Hacking into the iClicker2 for adding remote access abilities. http://www.amazon.com/I-Clicker-2-I-CLICKER/dp/1429280476
main.cpp@0:614bf9f43501, 2014-11-24 (annotated)
- Committer:
- jjones646
- Date:
- Mon Nov 24 03:10:20 2014 +0000
- Revision:
- 0:614bf9f43501
- Child:
- 1:7ea05d050158
initial commit;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jjones646 | 0:614bf9f43501 | 1 | #include "mbed.h" |
jjones646 | 0:614bf9f43501 | 2 | #include <string> |
jjones646 | 0:614bf9f43501 | 3 | #include <vector> |
jjones646 | 0:614bf9f43501 | 4 | |
jjones646 | 0:614bf9f43501 | 5 | // These are used for setting the serial buffer size and how long the mbed should wait between updates |
jjones646 | 0:614bf9f43501 | 6 | static const float SLEEP_TIME = 0.5; // x86 background process will only have updates every 1 second in ideal situations |
jjones646 | 0:614bf9f43501 | 7 | static const float PIN_DELAY = 0.05; // the time to wait for allowing the relays to fully cycle between transitions |
jjones646 | 0:614bf9f43501 | 8 | static const float POWER_UP_TIME = 5.0; // seconds for the device clicker to go from an OFF to ON state |
jjones646 | 0:614bf9f43501 | 9 | static const int NUM_CMDS = 8; |
jjones646 | 0:614bf9f43501 | 10 | |
jjones646 | 0:614bf9f43501 | 11 | // Used for signaling to the main loop if new serial data has arrived by the serial rx interrupt |
jjones646 | 0:614bf9f43501 | 12 | bool new_data; |
jjones646 | 0:614bf9f43501 | 13 | |
jjones646 | 0:614bf9f43501 | 14 | // Enumerations for the device's power state |
jjones646 | 0:614bf9f43501 | 15 | enum device_state_t { |
jjones646 | 0:614bf9f43501 | 16 | ON = 1, |
jjones646 | 0:614bf9f43501 | 17 | OFF = 2 |
jjones646 | 0:614bf9f43501 | 18 | }; |
jjones646 | 0:614bf9f43501 | 19 | |
jjones646 | 0:614bf9f43501 | 20 | // Object for linking to a computer via serial communication |
jjones646 | 0:614bf9f43501 | 21 | Serial pc(USBTX, USBRX); |
jjones646 | 0:614bf9f43501 | 22 | |
jjones646 | 0:614bf9f43501 | 23 | // Global string for storing the received serial data on the serial rx interrupt |
jjones646 | 0:614bf9f43501 | 24 | string gStr; |
jjones646 | 0:614bf9f43501 | 25 | |
jjones646 | 0:614bf9f43501 | 26 | |
jjones646 | 0:614bf9f43501 | 27 | void rx_interrupt(void) |
jjones646 | 0:614bf9f43501 | 28 | { |
jjones646 | 0:614bf9f43501 | 29 | int i = 0; |
jjones646 | 0:614bf9f43501 | 30 | |
jjones646 | 0:614bf9f43501 | 31 | // update global character array |
jjones646 | 0:614bf9f43501 | 32 | while (pc.readable() | (i<6) ) { |
jjones646 | 0:614bf9f43501 | 33 | gStr += pc.getc(); |
jjones646 | 0:614bf9f43501 | 34 | i++; |
jjones646 | 0:614bf9f43501 | 35 | wait(0.02); |
jjones646 | 0:614bf9f43501 | 36 | } |
jjones646 | 0:614bf9f43501 | 37 | |
jjones646 | 0:614bf9f43501 | 38 | new_data = 1; |
jjones646 | 0:614bf9f43501 | 39 | } |
jjones646 | 0:614bf9f43501 | 40 | |
jjones646 | 0:614bf9f43501 | 41 | |
