playground project testing RP2040 (Pico) with SSD1309 2.42" OLED from AliExpress
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pico-ssd1309-test/ufb/fb_7seg.c

72 lines
1.8 KiB

#include "fb_7seg.h"
#include "progmem.h"
enum SevenSegBars {
T = 1, RT = 2, RB = 4, B = 8, LB = 16, LT = 32, M = 64
};
static const uint8_t PROGMEM seven[] = {
[0] = T | RT | RB | B | LB | LT,
[1] = RT | RB,
[2] = T | RT | M | LB | B,
[3] = T | RT | M | RB | B,
[4] = RT | RB | M | LT,
[5] = T | LT | M | RB | B,
[6] = T | LT | LB | B | RB | M,
[7] = T | RT | RB,
[8] = T | LT | RT | LB | RB | B | M,
[9] = T | LT | RT | RB | B | M,
};
fbpos_t fb_7seg_dig(fbpos_t x, fbpos_t y, fbpos_t w, fbpos_t h, fbpos_t th, uint8_t digit, fbcolor_t color)
{
const uint8_t mask = digit > 9 ? 0 : pgm_read_byte(&seven[digit]);
const fbpos_t wi = w - th * 2;
const fbpos_t hi = (h - th * 3) / 2;
bool bcolor = !color; // changed for XOR
fb_rect(x + th,
y,
wi,
th, bcolor ^ (bool) (mask & T));
fb_rect(x + th,
y + th + hi,
wi,
th, bcolor ^ (bool) (mask & M));
fb_rect(x + th,
y + th * 2 + hi * 2,
wi,
th, bcolor ^ (bool) (mask & B));
fb_rect(x,
y + th,
th,
hi, bcolor ^ (bool) (mask & LT));
fb_rect(x + th + wi,
y + hi + th,
th,
hi, bcolor ^ (bool) (mask & LB));
fb_rect(x + th + wi,
y + th,
th,
hi, bcolor ^ (bool) (mask & RT));
fb_rect(x + th + wi,
y + th * 2 + hi,
th,
hi, bcolor ^ (bool) (mask & RB));
return w;
}
fbpos_t fb_7seg_period(fbpos_t x, fbpos_t y, fbpos_t w, fbpos_t h, fbpos_t th, fbcolor_t color)
{
const fbpos_t hi = (h - th * 3) / 2;
fb_rect(x, y + hi * 2 + th * 2, th, th, color);
return th;
}