Hallo,
ich habe einen kapazitiven Sensor, der seine Messwerte als Frequenz ausgobt, die ich mit dem angehängten Code messe - das funktioniert auch gut.
Nun sollen die Messwerte noch auf einem HD44780 LCD ausgegeben werden.
Leider funktioniert das allerdings nicht. Es wird einfach überhaupt nichts angezeigt. Der Displaycode für sich sowohl der "Frequenzcode" funktionieren.
Leider weiß ich nicht, wie ich die beiden zusammenbringe
Kann mir hier jemand helfen?
Grüße
tim
// Timer and Counter example
// Author: Nick Gammon
// Date: 17th January 2012
// Input: Pin D5
#include "Wire.h"
#include "Adafruit_LiquidCrystal.h"
Adafruit_LiquidCrystal lcd(4, 2, 6, 7, 8, 9);
byte block_1[8] = { 0b00000, 0b00000, 0b00000, 0b00000, 0b00000, 0b00000, 0b00000, 0b11111};
byte block_2[8] = { 0b00000, 0b00000, 0b00000, 0b00000, 0b00000, 0b00000, 0b11111, 0b11111};
byte block_3[8] = { 0b00000, 0b00000, 0b00000, 0b00000, 0b00000, 0b11111, 0b11111, 0b11111};
byte block_4[8] = { 0b00000, 0b00000, 0b00000, 0b00000, 0b11111, 0b11111, 0b11111, 0b11111};
byte block_5[8] = { 0b00000, 0b00000, 0b00000, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111};
byte block_6[8] = { 0b00000, 0b00000, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111};
byte block_7[8] = { 0b00000, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111};
byte block_8[8] = { 0b11111, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111};
unsigned long i = 3000;
int sensorValue = 9999;
int k = 6000;
int gegossen = 0;
boolean watering = LOW;
// these are checked for in the main program
volatile unsigned long timerCounts;
volatile boolean counterReady;
// internal to counting routine
unsigned long overflowCount;
unsigned int timerTicks;
unsigned int timerPeriod;
void startCounting (unsigned int ms)
{
counterReady = false; // time not up yet
timerPeriod = ms; // how many 1 ms counts to do
timerTicks = 0; // reset interrupt counter
overflowCount = 0; // no overflows yet
// reset Timer 1 and Timer 2
TCCR1A = 0;
TCCR1B = 0;
TCCR2A = 0;
TCCR2B = 0;
// Timer 1 - counts events on pin D5
TIMSK1 = bit (TOIE1); // interrupt on Timer 1 overflow
// Timer 2 - gives us our 1 ms counting interval
// 16 MHz clock (62.5 ns per tick) - prescaled by 128
// counter increments every 8 µs.
// So we count 125 of them, giving exactly 1000 µs (1 ms)
TCCR2A = bit (WGM21) ; // CTC mode
OCR2A = 124; // count up to 125 (zero relative!!!!)
// Timer 2 - interrupt on match (ie. every 1 ms)
TIMSK2 = bit (OCIE2A); // enable Timer2 Interrupt
TCNT1 = 0; // Both counters to zero
TCNT2 = 0;
// Reset prescalers
GTCCR = bit (PSRASY); // reset prescaler now
// start Timer 2
TCCR2B = bit (CS20) | bit (CS22) ; // prescaler of 128
// start Timer 1
// External clock source on T1 pin (D5). Clock on rising edge.
TCCR1B = bit (CS10) | bit (CS11) | bit (CS12);
} // end of startCounting
ISR (TIMER1_OVF_vect)
{
++overflowCount; // count number of Counter1 overflows
} // end of TIMER1_OVF_vect
//******************************************************************
// Timer2 Interrupt Service is invoked by hardware Timer 2 every 1 ms = 1000 Hz
// 16Mhz / 128 / 125 = 1000 Hz
ISR (TIMER2_COMPA_vect)
{
// grab counter value before it changes any more
unsigned int timer1CounterValue;
timer1CounterValue = TCNT1; // see datasheet, page 117 (accessing 16-bit registers)
unsigned long overflowCopy = overflowCount;
// see if we have reached timing period
if (++timerTicks < timerPeriod)
return; // not yet
// if just missed an overflow
if ((TIFR1 & bit (TOV1)) && timer1CounterValue < 256)
overflowCopy++;
// end of gate time, measurement ready
TCCR1A = 0; // stop timer 1
TCCR1B = 0;
TCCR2A = 0; // stop timer 2
TCCR2B = 0;
TIMSK1 = 0; // disable Timer1 Interrupt
TIMSK2 = 0; // disable Timer2 Interrupt
// calculate total count
timerCounts = (overflowCopy << 16) + timer1CounterValue; // each overflow is 65536 more
counterReady = true; // set global flag for end count period
} // end of TIMER2_COMPA_vect
void setup ()
{
Serial.begin(115200);
Serial.println("Frequency Counter");
pinMode(11, OUTPUT);
pinMode(12, OUTPUT);
digitalWrite(11, HIGH); //grünes kabel
digitalWrite(12, LOW);
pinMode(4, OUTPUT);
pinMode(2, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(6, OUTPUT);
pinMode(12, OUTPUT);
pinMode(11, OUTPUT);
pinMode(5, INPUT);
analogWrite(3, 128);
// set up the LCD's number of rows and columns:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.print("Feuchte:");
lcd.createChar(0, block_1);
lcd.createChar(1, block_2);
lcd.createChar(2, block_3);
lcd.createChar(3, block_4);
lcd.createChar(4, block_5);
lcd.createChar(5, block_6);
lcd.createChar(6, block_7);
lcd.createChar(7, block_8);
} // end of setup
void loop ()
{
// stop Timer 0 interrupts from throwing the count out
byte oldTCCR0A = TCCR0A;
byte oldTCCR0B = TCCR0B;
TCCR0A = 0; // stop timer 0
TCCR0B = 0;
startCounting (500); // how many ms to count for
while (!counterReady)
{ } // loop until count over
// adjust counts by counting interval to give frequency in Hz
float frq = (timerCounts * 1000.0) / timerPeriod;
frq=frq/270;
Serial.print ("Sensor: ");
Serial.println ((unsigned long) frq);
// restart timer 0
TCCR0A = oldTCCR0A;
TCCR0B = oldTCCR0B;
// let serial stuff finish
delay(200);
lcd.clear();
lcd.print("Feuchte:");
lcd.setCursor(8, 0);
lcd.print("Feuchte:");
lcd.setCursor(12, 0);
lcd.print(k);
lcd.setCursor(5, 1); lcd.write(0x0);
lcd.setCursor(6, 1); lcd.write(0x1);
lcd.setCursor(7, 1); lcd.write(0x2);
lcd.setCursor(8, 1); lcd.write(0x3);
lcd.setCursor(9, 1); lcd.write(0x4);
lcd.setCursor(10, 1); lcd.write(0x5);
lcd.setCursor(11, 1); lcd.write(0x6);
lcd.setCursor(12, 1); lcd.write(0x7);
i = i + 1;
} // end of loop
