Hi,
I have a SparkFun 16x2 SerLCD - RGB Text (Qwiic), no problem writing down Hello world using i2c, just to learn more about it I read through the datasheet (HD44780U) to find commands and how to read information from configuration etc…I wasn’t successful to run any command mentioned on page 24 such as clear display or read configuration information back from display to see what sort of setting i have on the device. the command is in binary which i change to Hex and write but instead it writes character codes from ROM. There are two commands 7C follow by 2D from sparkfun to clean display that works but i haven’t seen these two commands in the product datasheet. Is this a wrong datasheet i am looking at? can you help and provide one example that works from commands on page 24 of the datasheet? Thank you for your help in advance…