ardupilot/libraries/AP_HAL_AVR/examples/Blink/Blink.pde

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#include <AP_Common.h>
#include <AP_Progmem.h>
#include <AP_HAL.h>
#include <AP_HAL_AVR.h>
const AP_HAL::HAL& hal = AP_HAL_AVR_APM1;
AP_HAL::DigitalSource *a_led;
AP_HAL::DigitalSource *b_led;
AP_HAL::DigitalSource *c_led;
void loop (void) {
hal.scheduler->delay(1000);
hal.gpio->write(13, 1);
a_led->write(1);
b_led->write(0);
c_led->write(1);
hal.scheduler->delay(1000);
hal.gpio->write(13, 0);
a_led->write(0);
b_led->write(1);
c_led->write(0);
}
void setup (void) {
hal.gpio->pinMode(13, GPIO_OUTPUT);
hal.gpio->write(13, 0);
a_led = hal.gpio->channel(27);
b_led = hal.gpio->channel(26);
c_led = hal.gpio->channel(25);
a_led->mode(GPIO_OUTPUT);
b_led->mode(GPIO_OUTPUT);
c_led->mode(GPIO_OUTPUT);
a_led->write(0);
b_led->write(0);
c_led->write(0);
}
AP_HAL_MAIN();