Replaced serial parser, verified parameters update
Progress on https://github.com/pyr0ball/pyr0piezo/issues/2 See notes on wiki for serial input format
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1 changed files with 219 additions and 186 deletions
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@ -29,6 +29,33 @@
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This code is in the public domain.
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*/
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/* To set the below parameters using serial input, use the following:
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To change trigger active duration: TRG_D [integer for milliseconds]
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To change gain factor: GAIN_F [integer for gain state - see note*]
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To change sensor input pullup vRef high threshold: VADJH [float value]
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To change sensor input pullup vRef low threshold: VADJL [float value]
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To change comparator trigger high threshold: VCOMPH [float value]
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To change comparator trigger high threshold: VCOMPL [float value]
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These commands should be wrapped in this format:
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<CMD, INT, FLOAT>
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You must include the unused variable for each instance.
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Examples:
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<GAIN_F, 3, 0.00>
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<VADJH, 0, 2.35>
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*Note for Gain Factor:
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The gain STATE is representative of these values:
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0 = 3x
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1 = 3.5x
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2 = 4.33x
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3 = 6x
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4 = 11x
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*/
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// Set variables for working parameters
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int GAIN_FACTOR = 2; // Gain adjustment factor. 0=2x, 1=2.5x, 2=3.33x, 3=5x, 4=10x
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int InitCount = 6; // Number of times to blink the LED on start
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@ -86,9 +113,16 @@ int BlinkState = LOW;
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int BlinkCount = InitCount * 2; // Multiply Blink count by 2 to handle toggle state
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// Serial Input Parsing Variables
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String readString, substring;
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int loc;
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const byte buffSize = 40;
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char inputBuffer[buffSize];
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const char startMarker = '<';
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const char endMarker = '>';
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byte bytesRecvd = 0;
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bool readInProgress = false;
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bool serialIncoming = false;
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char serialMessageIn[buffSize] = {0};
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int serialInt = 0;
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float serialFloat = 0.00;
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void setup() {
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pinMode(TRG_OUT, OUTPUT); // declare the Trigger as as OUTPUT
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@ -135,10 +169,6 @@ void adjustFollow() {
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// Analog output (PWM) of duty cycle
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analogWrite(V_FOL_PWM, ADJ_FOLLOW);
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Serial.print("Follower State:");
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Serial.println(ADJ_FOLLOW);
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Serial.println("--------------------");
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}
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/*------------------------------------------------*/
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@ -153,10 +183,6 @@ void adjustComp() {
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}
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analogWrite(VCOMP_PWM, ADJ_COMP);
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Serial.print("Comparator State:");
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Serial.println(ADJ_COMP);
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Serial.println("--------------------");
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}
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/*------------------------------------------------*/
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@ -221,165 +247,125 @@ void checkError () {
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void serialInput() {
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//expect a string like VFOLH2.35 VFOLL1.80 VCOMPH2.75 VCOMPL2.54 GFACT2
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// receive data from Serial and save it into inputBuffer
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if (Serial.available()) {
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char c = Serial.read(); //gets one byte from serial buffer
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if (c == '\n') { //looks for end of data packet marker
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//if (c == ',') {
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Serial.println(readString); //prints string to serial port out
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if(Serial.available() > 0) {
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char x = Serial.read();
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//Analyze each input
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loc = readString.indexOf("VFOLH");
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//Serial.println(loc);
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if (loc != -1) {
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substring = readString.substring(loc+5, loc+9);
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if (isFloat(substring)) {
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char carray[substring.length() + 1]; // determine size of the array
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substring.toCharArray(carray, sizeof(carray)); // puts substring into an array
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senseHighThrs = atof(carray);
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}
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Serial.print("VFollowHigh: ");
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Serial.println(substring);
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} else {
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Serial.print("VFollowHigh: ");
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Serial.println("NA");
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// the order of these IF clauses is significant
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if (x == endMarker) {
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readInProgress = false;
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serialIncoming = true;
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inputBuffer[bytesRecvd] = 0;
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parseData();
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}
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loc = readString.indexOf("VFOLL");
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//Serial.println(loc);
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if (loc != -1) {
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substring = readString.substring(loc+5, loc+9);
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if (isFloat(substring)) {
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char carray[substring.length() + 1]; // determine size of the array
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substring.toCharArray(carray, sizeof(carray)); // puts substring into an array
