width, height = 40, 30
green565 = 0x07E0
raw_buf = bytearray(width * height * 2)
for i in range(width * height):
    raw_buf[2*i]   = (green565 >> 8) & 0xFF
    raw_buf[2*i+1] = green565 & 0xFF
Display.drawRawBuf(raw_buf, 100, 100, width, height, len(raw_buf)//2, swap=False)

Hopefully this will help others and eventually get changed in the docs - assuming it's the same for all UIFlow2 supported devices?

If anybody knows a fix to make it work properly for lower than 16bit depth screens so I can draw a raw buffer to a 1-bit canvas properly, please let me know!

My first attempts at uploading a program into the Tough are met with "UiFlow wants to connect to a serial port" / "No compatible devices found".

I'm confused as the burner can see it and has uploaded UiFlow V1.15.1 successfully, why cannot the IDE?

I'm using Ubuntu and I know the Tough is seen by the OS.

I imagine the problem is something really simple but I can't find any levels to pull that might help. I was hoping that UiFlow was a 'Just Works' kind of thing but so far I am stuck! Help please!

Stuart

Now, I need to establish USB communication between my PC and the Core2. Essentially, I would like to run a Python script on my PC that sends an angle to the Core2 so it can command the motors to reach that desired value. I want to understand whether the USB cable connecting the Core2 to the PC is sufficient (I’ve asked on chat.m5stack.com and it should be possible according to AI response).

I’ve tried many approaches, all unsuccessful. Here are the two main ones:

Attempt 1: In UIFlow1 I used the Hardware -> UART blocks, defining both uart1 = machine.UART(1, tx=32, rx=33) and uart2 = machine.UART(2, tx=17, rx=16). In both cases, I cannot read anything (uart1.any() / uart2.any() return nothing).

Attempt 2: I flashed the UIFlow2 firmware, but I cannot find blocks for serial communication.

It seems I could also bypass UIFlow entirely and program everything in VS Code using the Python and Pymakr extensions, but I would like to know if this is the only way before going that way.

Thanks a lot for your support!
Eleonora

While this might be documented in various guides, I figured it out today through trial and error. Now that I’ve got it working, I want to share what I learned for anyone else on the same path.

Cheers,

CK

Hello there,

my goal is to control WLED fixture via CORE2 (by a simple http requests).

Does anyone know how to add a simple buttons on a screen. Some older tuts show the button block in UI section but now it isn`t there.

Thanks in advance.

aTT

does buttons now need to be added/enabled in hardware section? left hand side of the screen below device image

the list blocks can be used for that. See example in UIFlow2 ProjectZone: M5Dial_Get_Values_From_Tuple_UIFlow_2.0.4

Thanks
Felix

as @ajb2k3 mentioned only one GPIO (the second one) is used for the RGB unit. So the other GPIO can still be used as input. I created an example which uses GPIO1 as input to control the color of the three RGB LEDs in the RGB unit.

See UIFlow2 Project Zone : M5Dial_RGBUnit_GPIO1_as_input_UIFlow2.0.4

Thanks
Felix

I set up My RPI4B to look into it and got distracted and so haven't got very far.

I am wondering if there is a tutorial for Blocky.
Right now I am using it as shown in some videos.. Double clicking a bloc duplicates it..
There may be other possibilties as well. Is it possible to select multiple blocks and duplicate them ?
For UI Flow, are they explanations how to create m5 files from python libraries for third party sensors ?
Thanks for your comments..

csierra67

I'de like to create communication Between my phone running android and my core2 to send receive data
(Eg gps coordinates or sms text,)

I use Automate app from llamalab (tasker like) to run automation on my phone, and it can use tasker plugin...
Bluetooth or ble seems the better way,

I've already send data over classic bluetooth SPP, on several arduino project and i'de like to do it with my M5stack core2

How to create a serial Communication ?
(ble, gatt, spp...)

Best regards ,

Regards.

Alvaro

0_1672158968164_c8c5716c-dee8-468b-927b-81676e4ad855-image.png

Notice the way this is listed for other boards like the stick-c and do the same. You can now use the stick-c plus board listed in the Arduino IDE! You could also just use the stick-c board listed but I had errors in third-party programs.

UIFlow uses micropython which runs off the controller. Arduino uses a C/C++ cross which wipes the micropython each time.

I don't really know why the communication might be slow. I can only guess that UIFlow firmware maybe has some safeguards in place to prevent serial from flooding the line.

I guess that your software on the PC manipulates the control lines (CTS, etc.) on the serial port in a way which triggers the auto download / reset mechanism in M5Core2. Unless there is some setting in your software to configure that behavior I don't think there is much you can do.

Thanks
Felix