jjones646 | 0:614bf9f43501 | 42 | void make_edge(DigitalOut& pin) |
jjones646 | 0:614bf9f43501 | 43 | { |
jjones646 | 0:614bf9f43501 | 44 | pin = !pin; |
jjones646 | 0:614bf9f43501 | 45 | wait(PIN_DELAY); |
jjones646 | 0:614bf9f43501 | 46 | pin = !pin; |
jjones646 | 0:614bf9f43501 | 47 | } |
jjones646 | 0:614bf9f43501 | 48 | |
jjones646 | 0:614bf9f43501 | 49 | |
jjones646 | 0:614bf9f43501 | 50 | void confirm_on(AnalogIn& ain){ |
jjones646 | 0:614bf9f43501 | 51 | uint16_t readings[3]; |
jjones646 | 0:614bf9f43501 | 52 | |
jjones646 | 0:614bf9f43501 | 53 | // get 5 initial readings |
jjones646 | 0:614bf9f43501 | 54 | for (int i=0; i<4; i++) |
jjones646 | 0:614bf9f43501 | 55 | { |
jjones646 | 0:614bf9f43501 | 56 | readings[i] = ain.read_u16(); |
jjones646 | 0:614bf9f43501 | 57 | wait(0.01); |
jjones646 | 0:614bf9f43501 | 58 | } |
jjones646 | 0:614bf9f43501 | 59 | |
jjones646 | 0:614bf9f43501 | 60 | for (int i=0; i<4; i++) |
jjones646 | 0:614bf9f43501 | 61 | { |
jjones646 | 0:614bf9f43501 | 62 | if (readings[i] < 60000) |
jjones646 | 0:614bf9f43501 | 63 | { |
jjones646 | 0:614bf9f43501 | 64 | confirm_on(ain); // break into recursion if past readings are not settled values |
jjones646 | 0:614bf9f43501 | 65 | } |
jjones646 | 0:614bf9f43501 | 66 | } |
jjones646 | 0:614bf9f43501 | 67 | } |
jjones646 | 0:614bf9f43501 | 68 | |
jjones646 | 0:614bf9f43501 | 69 | |
jjones646 | 0:614bf9f43501 | 70 | int main() |
jjones646 | 0:614bf9f43501 | 71 | { |
jjones646 | 0:614bf9f43501 | 72 | // Blinking LED to show that mbed is running |
jjones646 | 0:614bf9f43501 | 73 | DigitalOut led1(LED1); |
jjones646 | 0:614bf9f43501 | 74 | |
jjones646 | 0:614bf9f43501 | 75 | // On/Off, Mode, Send |
jjones646 | 0:614bf9f43501 | 76 | DigitalOut controls[] = { p13, p14, p15 }; |
jjones646 | 0:614bf9f43501 | 77 | |
jjones646 | 0:614bf9f43501 | 78 | // A, B, C, D, E |
jjones646 | 0:614bf9f43501 | 79 | DigitalOut selections[] = { p16, p17, p18, p19, p21 }; |
jjones646 | 0:614bf9f43501 | 80 | |
jjones646 | 0:614bf9f43501 | 81 | // Used for reading the clicker's voltage regulator output for determining if clicker is on/off |
jjones646 | 0:614bf9f43501 | 82 | AnalogIn pwr_status(p20); |
jjones646 | 0:614bf9f43501 | 83 | |
jjones646 | 0:614bf9f43501 | 84 | // Define the commands variable that holds a list of all valid serial commands |
jjones646 | 0:614bf9f43501 | 85 | std::vector<string> commands(NUM_CMDS); |
jjones646 | 0:614bf9f43501 | 86 | |
jjones646 | 0:614bf9f43501 | 87 | // Define the valid set of serial commands |
jjones646 | 0:614bf9f43501 | 88 | commands[0] = "clickerPower\n"; |
jjones646 | 0:614bf9f43501 | 89 | commands[1] = "clickerSend\n"; |
jjones646 | 0:614bf9f43501 | 90 | commands[2] = "sayHere\n"; |
jjones646 | 0:614bf9f43501 | 91 | commands[3] = "clickerA\n"; |
jjones646 | 0:614bf9f43501 | 92 | commands[4] = "clickerB\n"; |
jjones646 | 0:614bf9f43501 | 93 | commands[5] = "clickerC\n"; |
jjones646 | 0:614bf9f43501 | 94 | commands[6] = "clickerD\n"; |
jjones646 | 0:614bf9f43501 | 95 | commands[7] = "clickerE\n"; |
jjones646 | 0:614bf9f43501 | 96 | |
jjones646 | 0:614bf9f43501 | 97 | // Initialize power toggle pin so clicker stays off at mbed startup |
jjones646 | 0:614bf9f43501 | 98 | controls[0] = 1; |
jjones646 | 0:614bf9f43501 | 99 | |
jjones646 | 0:614bf9f43501 | 100 | // get initial power readings |
jjones646 | 0:614bf9f43501 | 101 | uint16_t pwr_level = pwr_status.read_u16(); |
jjones646 | 0:614bf9f43501 | 102 | uint16_t pwr_level_new = pwr_status.read_u16(); |
jjones646 | 0:614bf9f43501 | 103 | |
jjones646 | 0:614bf9f43501 | 104 | device_state_t dev_power = ON; // initialize to an off state |
jjones646 | 0:614bf9f43501 | 105 | |
jjones646 | 0:614bf9f43501 | 106 | // variables for the main scope |
jjones646 | 0:614bf9f43501 | 107 | char current_selection = NULL; |
jjones646 | 0:614bf9f43501 | 108 | bool update_selection = false; |
jjones646 | 0:614bf9f43501 | 109 | int usr_cmd = 0; |
jjones646 | 0:614bf9f43501 | 110 | |
jjones646 | 0:614bf9f43501 | 111 | // Holding down active low Power button will put clicker in configuration mode...we don't want that |
jjones646 | 0:614bf9f43501 | 112 | selections[0] = 1; |
jjones646 | 0:614bf9f43501 | 113 | |
jjones646 | 0:614bf9f43501 | 114 | // Function to run at receiving serial data |
jjones646 | 0:614bf9f43501 | 115 | pc.attach(&rx_interrupt, Serial::RxIrq); |
jjones646 | 0:614bf9f43501 | 116 | |
jjones646 | 0:614bf9f43501 | 117 | // infinite processing loop |
jjones646 | 0:614bf9f43501 | 118 | while(1) { |
jjones646 | 0:614bf9f43501 | 119 | |
jjones646 | 0:614bf9f43501 | 120 | // pull in from globally allocated memory when interurpts are disabled |
jjones646 | 0:614bf9f43501 | 121 | __disable_irq(); |
jjones646 | 0:614bf9f43501 | 122 | |
jjones646 | 0:614bf9f43501 | 123 | pwr_level_new = pwr_status.read_u16(); |
jjones646 | 0:614bf9f43501 | 124 | |
jjones646 | 0:614bf9f43501 | 125 | if (new_data){ |
jjones646 | 0:614bf9f43501 | 126 | new_data = 0; |
jjones646 | 0:614bf9f43501 | 127 | |
jjones646 | 0:614bf9f43501 | 128 | // assign a valid command to variable for the switch case statement. If command is invalid, ignore |
jjones646 | 0:614bf9f43501 | 129 | for (int i=0; i<NUM_CMDS+1; i++){ |
jjones646 | 0:614bf9f43501 | 130 | if ( !(strcmp(gStr.c_str(), commands[i].c_str())) ) { |
jjones646 | 0:614bf9f43501 | 131 | usr_cmd = i+1; |
jjones646 | 0:614bf9f43501 | 132 | break; |
jjones646 | 0:614bf9f43501 | 133 | } |
jjones646 | 0:614bf9f43501 | 134 | } |
jjones646 | 0:614bf9f43501 | 135 | |
jjones646 | 0:614bf9f43501 | 136 | switch( usr_cmd ) { |
jjones646 | 0:614bf9f43501 | 137 | case 1: // clickerPower |
jjones646 | 0:614bf9f43501 | 138 | make_edge(controls[0]); |
jjones646 | 0:614bf9f43501 | 139 | break; |
jjones646 | 0:614bf9f43501 | 140 | |
