1 | /*
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2 | Firmata is a generic protocol for communicating with microcontrollers
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3 | from software on a host computer. It is intended to work with
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4 | any host computer software package.
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5 |
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6 | To download a host software package, please clink on the following link
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7 | to open the list of Firmata client libraries your default browser.
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8 |
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9 | https://github.com/firmata/arduino#firmata-client-libraries
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10 |
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11 | Copyright (C) 2006-2008 Hans-Christoph Steiner. All rights reserved.
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12 | Copyright (C) 2010-2011 Paul Stoffregen. All rights reserved.
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13 | Copyright (C) 2009 Shigeru Kobayashi. All rights reserved.
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14 | Copyright (C) 2009-2016 Jeff Hoefs. All rights reserved.
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15 | Copyright (C) 2015-2016 Jesse Frush. All rights reserved.
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16 |
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17 | This library is free software; you can redistribute it and/or
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18 | modify it under the terms of the GNU Lesser General Public
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19 | License as published by the Free Software Foundation; either
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20 | version 2.1 of the License, or (at your option) any later version.
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21 |
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22 | See file LICENSE.txt for further informations on licensing terms.
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23 |
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24 | Last updated by Jeff Hoefs: January 10th, 2016
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25 | */
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26 |
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27 | /*
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28 | README
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29 |
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30 | StandardFirmataWiFi is a WiFi server application. You will need a Firmata client library with
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31 | a network transport in order to establish a connection with StandardFirmataWiFi.
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32 |
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33 | To use StandardFirmataWiFi you will need to have one of the following
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34 | boards or shields:
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35 |
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36 | - Arduino WiFi Shield (or clone)
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37 | - Arduino WiFi Shield 101
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38 | - Arduino MKR1000 board (built-in WiFi 101)
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39 | - Adafruit HUZZAH CC3000 WiFi Shield (support coming soon)
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40 |
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41 | Follow the instructions in the wifiConfig.h file (wifiConfig.h tab in Arduino IDE) to
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42 | configure your particular hardware.
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43 |
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44 | Dependencies:
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45 | - WiFi Shield 101 requires version 0.7.0 or higher of the WiFi101 library (available in Arduino
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46 | 1.6.8 or higher, or update the library via the Arduino Library Manager or clone from source:
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47 | https://github.com/arduino-libraries/WiFi101)
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48 |
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49 | In order to use the WiFi Shield 101 with Firmata you will need a board with at least
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50 | 35k of Flash memory. This means you cannot use the WiFi Shield 101 with an Arduino Uno
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51 | or any other ATmega328p-based microcontroller or with an Arduino Leonardo or other
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52 | ATmega32u4-based microcontroller. Some boards that will work are:
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53 |
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54 | - Arduino Zero
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55 | - Arduino Due
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56 | - Arduino 101
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57 | - Arduino Mega
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58 |
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59 | NOTE: If you are using an Arduino WiFi (legacy) shield you cannot use the following pins on
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60 | the following boards. Firmata will ignore any requests to use these pins:
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61 |
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62 | - Arduino Uno or other ATMega328 boards: (D4, D7, D10, D11, D12, D13)
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63 | - Arduino Mega: (D4, D7, D10, D50, D51, D52, D53)
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64 | - Arduino Due, Zero or Leonardo: (D4, D7, D10)
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65 |
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66 | If you are using an Arduino WiFi 101 shield you cannot use the following pins on the following
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67 | boards:
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68 |
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69 | - Arduino Due or Zero: (D5, D7, D10)
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70 | - Arduino Mega: (D5, D7, D10, D50, D52, D53)
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71 | */
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72 |
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73 | #include <Servo.h>
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74 | #include <Wire.h>
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75 | #include <Firmata.h>
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76 |
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77 | /*
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78 | * Uncomment the #define SERIAL_DEBUG line below to receive serial output messages relating to your
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79 | * connection that may help in the event of connection issues. If defined, some boards may not begin
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80 | * executing this sketch until the Serial console is opened.
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81 | */
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82 | //#define SERIAL_DEBUG
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83 | #include "utility/firmataDebug.h"
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84 |
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85 | /*
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86 | * Uncomment the following include to enable interfacing with Serial devices via hardware or
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87 | * software serial. Note that if enabled, this sketch will likely consume too much memory to run on
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88 | * an Arduino Uno or Leonardo or other ATmega328p-based or ATmega32u4-based boards.
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89 | */
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90 | //#include "utility/SerialFirmata.h"
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91 |
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92 | // follow the instructions in wifiConfig.h to configure your particular hardware
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93 | #include "wifiConfig.h"
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94 |
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95 | #define I2C_WRITE B00000000
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96 | #define I2C_READ B00001000
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97 | #define I2C_READ_CONTINUOUSLY B00010000
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98 | #define I2C_STOP_READING B00011000
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99 | #define I2C_READ_WRITE_MODE_MASK B00011000
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100 | #define I2C_10BIT_ADDRESS_MODE_MASK B00100000
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101 | #define I2C_END_TX_MASK B01000000
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102 | #define I2C_STOP_TX 1
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103 | #define I2C_RESTART_TX 0
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104 | #define I2C_MAX_QUERIES 8
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105 | #define I2C_REGISTER_NOT_SPECIFIED -1
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106 |
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107 | // the minimum interval for sampling analog input
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108 | #define MINIMUM_SAMPLING_INTERVAL 1
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109 |
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110 | #define WIFI_MAX_CONN_ATTEMPTS 3
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111 |
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112 | /*==============================================================================
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113 | * GLOBAL VARIABLES
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114 | *============================================================================*/
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115 |
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116 | #ifdef FIRMATA_SERIAL_FEATURE
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117 | SerialFirmata serialFeature;
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118 | #endif
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119 |
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120 | #ifdef STATIC_IP_ADDRESS
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121 | IPAddress local_ip(STATIC_IP_ADDRESS);
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122 | #endif
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123 |
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124 | int wifiConnectionAttemptCounter = 0;
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125 | int wifiStatus = WL_IDLE_STATUS;
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126 |
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127 | /* analog inputs */
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128 | int analogInputsToReport = 0; // bitwise array to store pin reporting
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129 |
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130 | /* digital input ports */
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131 | byte reportPINs[TOTAL_PORTS]; // 1 = report this port, 0 = silence
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132 | byte previousPINs[TOTAL_PORTS]; // previous 8 bits sent
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133 |
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134 | /* pins configuration */
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135 | byte portConfigInputs[TOTAL_PORTS]; // each bit: 1 = pin in INPUT, 0 = anything else
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136 |
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137 | /* timer variables */
