groworld/xylem/xylem_serial/xylem_serial.pde

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2009-08-13 17:03:19 +00:00
///////////// part of the groworld HPI prototype
#include <stdio.h>
#define lightpin 1 // light sensor on analog pin 1
#define temppin 0 // humidity sensor on analog pin 0
#define power 8 // power for sensors
unsigned long then = 0; // timer which will run for < 50 days
unsigned long interval = 1; // interval between reads in seconds
///////////// set up & send
void setup()
{
pinMode(power, OUTPUT);
pinMode(temppin, INPUT);
pinMode(lightpin, INPUT);
Serial.begin(9600);
}
int lightlevel ()
{
int light = 0;
light = (analogRead(lightpin));
return light;
}
int templevel ()
{
int temp = 0;
temp = (analogRead(temppin));
return temp;
}
///////////// main loop. sends data to pachube and prints values to serial line
char display[64];
void loop()
{
if (millis() - then > interval*1000) {
then = millis();
sprintf(display, "%u,%u,%u\n", (unsigned int)then, lightlevel(), templevel());
Serial.print(display);
}
}
/////////////