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main.py
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main.py
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import serial, argparse, binascii, struct, sys, time, os
import serial.tools.list_ports
import vgamepad as vg
ERROR_PORT_MESSAGE = "ERROR: Something went wrong, maybe this port does not belong to the DJI Mini 2 Remote"
maxValue = 32768
gamepad = vg.VDS4Gamepad()
def calc_checksum(packet, plength):
crc = [0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78]
# Seeds
# v = 0x1012 #Naza M
# v = 0x1013 #Phantom 2
# v = 0x7000 #Naza M V2
v = 0x3692 #P3/P4/Mavic
for i in range(0, plength):
vv = v >> 8
v = vv ^ crc[((packet[i] ^ v) & 0xFF)]
return v
def calc_pkt55_hdr_checksum(seed, packet, plength):
arr_2A103 = [0x00,0x5E,0xBC,0xE2,0x61,0x3F,0xDD,0x83,0xC2,0x9C,0x7E,0x20,0xA3,0xFD,0x1F,0x41,
0x9D,0xC3,0x21,0x7F,0xFC,0xA2,0x40,0x1E,0x5F,0x01,0xE3,0xBD,0x3E,0x60,0x82,0xDC,
0x23,0x7D,0x9F,0xC1,0x42,0x1C,0xFE,0xA0,0xE1,0xBF,0x5D,0x03,0x80,0xDE,0x3C,0x62,
0xBE,0xE0,0x02,0x5C,0xDF,0x81,0x63,0x3D,0x7C,0x22,0xC0,0x9E,0x1D,0x43,0xA1,0xFF,
0x46,0x18,0xFA,0xA4,0x27,0x79,0x9B,0xC5,0x84,0xDA,0x38,0x66,0xE5,0xBB,0x59,0x07,
0xDB,0x85,0x67,0x39,0xBA,0xE4,0x06,0x58,0x19,0x47,0xA5,0xFB,0x78,0x26,0xC4,0x9A,
0x65,0x3B,0xD9,0x87,0x04,0x5A,0xB8,0xE6,0xA7,0xF9,0x1B,0x45,0xC6,0x98,0x7A,0x24,
0xF8,0xA6,0x44,0x1A,0x99,0xC7,0x25,0x7B,0x3A,0x64,0x86,0xD8,0x5B,0x05,0xE7,0xB9,
0x8C,0xD2,0x30,0x6E,0xED,0xB3,0x51,0x0F,0x4E,0x10,0xF2,0xAC,0x2F,0x71,0x93,0xCD,
0x11,0x4F,0xAD,0xF3,0x70,0x2E,0xCC,0x92,0xD3,0x8D,0x6F,0x31,0xB2,0xEC,0x0E,0x50,
0xAF,0xF1,0x13,0x4D,0xCE,0x90,0x72,0x2C,0x6D,0x33,0xD1,0x8F,0x0C,0x52,0xB0,0xEE,
0x32,0x6C,0x8E,0xD0,0x53,0x0D,0xEF,0xB1,0xF0,0xAE,0x4C,0x12,0x91,0xCF,0x2D,0x73,
0xCA,0x94,0x76,0x28,0xAB,0xF5,0x17,0x49,0x08,0x56,0xB4,0xEA,0x69,0x37,0xD5,0x8B,
0x57,0x09,0xEB,0xB5,0x36,0x68,0x8A,0xD4,0x95,0xCB,0x29,0x77,0xF4,0xAA,0x48,0x16,
0xE9,0xB7,0x55,0x0B,0x88,0xD6,0x34,0x6A,0x2B,0x75,0x97,0xC9,0x4A,0x14,0xF6,0xA8,
0x74,0x2A,0xC8,0x96,0x15,0x4B,0xA9,0xF7,0xB6,0xE8,0x0A,0x54,0xD7,0x89,0x6B,0x35]
chksum = seed
for i in range(0, plength):
chksum = arr_2A103[((packet[i] ^ chksum) & 0xFF)];
return chksum
def send_duml(s, source, target, cmd_type, cmd_set, cmd_id, payload = None):
global sequence_number
sequence_number = 0x34eb
packet = bytearray.fromhex(u'55')
length = 13
if payload is not None:
length = length + len(payload)
if length > 0x3ff:
print("Packet too large")
exit(1)
packet += struct.pack('B', length & 0xff)
packet += struct.pack('B', (length >> 8) | 0x4) # MSB of length and protocol version
hdr_crc = calc_pkt55_hdr_checksum(0x77, packet, 3)
packet += struct.pack('B', hdr_crc)
packet += struct.pack('B', source)
packet += struct.pack('B', target)
packet += struct.pack('<H', sequence_number)