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138 | unsigned long currentMillis; // store the current value from millis()
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139 | unsigned long previousMillis; // for comparison with currentMillis
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140 | unsigned int samplingInterval = 19; // how often to sample analog inputs (in ms)
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141 |
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142 | /* i2c data */
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143 | struct i2c_device_info {
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144 | byte addr;
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145 | int reg;
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146 | byte bytes;
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147 | byte stopTX;
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148 | };
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149 |
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150 | /* for i2c read continuous mode */
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151 | i2c_device_info query[I2C_MAX_QUERIES];
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152 |
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153 | byte i2cRxData[64];
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154 | boolean isI2CEnabled = false;
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155 | signed char queryIndex = -1;
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156 | // default delay time between i2c read request and Wire.requestFrom()
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157 | unsigned int i2cReadDelayTime = 0;
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158 |
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159 | Servo servos[MAX_SERVOS];
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160 | byte servoPinMap[TOTAL_PINS];
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161 | byte detachedServos[MAX_SERVOS];
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162 | byte detachedServoCount = 0;
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163 | byte servoCount = 0;
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164 |
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165 | boolean isResetting = false;
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166 |
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167 | /* utility functions */
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168 | void wireWrite(byte data)
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169 | {
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170 | #if ARDUINO >= 100
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171 | Wire.write((byte)data);
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172 | #else
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173 | Wire.send(data);
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174 | #endif
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175 | }
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176 |
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177 | byte wireRead(void)
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178 | {
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179 | #if ARDUINO >= 100
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180 | return Wire.read();
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181 | #else
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182 | return Wire.receive();
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183 | #endif
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184 | }
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185 |
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186 | /*==============================================================================
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187 | * FUNCTIONS
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188 | *============================================================================*/
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189 |
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190 | void attachServo(byte pin, int minPulse, int maxPulse)
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191 | {
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192 | if (servoCount < MAX_SERVOS) {
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193 | // reuse indexes of detached servos until all have been reallocated
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194 | if (detachedServoCount > 0) {
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195 | servoPinMap[pin] = detachedServos[detachedServoCount - 1];
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196 | if (detachedServoCount > 0) detachedServoCount--;
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197 | } else {
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198 | servoPinMap[pin] = servoCount;
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199 | servoCount++;
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200 | }
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201 | if (minPulse > 0 && maxPulse > 0) {
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202 | servos[servoPinMap[pin]].attach(PIN_TO_DIGITAL(pin), minPulse, maxPulse);
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203 | } else {
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204 | servos[servoPinMap[pin]].attach(PIN_TO_DIGITAL(pin));
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205 | }
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206 | } else {
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207 | Firmata.sendString("Max servos attached");
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208 | }
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209 | }
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210 |
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211 | void detachServo(byte pin)
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212 | {
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213 | servos[servoPinMap[pin]].detach();
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214 | // if we're detaching the last servo, decrement the count
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215 | // otherwise store the index of the detached servo
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216 | if (servoPinMap[pin] == servoCount && servoCount > 0) {
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217 | servoCount--;
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218 | } else if (servoCount > 0) {
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219 | // keep track of detached servos because we want to reuse their indexes
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220 | // before incrementing the count of attached servos
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221 | detachedServoCount++;
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222 | detachedServos[detachedServoCount - 1] = servoPinMap[pin];
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223 | }
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224 |
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225 | servoPinMap[pin] = 255;
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226 | }
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227 |
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228 | void readAndReportData(byte address, int theRegister, byte numBytes, byte stopTX) {
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229 | // allow I2C requests that don't require a register read
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230 | // for example, some devices using an interrupt pin to signify new data available
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231 | // do not always require the register read so upon interrupt you call Wire.requestFrom()
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232 | if (theRegister != I2C_REGISTER_NOT_SPECIFIED) {
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233 | Wire.beginTransmission(address);
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234 | wireWrite((byte)theRegister);
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235 | Wire.endTransmission(stopTX); // default = true
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236 | // do not set a value of 0
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237 | if (i2cReadDelayTime > 0) {
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238 | // delay is necessary for some devices such as WiiNunchuck
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239 | delayMicroseconds(i2cReadDelayTime);
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240 | }
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241 | } else {
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242 | theRegister = 0; // fill the register with a dummy value
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243 | }
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244 |
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245 | Wire.requestFrom(address, numBytes); // all bytes are returned in requestFrom
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246 |
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247 | // check to be sure correct number of bytes were returned by slave
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248 | if (numBytes < Wire.available()) {
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249 | Firmata.sendString("I2C: Too many bytes received");
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250 | } else if (numBytes > Wire.available()) {
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251 | Firmata.sendString("I2C: Too few bytes received");
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252 | }
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253 |
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254 | i2cRxData[0] = address;
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255 | i2cRxData[1] = theRegister;
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256 |
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257 | for (int i = 0; i < numBytes && Wire.available(); i++) {
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258 | i2cRxData[2 + i] = wireRead();
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259 | }
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260 |
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261 | // send slave address, register and received bytes
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262 | Firmata.sendSysex(SYSEX_I2C_REPLY, numBytes + 2, i2cRxData);
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263 | }
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264 |
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265 | void outputPort(byte portNumber, byte portValue, byte forceSend)
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266 | {
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267 | // pins not configured as INPUT are cleared to zeros
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268 | portValue = portValue & portConfigInputs[portNumber];
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269 | // only send if the value is different than previously sent
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270 | if (forceSend || previousPINs[portNumber] != portValue) {
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271 | Firmata.sendDigitalPort(portNumber, portValue);
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272 | previousPINs[portNumber] = portValue;
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273 | }
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274 | }
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275 |
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276 | /* -----------------------------------------------------------------------------
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277 | * check all the active digital inputs for change of state, then add any events
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278 | * to the Stream output queue using Stream.write() */
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279 | void checkDigitalInputs(void)
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280 | {
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281 | /* Using non-looping code allows constants to be given to readPort().
