A.R.Drone Developer Guide - Abstract

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32 6.5 AT Commands summary AT command Arguments 1 Description AT*REF input Takeoff/Landing/Emergency stop command AT*PCMD flag, roll, pitch, Move the drone AT*FTRIM gaz, yaw - Sets the reference for the horizontal plane AT*CONFIG key, value Configuration of the AR.Drone AT*LED animation, fre- Set a led animation on the AR.Drone AT*ANIM quency, duration animation, duration Set a flight animation on the AR.Drone AT*COMWDG - Reset the communication watchdog 1 apart from the sequence number
6.6 Commands description AT*REF Summary : Controls the basic behaviour of the drone (take-off/landing, emergency stop/reset) Corresponding API function : ardrone_tool_set_ui_pad_start Corresponding API function : ardrone_tool_set_ui_pad_select Syntax : AT*REF=%d,%d Argument 1 : the sequence number Argument 2 : an integer value in [0..2 32 − 1], representing a 32 bit-wide bit-field controlling the drone. Description : Send this command to control the basic behaviour of the drone. With SDK version 1.5, only bits 8 and 9 are used in the control bit-field. Bits 18, 20, 22, 24 and 28 should be set to 1. Other bits should be set to 0. Bit 9 usages : Bits 31 .. 10 9 8 7 .. 0 Usage Do not use Takeoff/Land Emergency Do not use (aka. "start bit") (aka. "select bit") Send a command with this bit set to 1 to make the drone take-off. This command should be repeated until the drone state in the navdata shows that drone actually took off. If no other command is supplied, the drone enters a hovering mode and stays still at approximately 1 meter above ground. Send a command with this bit set to 0 to make the drone land. This command should be repeated until the drone state in the navdata shows that drone actually landed, and should be sent as a safety whenever an abnormal situation is detected. After the first start AT-Command, the drone is in the taking-Off state, but still accepts other commands. It means that while the drone is rising in the air to the "1-meterhigh-hovering state", the user can send orders to move or rotate it. Bit 8 usages : When the drone is a "normal" state (flying or waiting on the ground), sending a command with this bit set to 1 (ie. sending an "emergency order") makes the drone enter an emergency mode. Engines are cut-off no matter the drone state. (ie. the drone crashes, potentially violently). When the drone is in an emergency mode (following a previous emergency order or a crash), sending a command with this bit set to 1 (ie. sending an "emergency order") makes the drone resume to a normal state (allowing it to take-off again), at the condition the cause of the emergency was solved. Send an AT*REF command with this bit set to 0 to make the drone consider following "emergency orders" commands (this prevents consecutive "emergency orders" from flip-flopping the drone state between emergency and normal states). 33
Page 1 and 2: Developer Guide SDK 1.6
Page 3 and 4: Contents A.R.Drone Developer Guide
Page 5 and 6: GENERAL:navdata_options . . . . . .
Page 7: Part I SDK documentation 1
Page 10 and 11: 4 • an open-source iPhone game ex
Page 12 and 13: 6 (a) Throttle (b) Roll (c) Pitch (
Page 14 and 15: 8 2.4 LiPo batteries (a) Ultrasound
Page 16 and 17: 10 2.8 Video streaming and tags det
Page 19 and 20: 3 AR.Drone SDK Overview This SDK al
Page 21 and 22: Let’s now detail the ARDroneTool
Page 23 and 24: 4 ARDroneLIB and ARDroneTool functi
Page 25: The flags argument is a bitfiels co
Page 28 and 29: 22 5.2 Customizing the client initi
Page 30 and 31: 24 Listing 5.4: Example of navdata
Page 32 and 33: 26 Listing 5.6: The video pipeline
Page 34 and 35: 28 Once these functions are written
Page 36 and 37: 30 6.1 AT Commands syntax Strings a
Page 40 and 41: 34 Note : The names "start" and "se
Page 42 and 43: 36 AT*FTRIM Summary : Flat trims -
Page 44 and 45: 38 AT*LED Summary : Sets the drone
Page 46 and 47: 40 All the blocks share this common
Page 48 and 49: 42 7.1.3 Augmented reality data str
Page 50 and 51: 44 RGB image Y image CB image CR im
Page 52 and 53: 46 7.2.1.4 Picture resolution (PRES
Page 54 and 55: 48 • Bit 4 : 1 means there is non
Page 56 and 57: 50 • Initialize the counter of su
Page 58 and 59: 52 • Step 3, remaining data (DC v
Page 61 and 62: 8 Drone Configuration The drone beh
Page 63 and 64: PIC:ultrasound_freq = 8 PIC:ultraso
Page 65 and 66: 8.3 General configuration All the c
Page 67 and 68: GENERAL:video_enable Read/Write Des
Page 69 and 70: CONTROL:control_level Read/Write De
Page 71 and 72: setting. AT command example : AT*CO
Page 73 and 74: CONTROL:outdoor_control_vz_max Read
Page 75 and 76: The UDP socket port where the AT*co
Page 77 and 78: 8.7 Video configuration VIDEO:camif
Page 79 and 80: 8.8 Leds configuration LEDS:leds_an
Page 81 and 82: DETECT:detections_select_h Descript
Page 83: 8.10 SYSLOG section This section is
Page 87: Part II Tutorials 81
Page 91 and 92:
11 Building the Linux Examples The
Page 93 and 94:
You will see a list of axes and but
Page 95 and 96:
11.6 Run the Navigation program Fir
Page 97 and 98:
12 Building the Windows Example The
Page 99 and 100:
12.2 Required settings in the sourc
Page 101:
The example is basic one which simp
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A.R.Drone Developer Guide - Abstract

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