ardupilot/libraries/AP_ServoRelayEvents/AP_ServoRelayEvents.cpp

167 lines
4.3 KiB
C++

/*
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* AP_ServoRelayEvents - handle servo and relay MAVLink events
*/
#include <AP_HAL/AP_HAL.h>
#include <AP_Common/AP_Common.h>
#include "AP_ServoRelayEvents.h"
#include <RC_Channel/RC_Channel.h>
#include <SRV_Channel/SRV_Channel.h>
#include <GCS_MAVLink/GCS.h>
extern const AP_HAL::HAL& hal;
bool AP_ServoRelayEvents::do_set_servo(uint8_t _channel, uint16_t pwm)
{
SRV_Channel *c = SRV_Channels::srv_channel(_channel-1);
if (c == nullptr) {
return false;
}
switch(c->get_function())
{
case SRV_Channel::k_none:
case SRV_Channel::k_manual:
case SRV_Channel::k_rcin1 ... SRV_Channel::k_rcin16: // rc pass-thru
break;
default:
gcs().send_text(MAV_SEVERITY_INFO, "ServoRelayEvent: Channel %d is already in use", _channel);
return false;
}
if (type == EVENT_TYPE_SERVO &&
channel == _channel) {
// cancel previous repeat
repeat = 0;
}
c->set_output_pwm(pwm);
c->ignore_small_rcin_changes();
return true;
}
bool AP_ServoRelayEvents::do_set_relay(uint8_t relay_num, uint8_t state)
{
if (!relay.enabled(relay_num)) {
return false;
}
if (type == EVENT_TYPE_RELAY &&
channel == relay_num) {
// cancel previous repeat
repeat = 0;
}
if (state == 1) {
relay.on(relay_num);
} else if (state == 0) {
relay.off(relay_num);
} else {
relay.toggle(relay_num);
}
return true;
}
bool AP_ServoRelayEvents::do_repeat_servo(uint8_t _channel, uint16_t _servo_value,
int16_t _repeat, uint16_t _delay_ms)
{
SRV_Channel *c = SRV_Channels::srv_channel(_channel-1);
if (c == nullptr) {
return false;
}
switch(c->get_function())
{
case SRV_Channel::k_none:
case SRV_Channel::k_manual:
case SRV_Channel::k_rcin1 ... SRV_Channel::k_rcin16: // rc pass-thru
break;
default:
gcs().send_text(MAV_SEVERITY_INFO, "ServoRelayEvent: Channel %d is already in use", _channel);
return false;
}
channel = _channel;
type = EVENT_TYPE_SERVO;
start_time_ms = 0;
delay_ms = _delay_ms / 2;
repeat = _repeat * 2;
servo_value = _servo_value;
update_events();
return true;
}
bool AP_ServoRelayEvents::do_repeat_relay(uint8_t relay_num, int16_t _repeat, uint32_t _delay_ms)
{
if (!relay.enabled(relay_num)) {
return false;
}
type = EVENT_TYPE_RELAY;
channel = relay_num;
start_time_ms = 0;
delay_ms = _delay_ms/2; // half cycle time
repeat = _repeat*2; // number of full cycles
update_events();
return true;
}
/*
update state for MAV_CMD_DO_REPEAT_SERVO and MAV_CMD_DO_REPEAT_RELAY
*/
void AP_ServoRelayEvents::update_events(void)
{
if (repeat == 0 || (AP_HAL::millis() - start_time_ms) < delay_ms) {
return;
}
start_time_ms = AP_HAL::millis();
switch (type) {
case EVENT_TYPE_SERVO: {
SRV_Channel *c = SRV_Channels::srv_channel(channel-1);
if (c != nullptr) {
if (repeat & 1) {
c->set_output_pwm(c->get_trim());
} else {
c->set_output_pwm(servo_value);
c->ignore_small_rcin_changes();
}
}
break;
}
case EVENT_TYPE_RELAY:
relay.toggle(channel);
break;
}
if (repeat > 0) {
repeat--;
} else {
// toggle bottom bit so servos flip in value
repeat ^= 1;
}
}
// singleton instance
AP_ServoRelayEvents *AP_ServoRelayEvents::_singleton;
namespace AP {
AP_ServoRelayEvents *servorelayevents()
{
return AP_ServoRelayEvents::get_singleton();
}
}