Store › Forums › Digit Shield › Bugs/Problems › timer issue
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gaggenau.
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September 14, 2011 at 9:03 pm #545
gaggenau
Memberhi 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 hereit 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);
}September 15, 2011 at 12:49 am #1301Michael
KeymasterYes, 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;idigitShields->isr();
}
}
September 15, 2011 at 10:00 pm #1308gaggenau
MemberThanks!!
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);
}February 1, 2012 at 7:18 pm #931vince
MemberHi 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
VinceFebruary 1, 2012 at 10:31 pm #933Michael
KeymasterDoes the virtualwire library use timer2?
February 1, 2012 at 10:56 pm #934vince
MemberHi 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 ::)
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