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282 | * The compiler will apply substantial optimizations if the inputs
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283 | * to readPort() are compile-time constants. */
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284 | if (TOTAL_PORTS > 0 && reportPINs[0]) outputPort(0, readPort(0, portConfigInputs[0]), false);
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285 | if (TOTAL_PORTS > 1 && reportPINs[1]) outputPort(1, readPort(1, portConfigInputs[1]), false);
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286 | if (TOTAL_PORTS > 2 && reportPINs[2]) outputPort(2, readPort(2, portConfigInputs[2]), false);
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287 | if (TOTAL_PORTS > 3 && reportPINs[3]) outputPort(3, readPort(3, portConfigInputs[3]), false);
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288 | if (TOTAL_PORTS > 4 && reportPINs[4]) outputPort(4, readPort(4, portConfigInputs[4]), false);
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289 | if (TOTAL_PORTS > 5 && reportPINs[5]) outputPort(5, readPort(5, portConfigInputs[5]), false);
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290 | if (TOTAL_PORTS > 6 && reportPINs[6]) outputPort(6, readPort(6, portConfigInputs[6]), false);
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291 | if (TOTAL_PORTS > 7 && reportPINs[7]) outputPort(7, readPort(7, portConfigInputs[7]), false);
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292 | if (TOTAL_PORTS > 8 && reportPINs[8]) outputPort(8, readPort(8, portConfigInputs[8]), false);
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293 | if (TOTAL_PORTS > 9 && reportPINs[9]) outputPort(9, readPort(9, portConfigInputs[9]), false);
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294 | if (TOTAL_PORTS > 10 && reportPINs[10]) outputPort(10, readPort(10, portConfigInputs[10]), false);
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295 | if (TOTAL_PORTS > 11 && reportPINs[11]) outputPort(11, readPort(11, portConfigInputs[11]), false);
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296 | if (TOTAL_PORTS > 12 && reportPINs[12]) outputPort(12, readPort(12, portConfigInputs[12]), false);
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297 | if (TOTAL_PORTS > 13 && reportPINs[13]) outputPort(13, readPort(13, portConfigInputs[13]), false);
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298 | if (TOTAL_PORTS > 14 && reportPINs[14]) outputPort(14, readPort(14, portConfigInputs[14]), false);
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299 | if (TOTAL_PORTS > 15 && reportPINs[15]) outputPort(15, readPort(15, portConfigInputs[15]), false);
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300 | }
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301 |
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302 | // -----------------------------------------------------------------------------
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303 | /* sets the pin mode to the correct state and sets the relevant bits in the
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304 | * two bit-arrays that track Digital I/O and PWM status
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305 | */
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306 | void setPinModeCallback(byte pin, int mode)
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307 | {
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308 | if (Firmata.getPinMode(pin) == PIN_MODE_IGNORE)
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309 | return;
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310 |
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311 | if (Firmata.getPinMode(pin) == PIN_MODE_I2C && isI2CEnabled && mode != PIN_MODE_I2C) {
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312 | // disable i2c so pins can be used for other functions
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313 | // the following if statements should reconfigure the pins properly
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314 | disableI2CPins();
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315 | }
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316 | if (IS_PIN_DIGITAL(pin) && mode != PIN_MODE_SERVO) {
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317 | if (servoPinMap[pin] < MAX_SERVOS && servos[servoPinMap[pin]].attached()) {
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318 | detachServo(pin);
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319 | }
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320 | }
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321 | if (IS_PIN_ANALOG(pin)) {
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322 | reportAnalogCallback(PIN_TO_ANALOG(pin), mode == PIN_MODE_ANALOG ? 1 : 0); // turn on/off reporting
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323 | }
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324 | if (IS_PIN_DIGITAL(pin)) {
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325 | if (mode == INPUT || mode == PIN_MODE_PULLUP) {
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326 | portConfigInputs[pin / 8] |= (1 << (pin & 7));
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327 | } else {
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328 | portConfigInputs[pin / 8] &= ~(1 << (pin & 7));
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329 | }
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330 | }
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331 | Firmata.setPinState(pin, 0);
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332 | switch (mode) {
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333 | case PIN_MODE_ANALOG:
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334 | if (IS_PIN_ANALOG(pin)) {
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335 | if (IS_PIN_DIGITAL(pin)) {
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336 | pinMode(PIN_TO_DIGITAL(pin), INPUT); // disable output driver
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337 | #if ARDUINO <= 100
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338 | // deprecated since Arduino 1.0.1 - TODO: drop support in Firmata 2.6
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339 | digitalWrite(PIN_TO_DIGITAL(pin), LOW); // disable internal pull-ups
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340 | #endif
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341 | }
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342 | Firmata.setPinMode(pin, PIN_MODE_ANALOG);
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343 | }
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344 | break;
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345 | case INPUT:
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346 | if (IS_PIN_DIGITAL(pin)) {
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347 | pinMode(PIN_TO_DIGITAL(pin), INPUT); // disable output driver
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348 | #if ARDUINO <= 100
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349 | // deprecated since Arduino 1.0.1 - TODO: drop support in Firmata 2.6
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350 | digitalWrite(PIN_TO_DIGITAL(pin), LOW); // disable internal pull-ups
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351 | #endif
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352 | Firmata.setPinMode(pin, INPUT);
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353 | }
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354 | break;
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355 | case PIN_MODE_PULLUP:
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356 | if (IS_PIN_DIGITAL(pin)) {
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357 | pinMode(PIN_TO_DIGITAL(pin), INPUT_PULLUP);
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358 | Firmata.setPinMode(pin, PIN_MODE_PULLUP);
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359 | Firmata.setPinState(pin, 1);
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360 | }
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361 | break;
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362 | case OUTPUT:
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363 | if (IS_PIN_DIGITAL(pin)) {
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364 | digitalWrite(PIN_TO_DIGITAL(pin), LOW); // disable PWM
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365 | pinMode(PIN_TO_DIGITAL(pin), OUTPUT);
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366 | Firmata.setPinMode(pin, OUTPUT);
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367 | }
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368 | break;
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369 | case PIN_MODE_PWM:
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370 | if (IS_PIN_PWM(pin)) {
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371 | pinMode(PIN_TO_PWM(pin), OUTPUT);
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372 | analogWrite(PIN_TO_PWM(pin), 0);
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373 | Firmata.setPinMode(pin, PIN_MODE_PWM);
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374 | }
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375 | break;
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376 | case PIN_MODE_SERVO:
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377 | if (IS_PIN_DIGITAL(pin)) {
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378 | Firmata.setPinMode(pin, PIN_MODE_SERVO);
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379 | if (servoPinMap[pin] == 255 || !servos[servoPinMap[pin]].attached()) {
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380 | // pass -1 for min and max pulse values to use default values set
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381 | // by Servo library
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382 | attachServo(pin, -1, -1);
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383 | }
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384 | }
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385 | break;
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386 | case PIN_MODE_I2C:
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387 | if (IS_PIN_I2C(pin)) {
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388 | // mark the pin as i2c
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389 | // the user must call I2C_CONFIG to enable I2C for a device
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390 | Firmata.setPinMode(pin, PIN_MODE_I2C);
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391 | }
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392 | break;
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393 | case PIN_MODE_SERIAL:
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394 | #ifdef FIRMATA_SERIAL_FEATURE
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395 | serialFeature.handlePinMode(pin, PIN_MODE_SERIAL);
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396 | #endif
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397 | break;
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398 | default:
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399 | Firmata.sendString("Unknown pin mode"); // TODO: put error msgs in EEPROM
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400 | }
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401 | // TODO: save status to EEPROM here, if changed
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402 | }
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403 |
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404 | /*
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405 | * Sets the value of an individual pin. Useful if you want to set a pin value but
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406 | * are not tracking the digital port state.
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407 | * Can only be used on pins configured as OUTPUT.
