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