ardupilot/libraries/PID/examples/pid/pid.cpp

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/*
* Example of PID library.
* 2010 Code by Jason Short. DIYDrones.com
*/
#include <AP_HAL/AP_HAL.h>
#include <PID/PID.h> // ArduPilot Mega RC Library
const AP_HAL::HAL& hal = AP_HAL::get_HAL();
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long radio_in;
long radio_trim;
PID pid;
void setup()
{
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hal.console->println("ArduPilot Mega PID library test");
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hal.scheduler->delay(1000);
//rc.trim();
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radio_trim = hal.rcin->read(0);
pid.kP(1);
pid.kI(0);
pid.kD(0.5f);
pid.imax(50);
pid.save_gains();
pid.kP(0);
pid.kI(0);
pid.kD(0);
pid.imax(0);
pid.load_gains();
hal.console->printf(
"P %f I %f D %f imax %f\n",
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pid.kP(), pid.kI(), pid.kD(), pid.imax());
}
void loop()
{
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hal.scheduler->delay(20);
//rc.read_pwm();
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long error = hal.rcin->read(0) - radio_trim;
long control= pid.get_pid(error, 1);
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hal.console->print("control: ");
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hal.console->println(control,BASE_DEC);
}
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AP_HAL_MAIN();