lcd.print disappears with rotate 270 and Y > 104

Reply to lcd.print disappears with rotate 270 and Y > 104 on Sun, 26 Apr 2020 05:13:41 GMT

dclaar — Sun, 26 Apr 2020 05:13:41 GMT

I will finally note that lcd.print works fine with lcd.orient(lcd.LANDSCAPE)
and lcd.orient(lcd.LANDSCAPE_FLIP)

Reply to lcd.print disappears with rotate 270 and Y > 104 on Tue, 21 Apr 2020 14:17:13 GMT

dclaar — Tue, 21 Apr 2020 14:17:13 GMT

I see that even with lcd.print, the display still blinks. I thought that having layers meant that the graphics routines were more sophisticated than they are.

Reply to lcd.print disappears with rotate 270 and Y > 104 on Tue, 21 Apr 2020 02:26:13 GMT

dclaar — Tue, 21 Apr 2020 02:26:13 GMT

I tried using a rectangle + label, and it still blinks:

while True:
  rectangle0.setBgColor(0xff0000)
  label0.setColor(0xffffff)
  label0.setText('AQI')
  wait_ms(1000)

So I think only lcd.print will not do the blinking thing. Even though the rectangle is "below" the text, it appears to completely replace the screen rather than honoring the layering.

Reply to lcd.print disappears with rotate 270 and Y > 104 on Mon, 20 Apr 2020 13:43:33 GMT

crami25 — Mon, 20 Apr 2020 13:43:33 GMT

@dclaar
The M5stack grey has a built-in gyroscope, the black one hasn't. Use the gyroscope data determining at which angle your text shall be displayed. In Blockly you can define different labels for the different angles and display them accordingly. If you write the program in Blockly/Python you won't be able to save it. In that case I put the Python line into a Blockly exec code calling the exec code with a subroutine. That way your block code can be stored in a *.m5f file. You can even pass global variables into your exec code (eg the x,y position of your text on the display and the rotation angle.

Reply to lcd.print disappears with rotate 270 and Y > 104 on Sun, 19 Apr 2020 23:32:34 GMT

dclaar — Sun, 19 Apr 2020 23:32:34 GMT

Thanks! To be clear, I was trying to do this:

while True:
  lcd.font(lcd.FONT_DejaVu56, rotate=270)
  lcd.print('aqi', 10, 104, 0xffffff)
  wait_ms(1000)

All Y values up to 104 move the text further away from the button, as expected if 0,0 is at the top.
But once the Y parameter is 105 or larger (which is about mid-screen), the text just disappears! This happens in Blockly, too.
That's the gist of my bug, which is why I tried to work around it with the above code.

I guess that I could just require the unit be set down in the 90 degree orientation, but I was hoping to be user-friendly and detect which way the unit was sitting and react accordingly.

Reply to lcd.print disappears with rotate 270 and Y > 104 on Sun, 19 Apr 2020 22:27:26 GMT

crami25 — Sun, 19 Apr 2020 22:27:26 GMT

Every time you call SetScreenColor(0xff0000) in your loop the display is completly erased and then your text is displayed again. So the annoying flashing is due to your programming style ! If you rotate a label, you mostly will have to rearrange its position. If you rotate a label at the bottom of the screen simply by changing the rotate value for your text in python to eg. 90 it will fall of the bottom of the screen. If you keep your programming strictly to Blockly, you can see what happens.

Reply to lcd.print disappears with rotate 270 and Y > 104 on Sun, 19 Apr 2020 18:19:41 GMT

dclaar — Sun, 19 Apr 2020 18:19:41 GMT

This kind of works, but the screen flashes every time, which is annoying

while True:
  setScreenColor(0xff0000)
  label0.setColor(0x800000)
  label0.setText('Hello M5')
  wait(1)