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Type: Posts; User: bigpilot

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    If CircuitPython can do it, so should the C SDK,...

    If CircuitPython can do it, so should the C SDK, right?
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    Teensy is going to lose out eventually if debug...

    Teensy is going to lose out eventually if debug capability isn't provided at some point.

    RP Pico has debug capability. It runs the debugger one core and the application on the second core....
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    Teensy would need to go with Rust if it wants to...

    Teensy would need to go with Rust if it wants to be taken seriously as far as security is concerned. But Rust has a much higher learning curve than C (I'm also dabbling into Rust).

    Maybe in...
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    I totally misread Paul's answer. But if not a...

    I totally misread Paul's answer.

    But if not a C SDK what then? Arduino would be a mistake IMHO. Teensy is for tinkerers who are fluent in C and comfortable with manipulating registers and such.
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    Good to hear. But if not Makefiles, what other...

    Good to hear. But if not Makefiles, what other options are there? Your own JSON project files?
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    Add Bluetooth BLE on board? A microSD card reader...

    Add Bluetooth BLE on board? A microSD card reader on board?

    Also, a straight C SDK with Makefiles. In addition make an easy to use C library for all the peripherals such as GPIO, I2C, SPI, UART,...
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    You have to ask yourself: "Do I really NEED a...

    You have to ask yourself: "Do I really NEED a Real-Time OS?"

    It adds a lot more complexity and overhead. Maybe you can fix it using interrupt based tasking?

    I've seen a lot of RTOS'es lately,...
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    Also purchased a couple Raspberry Pi Pico's, but...

    Also purchased a couple Raspberry Pi Pico's, but haven't tried them yet. Still need to solder some of the pinheaders.

    But from the documentation it looks like programming in straight C, which I...
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    Thanks for this tip and I got VSCode with...

    Thanks for this tip and I got VSCode with PlatformIO working on Linux Mint and uploaded the Blink programt using Teensy Loader (for Linux).

    However, the PlatformIO for Teensy3.0 is also Arduino...
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    I'm waiting for the Raspberry Pi Foundation to...

    I'm waiting for the Raspberry Pi Foundation to add BLE (Bluetooth Low Energy) to the Pico.

    Maybe an idea for Teensy?
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    Also, for most projects the RP Pico will be more...

    Also, for most projects the RP Pico will be more than sufficient. For more demanding tasks one could purchase a Teensy 3.x or 4.x.
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    Agreed, know thy enemy and adjust your strategy...

    Agreed, know thy enemy and adjust your strategy accordingly.
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    Any word on power draw? It's ussually very hard...

    Any word on power draw? It's ussually very hard to beat an AVR at low clock frequencies.
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    Wow, cool! They can do I2S through GPIO!

    Wow, cool! They can do I2S through GPIO!
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    How about bootloader firmware which checks the...

    How about bootloader firmware which checks the digital signature of the flash upload? Or isn't that secure enough?
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    I was hoping for a full-fledged Linux DIL board,...

    I was hoping for a full-fledged Linux DIL board, but it would've been much pricier and include superfluous overhead such as extra RAM and a MMU. Also, things like IPX (in place execution) would be...
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    I'm actually the reason the Raspberry Pi...

    I'm actually the reason the Raspberry Pi foundation is releasing the Pi Pico.

    A long time ago (two years IIRC) I wrote to the RPF that I wanted a DIL-format Pi for easier breadboarding. This in...
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    Raspberry Pi Pico

    https://www.raspberrypi.org/products/raspberry-pi-pico/

    I will be switching because I absolutely hate working with the Arduino IDE on the Teensy 3.X and haven't been able to rig up my own ARM...
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    Does this library work with the Teensy 3.0?

    Does this library work with the Teensy 3.0?
  20. Thread: I2C woes -

    by bigpilot
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    I found the problem! You won't believe this but...

    I found the problem! You won't believe this but the culprit was actually the green wire, it was defective. I couldn't find any physical damage to it but the continuity tester showed it was open.
    ...
  21. Thread: I2C woes -

    by bigpilot
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    If it's a hardware fault that would mean that two...

    If it's a hardware fault that would mean that two TC74's and two TMP012 boards would all be defective. That would be a unicum.
  22. Thread: I2C woes -

    by bigpilot
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    19601 Here is a picture of the set-up with a...

    19601

    Here is a picture of the set-up with a TC74. Note the pull-ups.
  23. Thread: I2C woes -

    by bigpilot
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    I'm using the TMP102 without pull-ups (tried them...

    I'm using the TMP102 without pull-ups (tried them with pull-ups as well) and commenting out those two lines unfortunately don't make a difference.
  24. Thread: I2C woes -

    by bigpilot
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    I too am a little frustrated with the Wire...

