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  1. Thread: Teensy MicroMod

    by Rezo
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    69
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    19,492

    @Ausplex. The MM is a Much better form factor...

    @Ausplex.
    The MM is a Much better form factor for customer products.
    But if you’re looking for smaller footprint and more pins - it’s time to go for a fully customized pcb with the bootloader from...
  2. Piezo buzzer, play tones non blocking - how to?

    I have an application that visually displays alerts on an LCD when a threshold is passed, and I would like to add an audiable notifiation/alarm to this.
    I have a basic buzzer/piezo hooked up to a...
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    @Mark I was referring to using the isotp library...

    @Mark I was referring to using the isotp library in general.
    When a single frame is received it will come through the isotp callback without the first byte (payload length), bit that is found in...
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    Just use ISOTP for everything. It can handle...

    Just use ISOTP for everything.
    It can handle standard frames as well.
    My setup consists of one regular callback that takes care pf flow control if needed, and an isotp callback for all the data....
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    Thanks all for the input! The device is only...

    Thanks all for the input!

    The device is only powered up for a couple hours at a time, so won't hit the millis() max limit.
    But I think I will move over to using elapsed mills as it's just...
  6. Search for an R61529 or IL9488 IPS display on...

    Search for an R61529 or IL9488 IPS display on AliExpress. They work pretty well, but the backlight might not be strong enough for direct sunlight.
    I am using a custom 9488 with a 1000+ nits...
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    Best method for managing multiple tasks?

    I have a fairly complex application that requires some reoccuring fucntion calls on a timed manner; GUI library, CAN bus transmits, SD writes, MTP loop etc
    I am using some delays without delays to...
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    Regardless of being from the latest batch or not,...

    Regardless of being from the latest batch or not, that’s still a shame and quite annoying I must say.

    We’re paying a premium price for these Micromods, just like the Teensy 4.0/4.1, and therefore...
  9. Thank you Paul. Thats a perfectly acceptable...

    Thank you Paul.
    Thats a perfectly acceptable answer! :)
  10. Thanks all for the responses. This is clear to me...

    Thanks all for the responses. This is clear to me now.

    @PaulStoffregen I have a question specifically for you.
    I need pin GPIO_B0_13 for FlexIO2/eLCD interface, but it's used by the bootloader...
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    The form factor of the Micromod is more...

    The form factor of the Micromod is more preferable to some of us, as Dongbone and myself use it in a product. But the reliability is an issue, especially in harder environments.

    On the other, the...
  12. Thanks both for the responses. It confirms what I...

    Thanks both for the responses. It confirms what I thought and understood already from the documentation and some forum posts.
    My goal is to create a hybrid between the T4.1 and MM - I have almost...
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    I believe the small pcb footprint and it’s thin...

    I believe the small pcb footprint and it’s thin form makes it too flexible if not handled with care, and this can cause the (probably poor) solder points on the BGA to come loose.
    Try pushing on the...
  14. Sorry for bumping an old thread, but it answers...

    Sorry for bumping an old thread, but it answers some of my questions, but I have a few more.

    1. Can I use a working bootloader from a Micromod on a fresh IMXRT chip for testing purposes, or would...
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    Happened to us a few times They are not as...

    Happened to us a few times
    They are not as reliable as the Teensy 4.0/4.1, not even close unfortunately.

    https://www.pjrc.com/store/ic_mkl02_t4.html
    Scroll down on this page to see what the...
  16. Hi all, Has anyone gotten FlasherX to update a...

    Hi all,

    Has anyone gotten FlasherX to update a Teensy 4.x from the SD card?
    Is there a size limit to the size of the HEX file? Currently my program uses roughly 33% of Flash memory on a Teensy...
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    A manual fix needs to be applied to the Snooze...

    A manual fix needs to be applied to the Snooze library
    There was a breaking change with TD1.56 I believe: here it is
    Placing startup_early_hook into FLASHMEM will fix the blinking bootloader led...
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    Thanks Paul. Ill implement a call to this...

    Thanks Paul. Ill implement a call to this function and give it a try.

    On a similar topic, I remember reading either on the site or github that to jump from
    USB, a command is sent from the host...
  19. To keep things simple, I would go with an ILI9488...

    To keep things simple, I would go with an ILI9488 in SPI mode or an HX8357 from Adafruit
    Both have supporting libraries for the Teensy, and you can get them up and running quickly with good...
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    Jump Teensy 4.0 to bootloader?

    As title asks, can this be done in software on the Teensy 4.x?
    I found this link but it only covers the old Teensy 1.0/2.0

    Thanks!
  21. You can use FLEXIO3 on the 4.1 and drive it in a...

    You can use FLEXIO3 on the 4.1 and drive it in a polling method as #3 has no DMA support.
    But you are going to have to write the entire library.
    You can look at my simple 8 bit parallel display...
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    I ended up ordering an extra T4.1 and a Rev D...

    I ended up ordering an extra T4.1 and a Rev D audio shield from PJRC.com and called it a day - as mentioned it's an easy fit for the Teensy footprint and has all the hardware I need (mic input and...
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    Thats what I thought. Thanks for confirming!

    Thats what I thought. Thanks for confirming!
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    Nice work so far! I'll be following for the DTC...

    Nice work so far!
    I'll be following for the DTC stuff.. You can unplug your IAT or O2 sensor and start up the car to get a powertrain DTC, should have no harm doing so on idle for a few seconds.
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    @defragster Appreciate the info. From what I've...

