void display_multiplex(void)
{
clear_display();
if (display_on) {
switch (shield) {
#ifdef iv6_support
case SHIELD_IV6:
write_vfd_iv6(multiplex_counter, calculate_segments_7(data[multiplex_counter]));
break;
#endif
#ifdef iv17_support
case SHIELD_IV17:
write_vfd_iv17(multiplex_counter, calculate_segments_16(data[multiplex_counter]));
break;
#endif
case SHIELD_IV18:
if (multiplex_counter == 8)
write_vfd_iv18(8, g_iv18seg0);
else
write_vfd_iv18(multiplex_counter, calculate_segments_7(data[7-multiplex_counter]));
break;
#ifdef iv17_6digit_support
case SHIELD_IV17_6D:
write_vfd_iv17_6d(multiplex_counter, calculate_segments_16(data[multiplex_counter]));
break;
#endif
default:
break;
}
}
multiplex_counter++;
if (multiplex_counter == mpx_limit) multiplex_counter = 0;
STROBE_HIGH; // Pulse Strobe to update Latch data
STROBE_LOW;
}
// display multiplexing routine for 4 digits: run once every 1 ms
void display_multiplex_iv17(void)
{
clear_display();
switch (multiplex_counter) {
case 0:
write_vfd_iv17(0, calculate_segments_16(display_on ? data[0] : ' '));
break;
case 1:
write_vfd_iv17(1, calculate_segments_16(display_on ? data[1] : ' '));
break;
case 2:
write_vfd_iv17(2, calculate_segments_16(display_on ? data[2] : ' '));
break;
case 3:
write_vfd_iv17(3, calculate_segments_16(display_on ? data[3] : ' '));
break;
}
multiplex_counter++;
// g_brightness == 1 thru 10
if (multiplex_counter == (4 + (18 - (g_brightness-1)*2))) multiplex_counter = 0;
}