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408 | * Cannot be used to enable pull-ups on Digital INPUT pins.
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409 | */
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410 | void setPinValueCallback(byte pin, int value)
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411 | {
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412 | if (pin < TOTAL_PINS && IS_PIN_DIGITAL(pin)) {
|
---|
413 | if (Firmata.getPinMode(pin) == OUTPUT) {
|
---|
414 | Firmata.setPinState(pin, value);
|
---|
415 | digitalWrite(PIN_TO_DIGITAL(pin), value);
|
---|
416 | }
|
---|
417 | }
|
---|
418 | }
|
---|
419 |
|
---|
420 | void analogWriteCallback(byte pin, int value)
|
---|
421 | {
|
---|
422 | if (pin < TOTAL_PINS) {
|
---|
423 | switch (Firmata.getPinMode(pin)) {
|
---|
424 | case PIN_MODE_SERVO:
|
---|
425 | if (IS_PIN_DIGITAL(pin))
|
---|
426 | servos[servoPinMap[pin]].write(value);
|
---|
427 | Firmata.setPinState(pin, value);
|
---|
428 | break;
|
---|
429 | case PIN_MODE_PWM:
|
---|
430 | if (IS_PIN_PWM(pin))
|
---|
431 | analogWrite(PIN_TO_PWM(pin), value);
|
---|
432 | Firmata.setPinState(pin, value);
|
---|
433 | break;
|
---|
434 | }
|
---|
435 | }
|
---|
436 | }
|
---|
437 |
|
---|
438 | void digitalWriteCallback(byte port, int value)
|
---|
439 | {
|
---|
440 | byte pin, lastPin, pinValue, mask = 1, pinWriteMask = 0;
|
---|
441 |
|
---|
442 | if (port < TOTAL_PORTS) {
|
---|
443 | // create a mask of the pins on this port that are writable.
|
---|
444 | lastPin = port * 8 + 8;
|
---|
445 | if (lastPin > TOTAL_PINS) lastPin = TOTAL_PINS;
|
---|
446 | for (pin = port * 8; pin < lastPin; pin++) {
|
---|
447 | // do not disturb non-digital pins (eg, Rx & Tx)
|
---|
448 | if (IS_PIN_DIGITAL(pin)) {
|
---|
449 | // do not touch pins in PWM, ANALOG, SERVO or other modes
|
---|
450 | if (Firmata.getPinMode(pin) == OUTPUT || Firmata.getPinMode(pin) == INPUT) {
|
---|
451 | pinValue = ((byte)value & mask) ? 1 : 0;
|
---|
452 | if (Firmata.getPinMode(pin) == OUTPUT) {
|
---|
453 | pinWriteMask |= mask;
|
---|
454 | } else if (Firmata.getPinMode(pin) == INPUT && pinValue == 1 && Firmata.getPinState(pin) != 1) {
|
---|
455 | // only handle INPUT here for backwards compatibility
|
---|
456 | #if ARDUINO > 100
|
---|
457 | pinMode(pin, INPUT_PULLUP);
|
---|
458 | #else
|
---|
459 | // only write to the INPUT pin to enable pullups if Arduino v1.0.0 or earlier
|
---|
460 | pinWriteMask |= mask;
|
---|
461 | #endif
|
---|
462 | }
|
---|
463 | Firmata.setPinState(pin, pinValue);
|
---|
464 | }
|
---|
465 | }
|
---|
466 | mask = mask << 1;
|
---|
467 | }
|
---|
468 | writePort(port, (byte)value, pinWriteMask);
|
---|
469 | }
|
---|
470 | }
|
---|
471 |
|
---|
472 |
|
---|
473 | // -----------------------------------------------------------------------------
|
---|
474 | /* sets bits in a bit array (int) to toggle the reporting of the analogIns
|
---|
475 | */
|
---|
476 | //void FirmataClass::setAnalogPinReporting(byte pin, byte state) {
|
---|
477 | //}
|
---|
478 | void reportAnalogCallback(byte analogPin, int value)
|
---|
479 | {
|
---|
480 | if (analogPin < TOTAL_ANALOG_PINS) {
|
---|
481 | if (value == 0) {
|
---|
482 | analogInputsToReport = analogInputsToReport & ~ (1 << analogPin);
|
---|
483 | } else {
|
---|
484 | analogInputsToReport = analogInputsToReport | (1 << analogPin);
|
---|
485 | // prevent during system reset or all analog pin values will be reported
|
---|
486 | // which may report noise for unconnected analog pins
|
---|
487 | if (!isResetting) {
|
---|
488 | // Send pin value immediately. This is helpful when connected via
|
---|
489 | // ethernet, wi-fi or bluetooth so pin states can be known upon
|
---|
490 | // reconnecting.
|
---|
491 | Firmata.sendAnalog(analogPin, analogRead(analogPin));
|
---|
492 | }
|
---|
493 | }
|
---|
494 | }
|
---|
495 | // TODO: save status to EEPROM here, if changed
|
---|
496 | }
|
---|
497 |
|
---|
498 | void reportDigitalCallback(byte port, int value)
|
---|
499 | {
|
---|
500 | if (port < TOTAL_PORTS) {
|
---|
501 | reportPINs[port] = (byte)value;
|
---|
502 | // Send port value immediately. This is helpful when connected via
|
---|
503 | // ethernet, wi-fi or bluetooth so pin states can be known upon
|
---|
504 | // reconnecting.