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senseLowThrs = atof(carray);
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if(readInProgress) {
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inputBuffer[bytesRecvd] = x;
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bytesRecvd ++;
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if (bytesRecvd == buffSize) {
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bytesRecvd = buffSize - 1;
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}
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Serial.print("VFollowLow: ");
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Serial.println(substring);
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} else {
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Serial.print("VFollowLow: ");
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Serial.println("NA");
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}
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loc = readString.indexOf("VCOMPH");
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//Serial.println(loc);
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if (loc != -1) {
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substring = readString.substring(loc+6, loc+10);
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if (isFloat(substring)) {
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char carray[substring.length() + 1]; // determine size of the array
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substring.toCharArray(carray, sizeof(carray)); // puts substring into an array
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compHighThrs = atof(carray);
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if (x == startMarker) {
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bytesRecvd = 0;
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readInProgress = true;
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}
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Serial.print("VCompHigh: ");
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Serial.println(substring);
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} else {
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Serial.print("VCompHigh: ");
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Serial.println("NA");
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}
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}
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loc = readString.indexOf("VCOMPL");
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//Serial.println(loc);
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if (loc != -1) {
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substring = readString.substring(loc+6, loc+10);
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if (isFloat(substring)) {
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char carray[substring.length() + 1]; // determine size of the array
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substring.toCharArray(carray, sizeof(carray)); // puts substring into an array
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compLowThrs = atof(carray);
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}
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Serial.print("VCompLow: ");
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Serial.println(substring);
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} else {
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Serial.print("VCompLow: ");
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Serial.println("NA");
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}
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/*------------------------------------------------*/
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loc = readString.indexOf("GFACT");
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//Serial.println(loc);
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if (loc != -1) {
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substring = readString.substring(loc+5, loc+9);
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char carray[substring.length() + 1]; // determine size of the array
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substring.toCharArray(carray, sizeof(carray)); // puts substring into an array
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GAIN_FACTOR = atof(carray);
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Serial.print("GainFactor: ");
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Serial.println(substring);
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} else {
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Serial.print("GainFactor: ");
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Serial.println("NA");
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}
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void parseData() {
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readString=""; //clears variable for new input
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substring="";
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// split the data into its parts
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}
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else {
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readString += c; //makes the string readString
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}
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}
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char * strtokIndx; // this is used by strtok() as an index
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strtokIndx = strtok(inputBuffer,","); // get the first part - the string
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strcpy(serialMessageIn, strtokIndx); // copy it to serialMessageIn
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strtokIndx = strtok(NULL, ","); // this continues where the previous call left off
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serialInt = atoi(strtokIndx); // convert this part to an integer
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strtokIndx = strtok(NULL, ",");
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serialFloat = atof(strtokIndx); // convert this part to a float
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}
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// Routine for checking if string is a valid number
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boolean isFloat(String tString) {
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String tBuf;
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boolean decPt = false;
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/*------------------------------------------------*/
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if(tString.charAt(0) == '+' || tString.charAt(0) == '-') tBuf = &tString[1];
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else tBuf = tString;
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for(int x=0;x<tBuf.length();x++)
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{
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if(tBuf.charAt(x) == '.') {
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if(decPt) return false;
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else decPt = true;
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void updateParams() {
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if (strcmp(serialMessageIn, "TRG_D") == 0) {
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updateTrigDuration();
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}
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else if(tBuf.charAt(x) < '0' || tBuf.charAt(x) > '9') return false;
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if (strcmp(serialMessageIn, "GAIN_F") == 0) {
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updateGainFactor();
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}
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if (strcmp(serialMessageIn, "VCOMPH") == 0) {
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updateVCompH();
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}
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if (strcmp(serialMessageIn, "VCOMPL") == 0) {
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updateVCompL();
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}
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if (strcmp(serialMessageIn, "VADJH") == 0) {
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updateVAdjH();
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}
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if (strcmp(serialMessageIn, "VADJL") == 0) {
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updateVAdjL();