packet += struct.pack('B', cmd_type)
packet += struct.pack('B', cmd_set)
packet += struct.pack('B', cmd_id)
if payload is not None:
packet += payload
crc = calc_checksum(packet, len(packet))
packet += struct.pack('<H',crc)
s.write(packet)
#print(' '.join(format(x, '02x') for x in packet))
sequence_number += 1
def get_serial_ports():
ports = serial.tools.list_ports.comports()
return [port.device for port in ports]
input("Press ENTER when the DJI Mini 2 Remove is connected via USB\n")
serial_ports = get_serial_ports()
if serial_ports:
print("Available Serial Ports:")
for port in serial_ports:
print(port)
selected_port = input("Choose a port by typing the name (Example: COM4): ")
else:
print("ERROR: No serial ports found. The DJI Mini 2 Remote is NOT connected")
exit(0)
# Open serial.
try:
s = serial.Serial(port=selected_port, baudrate=115200, timeout=3)
print('Opened serial device:', s.name)
except serial.SerialException as e:
print('Could not open serial device:', e)
exit(1)
# Stylistic: Newline for spacing.
print('\nPress Ctrl+C (or interrupt) to stop.\n')
# Process input (min 364, center 1024, max 1684) -> (min -1, center 0, max 1)
def parseInput(input, name):
output = (int.from_bytes(input, byteorder='little') - 364) / (1684 - 364) * (1 - (-1)) + (-1)
return output
st = {"rh": 0, "rv": 0, "lh": 0, "lv": 0}
try:
# enable simulator mode for RC (without this stick positions are sent very slow by RC)
send_duml(s, 0x0a, 0x06, 0x40, 0x06, 0x24, bytearray.fromhex('01'))
while True:
send_duml(s, 0x0a, 0x06, 0x40, 0x06, 0x01, bytearray.fromhex(''))
# read duml
buffer = bytearray.fromhex('')
while True:
b = s.read(1)
if b:
if b == bytearray.fromhex('55'):
buffer.extend(b)
ph = s.read(2)
buffer.extend(ph)
ph = struct.unpack('<H', ph)[0]
pl = 0b0000001111111111 & ph
pv = 0b1111110000000000 & ph
pv = pv >> 10
pc = s.read(1)
buffer.extend(pc)
pd = s.read(pl - 4)
buffer.extend(pd)
break
else:
print(ERROR_PORT_MESSAGE)
exit(0)
else:
print(ERROR_PORT_MESSAGE)
exit(0)
data = buffer
# Reverse-engineered. Controller input seems to always be len 38.
if len(data) == 38:
# Reverse-engineered
st["rh"] = parseInput(data[13:15], 'lv')
st["rv"] = parseInput(data[16:18], 'lh')
st["lv"] = parseInput(data[19:21], 'rv')
st["lh"] = parseInput(data[22:24], 'rh')
camera = parseInput(data[25:27], 'cam')
print("Throttle: " + str(st["lv"]))
print("Yaw: " + str(st["lh"]))
print("Roll: " + str(st["rh"]))
print("Pitch: " + str(st["rv"]))
print("Cam: " + str(camera))
gamepad.left_joystick_float(x_value_float=st["lh"], y_value_float=st["lv"])
gamepad.right_joystick_float(x_value_float=st["rh"], y_value_float=st["rv"])
gamepad.update()
except serial.SerialException as e:
print('\n\nCould not read/write:', e)
exit(0)
except KeyboardInterrupt:
print('\n\nDetected keyboard interrupt.')
exit(0)
pass
print('Stopping.')