|
---|
505 | if (value) outputPort(port, readPort(port, portConfigInputs[port]), true);
|
---|
506 | }
|
---|
507 | // do not disable analog reporting on these 8 pins, to allow some
|
---|
508 | // pins used for digital, others analog. Instead, allow both types
|
---|
509 | // of reporting to be enabled, but check if the pin is configured
|
---|
510 | // as analog when sampling the analog inputs. Likewise, while
|
---|
511 | // scanning digital pins, portConfigInputs will mask off values from any
|
---|
512 | // pins configured as analog
|
---|
513 | }
|
---|
514 |
|
---|
515 | /*==============================================================================
|
---|
516 | * SYSEX-BASED commands
|
---|
517 | *============================================================================*/
|
---|
518 |
|
---|
519 | void sysexCallback(byte command, byte argc, byte *argv)
|
---|
520 | {
|
---|
521 | byte mode;
|
---|
522 | byte stopTX;
|
---|
523 | byte slaveAddress;
|
---|
524 | byte data;
|
---|
525 | int slaveRegister;
|
---|
526 | unsigned int delayTime;
|
---|
527 |
|
---|
528 | switch (command) {
|
---|
529 | case I2C_REQUEST:
|
---|
530 | mode = argv[1] & I2C_READ_WRITE_MODE_MASK;
|
---|
531 | if (argv[1] & I2C_10BIT_ADDRESS_MODE_MASK) {
|
---|
532 | Firmata.sendString("10-bit addressing not supported");
|
---|
533 | return;
|
---|
534 | }
|
---|
535 | else {
|
---|
536 | slaveAddress = argv[0];
|
---|
537 | }
|
---|
538 |
|
---|
539 | // need to invert the logic here since 0 will be default for client
|
---|
540 | // libraries that have not updated to add support for restart tx
|
---|
541 | if (argv[1] & I2C_END_TX_MASK) {
|
---|
542 | stopTX = I2C_RESTART_TX;
|
---|
543 | }
|
---|
544 | else {
|
---|
545 | stopTX = I2C_STOP_TX; // default
|
---|
546 | }
|
---|
547 |
|
---|
548 | switch (mode) {
|
---|
549 | case I2C_WRITE:
|
---|
550 | Wire.beginTransmission(slaveAddress);
|
---|
551 | for (byte i = 2; i < argc; i += 2) {
|
---|
552 | data = argv[i] + (argv[i + 1] << 7);
|
---|
553 | wireWrite(data);
|
---|
554 | }
|
---|
555 | Wire.endTransmission();
|
---|
556 | delayMicroseconds(70);
|
---|
557 | break;
|
---|
558 | case I2C_READ:
|
---|
559 | if (argc == 6) {
|
---|
560 | // a slave register is specified
|
---|
561 | slaveRegister = argv[2] + (argv[3] << 7);
|
---|
562 | data = argv[4] + (argv[5] << 7); // bytes to read
|
---|
563 | }
|
---|
564 | else {
|
---|
565 | // a slave register is NOT specified
|
---|
566 | slaveRegister = I2C_REGISTER_NOT_SPECIFIED;
|
---|
567 | data = argv[2] + (argv[3] << 7); // bytes to read
|
---|
568 | }
|
---|
569 | readAndReportData(slaveAddress, (int)slaveRegister, data, stopTX);
|
---|
570 | break;
|
---|
571 | case I2C_READ_CONTINUOUSLY:
|
---|
572 | if ((queryIndex + 1) >= I2C_MAX_QUERIES) {
|
---|
573 | // too many queries, just ignore
|
---|
574 | Firmata.sendString("too many queries");
|
---|
575 | break;
|
---|
576 | }
|
---|
577 | if (argc == 6) {
|
---|
578 | // a slave register is specified
|
---|
579 | slaveRegister = argv[2] + (argv[3] << 7);
|
---|
580 | data = argv[4] + (argv[5] << 7); // bytes to read
|
---|
581 | }
|
---|
582 | else {
|
---|
583 | // a slave register is NOT specified
|
---|
584 | slaveRegister = (int)I2C_REGISTER_NOT_SPECIFIED;
|
---|
585 | data = argv[2] + (argv[3] << 7); // bytes to read
|
---|
586 | }
|
---|
587 | queryIndex++;
|
---|
588 | query[queryIndex].addr = slaveAddress;
|
---|
589 | query[queryIndex].reg = slaveRegister;
|
---|
590 | query[queryIndex].bytes = data;
|
---|
591 | query[queryIndex].stopTX = stopTX;
|
---|
592 | break;
|
---|
593 | case I2C_STOP_READING:
|
---|
594 | byte queryIndexToSkip;
|
---|
595 | // if read continuous mode is enabled for only 1 i2c device, disable
|
---|
596 | // read continuous reporting for that device
|
---|
597 | if (queryIndex <= 0) {
|
---|
598 | queryIndex = -1;
|
---|
599 | } else {
|
---|
600 | queryIndexToSkip = 0;
|
---|
601 | // if read continuous mode is enabled for multiple devices,
|
---|
602 | // determine which device to stop reading and remove it's data from
|
---|
603 | // the array, shifiting other array data to fill the space
|
---|
604 | for (byte i = 0; i < queryIndex + 1; i++) {
|
---|
605 | if (query[i].addr == slaveAddress) {
|
---|
606 | queryIndexToSkip = i;
|
---|
607 | break;
|
---|
608 | }
|
---|
609 | }
|
---|
610 |
|
---|
611 | for (byte i = queryIndexToSkip; i < queryIndex + 1; i++) {
|
---|
612 | if (i < I2C_MAX_QUERIES) {
|
---|
613 | query[i].addr = query[i + 1].addr;
|
---|
614 | query[i].reg = query[i + 1].reg;
|
---|
615 | query[i].bytes = query[i + 1].bytes;
|
---|
616 | query[i].stopTX = query[i + 1].stopTX;
|
---|
617 | }
|
---|
618 | }
|
---|
619 | queryIndex--;
|
---|
620 | }
|
---|
621 | break;
|
---|
622 | default:
|
---|
623 | break;
|
---|
624 | }
|
---|
625 | break;
|
---|
626 | case I2C_CONFIG:
|
---|
627 | delayTime = (argv[0] + (argv[1] << 7));