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}
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return true;
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}
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/*------------------------------------------------*/
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void loop() {
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// Blink LED's on init
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if (BlinkCount > 0) {
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BlinkState = !BlinkState;
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digitalWrite(ERR_LED, BlinkState);
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digitalWrite(TRG_OUT, BlinkState);
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delay(150);
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--BlinkCount;
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void updateTrigDuration() {
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if (serialInt >= 0) {
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TRG_DUR = serialInt;
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}
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}
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/*------------------------------------------------*/
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// Check voltage of first and second stages and compare against thresholds
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void updateGainFactor() {
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if (serialInt >= 0) {
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GAIN_FACTOR = serialInt;
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}
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}
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/*------------------------------------------------*/
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VComp = analogRead(VCOMP_SENSE_PIN);
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diffCompL = VComp - compLowInt;
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diffCompH = compHighInt - VComp;
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VCompRef = (VComp * 5) / 1024;
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void updateVCompH() {
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if (serialInt >= 0) {
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compHighThrs = ((float)serialFloat);
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}
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}
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/*------------------------------------------------*/
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VAdj = analogRead(V_FOLLOW_PIN);
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diffAdjL = VAdj - senseLowInt;
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diffAdjH = senseHighInt - VAdj;
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vAdjRead = (VAdj * 5) / 1024;
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void updateVCompL() {
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if (serialInt >= 0) {
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compLowThrs = ((float)serialFloat);
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}
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}
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/*------------------------------------------------*/
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// Set the amplification gain factor
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adjustGain();
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void updateVAdjH() {
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if (serialInt >= 0) {
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senseHighThrs = ((float)serialFloat);
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}
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}
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/*------------------------------------------------*/
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// Voltage Follower adjustment
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adjustFollow();
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// Voltage Comparator adjustment
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adjustComp();
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// Check for error state
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checkError();
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// Get Serial Input
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serialInput();
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void updateVAdjL() {
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if (serialInt >= 0) {
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senseLowThrs = ((float)serialFloat);
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}
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}
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/*------------------------------------------------*/
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// Checks state of the interrupt trigger, prints status, then sets output pin low
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void serialReply() {
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if (serialIncoming) {
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serialIncoming = false;
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Serial.print("PZ Status:");
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Serial.println(sensorHReading);
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Serial.print("Voltage Reference:");
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@ -402,4 +388,51 @@ void loop() {
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delay(TRG_DUR);
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digitalWrite(TRG_OUT, HIGH);
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sensorHReading = 0;
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}
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}
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/*------------------------------------------------*/
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void loop() {
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// Blink LED's on init
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if (BlinkCount > 0) {
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BlinkState = !BlinkState;
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digitalWrite(ERR_LED, BlinkState);
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digitalWrite(TRG_OUT, BlinkState);
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delay(TRG_DUR);
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--BlinkCount;
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}
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// Get Serial Input
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serialInput();
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// Set any new parameters from serial input
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updateParams();
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// Check voltage of first and second stages and compare against thresholds
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VComp = analogRead(VCOMP_SENSE_PIN);
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diffCompL = VComp - compLowInt;
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diffCompH = compHighInt - VComp;
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VCompRef = (VComp * 5) / 1024;
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VAdj = analogRead(V_FOLLOW_PIN);
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diffAdjL = VAdj - senseLowInt;
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diffAdjH = senseHighInt - VAdj;
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vAdjRead = (VAdj * 5) / 1024;
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// Set the amplification gain factor
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adjustGain();
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// Voltage Follower adjustment
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adjustFollow();
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// Voltage Comparator adjustment
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adjustComp();
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// Check for error state
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checkError();
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// Reply with status
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serialReply();
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}
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