Forum Rule: Always post complete source code & details to reproduce any issue!
Results 1 to 4 of 4

Thread: Teensy3Clock.get() returns error

  1. #1
    Junior Member
    Join Date
    Oct 2015

    Teensy3Clock.get() returns error

    I am developing a bilge pump counter/elapsed time for my boat. The project is nearly complete and the code ran fine until yesterday when my master boot record became corrupt. I corrected the problem by using my original Windows 7 CD and all of my programs are back up and running… Photoshop, Solidworks, Alibre, Eclipse, MS Visual Studio Express, even Arduino 1.6.5, to name just a few. However, “Teensy3Clock.get()” returns the following error when running the TimeTeensy3 example. It just won't compile. I have not altered the code in any way from the original, as you can see from below. My sketch runs fine on my laptop running V1.0.5. I uninstalled V1.0.5 on my desktop and installed 1.6.5 the other day. I just did the same a few minutes ago with 1.6.5 just to make sure. I don't know if the problem existed before the MBR went bad or it was because I had not yet run it on the current version. What do you suppose the problem is?

    Error Message
    Arduino: 1.6.5 (Windows 7), TD: 1.25, Board: "Arduino/Genuino Uno"
    Build options changed, rebuilding all
    Using library Time in folder: C:\Program Files (x86)\Arduino\libraries\Time (1.0.x format)
    C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10605 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standa rd -IC:\Program Files (x86)\Arduino\libraries\Time C:\Users\Drew\AppData\Local\Temp\build167255668789 0403424.tmp\TimeTeensy3.cpp -o C:\Users\Drew\AppData\Local\Temp\build167255668789 0403424.tmp\TimeTeensy3.cpp.o
    TimeTeensy3.ino: In function 'void loop()':
    TimeTeensy3.ino:27:7: error: 'Teensy3Clock' was not declared in this scope
    TimeTeensy3.ino: In function 'time_t getTeensy3Time()':
    TimeTeensy3.ino:51:10: error: 'Teensy3Clock' was not declared in this scope
    'Teensy3Clock' was not declared in this scope

    * TimeRTC.pde
    * example code illustrating Time library with Real Time Clock.

    #include <Time.h>

    void setup() {
    // set the Time library to use Teensy 3.0's RTC to keep time

    while (!Serial); // Wait for Arduino Serial Monitor to open
    if (timeStatus()!= timeSet) {
    Serial.println("Unable to sync with the RTC");
    } else {
    Serial.println("RTC has set the system time");

    void loop() {
    if (Serial.available()) {
    time_t t = processSyncMessage();
    if (t != 0) {
    Teensy3Clock.set(t); // set the RTC
    void digitalClockDisplay() {
    // digital clock display of the time
    Serial.print(" ");
    Serial.print(" ");
    Serial.print(" ");

    time_t getTeensy3Time()
    return Teensy3Clock.get();

    /* code to process time sync messages from the serial port */
    #define TIME_HEADER "T" // Header tag for serial time sync message

    unsigned long processSyncMessage() {
    unsigned long pctime = 0L;
    const unsigned long DEFAULT_TIME = 1357041600; // Jan 1 2013

    if(Serial.find(TIME_HEADER)) {
    pctime = Serial.parseInt();
    return pctime;
    if( pctime < DEFAULT_TIME) { // check the value is a valid time (greater than Jan 1 2013)
    pctime = 0L; // return 0 to indicate that the time is not valid
    return pctime;

    void printDigits(int digits){
    // utility function for digital clock display: prints preceding colon and leading 0
    if(digits < 10)

    System Information
    OS Name Microsoft Windows 7 Professional
    Version 6.1.7601 Service Pack 1 Build 7601
    Other OS Description Not Available
    OS Manufacturer Microsoft Corporation
    System Name N/A
    System Manufacturer Gigabyte Technology Co., Ltd.
    System Model To be filled by O.E.M.
    System Type x64-based PC
    Processor Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz, 3901 Mhz, 4 Core(s), 8 Logical Processor(s)
    BIOS Version/Date American Megatrends Inc. F7, 5/11/2012
    SMBIOS Version 2.7
    Windows Directory C:\Windows
    System Directory C:\Windows\system32
    Boot Device \Device\HarddiskVolume4
    Locale United States
    Hardware Abstraction Layer Version = "6.1.7601.17514"
    User Name N/A
    Time Zone Eastern Daylight Time
    Installed Physical Memory (RAM) 16.0 GB
    Total Physical Memory 16.0 GB
    Available Physical Memory 13.8 GB
    Total Virtual Memory 31.9 GB
    Available Virtual Memory 28.2 GB
    Page File Space 16.0 GB
    Page File C:\pagefile.sys

  2. #2
    Senior Member+ MichaelMeissner's Avatar
    Join Date
    Nov 2012
    Ayer Massachussetts
    The error message indicates you are compiling it for an Arduino/Uno. You need to change it to Teensy 3.1/3.2. Note, the Teensy LC does not have the real time clock.

  3. #3
    Senior Member
    Join Date
    Dec 2013
    East Stroudsburg PA.
    This Looks Like the easy fix.
    Click image for larger version. 

Name:	TeensyArduinoOptions.JPG 
Views:	109 
Size:	34.1 KB 
ID:	5356

  4. #4
    Junior Member
    Join Date
    Oct 2015
    Thank you all. Problem solved. I presume the compiler changed when I did an Acronis restore, which is when the MBR got overwritten. However, when I reinstalled 1.6.5 it also wrote over the teensyduino files and gave me a file missing error. I reinstalled teensyduino and everything is fine now. As you can see from my many posts :-), I'm not real experienced. Thank you all very much. You saved me many hours. Kind regards. Drew

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts