Henk Meewis / Mbed 2 deprecated USB_serial_LED_controller

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Dependencies:   mbed

Fork of frdm_echo by Henk Meewis

shell.cpp@12:b846b64e3980, 2014-04-17 (annotated)

Committer:
silverpanda
Date:
Thu Apr 17 15:38:08 2014 +0000
Revision:
12:b846b64e3980
Parent:
11:4c6c6d6c0ebe
Child:
13:019e24491f32
changed name

Who changed what in which revision?

UserRevisionLine numberNew contents of line
silverpanda 5:03b7c237c4c4 1 #include "mbed.h"
silverpanda 7:19da09fe546b 2 #include "LEDColors.h"
silverpanda 5:03b7c237c4c4 3 #include "shell.h"
silverpanda 5:03b7c237c4c4 4
silverpanda 7:19da09fe546b 5 extern LEDColors *ledColors;
silverpanda 7:19da09fe546b 6
silverpanda 5:03b7c237c4c4 7 // create contructor
silverpanda 5:03b7c237c4c4 8 Shell::Shell(uint32_t thisBaudRate)
silverpanda 5:03b7c237c4c4 9 {
silverpanda 5:03b7c237c4c4 10 usbSerial = new Serial(USBTX, USBRX);
silverpanda 5:03b7c237c4c4 11 usbSerial->baud(115200);
silverpanda 8:b715912d684b 12 characterCount = 0;
silverpanda 8:b715912d684b 13 characterPointer = 0;
silverpanda 5:03b7c237c4c4 14 }
silverpanda 5:03b7c237c4c4 15 //-----------------------------------------------------------------------------
silverpanda 5:03b7c237c4c4 16
silverpanda 5:03b7c237c4c4 17 void Shell::sendText(char *thisText)
silverpanda 5:03b7c237c4c4 18 {
silverpanda 5:03b7c237c4c4 19 // this can send any text
silverpanda 5:03b7c237c4c4 20 usbSerial->printf(thisText);
silverpanda 5:03b7c237c4c4 21 }
silverpanda 5:03b7c237c4c4 22 //-----------------------------------------------------------------------------
silverpanda 5:03b7c237c4c4 23
silverpanda 12:b846b64e3980 24 void Shell::sendStartMessage()
silverpanda 5:03b7c237c4c4 25 {
silverpanda 5:03b7c237c4c4 26 // sends the first greeting
silverpanda 12:b846b64e3980 27 sendText("> ** K64 LED controller **\n");
silverpanda 12:b846b64e3980 28 sendText(">\n");
silverpanda 12:b846b64e3980 29 sendText("> use commands like: turn blue LED on\n");
silverpanda 12:b846b64e3980 30 sendText("> or: turn red LED off\n");
silverpanda 12:b846b64e3980 31 sendText(">\n> ");
silverpanda 5:03b7c237c4c4 32 }
silverpanda 5:03b7c237c4c4 33 //-----------------------------------------------------------------------------
silverpanda 5:03b7c237c4c4 34
silverpanda 5:03b7c237c4c4 35 void Shell::scanUSBSerialRx()
silverpanda 5:03b7c237c4c4 36 {
silverpanda 5:03b7c237c4c4 37 // check if there is something to read
silverpanda 5:03b7c237c4c4 38 if(usbSerial->readable()) {
silverpanda 9:f9efd3a69c2d 39
silverpanda 5:03b7c237c4c4 40 // if so ...
silverpanda 5:03b7c237c4c4 41 char character = usbSerial->getc();
silverpanda 9:f9efd3a69c2d 42
silverpanda 5:03b7c237c4c4 43 // see if this is a semi colon or a carriage return
silverpanda 5:03b7c237c4c4 44 // if so, give a new line cursor
silverpanda 7:19da09fe546b 45 if((character == ';') || (character == 13)) {
silverpanda 9:f9efd3a69c2d 46 finishCharacterBuffer();
silverpanda 9:f9efd3a69c2d 47 parseCommands();
silverpanda 7:19da09fe546b 48 usbSerial->printf("\n> ");
silverpanda 11:4c6c6d6c0ebe 49 // ledColors->flashWhite(10);
silverpanda 11:4c6c6d6c0ebe 50 ledColors->flash(lcBlue, 10);
silverpanda 7:19da09fe546b 51 }
silverpanda 9:f9efd3a69c2d 52
silverpanda 5:03b7c237c4c4 53 // if not, just print the character
silverpanda 9:f9efd3a69c2d 54 else if(addCharacterToBuffer(character)) {
silverpanda 9:f9efd3a69c2d 55 usbSerial->printf("%c", character);
silverpanda 11:4c6c6d6c0ebe 56 ledColors->flash(lcGreen, 10);
silverpanda 7:19da09fe546b 57 }
silverpanda 5:03b7c237c4c4 58 }
silverpanda 5:03b7c237c4c4 59 }
silverpanda 5:03b7c237c4c4 60 //-----------------------------------------------------------------------------
silverpanda 9:f9efd3a69c2d 61
silverpanda 9:f9efd3a69c2d 62 bool Shell::addCharacterToBuffer(char newCharacter)
silverpanda 8:b715912d684b 63 {
silverpanda 9:f9efd3a69c2d 64 bool accept = (characterPointer < ItsInputBufferSize_);
silverpanda 9:f9efd3a69c2d 65 if(accept) {
silverpanda 8:b715912d684b 66 inputBuffer[characterPointer++] = newCharacter;
silverpanda 8:b715912d684b 67 characterCount = characterPointer;
silverpanda 8:b715912d684b 68 }
silverpanda 9:f9efd3a69c2d 69 return accept;
silverpanda 8:b715912d684b 70 }
silverpanda 8:b715912d684b 71 //-----------------------------------------------------------------------------
silverpanda 8:b715912d684b 72
silverpanda 8:b715912d684b 73 void Shell::finishCharacterBuffer()
silverpanda 8:b715912d684b 74 {
silverpanda 10:85a8da3b7e5e 75 inputBuffer[characterCount] = 0;
silverpanda 10:85a8da3b7e5e 76 characterCount = characterPointer;
silverpanda 8:b715912d684b 77 characterPointer = 0;
silverpanda 8:b715912d684b 78 }
silverpanda 9:f9efd3a69c2d 79 //-----------------------------------------------------------------------------
silverpanda 9:f9efd3a69c2d 80
silverpanda 11:4c6c6d6c0ebe 81 char Shell::lowercase(char thisChar)
silverpanda 11:4c6c6d6c0ebe 82 {
silverpanda 11:4c6c6d6c0ebe 83 // check if this character is uppercase
silverpanda 11:4c6c6d6c0ebe 84 if((thisChar >= 'A') && (thisChar <= 'Z')) thisChar += 32;
silverpanda 11:4c6c6d6c0ebe 85
silverpanda 11:4c6c6d6c0ebe 86 return thisChar;
silverpanda 11:4c6c6d6c0ebe 87 }
silverpanda 11:4c6c6d6c0ebe 88 //-----------------------------------------------------------------------------
silverpanda 11:4c6c6d6c0ebe 89
silverpanda 11:4c6c6d6c0ebe 90 bool Shell::findString(char *thisString)
silverpanda 9:f9efd3a69c2d 91 {
silverpanda 9:f9efd3a69c2d 92 bool found = false;
silverpanda 11:4c6c6d6c0ebe 93 uint32_t startPointer = 0, characterPointer, newStartLocation, stringLength = 0;
silverpanda 9:f9efd3a69c2d 94 char firstChar, secondChar;
silverpanda 11:4c6c6d6c0ebe 95
silverpanda 11:4c6c6d6c0ebe 96 // determine the length of thisString
silverpanda 11:4c6c6d6c0ebe 97 while(thisString[stringLength]) stringLength++;
silverpanda 11:4c6c6d6c0ebe 98
silverpanda 10:85a8da3b7e5e 99 // start at the start position (0) on the input buffer