    @defragster Appreciate the info. From what I've read in the release notes and some threads is that the MicroMods come with 1.06 shipped, and will be upgraded to 1.07 when flashed with the...
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    Looks like they are sold out on the Audio Shield...

    Looks like they are sold out on the Audio Shield �� so I’ll just place an order through Paul. But I appreciate the efforts to help find a good deal :)
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    Thanks for the link! I’m from Israel for what...

    Thanks for the link!
    I’m from Israel for what it’s worth :)
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    Unfortunately not. And the one big robotics store...

    Unfortunately not. And the one big robotics store that does bring them in charges a whopping 70USD for a 4.1
    I just might order another 4.1 and some flash chips from Paul to make it worthwhile
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    @MichaelMeissner thank you very much for the...

    @MichaelMeissner thank you very much for the detailed response on the LEDs
    I'll get the level shifter and cap anyways just to be on the safe side.

    @h4yn0nnym0u5e I believe I came across your...
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    While the Adafruit buttons/leds matrix will save...

    While the Adafruit buttons/leds matrix will save me a lot of wiring, I feel itís too small for what Iím looking for.

    Iím aiming for something like this:...
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    So been doing some research and I think I know...

    So been doing some research and I think I know what I want:

    1. I'll be using 4*4 (16) 30mm arcade buttons (should I use some multiplexers or just use up 16 digital inputs on the T4.1?)
    2. 16...
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    @PaulStoffregen ? Anyone else have some insights?

    @PaulStoffregen ? Anyone else have some insights?
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    Booloader firmware versions question

    Hi all,

    I have a product that uses the Teensy Micromod and have come across a weird issue:

    I have a customer running an older firmware that was compiled with TD1.56 and his MM runs the...
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    So my test sketch worked, thanks Tony! I do have...

    So my test sketch worked, thanks Tony!
    I do have two more questions:
    1. If the response payload is 8 bytes (single frame) will the isotp callback still trigger?
    2. In the isto constructor the...
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    Great, this is exactly the behavior I would like....

    Great, this is exactly the behavior I would like.

    I modified the sketch, will test it tomorrow.

    #include <FlexCAN_T4.h>
    #include <isotp.h>
    isotp<RX_BANKS_16, 512> tp; /* 16 slots for multi-ID...
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    But I do send out my flow control frame, using...

    But I do send out my flow control frame, using the canSniff callback in my example.
    Per ISOTP, the flow control should be sent after the first frame is received, and not after the request frame has...
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    As I mentioned in the last line of my previous...

    As I mentioned in the last line of my previous post, I transmitted with Can1.write(msg) but then istop did not catch the payload - so the istop callback is never triggered.
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    hi Tony, I created this example: #include...

    hi Tony,

    I created this example:

    #include <FlexCAN_T4.h>
    #include <isotp.h>
    isotp<RX_BANKS_16, 512> tp; /* 16 slots for multi-ID support, at 512bytes buffer each payload rebuild */
    ...
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    So perhaps I could register a regular callback to...

    So perhaps I could register a regular callback to check if the frame starts with 0x10, then send a flow control,
    And I would receive the full payload in the isotp callback? Would that be possible?
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    Ive seen the example, but what’s not clear is do...

    Ive seen the example, but what’s not clear is do I have to send the flow control to the ECU or does the library do that when it receives the first frame?
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    @tony could you help me write a simple sketch...

    @tony could you help me write a simple sketch with the isotp addon?

    Today I am using MBs and three different callbacks (each per ID)
    I would like to send the following frame:
    0x07, 0x22, 0xF4,...
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    I was actually thinking of using some arcade...

    I was actually thinking of using some arcade pushbuttons and some neopixel LEDs to create the launchpad look, but on the other hand be easy for the little guy to push/punch :)

    I want this to be...
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    Launchpad for a toddler

    Hi all!

    Been playing around with the Teensy for a few years and I also have a consumer product based off of a Teensy MM. But I've never played with any of the Audio stuff

    I have a 16 month old...
  44. This is very cool! Thank you for sharing!

    This is very cool!
    Thank you for sharing!
  45. I'm not sure at all what the root cause might be,...

    I'm not sure at all what the root cause might be, but I remember having 9 blinks with Snooze after updating to TD1.56 - it might give you some ideas
    You can see here:...
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    @KurtE Thanks! I used the serial stuff while...

    @KurtE

    Thanks!
    I used the serial stuff while debugging on the computer.
    But in the field its standalone - 12v power and CAN to request/respond for data.
    Question is, how long is CrashReport...
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    I used the info from this thread to log the crash...

    I used the info from this thread to log the crash report to the SD card, as I have a device that runs in the car and does crash from time to time for some unknown reason.
    Here is a basic sketch I...
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    22/28 that makes sense and is alright. Thanks...

    22/28 that makes sense and is alright.
    Thanks for running through them!
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    Well, I'm happy to hear that we're not alone, but...

    Well, I'm happy to hear that we're not alone, but sad to hear that this issue is not isolated to us.
    Would you be able to run the the test sketch I posted on each of those working boards to see if...
  50. We do use the SDIO interface to communicate with...

    We do use the SDIO interface to communicate with the card, so I will take on your suggestion to use SD.mediaPresent to check if it's still there, and I'll reserve the card detect pin for later if it...
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