mirror of https://github.com/ArduPilot/ardupilot
83 lines
2.1 KiB
Plaintext
83 lines
2.1 KiB
Plaintext
// 2010 Jose Julio
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// 2011 Adapted and updated for AC2 by Jason Short
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//
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// Automatic Acrobatic Procedure (AAP) v1 : Roll flip
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// State machine aproach:
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// Some states are fixed commands (for a fixed time)
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// Some states are fixed commands (until some IMU condition)
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// Some states include controls inside
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uint8_t flip_timer;
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uint8_t flip_state;
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#define AAP_THR_INC 170
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#define AAP_THR_DEC 120
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#define AAP_ROLL_OUT 2000
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static int8_t flip_dir;
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void init_flip()
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{
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if(false == ap.do_flip) {
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ap.do_flip = true;
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flip_state = 0;
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flip_dir = (ahrs.roll_sensor >= 0) ? 1 : -1;
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Log_Write_Event(DATA_BEGIN_FLIP);
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}
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}
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void roll_flip()
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{
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int32_t roll = ahrs.roll_sensor * flip_dir;
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// Roll State machine
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switch (flip_state) {
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case 0:
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if (roll < 4500) {
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// Roll control
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roll_rate_target_bf = 40000 * flip_dir;
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if(ap.manual_throttle){
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// increase throttle right before flip
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set_throttle_out(g.rc_3.control_in + AAP_THR_INC, false);
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}
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}else{
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flip_state++;
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}
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break;
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case 1:
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if((roll >= 4500) || (roll < -9000)) {
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#if FRAME_CONFIG == HELI_FRAME
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roll_rate_target_bf = 40000 * flip_dir;
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#else
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roll_rate_target_bf = 40000 * flip_dir;
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#endif
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// decrease throttle while inverted
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if(ap.manual_throttle){
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set_throttle_out(g.rc_3.control_in - AAP_THR_DEC, false);
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}
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}else{
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flip_state++;
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flip_timer = 0;
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}
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break;
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case 2:
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// 100 = 1 second with 100hz
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if (flip_timer < 100) {
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// we no longer need to adjust the roll_rate.
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// It will be handled by normal flight control loops
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// increase throttle to gain any lost alitude
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if(ap.manual_throttle){
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set_throttle_out(g.rc_3.control_in + AAP_THR_INC, false);
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}
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flip_timer++;
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}else{
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Log_Write_Event(DATA_END_FLIP);
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ap.do_flip = false;
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flip_state = 0;
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}
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break;
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}
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}
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