jjones646 | 0:614bf9f43501 | 141 | case 2: // clickerSend |
jjones646 | 0:614bf9f43501 | 142 | if(current_selection) { |
jjones646 | 0:614bf9f43501 | 143 | make_edge(controls[1]); |
jjones646 | 0:614bf9f43501 | 144 | pc.printf(" Answer submitted: %c\r\n", current_selection); |
jjones646 | 0:614bf9f43501 | 145 | current_selection = NULL; |
jjones646 | 0:614bf9f43501 | 146 | } else { |
jjones646 | 0:614bf9f43501 | 147 | pc.printf(" Must make a selection before attempting a submission\r\n"); |
jjones646 | 0:614bf9f43501 | 148 | } |
jjones646 | 0:614bf9f43501 | 149 | make_edge(controls[1]); // comment line out for final version. Used for testing purposes here |
jjones646 | 0:614bf9f43501 | 150 | break; |
jjones646 | 0:614bf9f43501 | 151 | |
jjones646 | 0:614bf9f43501 | 152 | case 3: // sayHere |
jjones646 | 0:614bf9f43501 | 153 | pc.printf(" Audio currently unsupported\r\n"); |
jjones646 | 0:614bf9f43501 | 154 | break; |
jjones646 | 0:614bf9f43501 | 155 | |
jjones646 | 0:614bf9f43501 | 156 | case 4: // clickerA |
jjones646 | 0:614bf9f43501 | 157 | current_selection = 'A'; |
jjones646 | 0:614bf9f43501 | 158 | update_selection = true; |
jjones646 | 0:614bf9f43501 | 159 | break; |
jjones646 | 0:614bf9f43501 | 160 | |
jjones646 | 0:614bf9f43501 | 161 | case 5: // clickerB |
jjones646 | 0:614bf9f43501 | 162 | current_selection = 'B'; |
jjones646 | 0:614bf9f43501 | 163 | update_selection = true; |
jjones646 | 0:614bf9f43501 | 164 | break; |
jjones646 | 0:614bf9f43501 | 165 | |
jjones646 | 0:614bf9f43501 | 166 | case 6: // clickerC |
jjones646 | 0:614bf9f43501 | 167 | current_selection = 'C'; |
jjones646 | 0:614bf9f43501 | 168 | update_selection = true; |
jjones646 | 0:614bf9f43501 | 169 | break; |
jjones646 | 0:614bf9f43501 | 170 | |
jjones646 | 0:614bf9f43501 | 171 | case 7: // clickerD |
jjones646 | 0:614bf9f43501 | 172 | current_selection = 'D'; |
jjones646 | 0:614bf9f43501 | 173 | update_selection = true; |
jjones646 | 0:614bf9f43501 | 174 | break; |
jjones646 | 0:614bf9f43501 | 175 | |
jjones646 | 0:614bf9f43501 | 176 | case 8: // clickerE |
jjones646 | 0:614bf9f43501 | 177 | current_selection = 'E'; |
jjones646 | 0:614bf9f43501 | 178 | update_selection = true; |
jjones646 | 0:614bf9f43501 | 179 | break; |
jjones646 | 0:614bf9f43501 | 180 | |
jjones646 | 0:614bf9f43501 | 181 | default: |
jjones646 | 0:614bf9f43501 | 182 | break; |
jjones646 | 0:614bf9f43501 | 183 | } |
jjones646 | 0:614bf9f43501 | 184 | } |
jjones646 | 0:614bf9f43501 | 185 | |
jjones646 | 0:614bf9f43501 | 186 | |
jjones646 | 0:614bf9f43501 | 187 | if (update_selection) { |
jjones646 | 0:614bf9f43501 | 188 | |
jjones646 | 0:614bf9f43501 | 189 | update_selection = false; |
jjones646 | 0:614bf9f43501 | 190 | |
jjones646 | 0:614bf9f43501 | 191 | if (dev_power == ON){ |
jjones646 | 0:614bf9f43501 | 192 | make_edge(selections[usr_cmd - 4]); |
