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Rev | Author | Line No. | Line |
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552 | fredericg | 1 | #! /usr/bin/env python |
2 | |||
3 | # |
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4 | # Mikrokopter Serial protocol |
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5 | # |
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6 | # Author: FredericG |
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7 | # |
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8 | |||
9 | import os |
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10 | import glob |
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11 | import serial |
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12 | import time |
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13 | import traceback |
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14 | |||
15 | class MkException(Exception): |
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16 | pass |
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17 | |||
18 | class InvalidMsg(MkException): |
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19 | def __str__(self): |
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20 | return "Invalid message" |
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21 | |||
22 | class CrcError(MkException): |
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23 | def __str__(self): |
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24 | return "CRC error" |
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25 | |||
26 | class InvalidArguments(MkException): |
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27 | def __str__(self): |
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28 | return "Invalid Arguments" |
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29 | |||
30 | class InvalidMsgType(MkException): |
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31 | def __str__(self): |
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32 | return "Invalid Message type" |
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696 | FredericG | 33 | |
34 | class InvalidMsgLen(MkException): |
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35 | def __str__(self): |
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36 | return "Invalid Message Length" |
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552 | fredericg | 37 | |
38 | class NoResponse(MkException): |
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39 | def __init__(self, cmd): |
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40 | self.cmd = cmd |
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41 | |||
42 | def __str__(self): |
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43 | return "No Reponse. Waiting for \"%s\" message" % self.cmd |
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44 | |||
45 | pass |
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46 | |||
47 | def calcCrcBytes(str): |
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48 | crc = 0 |
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49 | for c in str: |
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50 | crc += ord(c) |
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51 | crc &= 0xfff |
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52 | return (chr(crc/64+ord('=')), chr(crc%64+ord('='))) |
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53 | |||
54 | |||
55 | class MkMsg: |
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56 | def __init__(self, msg=None, address=None, cmd=None, data=None): |
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57 | if (msg != None): |
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58 | # Create instance based on received message |
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697 | FredericG | 59 | self.parseUartLine(msg) |
552 | fredericg | 60 | elif (address != None and cmd != None and data != None): |
61 | # Create instance based on address, command and data |
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62 | self.address = address |
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63 | self.cmd = cmd |
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64 | self.data = data |
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65 | else: |
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66 | # Cannot create instance |
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67 | raise InvalidArguments |
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68 | |||
697 | FredericG | 69 | def generateUartLine(self): |
552 | fredericg | 70 | msg = "" |
71 | |||
72 | # make header |
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73 | msg += '#' |
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74 | msg += chr(self.address+ord('a')) |
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75 | msg += self.cmd |
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76 | |||
77 | # add data |
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78 | done = False |
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79 | i = 0 |
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80 | while (i<len(self.data)) and not done: |
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81 | a = 0 |
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82 | b = 0 |
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83 | c = 0 |
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84 | try: |
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85 | a = self.data[i] |
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86 | b = self.data[i+1] |
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87 | c = self.data[i+2] |
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88 | i = i + 3 |
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89 | except IndexError: |
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90 | done = True |
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91 | msg += chr(ord('=') + (a >> 2)) |
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92 | msg += chr(ord('=') + (((a & 0x03) << 4) | ((b & 0xf0) >> 4))) |
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93 | msg += chr(ord('=') + (((b & 0x0f) << 2) | ((c & 0xc0) >> 6))) |
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94 | msg += chr(ord('=') + ( c & 0x3f)) |
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95 | |||
96 | # add crc and NL |
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97 | crc1,crc2 = calcCrcBytes(msg) |
