search

sparkfun / Qwiic_SerLCD_Py

Python module for I2C control of the SparkFun Qwiic Serial LCDs
MIT License
11 stars 1 forks source link

Characters being deleted when changing backlight? #4

Open nseidle opened 4 years ago

nseidle commented 4 years ago

(moved from OpenLCD issue reported by @mrmakeit)

Getting a weird bug whenever I try to change the backlight over I2C. Any time I do so, the screen will delete a character, usually the last one from the current message, though repeating the change will delete more and more characters. Any idea why this is happening?

import qwiic_serlcd lcd = qwiic_serlcd.QwiicSerlcd() lcd.begin() lcd.setContrast(5) lcd.clearScreen() lcd.print("Hello World") lcd.setBacklight(0,0,0)

'd' should now disappear from 'World'

lcd.setBacklight(100,100,255)

'l' should now disappear from 'World'

Tested on python3 with Qwiic_SerLCD_Py installed.

CleoQc commented 3 years ago

I am reproducing this bug.

Note that the bug does not happen with setFastBacklight()