Hi, I used singleTact sensor for my project, It perfectly works with Arduino, and its a demo application. the problem is I can not print data in serial (by serial.print()) in Arduino code. there is code from the company which works perfectly with their software (windows app). Please help to print data in the serial monitor without using the company software. Thanks here is the code: //----------------------------------------------------------------------------- // Copyright (c) 2015 Pressure Profile Systems // // Licensed under the MIT license. This file may not be copied, modified, or // distributed except according to those terms. //----------------------------------------------------------------------------- #include //For I2C/SMBus #include //For timestamp #define CMD_READ 0x01 #define CMD_WRITE 0x02 #define CMD_TOGGLE_GPIO 0x03 #define CMD_WRITE_CAL 0x04 #define TOGGLE_ALL 0x08 #define TOGGLE_NONE 0x00 //Constants //General I2C packet structure const byte I2C_HEADER1 = 0; const byte I2C_HEADER2 = 1; const byte I2C_HEADER3 = 2; const byte I2C_HEADER4 = 3; const byte I2C_ADDRESS_BYTE = 4; const byte I2C_TIMOUT_BYTE = 5; const byte I2C_ID_BYTE = 6; const byte I2C_NUM_FOOTER_BYTES = 4; const byte I2C_TO_SENSOR_BUFFER_LENGTH = 32; const byte I2C_TIMEOUT = 100; //100ms //From PC const byte I2C_FROMPC_CMD = 7; const byte I2C_FROMPC_READWRITE_LOCATION = 8; const byte I2C_FROMPC_NUM_BYTES_TO_READWRITE = 9; const byte SERIAL_FROMPC_BUFFER_LENGTH = 43; const byte MINIMUM_FROMPC_PACKETLENGTH = 13; //I2C_FROMPC_NUM_BYTES_TO_READWRITE + 4 footer bytes //To PC const byte I2C_TOPC_TIMESTAMP = 7; const byte I2C_TOPC_NBYTES = 11; const byte SERIAL_TOPC_BUFFER_LENGTH = 77; // Pin 13 has an LED connected. int led = 13; // Pin 2, 3, 4, 5, 6, 7 are reserved for Power Line int singleTact1 = 2; int singleTact2 = 3; int singleTact3 = 4; int singleTact4 = 5; int singleTact5 = 6; int singleTact6 = 7; //From Arduino to sensor byte outgoingI2CBuffer[I2C_TO_SENSOR_BUFFER_LENGTH]; //From Arduino to PC host byte serialToPCBuffer[SERIAL_TOPC_BUFFER_LENGTH]; byte serialToPCBufferIndex_ = 0; //From PC host to Arduino byte serialIncomingBuffer[SERIAL_FROMPC_BUFFER_LENGTH]; byte serialIncomingBufferIndex_ = 0; unsigned long timeStamp_; //Zero a buffer void BlankBuffer(byte* buffer, byte length) { for(int i = 0; i < length; i++) { buffer[i] = 0; } } void ResetSerialBuffer() { for(int i = 0; i < SERIAL_FROMPC_BUFFER_LENGTH; i++) { serialIncomingBuffer[i] = 0; } serialIncomingBufferIndex_ = 0; } void setup() { int i; Wire.begin(); // join i2c bus (address optional for master) pinMode(led, OUTPUT); Serial.begin(115200); // start serial for output //Serial.flush(); pinMode(singleTact1, OUTPUT); pinMode(singleTact2, OUTPUT); pinMode(singleTact3, OUTPUT); pinMode(singleTact4, OUTPUT); pinMode(singleTact5, OUTPUT); pinMode(singleTact6, OUTPUT); BlankBuffer(outgoingI2CBuffer, I2C_TO_SENSOR_BUFFER_LENGTH); //Never changes, so just set now serialToPCBuffer[I2C_HEADER1] = 0xFF; serialToPCBuffer[I2C_HEADER2] = 0xFF; serialToPCBuffer[I2C_HEADER3] = 0xFF; serialToPCBuffer[I2C_HEADER4] = 0xFF; digitalWrite(led, HIGH); timeStamp_ = 0; startTimer1(100); //Timer for timestamp } //Check the full footer boolean Checkfooter(int endOfPacket) { for(int i = 0; i < 4; i++) { if(serialIncomingBuffer[endOfPacket - i] != 0xFE) { return false; //Footer corrupt } } return true; //Footer all good } //Check available header bytes (called as each one comes in, building upto 4) boolean Checkheader(int checkMaxIndex) { for(int j = 0; j 0) { //Read the new byte serialIncomingBuffer[serialIncomingBufferIndex_] = Serial.read(); } else { //No new data return false; } if(false == Checkheader(serialIncomingBufferIndex_)) { ResetSerialBuffer(); //Header not correct, reset buffer return false; } //Do we have enough data to process if(serialIncomingBufferIndex_ >MINIMUM_FROMPC_PACKETLENGTH) { if(CMD_READ == serialIncomingBuffer[I2C_FROMPC_CMD]) { i2cPacketLength = 0; } else { i2cPacketLength = serialIncomingBuffer[I2C_FROMPC_NUM_BYTES_TO_READWRITE]; } //Do we have a full packet if(serialIncomingBufferIndex_ >= (i2cPacketLength + MINIMUM_FROMPC_PACKETLENGTH + 1)) { if(Checkfooter(serialIncomingBufferIndex_)) { //We have a good packet return true; } else { //Corrupt packet, reset ResetSerialBuffer(); return false; } } } //We have run out of buffer space - something has gone wrong, so just reset the buffer if(serialIncomingBufferIndex_ >= (SERIAL_FROMPC_BUFFER_LENGTH -1)) { ResetSerialBuffer(); } serialIncomingBufferIndex_++; //Move the index on return false; //Not at the end of the packet yet } // Define the function which will handle the notifications ISR(timer1Event) { resetTimer1(); timeStamp_++; } void loop() { byte inputBuffer[43]; byte finishedPacket = false; byte timeout = 5; byte i = 0; byte lengthReceived = 0; if(ProcessIncomingSerialData()) { if(CMD_WRITE == serialIncomingBuffer[I2C_FROMPC_CMD]) { //We are changing settings if(serialIncomingBuffer[I2C_FROMPC_NUM_BYTES_TO_READWRITE] > 0) { //Create return packet for the PC serialToPCBuffer[I2C_ADDRESS_BYTE] = serialIncomingBuffer[I2C_ADDRESS_BYTE]; serialToPCBuffer[I2C_TIMOUT_BYTE] = 0; //We did not timeout serialToPCBuffer[I2C_ID_BYTE] = serialIncomingBuffer[I2C_ID_BYTE]; serialToPCBuffer[I2C_TOPC_NBYTES] = 0; //No data, just ack serialToPCBuffer[I2C_TOPC_NBYTES+1] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES+2] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES+3] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES+4] = 0xFE; //Transfer data for(int i = 0; i < serialIncomingBuffer[I2C_FROMPC_NUM_BYTES_TO_READWRITE]+4; i++) outgoingI2CBuffer[i] = serialIncomingBuffer[i+I2C_FROMPC_CMD]; //Send I2C packet Wire.beginTransmission(serialIncomingBuffer[I2C_ADDRESS_BYTE]); // transmit to device Wire.write(outgoingI2CBuffer, I2C_TO_SENSOR_BUFFER_LENGTH); Wire.endTransmission(); // stop transmitting //Send serial ack to PC for(int i = 0; i < (I2C_TOPC_NBYTES+5); i++) Serial.write(serialToPCBuffer[i]); } } else if(CMD_READ == serialIncomingBuffer[I2C_FROMPC_CMD]) { byte i2cPacketLength = serialIncomingBuffer[I2C_FROMPC_NUM_BYTES_TO_READWRITE]; serialToPCBuffer[I2C_ADDRESS_BYTE] = serialIncomingBuffer[I2C_ADDRESS_BYTE]; serialToPCBuffer[I2C_TIMOUT_BYTE] = 0; serialToPCBuffer[I2C_ID_BYTE] = serialIncomingBuffer[I2C_ID_BYTE]; serialToPCBuffer[I2C_TOPC_NBYTES] = i2cPacketLength; serialToPCBuffer[I2C_TOPC_TIMESTAMP] = (timeStamp_ >> 24); serialToPCBuffer[I2C_TOPC_TIMESTAMP + 1 ] = (timeStamp_ >> 16) & 0xFF; serialToPCBuffer[I2C_TOPC_TIMESTAMP + 2 ] = (timeStamp_ >> 8) & 0xFF; serialToPCBuffer[I2C_TOPC_TIMESTAMP + 3 ] = timeStamp_ & 0xFF; //Perform I2C Read outgoingI2CBuffer[0] = CMD_READ; outgoingI2CBuffer[1] = serialIncomingBuffer[I2C_FROMPC_READWRITE_LOCATION]; outgoingI2CBuffer[2] = serialIncomingBuffer[I2C_FROMPC_NUM_BYTES_TO_READWRITE]; //Send I2C packet Wire.beginTransmission(serialIncomingBuffer[I2C_ADDRESS_BYTE]); // transmit to device Wire.write(outgoingI2CBuffer, 3); //Only requires 3 bytes Wire.endTransmission(); // stop transmitting Wire.requestFrom(serialIncomingBuffer[I2C_ADDRESS_BYTE], serialIncomingBuffer[I2C_FROMPC_NUM_BYTES_TO_READWRITE]); //Parse request int i = 0; int i2cTimeout = I2C_TIMEOUT; //1s while( i 0) // slave may send less than requested { if(Wire.available()) { serialToPCBuffer[I2C_TOPC_NBYTES + 1 + i] = Wire.read(); // receive a byte as character i++; } else { delay(1); //Wait 1ms i2cTimeout--; } } if(0 == timeout) { serialToPCBuffer[I2C_TIMOUT_BYTE] = 1; } //Add footer serialToPCBuffer[I2C_TOPC_NBYTES + 1 + i2cPacketLength] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES + 2 + i2cPacketLength] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES + 3 + i2cPacketLength] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES + 4 + i2cPacketLength] = 0xFE; //Send to PC for(int i = 0; i 0) { //Create return packet for the PC serialToPCBuffer[I2C_ADDRESS_BYTE] = serialIncomingBuffer[I2C_ADDRESS_BYTE]; serialToPCBuffer[I2C_TIMOUT_BYTE] = 0; //We did not timeout serialToPCBuffer[I2C_ID_BYTE] = serialIncomingBuffer[I2C_ID_BYTE]; serialToPCBuffer[I2C_TOPC_NBYTES] = 0; //No data, just ack serialToPCBuffer[I2C_TOPC_NBYTES+1] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES+2] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES+3] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES+4] = 0xFE; //Transfer data for(int i = 0; i < serialIncomingBuffer[I2C_FROMPC_NUM_BYTES_TO_READWRITE]+4; i++) { outgoingI2CBuffer[i] = serialIncomingBuffer[i+I2C_FROMPC_CMD]; } //Send I2C packet Wire.beginTransmission(serialIncomingBuffer[I2C_ADDRESS_BYTE]); // transmit to device Wire.write(outgoingI2CBuffer, I2C_TO_SENSOR_BUFFER_LENGTH); Wire.endTransmission(); // stop transmitting //Send serial ack to PC for(int i = 0; i < (I2C_TOPC_NBYTES+5); i++) { Serial.write(serialToPCBuffer[i]); } } } // Toggle the GPIO Pin to set the I2C address when doing Calibration test else if (CMD_TOGGLE_GPIO == serialIncomingBuffer[I2C_FROMPC_CMD]) { serialToPCBuffer[I2C_ADDRESS_BYTE] = serialIncomingBuffer[I2C_ADDRESS_BYTE]; serialToPCBuffer[I2C_TIMOUT_BYTE] = 0; //We did not timeout serialToPCBuffer[I2C_ID_BYTE] = serialIncomingBuffer[I2C_ID_BYTE]; serialToPCBuffer[I2C_TOPC_NBYTES] = 0; //No data, just ack int toggle = serialToPCBuffer[I2C_FROMPC_CMD+1]; if (TOGGLE_ALL == serialIncomingBuffer[I2C_FROMPC_CMD+1]) { digitalWrite(singleTact1, HIGH); digitalWrite(singleTact2, HIGH); digitalWrite(singleTact3, HIGH); digitalWrite(singleTact4, HIGH); digitalWrite(singleTact5, HIGH); digitalWrite(singleTact6, HIGH); } else if (TOGGLE_NONE == serialIncomingBuffer[I2C_FROMPC_CMD+1]) { digitalWrite(singleTact1, LOW); digitalWrite(singleTact2, LOW); digitalWrite(singleTact3, LOW); digitalWrite(singleTact4, LOW); digitalWrite(singleTact5, LOW); digitalWrite(singleTact6, LOW); Wire.endTransmission(); delay(50); Wire.begin(); } else { digitalWrite(singleTact1, LOW); digitalWrite(singleTact2, LOW); digitalWrite(singleTact3, LOW); digitalWrite(singleTact4, LOW); digitalWrite(singleTact5, LOW); digitalWrite(singleTact6, LOW); digitalWrite(serialIncomingBuffer[I2C_FROMPC_CMD+1], HIGH); } serialToPCBuffer[I2C_TOPC_NBYTES+1] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES+2] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES+3] = 0xFE; serialToPCBuffer[I2C_TOPC_NBYTES+4] = 0xFE; //Send serial ack to PC for(int i = 0; i < (I2C_TOPC_NBYTES+5); i++) { Serial.write(serialToPCBuffer[i]); Serial.print("T"); } } ResetSerialBuffer(); //Reset and wait for next command } }

SingleTact sensor

J-M-L July 7, 2021, 11:55am 2

Hello, do yourself a favour and please read How to get the best out of this forum and modify your post accordingly (including code tags and necessary documentation of your ask).

thanks

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