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Topic: Timer Question (Read 128 times) previous topic - next topic


If I want get the analogread data every 10ms, but also I want get the peak to peak voltage every 1000ms

but in 1000ms I can get the analogread data, after 1000ms I just can't go back to the analogread .

Don't know how to fix my code.......  THX

#include <Timer.h>

Timer tcb;
Timer tcb2;

void analogread() {
  // read the input on analog pin 0:
  int sensorValue = analogRead(A0);
  // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V):
  float voltage = sensorValue * (5.0 / 1023.0);
  // print out the value you read:

void vpp() {
const int sampleWindow = 1000; // Sample window width in mS
unsigned int sample;

   unsigned long startMillis= millis();  // Start of sample window
   unsigned int peakToPeak = 0;   // peak-to-peak level
   unsigned int signalMax = 0;
   unsigned int signalMin = 1024;
   // collect data for 1S
   while (millis() - startMillis < sampleWindow)
      sample = analogRead(A0);
      if (sample < 1024)  // toss out spurious readings
         if (sample > signalMax)
            signalMax = sample;  // save just the max levels
         else if (sample < signalMin)
            signalMin = sample;  // save just the min levels
   peakToPeak = signalMax - signalMin;  // max - min = peak-peak amplitude
   double volts = (peakToPeak * 5) / 1024;  // convert to volts
// the setup routine runs once when you press reset:
void setup() {
  // initialize serial communication at 9600 bits per second:
    tcb.every(1000, vpp);
    tcb2.every(10, analogread);

// the loop routine runs over and over again forever:
void loop() {


I don't know anything about the Timer library.

What you want to do would be easy using millis() as illustrated in Several Things at a Time

Two or three hours spent thinking and reading documentation solves most programming problems.

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