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synced 2025-09-17 17:32:25 -07:00
added updated tinypinchange and associated libraries to support PRO
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/*
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_____ ____ __ _ ____ _ _ _ _
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| __ \ / __ \ | \ | | / __ \ | | | | | | | |
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| |__| | | / \_| | . \ | | / / \ \ | | | | \ \ / /
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| _ / | | _ | |\ \| | | |__| | | | | | \ ' /
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| | \ \ | \__/ | | | \ ' | | __ | \ \/ / | |
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|_| \_\ \____/ |_| \__| |_| |_| \__/ |_| 2013/2014
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http://p.loussouarn.free.fr
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*******************************************************
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* <TinyPinChange> library Demo *
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* with debugging capabilities using *
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* <SoftSerial> object as single wire serial interface *
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*******************************************************
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This sketch demonstrates how to use <TinyPinChange> library.
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It counts all the FALLING edges on 2 different pins.
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/!\CAUTION/!\: as <TinyPinChange> library can be shared (and it is with SoftSerial in this sketch) , the user shall test if the changes are related to the declared pins.
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Trick: By connecting Pin#1 to Pin#0 or to Pin#5 through a 1K resistor, you can generate transitions for testing purpose.
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Output results are sent to a software serial.
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And the great thing is: using a <SoftSerial> object as a bi-directionnal software serial port (half-duplex) on a single pin to communicate with the outside world!
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To display the sketch results on a PC (in a Terminal):
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1) Build the "Serial One Wire Debug Cable" and plug it to the regular RS232 port as depicted below,
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2) Open your favorite Terminal at 38400,n,8,1: HyperTerminal, Teraterm (Windows) or Minicom, GtkTerm (Linux) and CoolTerm (MAC) does the trick.
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3) You can also use the Serial Monitor of the arduino IDE: Tools->Serial Port and select your RS232 port (may be an USB virtual port), Rate=38400.
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4) To enable the display, type 1, to disable, type 0 in the Terminal/Monitor.
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SERIAL ONE WIRE
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DEBUGGING CABLE
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_______________ ________________
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/ \___/\___/ \
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____
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.--------. | \
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| GND |--------------------------------+---o5 \
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| | 47K | | 9o |
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| | .--###--' | o4 |
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| DEBUG | 4.7K | | 8o |
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| TX_RX |-------------------###--+--|<|------o3 | ---> To regular RS232 SubD 9 pins Male of PC or Serial/USB adapter
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| PIN | ^ | 1N4148 | 7o |
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| | | '-----------o2 |
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'--------' | | 6o |
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ATtiny85 Single | o1 /
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(Digispark) I/O |____/
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SubD 9 pins
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Female
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*/
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#include <TinyPinChange.h>
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#include <SoftSerial.h>
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#define LED_PIN 1
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#define DEBUG_TX_RX_PIN 2
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#define FIRST_INPUT 0
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#define SECOND_INPUT 5
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volatile uint16_t FirstInputChangeCount = 0; /* Volatile since the variable will be updated in interruption */
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volatile uint16_t SecondInputChangeCount = 0; /* Volatile since the variable will be updated in interruption */
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SoftSerial MySerial(DEBUG_TX_RX_PIN, DEBUG_TX_RX_PIN, true); /* Tx/Rx on a single Pin !!! (Pin#2) */
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uint8_t VirtualPortNb;
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uint8_t VirtualPortNb_;
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void setup()
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{
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TinyPinChange_Init();
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MySerial.begin(38400); /* Trick: use a "high" data rate (less time wasted in ISR and for transmitting each character) */
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VirtualPortNb = TinyPinChange_RegisterIsr(FIRST_INPUT, InterruptFunctionToCall);
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VirtualPortNb_ = TinyPinChange_RegisterIsr(SECOND_INPUT, InterruptFunctionToCall);
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/* Enable Pin Change for each pin */
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TinyPinChange_EnablePin(FIRST_INPUT);
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TinyPinChange_EnablePin(SECOND_INPUT);
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MySerial.txMode();
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MySerial.println(F("\n*** Tiny PinChange Demo (Falling Edge) ***"));
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MySerial.print(F("Pin "));MySerial.print((int)FIRST_INPUT);
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MySerial.print(F(" is part of virtual port "));MySerial.println((int)VirtualPortNb);
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MySerial.print(F("Pin "));MySerial.print((int)SECOND_INPUT);
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MySerial.print(F(" is part of virtual port "));MySerial.println((int)VirtualPortNb_);
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MySerial.println(F("As you can see, virtual port is always port 0 for ATtiny85"));
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MySerial.println(F("Remember <TinyPinChange> is also designed for UNO, MEGA, ATtiny84 and ATtiny167 ;-)"));
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MySerial.println(F("Type 1 to start display, 0 to stop display"));
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pinMode(LED_PIN, OUTPUT);
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MySerial.rxMode(); /* Switch to Rx Mode */
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}
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/* Function called in interruption in case of change on pins */
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void InterruptFunctionToCall(void)
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{
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if(TinyPinChange_FallingEdge(VirtualPortNb, FIRST_INPUT)) /* Check for FIRST_INPUT Rising Edge */
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{
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FirstInputChangeCount++; /* Only Falling edges are counted */
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}
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if(TinyPinChange_FallingEdge(VirtualPortNb_, SECOND_INPUT)) /* Check for SECOND_INPUT Rising Edge */
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{
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SecondInputChangeCount++; /* Only Falling edges are counted */
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}
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}
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void loop()
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{
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static boolean State = HIGH, DisplayEnabled = true;
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static uint32_t LedStartMs = millis(), DisplayStartMs = millis();
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uint16_t LocalFirstInputChangeCount;
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uint16_t LocalSecondInputChangeCount;
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/* Blink the built-in LED */
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if(millis() - LedStartMs >= 500)
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{
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LedStartMs = millis();
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digitalWrite(LED_PIN, State);
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State = !State; /* State will be inverted at the next digitalWrite() */
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}
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/* Get command from single wire SoftSerial */
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if(MySerial.available())
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{
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switch(MySerial.read())
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{
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case '0':
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DisplayEnabled = false;
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break;
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case '1':
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DisplayEnabled = true;
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break;
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}
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}
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/* Diplay Transition numbers every second */
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if((millis() - DisplayStartMs >= 1000) && DisplayEnabled)
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{
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DisplayStartMs = millis();
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noInterrupts(); /* Mandatory since counters are 16 bits */
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LocalFirstInputChangeCount = FirstInputChangeCount;
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LocalSecondInputChangeCount = SecondInputChangeCount;
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interrupts();
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MySerial.txMode();
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MySerial.print(F("FirstInputChangeCount="));MySerial.println(LocalFirstInputChangeCount);
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MySerial.print(F("SecondInputChangeCount="));MySerial.println(LocalSecondInputChangeCount);
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MySerial.rxMode();
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}
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}
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