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#include "quantum.h"
#define BL_RED OCR1B
#define BL_GREEN OCR1A
#define BL_BLUE OCR1C
void backlight_init_ports(void)
{
// Set B5, B6, and B7 as output
DDRB |= (1<<7)|(1<<6)|(1<<5);
// Setup PWM
ICR1 = 0xFFFF;
TCCR1A = 0b10101010;
TCCR1B = 0b00011001;
BL_RED = 0xFFFF;
BL_GREEN = 0xFFFF;
BL_BLUE = 0xFFFF;
}
void backlight_set(uint8_t level)
{
// Set the RGB color
switch (level)
{
case 0:
// Off
BL_RED = 0xFFFF;
BL_GREEN = 0xFFFF;
BL_BLUE = 0xFFFF;
break;
case 1:
// Red
BL_RED = 0x0000;
BL_GREEN = 0xFFFF;
BL_BLUE = 0xFFFF;
break;
case 2:
// Green
BL_RED = 0xFFFF;
BL_GREEN = 0x0000;
BL_BLUE = 0xFFFF;
break;
case 3:
// Blue
BL_RED = 0xFFFF;
BL_GREEN = 0xFFFF;
BL_BLUE = 0x0000;
break;
case 4:
// Magenta
BL_RED = 0x4000;
BL_GREEN = 0x4000;
BL_BLUE = 0x4000;
break;
case 5:
// Purple
BL_RED = 0x0000;
BL_GREEN = 0xFFFF;
BL_BLUE = 0x0000;
break;
case 6:
// Yellow
BL_RED = 0x0000;
BL_GREEN = 0x0000;
BL_BLUE = 0xFFFF;
break;
default:
xprintf("Unknown level: %d\n", level);
}
}
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