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98 | msg += crc1 + crc2 |
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99 | msg += '\r' |
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100 | return msg |
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101 | |||
102 | |||
697 | FredericG | 103 | def parseUartLine(self, msg): |
552 | fredericg | 104 | if len(msg)<6: |
105 | raise InvalidMsg() |
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106 | if (msg[0] != '#'): |
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107 | raise InvalidMsg() |
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108 | if (msg[-1] != '\r'): |
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109 | raise InvalidMsg() |
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110 | |||
111 | self.address = ord(msg[1]) |
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112 | self.cmd = msg[2] |
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113 | |||
114 | data64 = map(ord, msg[3:-3]) # last 3 bytes are CRC and \n |
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115 | |||
116 | done = False |
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117 | i = 0 |
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118 | self.data = [] |
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119 | while (i<len(data64)) and not done: |
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120 | a = 0 |
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121 | b = 0 |
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122 | c = 0 |
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123 | d = 0 |
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124 | try: |
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125 | a = data64[i] - ord('=') |
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126 | b = data64[i+1] - ord('=') |
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127 | c = data64[i+2] - ord('=') |
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128 | d = data64[i+3] - ord('=') |
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129 | i = i + 4 |
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130 | except IndexError: |
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131 | done = True |
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132 | |||
133 | self.data.append((a << 2)&0xFF | (b >> 4)) |
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134 | self.data.append(((b & 0x0f) << 4)&0xFF | (c >> 2)); |
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135 | self.data.append(((c & 0x03) << 6)&0xFF | d); |
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136 | |||
137 | crc1,crc2 = calcCrcBytes(msg[:-3]) |
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138 | if (crc1 != msg[-3] or crc2 != msg[-2]): |
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139 | #print msg |
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140 | raise CrcError |
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141 | |||
142 | #print "crc= %x %x %x %x" % ( crc1, crc2, (ord(msg[-3])-ord('=')), (ord(msg[-2])-ord('='))) |
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143 | |||
144 | |||
145 | def data2SignedInt(self, index): |
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146 | int = self.data[index]+self.data[index+1]*256 |
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147 | if (int > 0xFFFF/2): |
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148 | int -= 0xFFFF |
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149 | return int |
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150 | |||
696 | FredericG | 151 | class SettingsMsg: |
152 | DATENREVISION = 80 |
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153 | IDX_INDEX = 0 |
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154 | IDX_STICK_P = 1 + 19 |
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155 | IDX_STICK_D = 1 + 20 |
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716 | FredericG | 156 | IDX_GYRO_P = 1 + 26 |
157 | IDX_GYRO_I = 1 + 27 |
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158 | IDX_GYRO_D = 1 + 28 |
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159 | IDX_I_FACTOR = 1 + 35 |
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696 | FredericG | 160 | IDX_NAME = 1 + 90 |
161 | |||
162 | def __init__(self, msg): |
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163 | if (msg.cmd != 'Q'): |
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164 | raise InvalidMsgType |
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165 | if len(msg.data) != 105: |
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166 | raise InvalidMsgLen |
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167 | self.msg = msg |
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168 | |||
169 | def getSettings(self): |
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170 | return self.msg.data |
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171 | |||
172 | def getIndex(self): |
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173 | return self.getSetting(SettingsMsg.IDX_INDEX) |
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174 | |||
175 | def getSetting(self, settingIndex): |
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176 | return self.msg.data[settingIndex] |
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177 | |||
178 | def getName(self): |
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179 | name = "" |
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180 | for i in self.msg.data[SettingsMsg.IDX_NAME:]: |
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181 | if i==0: |
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182 | break |
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183 | name += chr(i) |
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184 | return name |
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185 | |||
186 | def setSetting(self, settingIndex, value): |
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187 | self.msg.data[settingIndex] = value |
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552 | fredericg | 188 | |
696 | FredericG | 189 | |
552 | fredericg | 190 | class DebugDataMsg: |
705 | FredericG | 191 | IDX_ANALOG_ANGLENICK= 2+2*0 |
192 | IDX_ANALOG_ANGLEROLL= 2+2*1 |
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552 | fredericg | 193 | IDX_ANALOG_ACCNICK = 2+2*2 |
194 | IDX_ANALOG_ACCROLL = 2+2*3 |
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195 | IDX_ANALOG_COMPASS = 2+2*3 |
