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  • pictographer's Avatar
    07-10-2019, 09:26 PM
    The TimeAlarm library appears to work. I ran the TimeAlarmExample.pde from Paul's github repo. Here's the output: 14:23:02.018 -> 8:29:0014:23:02.952 -> 8:29:01 14:23:03.944 -> 2 second timer 14:23:03.944 -> 8:29:02...
    3769 replies | 389721 view(s)
  • pictographer's Avatar
    07-07-2019, 11:21 PM
    @defragster, thank you. The time appears to be set reasonably by the TeensyLoader. I modified the example to report the time during setup. The example does not recognize that the Teensy is synchronized until it gets...
    3769 replies | 389721 view(s)
  • pictographer's Avatar
    07-07-2019, 08:34 PM
    The Time library used in the TimeSerial example documented in https://www.pjrc.com/teensy/td_libs_Time.html works. To set the time, I needed to use /dev/ttyACM1 because I had a Teensy LC at ttyACM0 so the Teensy 4.0...
    3769 replies | 389721 view(s)
  • pictographer's Avatar
    07-07-2019, 05:24 AM
    The Metro library appears to work, but the example at https://www.pjrc.com/teensy/td_libs_Metro.html uses the obsolete BYTE constant and fails to compile for this reason. I'm not sure if the timing is as precise as we...
    3769 replies | 389721 view(s)
  • pictographer's Avatar
    07-07-2019, 12:35 AM
    KeyPad library appears to work. Very lightly tested. Used the example from https://www.pjrc.com/teensy/td_libs_Keypad.html
    3769 replies | 389721 view(s)
  • pictographer's Avatar
    07-06-2019, 03:45 AM
    The EEPROM library appears to work. I tried EEPROM.wriite() and EEPROM.read(). Looks like 1024 bytes as of 1.47-beta4.
    3769 replies | 389721 view(s)
  • pictographer's Avatar
    07-04-2019, 07:54 AM
    The CryptoAccel library does not appear to be working. Tried manitou's code from Teensy 3.6 testing in post https://forum.pjrc.com/threads/43363-Crypto-acceleration-unit?p=140273&viewfull=1#post140273 a 510e527f...
    3769 replies | 389721 view(s)
  • pictographer's Avatar
    07-03-2019, 11:00 PM
    Hi firehopper, I just got my T4 Beta 2 hardware today and installed 1.47-beta4. Tried compiling my Fast LED sketch for an APA102 strip. Where is the patch you mentioned? When I try to build it, it failed with a...
    3769 replies | 389721 view(s)
  • pictographer's Avatar
    06-27-2019, 04:41 PM
    If you're up for it, I think you can make it more convenient and more secure. What you described doesn't protect against replay attacks. Imagine the attacker uses a Bus Pirate or USB protocol analyzer to capture the...
    5 replies | 201 view(s)
  • pictographer's Avatar
    06-27-2019, 05:39 AM
    Should be possible. You control the software at both ends. The Teensy has persistent memory to store keys and licence parameters. The Teensy can run authentication algorithms and other crypto functions. There are...
    5 replies | 201 view(s)
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About pictographer

Basic Information

About pictographer
Biography:
Learning to control the world, one relay at a time.
Location:
San Jose, CA
Interests:
Home Automation, FPGAs
Occupation:
Software Engineer

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Teensy 4.0 First Beta Test 07-10-2019 09:26 PM
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07-17-2019 12:08 AM
Join Date
05-22-2013