timer issue

[gaggenau]

hi im working on a dmxtester device.
i want to use a single potentiometer to set both channel and dmxvalue .a button to change between set channel mode and dmxvalue mode.
to display the channel and dmx output value I want to use the digitshield.

i have now start writing the code but when im compiling the sketch i get a strange error message:

DigitShield/DigitShield.cpp.o: In function `__vector_9′:
/Users/GET/Documents/Arduino/libraries/DigitShield/DigitShield.cpp:286: multiple definition of `__vector_9′
DmxSimple/DmxSimple.cpp.o:/Users/GET/Documents/Arduino/libraries/DmxSimple/DmxSimple.cpp:141: first defined here

it seems like the error has to do with the libraries im using. could it be a timer issue? or is it some other conflict?
any ideas how to solve it?

#include 





#include 



int sensorPin = A0;    // select the input pin for the potentiometer



int DmxValue = 0;  // variable to store the value coming from the sensor

int buttonState = 0;         // variable for reading the pushbutton status

int ChannelValue=0;

int RawValue1=0;

int RawValue2=0;

const int buttonPin = 7;



void setup() {

DmxSimple.usePin(6);

DigitShield.begin();

pinMode(buttonPin, INPUT);





}



void loop() {

if (buttonState == HIGH) {

// set Dmx channel

RawValue1 = analogRead(sensorPin);

ChannelValue = map(RawValue1, 0, 1023, 1, 512);

DigitShield.setValue(ChannelValue);

}

else {

// Set DMX value

RawValue2 = analogRead(sensorPin);

DmxValue = map(RawValue2, 0, 1023, 0, 255);

DigitShield.setValue(DmxValue);

}





DmxSimple.write(ChannelValue, DmxValue);



}

[Michael]

Yes, it looks like a timer conflict. The Digit Shield uses Timer 2 for the multiplexing of digits. If your DMX code doesn’t use Timer 1, I could show you how to change the Digit Shield library to use Timer 1 for the multiplexing.

I’m pretty sure the initialization would be this:

  // TIMER1

// Disable the timer overflow interrupt

TIMSK1 &= ~(1 << TOIE1);



// Set timer1 to normal mode

TCCR1A &= ~((1 << WGM11) | (1 << WGM10));

TCCR1B &= ~((1 << WGM13) | (1 << WGM12));



// Disable compare match interrupt

TIMSK1 &= ~(1 << OCIE1A);

TIMSK1 &= ~(1 << OCIE1B);



// Prescalar is clock divided by 128

TCCR1B &= ~(1 << CS12);

TCCR1B &= ~(1 << CS11);

TCCR1B |= (1 << CS10);



// Start the counting at 0

TCNT1 = 0;



// Enable the timer2 overflow interrupt

TIMSK1 |= (1 << TOIE1);

and the overflow ISR is this:

ISR(TIMER1_OVF_vect) {

TCNT1 = 0;

for(int i=0;i
digitShields->isr();

}

}

[gaggenau]

Thanks!!
Timer1 worked great.

here is the finnish code:

#include 



#include 







int sensorPin = A0;    // select the input pin for the potentiometer



int DmxValue = 0;  // variable to store the value coming from the sensor

int ChannelValue=0;

int RawValue1=0;

int RawValue2=0;

const int buttonPin = 7;



void setup() {

DmxSimple.usePin(6);// as standard the DmxSimple uses D3 but for this we need D7

DigitShield.begin();

pinMode(buttonPin, INPUT);

digitalWrite(buttonPin, HIGH);





}



void loop() {

int val = digitalRead(buttonPin);

if (val == LOW) {

// set Dmx channel

RawValue1 = analogRead(sensorPin);

ChannelValue = map(RawValue1, 0, 1023, 1, 512);

DigitShield.setValue(ChannelValue);

}

else {

// Set DMX value

RawValue2 = analogRead(sensorPin);

DmxValue = map(RawValue2, 0, 1023, 0, 255);

DigitShield.setValue(DmxValue);

}





DmxSimple.write(ChannelValue, DmxValue);



}

[vince]

Hi Michael,

I’ve troubles with the use of and simultaneously and I think it’s due to the Timer part but I don’t know how I can fix this.

the receiver is not receiving data if I setup “DigitShield.begin();” which is needed to drive the led segments.
The receiver works and I can watch my data on the Serial if I bypass it “//DigitShield.begin();”
Of course, the DigitShield library works great if I use it without VirtualWire.

#include 

#include 



int i;

int val;



void setup(){

Serial.begin(9600);

vw_setup(9600);

vw_rx_start();

DigitShield.begin();

Serial.println("Ready");

}



void loop(){

uint8_t buf[VW_MAX_MESSAGE_LEN];

uint8_t buflen = VW_MAX_MESSAGE_LEN;

if (vw_get_message(buf, &buflen)) { // check to see if anything has been received

for (i = 0; i < buflen; i++) {

val = buf;

Serial.print("temp :");

Serial.println(val);

DigitShield.setValue(val);

}

}

}

Hope you will have suggestions.
Regards
Vince

[Michael]

Does the virtualwire library use timer2?

[vince]

Hi Michael,

thanks again for your help.

Here is the Timer part of the VirtualWire.h library. I’m not very comfortable with this part of the code but I guess that it uses Timer1.

I’ve download the VirtualWire Library v1.9 just here http://www.open.com.au/mikem/arduino/

// Speed is in bits per sec RF rate

void vw_setup(uint16_t speed)

{

// Calculate the OCR1A overflow count based on the required bit speed

// and CPU clock rate

uint16_t ocr1a = (F_CPU / 8UL) / speed;



#ifndef TEST

// Set up timer1 for a tick every 62.50 microseconds

// for 2000 bits per sec

TCCR1A = 0;

TCCR1B = _BV(WGM12) | _BV(CS10);

// Caution: special procedures for setting 16 bit regs

OCR1A = ocr1a;

// Enable interrupt

#ifdef TIMSK1

// atmega168

TIMSK1 |= _BV(OCIE1A);

#else

// others

TIMSK |= _BV(OCIE1A);

#endif



#endif



// Set up digital IO pins

pinMode(vw_tx_pin, OUTPUT); // currently configured to IO pin 12

pinMode(vw_rx_pin, INPUT);// currently configured to IO 11

pinMode(vw_ptt_pin, OUTPUT);// currently configured to IO 10

digitalWrite(vw_ptt_pin, vw_ptt_inverted);// currently configured to IO 0

}

Sure you will understand this better than me ::)

[Author]

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