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#include "17.h"
int pwm_level;
void matrix_init_kb(void) {
// put your keyboard start-up code here
// runs once when the firmware starts up
matrix_init_user();
// JTAG disable for PORT F. write JTD bit twice within four cycles.
MCUCR |= (1<<JTD);
MCUCR |= (1<<JTD);
};
void led_set_kb(uint8_t usb_led)
{
print("led_set\n");
}
void backlight_init_ports(void)
{
// Set C7 to output
DDRC |= (1<<7);
// Initialize the timer
TC4H = 0x03;
OCR4C = 0xFF;
TCCR4A = 0b10000010;
TCCR4B = 0b00000001;
}
void backlight_set(uint8_t level)
{
// Determine the PWM level
switch (level)
{
case 0:
// 33%
pwm_level = 0x54;
break;
case 1:
// 66%
pwm_level = 0xA8;
break;
case 2:
// 100%
pwm_level = 0xFF;
break;
case 3:
// 0%
pwm_level = 0x00;
break;
default:
xprintf("Unknown level: %d\n", level);
}
// Write the PWM level to the timer
TC4H = pwm_level >> 8;
OCR4A = 0xFF & pwm_level;
}
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