|
---|
628 |
|
---|
629 | if (delayTime > 0) {
|
---|
630 | i2cReadDelayTime = delayTime;
|
---|
631 | }
|
---|
632 |
|
---|
633 | if (!isI2CEnabled) {
|
---|
634 | enableI2CPins();
|
---|
635 | }
|
---|
636 |
|
---|
637 | break;
|
---|
638 | case SERVO_CONFIG:
|
---|
639 | if (argc > 4) {
|
---|
640 | // these vars are here for clarity, they'll optimized away by the compiler
|
---|
641 | byte pin = argv[0];
|
---|
642 | int minPulse = argv[1] + (argv[2] << 7);
|
---|
643 | int maxPulse = argv[3] + (argv[4] << 7);
|
---|
644 |
|
---|
645 | if (IS_PIN_DIGITAL(pin)) {
|
---|
646 | if (servoPinMap[pin] < MAX_SERVOS && servos[servoPinMap[pin]].attached()) {
|
---|
647 | detachServo(pin);
|
---|
648 | }
|
---|
649 | attachServo(pin, minPulse, maxPulse);
|
---|
650 | setPinModeCallback(pin, PIN_MODE_SERVO);
|
---|
651 | }
|
---|
652 | }
|
---|
653 | break;
|
---|
654 | case SAMPLING_INTERVAL:
|
---|
655 | if (argc > 1) {
|
---|
656 | samplingInterval = argv[0] + (argv[1] << 7);
|
---|
657 | if (samplingInterval < MINIMUM_SAMPLING_INTERVAL) {
|
---|
658 | samplingInterval = MINIMUM_SAMPLING_INTERVAL;
|
---|
659 | }
|
---|
660 | } else {
|
---|
661 | //Firmata.sendString("Not enough data");
|
---|
662 | }
|
---|
663 | break;
|
---|
664 | case EXTENDED_ANALOG:
|
---|
665 | if (argc > 1) {
|
---|
666 | int val = argv[1];
|
---|
667 | if (argc > 2) val |= (argv[2] << 7);
|
---|
668 | if (argc > 3) val |= (argv[3] << 14);
|
---|
669 | analogWriteCallback(argv[0], val);
|
---|
670 | }
|
---|
671 | break;
|
---|
672 | case CAPABILITY_QUERY:
|
---|
673 | Firmata.write(START_SYSEX);
|
---|
674 | Firmata.write(CAPABILITY_RESPONSE);
|
---|
675 | for (byte pin = 0; pin < TOTAL_PINS; pin++) {
|
---|
676 | if (IS_PIN_DIGITAL(pin)) {
|
---|
677 | Firmata.write((byte)INPUT);
|
---|
678 | Firmata.write(1);
|
---|
679 | Firmata.write((byte)PIN_MODE_PULLUP);
|
---|
680 | Firmata.write(1);
|
---|
681 | Firmata.write((byte)OUTPUT);
|
---|
682 | Firmata.write(1);
|
---|
683 | }
|
---|
684 | if (IS_PIN_ANALOG(pin)) {
|
---|
685 | Firmata.write(PIN_MODE_ANALOG);
|
---|
686 | Firmata.write(10); // 10 = 10-bit resolution
|
---|
687 | }
|
---|
688 | if (IS_PIN_PWM(pin)) {
|
---|
689 | Firmata.write(PIN_MODE_PWM);
|
---|
690 | Firmata.write(8); // 8 = 8-bit resolution
|
---|
691 | }
|
---|
692 | if (IS_PIN_DIGITAL(pin)) {
|
---|
693 | Firmata.write(PIN_MODE_SERVO);
|
---|
694 | Firmata.write(14);
|
---|
695 | }
|
---|
696 | if (IS_PIN_I2C(pin)) {
|
---|
697 | Firmata.write(PIN_MODE_I2C);
|
---|
698 | Firmata.write(1); // TODO: could assign a number to map to SCL or SDA
|
---|
699 | }
|
---|
700 | #ifdef FIRMATA_SERIAL_FEATURE
|
---|
701 | serialFeature.handleCapability(pin);
|
---|
702 | #endif
|
---|
703 | Firmata.write(127);
|
---|
704 | }
|
---|
705 | Firmata.write(END_SYSEX);
|
---|
706 | break;
|
---|
707 | case PIN_STATE_QUERY:
|
---|
708 | if (argc > 0) {
|
---|
709 | byte pin = argv[0];
|
---|
710 | Firmata.write(START_SYSEX);
|
---|
711 | Firmata.write(PIN_STATE_RESPONSE);
|
---|
712 | Firmata.write(pin);
|
---|
713 | if (pin < TOTAL_PINS) {
|
---|
714 | Firmata.write(Firmata.getPinMode(pin));
|
---|
715 | Firmata.write((byte)Firmata.getPinState(pin) & 0x7F);
|
---|
716 | if (Firmata.getPinState(pin) & 0xFF80) Firmata.write((byte)(Firmata.getPinState(pin) >> 7) & 0x7F);
|
---|
717 | if (Firmata.getPinState(pin) & 0xC000) Firmata.write((byte)(Firmata.getPinState(pin) >> 14) & 0x7F);
|
---|
718 | }
|
---|
719 | Firmata.write(END_SYSEX);
|
---|
720 | }
|
---|
721 | break;
|
---|
722 | case ANALOG_MAPPING_QUERY:
|
---|
723 | Firmata.write(START_SYSEX);
|
---|
724 | Firmata.write(ANALOG_MAPPING_RESPONSE);
|
---|
725 | for (byte pin = 0; pin < TOTAL_PINS; pin++) {
|
---|
726 | Firmata.write(IS_PIN_ANALOG(pin) ? PIN_TO_ANALOG(pin) : 127);
|
---|
727 | }
|
---|
728 | Firmata.write(END_SYSEX);
|
---|
729 | break;
|
---|
730 |
|
---|
731 | case SERIAL_MESSAGE:
|
---|
732 | #ifdef FIRMATA_SERIAL_FEATURE
|
---|
733 | serialFeature.handleSysex(command, argc, argv);
|
---|
734 | #endif
|
---|
735 | break;
|
---|
736 | }
|
---|
737 | }
|
---|
738 |
|
---|
739 | void enableI2CPins()
|
---|
740 | {
|
---|
741 | byte i;
|
---|
742 | // is there a faster way to do this? would probaby require importing
|
---|
743 | // Arduino.h to get SCL and SDA pins
|
---|
744 | for (i = 0; i < TOTAL_PINS; i++) {
|
---|
745 | if (IS_PIN_I2C(i)) {
|
---|
746 | // mark pins as i2c so they are ignore in non i2c data requests
|
---|
747 | setPinModeCallback(i, PIN_MODE_I2C);
|
---|
748 | }
|
---|
749 | }
|
---|
750 |
|
---|
751 | isI2CEnabled = true;
|
---|
752 |
|
---|
753 | Wire.begin();
|
---|
754 | }
|
---|
755 |
|
---|
756 | /* disable the i2c pins so they can be used for other functions */
|
---|
757 | void disableI2CPins() {
|
---|
758 | isI2CEnabled = false;
|
---|
759 | // disable read continuous mode for all devices
|
---|
760 | queryIndex = -1;
