jafrado / 2004_i2c_oled Goto Github PK

Hi,

This isn't really an issue, but more of a question that I hope you can answer: I was wondering if you know how to select CGROM Set B in this display? I got the exact same display which works fine, but the characters in ROM B would suit my use better. I kinda expected to set it in lcd_2004_nuttx.c lines 588-595:

by setting 0x01 instead of 0x00 in line 595. That's mostly based on the code I found here in this other repository:

https://github.com/n2j7/SSD1311/blob/f830a376dfce0b00d0853a4db7d0c04efd6689c8/SSD1311.cpp#L249-L270

But first setting 0xDC followed by 0x01 doesn't seem to do the trick. I also noticed that the other repository sets 0x72 prior to sending the data (and that's also mentioned in your code, but after an if 0), but setting 0x72 followed by 0x01 also doesn't seem to work...

Any clue how to do this? I'll admit that I only half know what I'm doing here so I may be missing something obvious..
Thanks!