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196 | IDX_ANALOG_VOLTAGE = 2+2*9 |
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197 | |||
198 | def __init__(self, msg): |
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199 | if (msg.cmd != 'D'): |
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200 | raise InvalidMsgType |
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201 | self.msg = msg |
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202 | |||
705 | FredericG | 203 | def getAngleNick(self): |
204 | return self.msg.data2SignedInt(DebugDataMsg.IDX_ANALOG_ANGLENICK) |
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205 | |||
206 | def getAngleRoll(self): |
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207 | return self.msg.data2SignedInt(DebugDataMsg.IDX_ANALOG_ANGLEROLL) |
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208 | |||
552 | fredericg | 209 | def getAccNick(self): |
696 | FredericG | 210 | return self.msg.data2SignedInt(DebugDataMsg.IDX_ANALOG_ACCNICK) |
552 | fredericg | 211 | |
212 | def getAccRoll(self): |
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696 | FredericG | 213 | return self.msg.data2SignedInt(DebugDataMsg.IDX_ANALOG_ACCROLL) |
552 | fredericg | 214 | |
215 | def getCompassHeading(self): |
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696 | FredericG | 216 | return self.msg.data2SignedInt(DebugDataMsg.IDX_ANALOG_COMPASS) |
552 | fredericg | 217 | |
218 | def getVoltage(self): |
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696 | FredericG | 219 | return float(self.msg.data2SignedInt(DebugDataMsg.IDX_ANALOG_VOLTAGE))/10 |
552 | fredericg | 220 | |
221 | class VibrationDataMsg: |
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222 | def __init__(self, msg): |
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223 | if (msg.cmd != 'F'): |
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224 | raise InvalidMsgType |
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225 | self.msg = msg |
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226 | |||
227 | def getData(self): |
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228 | data = [] |
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563 | FredericG | 229 | for i in range(0,50): |
552 | fredericg | 230 | data.append(self.msg.data2SignedInt(2*i)) |
231 | return data |
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232 | |||
233 | class VersionMsg: |
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234 | def __init__(self, msg): |
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235 | if (msg.cmd != 'V'): |
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236 | raise InvalidMsgType |
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237 | self.msg = msg |
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238 | |||
239 | def getVersion(self): |
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240 | return (self.msg.data[0], self.msg.data[1]) |
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241 | |||
242 | class MkComm: |
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653 | FredericG | 243 | ADDRESS_ALL = 0 |
244 | ADDRESS_FC = 1 |
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245 | ADDRESS_NC = 2 |
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246 | ADDRESS_MK3MAG = 3 |
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247 | |||
552 | fredericg | 248 | def __init__(self, printDebugMsg=False): |
249 | #self.logfile = open('mklog.txt', "rbU") |
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250 | |||
251 | self.serPort = None |
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252 | self.printDebugMsg = printDebugMsg |
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253 | |||
254 | msg = MkMsg(address=0, cmd='v', data=[]) |
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697 | FredericG | 255 | self.getVersionMsgLn = msg.generateUartLine() |
552 | fredericg | 256 | msg = MkMsg(address=0, cmd='d', data=[500]) |
697 | FredericG | 257 | self.getDebugMsgLn = msg.generateUartLine() |
552 | fredericg | 258 | |
259 | |||
260 | def open(self, comPort): |
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708 | FredericG | 261 | self.serPort = serial.Serial(comPort, 57600, timeout=0.5, rtscts=1) |
552 | fredericg | 262 | if not self.serPort.isOpen(): |
263 | raise IOError("Failed to open serial port") |
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264 | |||
563 | FredericG | 265 | def close(self): |
266 | self.serPort.close() |
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267 | |||
552 | fredericg | 268 | def isOpen(self): |
269 | return self.serPort != None |
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270 | |||
271 | def sendLn(self, ln): |
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272 | self.serPort.write(ln) |
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273 | |||
274 | def waitForLn(self): |
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275 | return self.serPort.readline(eol='\r') |
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276 | |||
702 | FredericG | 277 | def waitForMsg(self, cmd2wait4, timeout=0.5): |
552 | fredericg | 278 | msg = None |
279 | done = False |
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702 | FredericG | 280 | if self.printDebugMsg: print "[Debug] =>Wait4 %s TO=%.1fs" % (cmd2wait4, timeout) |
281 | startTime = time.clock() |
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552 | fredericg | 282 | while (not done): |
283 | line = self.waitForLn() |
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284 | try: |
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285 | msg = MkMsg(msg=line) |
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702 | FredericG | 286 | if self.printDebugMsg: print "[Debug] msg %s" % msg.cmd |
552 | fredericg | 287 | if (msg.cmd == cmd2wait4): |
288 | done = True |
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289 | except InvalidMsg: |
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702 | FredericG | 290 | if self.printDebugMsg: print "[Debug] no valid msg" |
291 | |||
292 | if ((time.clock()-startTime) > timeout): |
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293 | raise NoResponse(cmd2wait4) |
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294 | if self.printDebugMsg: print "[Debug] Done: %.1fs" % (time.clock()-startTime) |
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552 | fredericg | 295 | return msg |
698 | FredericG | 296 | |
297 | def sendMsg(self, msg): |
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298 | self.sendLn(msg.generateUartLine()) |
