OLED Battery Dispay

simguy · April 16, 2023, 1:18am

Can the OLED battery display be changed to show different types of bmp images to show the battery level, and if so how would that be done

profezzorn · April 16, 2023, 1:41am

No. Although I don’t think it would be particularly hard to add.
It is however fairly easy to replace the glyph that the battery graph is made of.

It’s defined here:

github.com

profezzorn/ProffieOS/blob/7a21d818d5d40a44bcd511c1df9909a5c9b62671/display/monoframe.h#L13


      
          
          
struct Glyph {
            int32_t skip : 7;
            int32_t xoffset : 7;
            int32_t yoffset : 7;
            int32_t columns : 8;
            int32_t column_size : 3;
            const void* data;
          };
          
          
const uint32_t BatteryBar16_data[] = {
             0b00000000000000000000000000000000UL,
             0b00000111111111111111111111100000UL,
             0b00011111111111111111111111111000UL,
             0b00111111111111111111111111111100UL,
             0b01111111111111111111111111111110UL,
             0b11111111111111111111111111111111UL,
             0b11111111111111111111111111111111UL,
             0b11111111111111111111111111111111UL,
             0b11111111111111111111111111111111UL,
             0b11111111111111111111111111111111UL,

Note that glyphs are turned 90 degrees.

You may also need to change the “skip” value which basically defines how wide the glyph is here:

github.com

profezzorn/ProffieOS/blob/7a21d818d5d40a44bcd511c1df9909a5c9b62671/display/monoframe.h#L32


      
             0b11111111111111111111111111111111UL,
             0b11111111111111111111111111111111UL,
             0b11111111111111111111111111111111UL,
             0b01111111111111111111111111111110UL,
             0b00111111111111111111111111111100UL,
             0b00011111111111111111111111111000UL,
             0b00000111111111111111111111100000UL,
          };
          
          
#define GLYPHDATA(X) NELEM(X), sizeof((X)[0]) - 1, (const void*)X
          const Glyph BatteryBar16 = { 16, 0, 0, GLYPHDATA(BatteryBar16_data) };
          
          
#include "StarJedi10Font.h"
          #include "Aurebesh10Font.h"
          
          
#ifndef MAX_GLYPH_HEIGHT
          #define MAX_GLYPH_HEIGHT 32
          #endif
          
          
template<int Width, class col_t>
          class MonoFrame {

(You just change the 16 to something else.)

At some point I need to make it so that images can be used as UV and battery meters. Basically you would just have N images, and it would choose which one to show based on the battery level or sound level.

NoSloppy · April 16, 2023, 3:26am

This blast from the past might help:

Battery icon.txt (670 Bytes)