int main() {
pin_test();
gc_ptr<A> a = gc_new<A, int>(0xdeadbeef);
gc_ptr<B> b = gc_new<B, gc_ptr<A> >(a);
A* ptr = a.get();
int value = ptr->value;
gc();
assert(ptr != a.get());
assert(value == a->value);
assert(b->a.get() == a.get());
return 0;
}
void get_char(volatile unsigned char *pins, unsigned char pin, char *rxbyte) {
//
// read character into rxbyte on pins pin
// assumes line driver (inverts bits)
//
*rxbyte = 0;
while (pin_test(*pins,pin))
//
// wait for start bit
//
;
//
// delay to middle of first data bit
//
half_bit_delay();
bit_delay();
//
// unrolled loop to read data bits
//
if pin_test(*pins,pin)
*rxbyte |= (1 << 0);
else
int main(void) {
// set clock divider to /1
CLKPR = (1 << CLKPCE);
CLKPR = (0 << CLKPS3) | (0 << CLKPS2) | (0 << CLKPS1) | (0 << CLKPS0);
// initialize rgb output pins
set(led_r_port, led_r_pin);
set(led_g_port, led_g_pin);
set(led_b_port, led_b_pin);
output(led_r_direction, led_r_pin);
output(led_g_direction, led_g_pin);
output(led_b_direction, led_b_pin);
input(buttons_direction, button_0_pin);
input(buttons_direction, button_1_pin);
input(buttons_direction, button_2_pin);
input(buttons_direction, button_3_pin);
pullup(buttons_port, button_0_pin);
pullup(buttons_port, button_1_pin);
pullup(buttons_port, button_2_pin);
pullup(buttons_port, button_3_pin);
unsigned int elapsed_us = 0;
int button_polls_per_second = 10;
int button_states[4] = {0, 0, 0, 0};
int rgb_pulses_per_ms[3] = {0, 0, 0};
while (1) {
_delay_us(1);
elapsed_us++;
// poll button state
if (elapsed_us % 1000 < button_polls_per_second) {
if (!pin_test(buttons_pins, button_0_pin)) {
button_states[0] = 10;
} else if (button_states[0]) {
button_states[0]--;
}
if (!pin_test(buttons_pins, button_1_pin)) {
button_states[1] = 10;
} else if (button_states[1]) {
button_states[1]--;
}
if (!pin_test(buttons_pins, button_2_pin)) {
button_states[2] = 10;
} else if (button_states[2]) {
button_states[2]--;
}
if (!pin_test(buttons_pins, button_3_pin)) {
button_states[3] = 10;
} else if (button_states[3]) {
button_states[3]--;
}
}
// calculate rgb values
set_rgb_pulse_rates(button_states, rgb_pulses_per_ms);
// update red led
if (elapsed_us % 1000 < rgb_pulses_per_ms[0]) {
clear(led_r_port, led_r_pin);
} else {
set(led_r_port, led_r_pin);
}
// update green led
if (elapsed_us % 1000 < rgb_pulses_per_ms[1]) {
clear(led_g_port, led_g_pin);
} else {
set(led_g_port, led_g_pin);
}
// update blue led
if (elapsed_us % 1000 < rgb_pulses_per_ms[2]) {
clear(led_b_port, led_b_pin);
} else {
set(led_b_port, led_b_pin);
}
}
}