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552 | fredericg | 299 | |
653 | FredericG | 300 | def sendNCRedirectUartFromFC(self): |
301 | self.serPort.flushInput() |
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302 | msg = MkMsg(address=MkComm.ADDRESS_NC, cmd='u', data=[0]) |
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698 | FredericG | 303 | self.sendMsg(msg) |
653 | FredericG | 304 | time.sleep(.5) |
696 | FredericG | 305 | # No reply expected... |
306 | |||
307 | def sendSettings(self, settings): |
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308 | msg = MkMsg(address=MkComm.ADDRESS_FC, cmd='s', data=settings) |
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698 | FredericG | 309 | self.sendMsg(msg) |
702 | FredericG | 310 | #time.sleep(1) |
311 | msg = self.waitForMsg('S', timeout=2) |
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696 | FredericG | 312 | |
552 | fredericg | 313 | def getDebugMsg(self): |
314 | self.serPort.flushInput() |
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315 | self.sendLn(self.getDebugMsgLn) |
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316 | msg = self.waitForMsg('D') |
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317 | msg = DebugDataMsg(msg) |
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318 | return msg |
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696 | FredericG | 319 | |
320 | def getSettingsMsg(self, index=0xFF): |
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321 | self.serPort.flushInput() |
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322 | msg = MkMsg(address=MkComm.ADDRESS_FC, cmd='q', data=[index]) |
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698 | FredericG | 323 | self.sendMsg(msg) |
696 | FredericG | 324 | msg = self.waitForMsg('Q') |
325 | msg = SettingsMsg(msg) |
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326 | return msg |
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552 | fredericg | 327 | |
328 | def getVersionMsg(self): |
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329 | self.sendLn(self.getVersionMsgLn) |
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330 | msg = self.waitForMsg('V') |
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331 | msg = VersionMsg(msg) |
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332 | return msg |
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333 | |||
334 | def setMotorTest(self, motorSpeeds): |
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653 | FredericG | 335 | msg = MkMsg(address=MkComm.ADDRESS_FC, cmd='t', data=motorSpeeds) |
698 | FredericG | 336 | self.sendMsg(msg) |
552 | fredericg | 337 | |
613 | FredericG | 338 | def doVibrationTest(self, nbSamples, channel): |
552 | fredericg | 339 | data = [] |
563 | FredericG | 340 | for i in range(0,(min(nbSamples,1000)/50)): |
653 | FredericG | 341 | msg = MkMsg(address=MkComm.ADDRESS_FC, cmd='f', data=[channel, i]) |
698 | FredericG | 342 | self.sendMsg(msg) |
552 | fredericg | 343 | msg = self.waitForMsg('F') |
344 | msg = VibrationDataMsg(msg) |
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345 | data += msg.getData() |
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346 | |||
618 | FredericG | 347 | # FIXE: should be fixed in the FC code |
348 | data[0]=data[1] |
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552 | fredericg | 349 | return data |
350 | |||
705 | FredericG | 351 | def recordDbgMsg(self, samplePeriod, nbSamples): |
352 | result = [] |
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353 | self.serPort.flushInput() |
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354 | msg = MkMsg(address=0, cmd='d', data=[int(samplePeriod*100)]) |
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355 | self.sendMsg(msg) |
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356 | for i in range(nbSamples): |
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357 | print i |
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358 | msg = self.waitForMsg('D', timeout=samplePeriod+1) |
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359 | msg = DebugDataMsg(msg) |
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360 | result.append(msg) |
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361 | return result |
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552 | fredericg | 362 | |
363 | |||
364 | |||
365 | if __name__ == '__main__': |
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366 | try: |
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367 | comm = MkComm() |
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702 | FredericG | 368 | comm.printDebugMsg = True |
708 | FredericG | 369 | comm.open(comPort="COM40") |
552 | fredericg | 370 | |
371 | msg = comm.getVersionMsg() |
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372 | print "Version: %d.%d" % msg.getVersion() |
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696 | FredericG | 373 | |
705 | FredericG | 374 | # msg = comm.getSettingsMsg() |
375 | # print "Index=",msg.getIndex() |
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376 | # print "Name=",msg.getName() |
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377 | # print "StickP=",msg.getSetting(SettingsMsg.IDX_STICK_P) |
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378 | # print "StickD=",msg.getSetting(SettingsMsg.IDX_STICK_D) |
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379 | # |
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380 | # msg.setSetting(SettingsMsg.IDX_STICK_P, msg.getSetting(SettingsMsg.IDX_STICK_P)+1) |
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381 | # comm.sendSettings(msg.getSettings()) |
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696 | FredericG | 382 | |
705 | FredericG | 383 | messages = comm.recordDbgMsg(0.05, 20) |
384 | for msg in messages: |
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385 | print msg.getAngleRoll() |
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702 | FredericG | 386 | |
705 | FredericG | 387 | |
552 | fredericg | 388 | |
389 | except Exception,e: |
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390 | print |
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391 | print "An error occured: ", e |
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392 | print |
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393 | traceback.print_exc() |
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394 | raw_input("Press ENTER, the application will close") |