silverpanda 11:4c6c6d6c0ebe 100 while(!found
silverpanda 11:4c6c6d6c0ebe 101 && (characterCount >= stringLength)
silverpanda 11:4c6c6d6c0ebe 102 && (startPointer <= characterCount - stringLength)) {
silverpanda 11:4c6c6d6c0ebe 103
silverpanda 10:85a8da3b7e5e 104 // start at the beginning of the compare string (thisString)
silverpanda 9:f9efd3a69c2d 105 found = true;
silverpanda 9:f9efd3a69c2d 106 characterPointer = 0;
silverpanda 9:f9efd3a69c2d 107 while(found && (characterPointer < stringLength)) {
silverpanda 11:4c6c6d6c0ebe 108
silverpanda 10:85a8da3b7e5e 109 // get and compare characters
silverpanda 9:f9efd3a69c2d 110 firstChar = inputBuffer[startPointer + characterPointer];
silverpanda 9:f9efd3a69c2d 111 secondChar = thisString[characterPointer];
silverpanda 11:4c6c6d6c0ebe 112 found = (lowercase(firstChar) == lowercase(secondChar));
silverpanda 11:4c6c6d6c0ebe 113
silverpanda 10:85a8da3b7e5e 114 // for debugging
silverpanda 9:f9efd3a69c2d 115 // usbSerial->printf("(compare %c with %c)\n", firstChar, secondChar);
silverpanda 11:4c6c6d6c0ebe 116
silverpanda 10:85a8da3b7e5e 117 // move up to next characters
silverpanda 9:f9efd3a69c2d 118 characterPointer++;
silverpanda 9:f9efd3a69c2d 119 }
silverpanda 11:4c6c6d6c0ebe 120
silverpanda 10:85a8da3b7e5e 121 // move start position
silverpanda 10:85a8da3b7e5e 122 if(found) {
silverpanda 10:85a8da3b7e5e 123 newStartLocation = startPointer + stringLength;
silverpanda 11:4c6c6d6c0ebe 124
silverpanda 10:85a8da3b7e5e 125 // clean up from buffer
silverpanda 10:85a8da3b7e5e 126 characterPointer = newStartLocation;
silverpanda 10:85a8da3b7e5e 127 while(characterPointer < characterCount) {
silverpanda 10:85a8da3b7e5e 128 firstChar = inputBuffer[characterPointer];
silverpanda 10:85a8da3b7e5e 129 inputBuffer[characterPointer - newStartLocation] = firstChar;
silverpanda 10:85a8da3b7e5e 130 characterPointer++;
silverpanda 10:85a8da3b7e5e 131 }
silverpanda 10:85a8da3b7e5e 132 characterCount -= newStartLocation;
silverpanda 10:85a8da3b7e5e 133 inputBuffer[characterCount] = 0;
silverpanda 11:4c6c6d6c0ebe 134
silverpanda 10:85a8da3b7e5e 135 // for debugging send buffer
silverpanda 10:85a8da3b7e5e 136 /*
silverpanda 10:85a8da3b7e5e 137 if(characterCount) {
silverpanda 10:85a8da3b7e5e 138 sendText(" is now \"");
silverpanda 10:85a8da3b7e5e 139 sendText(inputBuffer);
silverpanda 10:85a8da3b7e5e 140 sendText("\"");
silverpanda 10:85a8da3b7e5e 141 }
silverpanda 10:85a8da3b7e5e 142 */
silverpanda 10:85a8da3b7e5e 143 }
silverpanda 11:4c6c6d6c0ebe 144
silverpanda 9:f9efd3a69c2d 145 startPointer++;
silverpanda 9:f9efd3a69c2d 146 }
silverpanda 11:4c6c6d6c0ebe 147
silverpanda 10:85a8da3b7e5e 148 // report
silverpanda 9:f9efd3a69c2d 149 return found;
silverpanda 9:f9efd3a69c2d 150 }
silverpanda 9:f9efd3a69c2d 151 //-----------------------------------------------------------------------------
silverpanda 9:f9efd3a69c2d 152
silverpanda 9:f9efd3a69c2d 153 void Shell::parseCommands()
silverpanda 9:f9efd3a69c2d 154 {
silverpanda 11:4c6c6d6c0ebe 155 if(findString("set")) sendText(" -- \"set\" found!");
silverpanda 11:4c6c6d6c0ebe 156 if(findString("Clark")) sendText(" -- \"Clark\" found!");
silverpanda 11:4c6c6d6c0ebe 157 if(findString("Stefan")) sendText(" -- Hi \"Stefan\"!");
silverpanda 11:4c6c6d6c0ebe 158 if(findString("Ralph")) sendText(" -- Hey, that's me!");
silverpanda 11:4c6c6d6c0ebe 159
silverpanda 12:b846b64e3980 160 if(findString("turn")) parseLEDState();