|
---|
761 | }
|
---|
762 |
|
---|
763 | /*==============================================================================
|
---|
764 | * SETUP()
|
---|
765 | *============================================================================*/
|
---|
766 |
|
---|
767 | void systemResetCallback()
|
---|
768 | {
|
---|
769 | isResetting = true;
|
---|
770 |
|
---|
771 | // initialize a defalt state
|
---|
772 | // TODO: option to load config from EEPROM instead of default
|
---|
773 |
|
---|
774 | #ifdef FIRMATA_SERIAL_FEATURE
|
---|
775 | serialFeature.reset();
|
---|
776 | #endif
|
---|
777 |
|
---|
778 | if (isI2CEnabled) {
|
---|
779 | disableI2CPins();
|
---|
780 | }
|
---|
781 |
|
---|
782 | for (byte i = 0; i < TOTAL_PORTS; i++) {
|
---|
783 | reportPINs[i] = false; // by default, reporting off
|
---|
784 | portConfigInputs[i] = 0; // until activated
|
---|
785 | previousPINs[i] = 0;
|
---|
786 | }
|
---|
787 |
|
---|
788 | for (byte i = 0; i < TOTAL_PINS; i++) {
|
---|
789 | // pins with analog capability default to analog input
|
---|
790 | // otherwise, pins default to digital output
|
---|
791 | if (IS_PIN_ANALOG(i)) {
|
---|
792 | // turns off pullup, configures everything
|
---|
793 | setPinModeCallback(i, PIN_MODE_ANALOG);
|
---|
794 | } else if (IS_PIN_DIGITAL(i)) {
|
---|
795 | // sets the output to 0, configures portConfigInputs
|
---|
796 | setPinModeCallback(i, OUTPUT);
|
---|
797 | }
|
---|
798 |
|
---|
799 | servoPinMap[i] = 255;
|
---|
800 | }
|
---|
801 | // by default, do not report any analog inputs
|
---|
802 | analogInputsToReport = 0;
|
---|
803 |
|
---|
804 | detachedServoCount = 0;
|
---|
805 | servoCount = 0;
|
---|
806 |
|
---|
807 | /* send digital inputs to set the initial state on the host computer,
|
---|
808 | * since once in the loop(), this firmware will only send on change */
|
---|
809 | /*
|
---|
810 | TODO: this can never execute, since no pins default to digital input
|
---|
811 | but it will be needed when/if we support EEPROM stored config
|
---|
812 | for (byte i=0; i < TOTAL_PORTS; i++) {
|
---|
813 | outputPort(i, readPort(i, portConfigInputs[i]), true);
|
---|
814 | }
|
---|
815 | */
|
---|
816 | isResetting = false;
|
---|
817 | }
|
---|
818 |
|
---|
819 | void printWifiStatus() {
|
---|
820 | #if defined(ARDUINO_WIFI_SHIELD) || defined(WIFI_101)
|
---|
821 | if ( WiFi.status() != WL_CONNECTED )
|
---|
822 | {
|
---|
823 | DEBUG_PRINT( "WiFi connection failed. Status value: " );
|
---|
824 | DEBUG_PRINTLN( WiFi.status() );
|
---|
825 | }
|
---|
826 | else
|
---|
827 | #endif //defined(ARDUINO_WIFI_SHIELD) || defined(WIFI_101)
|
---|
828 | {
|
---|
829 | // print the SSID of the network you're attached to:
|
---|
830 | DEBUG_PRINT( "SSID: " );
|
---|
831 |
|
---|
832 | #if defined(ARDUINO_WIFI_SHIELD) || defined(WIFI_101)
|
---|
833 | DEBUG_PRINTLN( WiFi.SSID() );
|
---|
834 | #endif //defined(ARDUINO_WIFI_SHIELD) || defined(WIFI_101)
|
---|
835 |
|
---|
836 | // print your WiFi shield's IP address:
|
---|
837 | DEBUG_PRINT( "IP Address: " );
|
---|
838 |
|
---|
839 | #if defined(ARDUINO_WIFI_SHIELD) || defined(WIFI_101)
|
---|
840 | IPAddress ip = WiFi.localIP();
|
---|
841 | DEBUG_PRINTLN( ip );
|
---|
842 | #endif //defined(ARDUINO_WIFI_SHIELD) || defined(WIFI_101)
|
---|
843 |
|
---|
844 | // print the received signal strength:
|
---|
845 | DEBUG_PRINT( "signal strength (RSSI): " );
|
---|
846 |
|
---|
847 | #if defined(ARDUINO_WIFI_SHIELD) || defined(WIFI_101)
|
---|
848 | long rssi = WiFi.RSSI();
|
---|
849 | DEBUG_PRINT( rssi );
|
---|
850 | #endif //defined(ARDUINO_WIFI_SHIELD) || defined(WIFI_101)
|
---|
851 |
|
---|
852 | DEBUG_PRINTLN( " dBm" );
|
---|
853 | }
|
---|
854 | }
|
---|
855 |
|
---|
856 | void setup()
|
---|
857 | {
|
---|
858 | /*
|
---|
859 | * WIFI SETUP
|
---|
860 | */
|
---|
861 | DEBUG_BEGIN(9600);
|
---|
862 |
|
---|
863 | /*
|
---|
864 | * This statement will clarify how a connection is being made
|
---|
865 | */
|
---|
866 | DEBUG_PRINT( "StandardFirmataWiFi will attempt a WiFi connection " );
|
---|
867 | #if defined(WIFI_101)
|
---|
868 | DEBUG_PRINTLN( "using the WiFi 101 library." );
|
---|
869 | #elif defined(ARDUINO_WIFI_SHIELD)
|
---|
870 | DEBUG_PRINTLN( "using the legacy WiFi library." );
|
---|
871 | #elif defined(HUZZAH_WIFI)
|
---|
872 | DEBUG_PRINTLN( "using the HUZZAH WiFi library." );
|
---|
873 | //else should never happen here as error-checking in wifiConfig.h will catch this
|
---|
874 | #endif //defined(WIFI_101)
|
---|
875 |
|
---|
876 | /*
|
---|
877 | * Configure WiFi IP Address
|
---|
878 | */
|
---|
879 | #ifdef STATIC_IP_ADDRESS
|
---|
880 | DEBUG_PRINT( "Using static IP: " );
|
---|
881 | DEBUG_PRINTLN( local_ip );
|
---|
882 | //you can also provide a static IP in the begin() functions, but this simplifies
|
---|
883 | //ifdef logic in this sketch due to support for all different encryption types.