jjones646 | 0:614bf9f43501 | 193 | pc.printf(" You have selected option %c\r\n", current_selection); |
jjones646 | 0:614bf9f43501 | 194 | |
jjones646 | 0:614bf9f43501 | 195 | } else { |
jjones646 | 0:614bf9f43501 | 196 | pc.printf(" Device is not on\r\n"); |
jjones646 | 0:614bf9f43501 | 197 | current_selection = NULL; |
jjones646 | 0:614bf9f43501 | 198 | } |
jjones646 | 0:614bf9f43501 | 199 | } |
jjones646 | 0:614bf9f43501 | 200 | |
jjones646 | 0:614bf9f43501 | 201 | // if clicker's voltage level has changed significantly... |
jjones646 | 0:614bf9f43501 | 202 | if ( abs(pwr_level_new - pwr_level) > 20000) |
jjones646 | 0:614bf9f43501 | 203 | { |
jjones646 | 0:614bf9f43501 | 204 | |
jjones646 | 0:614bf9f43501 | 205 | // settling time |
jjones646 | 0:614bf9f43501 | 206 | while ( abs(pwr_level_new - pwr_status.read_u16()) > 32 ) |
jjones646 | 0:614bf9f43501 | 207 | { |
jjones646 | 0:614bf9f43501 | 208 | // wait until the analog input settles to a steady state reading |
jjones646 | 0:614bf9f43501 | 209 | pwr_level_new = pwr_status.read_u16(); |
jjones646 | 0:614bf9f43501 | 210 | wait(0.1); |
jjones646 | 0:614bf9f43501 | 211 | } |
jjones646 | 0:614bf9f43501 | 212 | |
jjones646 | 0:614bf9f43501 | 213 | if (pwr_level_new < pwr_level) // device is shutting down |
jjones646 | 0:614bf9f43501 | 214 | { |
jjones646 | 0:614bf9f43501 | 215 | dev_power = OFF; |
jjones646 | 0:614bf9f43501 | 216 | |
jjones646 | 0:614bf9f43501 | 217 | } else if (pwr_level_new > pwr_level) // device is turning on |
jjones646 | 0:614bf9f43501 | 218 | { |
jjones646 | 0:614bf9f43501 | 219 | confirm_on(pwr_status); // wait for voltage levels to settle to steady value when powering up |
jjones646 | 0:614bf9f43501 | 220 | wait(POWER_UP_TIME); |
jjones646 | 0:614bf9f43501 | 221 | dev_power = ON; |
jjones646 | 0:614bf9f43501 | 222 | } |
jjones646 | 0:614bf9f43501 | 223 | |
jjones646 | 0:614bf9f43501 | 224 | // update the power level reading |
jjones646 | 0:614bf9f43501 | 225 | pwr_level = pwr_level_new; |
jjones646 | 0:614bf9f43501 | 226 | pc.printf(" Device power status updated. New status: %s\r\n", dev_power == ON ? "ON": "OFF"); |
jjones646 | 0:614bf9f43501 | 227 | } |
jjones646 | 0:614bf9f43501 | 228 | |
jjones646 | 0:614bf9f43501 | 229 | |
jjones646 | 0:614bf9f43501 | 230 | // clear all command related variables |
jjones646 | 0:614bf9f43501 | 231 | gStr.clear(); |
jjones646 | 0:614bf9f43501 | 232 | usr_cmd = 0; |
jjones646 | 0:614bf9f43501 | 233 | |
jjones646 | 0:614bf9f43501 | 234 | // turn interrupts back on before going into a sleeping state |
jjones646 | 0:614bf9f43501 | 235 | __enable_irq(); |
jjones646 | 0:614bf9f43501 | 236 | |
jjones646 | 0:614bf9f43501 | 237 | // blink that shit then be lazy |
jjones646 | 0:614bf9f43501 | 238 | led1 = !led1; |
jjones646 | 0:614bf9f43501 | 239 | wait(SLEEP_TIME); |
jjones646 | 0:614bf9f43501 | 240 | } |
jjones646 | 0:614bf9f43501 | 241 | } |