    I too am a little frustrated with the Wire library. I'm using two kinds of temperature sensors (a TC74 and a TMP102 from Sparkfun) and I can't either of them to work. Tried all sorts of things...
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    I'm still waiting for debugging through the USB...

    I'm still waiting for debugging through the USB port. Is this even technically feasible?
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    The original Teensy is AVR based and very...

    The original Teensy is AVR based and very comparable to the Arduino board in terms of performance.

    For most control jobs the Teensy AVR will be more than sufficient. I'm using it for amateur...
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    I was wondering: do we really need a Teensy...

    I was wondering: do we really need a Teensy that's 300 times (!) faster than the original? You could run a complete Linux kernel on this, providing it has sufficient RAM and Flash.
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    Would be nice to have a C download with a sample...

    Would be nice to have a C download with a sample makefile to get people started. Also, some code samples on how to manipulate ports, timers and UART / SPI would be nice.

    I'm planning to make an...
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    Hilarious movie and great piece of work!

    Hilarious movie and great piece of work!
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    What CAE program did you use for the PCB design?

    What CAE program did you use for the PCB design?
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    I'm a great fan of RISC-V but I agree with...

    I'm a great fan of RISC-V but I agree with previous posters that if the design isn't fully open-source there's little benefit. OTOH commercial companies may benefit from a closed design which enables...
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    Using thermal noise from a diode shouldn't be too...

    Using thermal noise from a diode shouldn't be too difficult and I don't believe an adversary would be able to manipulate it through external interference. I saw that the Teensy 3.2 uses dual ring...
  33. Yes, but the IV is not sensitive info, it can be...

    Yes, but the IV is not sensitive info, it can be transmitted in the clear. Point is never to use it more than once.
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    Teensy Loader icon

    Small suggestion: add a program icon to Teensy Loader. I find it a little annoying that when I use alt-tab to switch between processes it only shows a generic system icon. Also it makes visually ...
  35. Thanks, that worked.

    Thanks, that worked.
  36. Is there a way to prevent this?

    Is there a way to prevent this?
  37. I'm using a Teensy 2.0 (Atmel AVR Mega32U4). ...

    I'm using a Teensy 2.0 (Atmel AVR Mega32U4).

    My .eep file looks like this:


    :080000000000000000000000F8
    :00000001FF


    In code I have this:
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    A hardware RNG (based on a noise diode) would be...

    A hardware RNG (based on a noise diode) would be my first priority, and maybe a hardware AES-256 implementation. In addition, a hardware RSA-2048 implementation would be a real boon. Let's face it,...
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    I've implemented XTEA-128-CBC and use an...

    I've implemented XTEA-128-CBC and use an incremental IV and a static key. I use it for transmission between to Teensy controllers via an APC220 wireless serial modem.
  40. How do I prevent EEPROM from being overwritten bij Teensy Loader?

    Is there a way to prevent the Teensy Loader from overwriting EEPROM memory when burning in a new program?

    I'm storing an IV (initialization vector) in EEPROM and when I burn in a new program the...
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    A bootloader is started when the microcontroller...

    A bootloader is started when the microcontroller starts. It contains a small program to which you can connect (through a serial connection over USB in the case of Teensy) and which contains code to...
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    It has started working again, for some...

    It has started working again, for some unfathomable reason. The cable's is good, I've used it for years.

    I do have a Linux PC, but I never use it for Teensy development. I'll give it a try.
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    USB Device Not Recognized

    I sometimes have the problem that Windows does not recognize my Teensy and I therefore am unable to see the debug output from HID Listen.

    I ussually reboot my computer and that often works, but...
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    Threading isn't the problem, it's...

    Threading isn't the problem, it's synchronization. I mean in terms of programming complexity.

    If one only has a single background task, it might be easier to use a timer callback and a volatile...
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    Have you tried setting the start and stop bits...

    Have you tried setting the start and stop bits and parity?

    Below is some of my code I once wrote:


    m_SerialPort = new SerialPort(strSerialPort, BAUD_RATE, Parity.Even, 8, StopBits.One);
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    But the firmware (bootloader) isn't, AFAIK.

    But the firmware (bootloader) isn't, AFAIK.
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    Automotive grade Teensy

    I was wondering if an Automotive Grade Teensy will ever be released for more demanding environments.

    We are thinking about using a Teensy for a small satellite and we need a greater temperature...
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    A Teensy t-shirt should have some humor, not just...

    A Teensy t-shirt should have some humor, not just be a dry advertisement or logo. Anyone have a suggestion?
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    I also pledged $50 for a 3.5 / 3.6 combo....

    I also pledged $50 for a 3.5 / 3.6 combo. However, it would have been so much nicer if a Teensy T-shirt was included in the deal.
  50. Thanks for checking with your Teensy. I tried...

    Thanks for checking with your Teensy. I tried something similar and I noticed that when I connect a write between the D0 pin to VCC the interrupts stop, when I connect the same wire to GND the...
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