silverpanda 9:f9efd3a69c2d 161 }
silverpanda 9:f9efd3a69c2d 162 //-----------------------------------------------------------------------------
silverpanda 11:4c6c6d6c0ebe 163
silverpanda 12:b846b64e3980 164 void Shell::parseLEDState()
silverpanda 11:4c6c6d6c0ebe 165 {
silverpanda 11:4c6c6d6c0ebe 166 // example text: turn blue LED on
silverpanda 11:4c6c6d6c0ebe 167
silverpanda 11:4c6c6d6c0ebe 168 eLEDColor ledColor = lcNone;
silverpanda 11:4c6c6d6c0ebe 169 if(findString("red")) ledColor = lcRed;
silverpanda 11:4c6c6d6c0ebe 170 if(findString("blue")) ledColor = lcBlue;
silverpanda 11:4c6c6d6c0ebe 171 if(findString("green")) ledColor = lcGreen;
silverpanda 11:4c6c6d6c0ebe 172
silverpanda 12:b846b64e3980 173 // check if color is specified
silverpanda 11:4c6c6d6c0ebe 174 if(ledColor == lcNone) {
silverpanda 11:4c6c6d6c0ebe 175 sendText(" -- missing LED color: red, blue or green");
silverpanda 11:4c6c6d6c0ebe 176 sendExample();
silverpanda 11:4c6c6d6c0ebe 177 }
silverpanda 11:4c6c6d6c0ebe 178 else {
silverpanda 12:b846b64e3980 179
silverpanda 12:b846b64e3980 180 // check if LED is specified
silverpanda 11:4c6c6d6c0ebe 181 if(findString("LED")) {
silverpanda 11:4c6c6d6c0ebe 182
silverpanda 12:b846b64e3980 183 // check for state
silverpanda 11:4c6c6d6c0ebe 184 eState state = stNone;
silverpanda 11:4c6c6d6c0ebe 185 if(findString("on")) state = stOn;
silverpanda 11:4c6c6d6c0ebe 186 if(findString("off")) state = stOff;
silverpanda 11:4c6c6d6c0ebe 187
silverpanda 11:4c6c6d6c0ebe 188 if(state == stNone) {
silverpanda 12:b846b64e3980 189
silverpanda 12:b846b64e3980 190 // state not specified
silverpanda 11:4c6c6d6c0ebe 191 sendText(" -- missing state: on or off");
silverpanda 11:4c6c6d6c0ebe 192 sendExample();
silverpanda 11:4c6c6d6c0ebe 193 }
silverpanda 11:4c6c6d6c0ebe 194 else {
silverpanda 12:b846b64e3980 195
silverpanda 12:b846b64e3980 196 // check if state has changed
silverpanda 12:b846b64e3980 197 if(ledColors->getState(ledColor) == state) {
silverpanda 12:b846b64e3980 198
silverpanda 12:b846b64e3980 199 // state not changed
silverpanda 12:b846b64e3980 200 sendText(" -- already ");
silverpanda 12:b846b64e3980 201 (state == stOn) ? sendText("on") : sendText("off");
silverpanda 12:b846b64e3980 202 }
silverpanda 12:b846b64e3980 203 else {
silverpanda 12:b846b64e3980 204
silverpanda 12:b846b64e3980 205 // state has changed
silverpanda 12:b846b64e3980 206 sendText(" -- done!");
silverpanda 12:b846b64e3980 207 ledColors->turn(ledColor, state);
silverpanda 12:b846b64e3980 208 }
silverpanda 11:4c6c6d6c0ebe 209 }
silverpanda 11:4c6c6d6c0ebe 210 }
silverpanda 11:4c6c6d6c0ebe 211 else {
silverpanda 12:b846b64e3980 212
silverpanda 12:b846b64e3980 213 // LED was not specified
silverpanda 11:4c6c6d6c0ebe 214 sendText(" -- specify LED");
silverpanda 11:4c6c6d6c0ebe 215 sendExample();
silverpanda 11:4c6c6d6c0ebe 216 }
silverpanda 11:4c6c6d6c0ebe 217 }
silverpanda 11:4c6c6d6c0ebe 218 }
silverpanda 11:4c6c6d6c0ebe 219 //-----------------------------------------------------------------------------
silverpanda 11:4c6c6d6c0ebe 220
silverpanda 11:4c6c6d6c0ebe 221 void Shell::sendExample()
silverpanda 11:4c6c6d6c0ebe 222 {
silverpanda 11:4c6c6d6c0ebe 223 sendText(" -> example: turn red LED on");
silverpanda 11:4c6c6d6c0ebe 224 }
silverpanda 11:4c6c6d6c0ebe 225 //-----------------------------------------------------------------------------