The same error message.
I have seen examples on the internet where this works: two full screen picts using picq to overlay a part of one over the background pic.

8

I think I found the issue: spaces in the picq command after the "," separators (like usual to do when programming for reading).
Aftre removing those and putting the statement in the post initialization it worked.