diff options
Diffstat (limited to 'src/display.cc')
| -rw-r--r-- | src/display.cc | 56 |
1 files changed, 37 insertions, 19 deletions
diff --git a/src/display.cc b/src/display.cc index 4215983..b0bc636 100644 --- a/src/display.cc +++ b/src/display.cc @@ -9,7 +9,19 @@ Display display; -uint8_t teststr[] = {'O', 'h', 'a', 'i', '!', 0}; +Display::Display() +{ + disp_buf[0] = 0xff; + disp_buf[1] = 0xfb; + disp_buf[2] = 0xdd; + disp_buf[3] = 0xfd; + disp_buf[4] = 0xdd; + disp_buf[5] = 0xfb; + disp_buf[6] = 0xff; + disp_buf[7] = 0xff; + char_pos = -1; + scroll_delay = 400; +} void Display::disable() { @@ -30,24 +42,9 @@ void Display::enable() TIMSK0 = _BV(TOIE0); } -/* - * Draws a single display column. This function should be called at least once - * per millisecond. - * - * Current configuration: - * Called every 256 microseconds. The whole display is refreshed every 2048us, - * giving a refresh rate of ~500Hz - */ -ISR(TIMER0_OVF_vect) +void Display::multiplex() { - static uint8_t active_col = 0; - static uint16_t scroll = 0; - - static uint8_t disp_buf[] = {0xff,0xfb,0xdd,0xfd,0xdd,0xfb,0xff,0xff}; - - static uint8_t str_pos = 0; - static int8_t char_pos = -1; - + static uint16_t scroll; uint8_t i, glyph_len; uint8_t *glyph_addr; @@ -62,7 +59,7 @@ ISR(TIMER0_OVF_vect) if (++active_col == 8) active_col = 0; - if (++scroll == 512) { + if (++scroll == scroll_delay) { scroll = 0; for (i = 0; i < 7; i++) { @@ -89,3 +86,24 @@ ISR(TIMER0_OVF_vect) } } } + +void Display::reset() +{ + for (int i = 0; i < 8; i++) + disp_buf[i] = 0xff; + str_pos = 0; + char_pos = -1; +} + +/* + * Draws a single display column. This function should be called at least once + * per millisecond. + * + * Current configuration: + * Called every 256 microseconds. The whole display is refreshed every 2048us, + * giving a refresh rate of ~500Hz + */ +ISR(TIMER0_OVF_vect) +{ + display.multiplex(); +} |