I need some help wiring a caps lock led to a Teensy
Posted: 08 Jan 2018, 01:42
I have it wired up like this:
pin D4 ---> +anode led ---> -cathode led ---> 1k resistor ---> GND
My code looks like this:
I have this code trigger when I press my function key (CAPS LOCK), and the led should turn off when I release it.
I've used HID Listen and print statements to verify that the code triggers properly when I press and release, but the light doesn't come on. I have to believe I don't understand how it should be wired and how pins are activated.
pin D4 ---> +anode led ---> -cathode led ---> 1k resistor ---> GND
My code looks like this:
Code: Select all
void led_layer_set(uint32_t state) {
DDRD |= (1<<4);
if ((1<<1 & state) != 0) {
print("layer pressed");
PORTD |= (1<<4);
} else {
print("released");
PORTD &= ~(1<<4);
}
} I've used HID Listen and print statements to verify that the code triggers properly when I press and release, but the light doesn't come on. I have to believe I don't understand how it should be wired and how pins are activated.