|
---|
884 | stream.config( local_ip );
|
---|
885 | #else
|
---|
886 | DEBUG_PRINTLN( "IP will be requested from DHCP ..." );
|
---|
887 | #endif
|
---|
888 |
|
---|
889 | /*
|
---|
890 | * Configure WiFi security
|
---|
891 | */
|
---|
892 | #if defined(WIFI_WEP_SECURITY)
|
---|
893 | while (wifiStatus != WL_CONNECTED) {
|
---|
894 | DEBUG_PRINT( "Attempting to connect to WEP SSID: " );
|
---|
895 | DEBUG_PRINTLN(ssid);
|
---|
896 | wifiStatus = stream.begin( ssid, wep_index, wep_key, SERVER_PORT );
|
---|
897 | delay(5000); // TODO - determine minimum delay
|
---|
898 | if (++wifiConnectionAttemptCounter > WIFI_MAX_CONN_ATTEMPTS) break;
|
---|
899 | }
|
---|
900 |
|
---|
901 | #elif defined(WIFI_WPA_SECURITY)
|
---|
902 | while (wifiStatus != WL_CONNECTED) {
|
---|
903 | DEBUG_PRINT( "Attempting to connect to WPA SSID: " );
|
---|
904 | DEBUG_PRINTLN(ssid);
|
---|
905 | wifiStatus = stream.begin(ssid, wpa_passphrase, SERVER_PORT);
|
---|
906 | delay(5000); // TODO - determine minimum delay
|
---|
907 | if (++wifiConnectionAttemptCounter > WIFI_MAX_CONN_ATTEMPTS) break;
|
---|
908 | }
|
---|
909 |
|
---|
910 | #else //OPEN network
|
---|
911 | while (wifiStatus != WL_CONNECTED) {
|
---|
912 | DEBUG_PRINTLN( "Attempting to connect to open SSID: " );
|
---|
913 | DEBUG_PRINTLN(ssid);
|
---|
914 | wifiStatus = stream.begin(ssid, SERVER_PORT);
|
---|
915 | delay(5000); // TODO - determine minimum delay
|
---|
916 | if (++wifiConnectionAttemptCounter > WIFI_MAX_CONN_ATTEMPTS) break;
|
---|
917 | }
|
---|
918 | #endif //defined(WIFI_WEP_SECURITY)
|
---|
919 |
|
---|
920 | DEBUG_PRINTLN( "WiFi setup done" );
|
---|
921 | printWifiStatus();
|
---|
922 |
|
---|
923 | /*
|
---|
924 | * FIRMATA SETUP
|
---|
925 | */
|
---|
926 | Firmata.setFirmwareVersion(FIRMATA_FIRMWARE_MAJOR_VERSION, FIRMATA_FIRMWARE_MINOR_VERSION);
|
---|
927 |
|
---|
928 | Firmata.attach(ANALOG_MESSAGE, analogWriteCallback);
|
---|
929 | Firmata.attach(DIGITAL_MESSAGE, digitalWriteCallback);
|
---|
930 | Firmata.attach(REPORT_ANALOG, reportAnalogCallback);
|
---|
931 | Firmata.attach(REPORT_DIGITAL, reportDigitalCallback);
|
---|
932 | Firmata.attach(SET_PIN_MODE, setPinModeCallback);
|
---|
933 | Firmata.attach(SET_DIGITAL_PIN_VALUE, setPinValueCallback);
|
---|
934 | Firmata.attach(START_SYSEX, sysexCallback);
|
---|
935 | Firmata.attach(SYSTEM_RESET, systemResetCallback);
|
---|
936 |
|
---|
937 | // StandardFirmataWiFi communicates with WiFi shields over SPI. Therefore all
|
---|
938 | // SPI pins must be set to IGNORE. Otherwise Firmata would break SPI communication.
|
---|
939 | // Additional pins may also need to be ignored depending on the particular board or
|
---|
940 | // shield in use.
|
---|
941 |
|
---|
942 | for (byte i = 0; i < TOTAL_PINS; i++) {
|
---|
943 | #if defined(ARDUINO_WIFI_SHIELD)
|
---|
944 | if (IS_IGNORE_WIFI_SHIELD(i)
|
---|
945 | #if defined(__AVR_ATmega32U4__)
|
---|
946 | || 24 == i // On Leonardo, pin 24 maps to D4 and pin 28 maps to D10
|
---|
947 | || 28 == i
|
---|
948 | #endif //defined(__AVR_ATmega32U4__)
|
---|
949 | ) {
|
---|
950 | #elif defined (WIFI_101)
|
---|
951 | if (IS_IGNORE_WIFI101_SHIELD(i)) {
|
---|
952 | #elif defined (HUZZAH_WIFI)
|
---|
953 | // TODO
|
---|
954 | if (false) {
|
---|
955 | #else
|
---|
956 | if (false) {
|
---|
957 | #endif
|
---|
958 | Firmata.setPinMode(i, PIN_MODE_IGNORE);
|
---|
959 | }
|
---|
960 | }
|
---|
961 |
|
---|
962 | //Set up controls for the Arduino WiFi Shield SS for the SD Card
|
---|
963 | #ifdef ARDUINO_WIFI_SHIELD
|
---|
964 | // Arduino WiFi, Arduino WiFi Shield and Arduino Yun all have SD SS wired to D4
|
---|
965 | pinMode(PIN_TO_DIGITAL(4), OUTPUT); // switch off SD card bypassing Firmata
|
---|
966 | digitalWrite(PIN_TO_DIGITAL(4), HIGH); // SS is active low;
|
---|
967 |
|
---|
968 | #if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
|
---|
969 | pinMode(PIN_TO_DIGITAL(53), OUTPUT); // configure hardware SS as output on MEGA
|
---|
970 | #endif //defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
|
---|
971 |
|
---|
972 | #endif //ARDUINO_WIFI_SHIELD
|
---|
973 |
|
---|
974 | // start up Network Firmata:
|
---|
975 | Firmata.begin(stream);
|
---|
976 | systemResetCallback(); // reset to default config
|
---|
977 | }
|
---|
978 |
|
---|
979 | /*==============================================================================
|
---|
980 | * LOOP()
|
---|
981 | *============================================================================*/
|
---|
982 | void loop()
|
---|
983 | {
|
---|
984 | byte pin, analogPin;
|
---|
985 |
|
---|
986 | /* DIGITALREAD - as fast as possible, check for changes and output them to the
|
---|
987 | * Stream buffer using Stream.write() */
|
---|
988 | checkDigitalInputs();
|
---|
989 |
|
---|
990 | /* STREAMREAD - processing incoming messagse as soon as possible, while still
|
---|
991 | * checking digital inputs. */
|
---|
992 | while (Firmata.available()) {
|
---|
993 | Firmata.processInput();
|
---|
994 | }
|
---|
995 |
|
---|
996 | // TODO - ensure that Stream buffer doesn't go over 60 bytes
|
---|
997 |
|
---|
998 | currentMillis = millis();
|
---|
999 | if (currentMillis - previousMillis > samplingInterval) {
|
---|
1000 | previousMillis += samplingInterval;
|
---|
1001 | /* ANALOGREAD - do all analogReads() at the configured sampling interval */
|
---|
1002 | for (pin = 0; pin < TOTAL_PINS; pin++) {
|
---|
1003 | if (IS_PIN_ANALOG(pin) && Firmata.getPinMode(pin) == PIN_MODE_ANALOG) {
|
---|
1004 | analogPin = PIN_TO_ANALOG(pin);
|
---|
1005 | if (analogInputsToReport & (1 << analogPin)) {
|
---|
1006 | Firmata.sendAnalog(analogPin, analogRead(analogPin));
|
---|
1007 | }
|
---|
1008 | }
|
---|
1009 | }
|
---|
1010 | // report i2c data for all device with read continuous mode enabled
|
---|
1011 | if (queryIndex > -1) {
|
---|
1012 | for (byte i = 0; i < queryIndex + 1; i++) {
|
---|
1013 | readAndReportData(query[i].addr, query[i].reg, query[i].bytes, query[i].stopTX);
|
---|
1014 | }
|
---|
1015 | }
|
---|
1016 | }
|
---|
1017 |
|
---|
1018 | #ifdef FIRMATA_SERIAL_FEATURE
|
---|
1019 | serialFeature.update();
|
---|
1020 | #endif
|
---|
1021 |
|
---|
1022 | stream.maintain();
|
---|
1023 | }
|
---|