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  1. Try QNEthernet instead of nativeethernet

    Try QNEthernet instead of nativeethernet
  2. The comment on the MOSFET circuit is still valid,...

    The comment on the MOSFET circuit is still valid, it will probably distort your square waves. You would have to test and look at scope. If you are only 12KHz, it might be fine. But it's not the right...
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    I can't seem to get this working with the...

    I can't seem to get this working with the attached ZIP file or the git lib: https://github.com/FrankBoesing/T4_PowerButton

    The git library tells me the board is not supported. I think...
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    I'll update as i learn more. One MM certainly was...

    I'll update as i learn more. One MM certainly was working for a few days. The other i never was able to get windows to assign a COM port.
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    I'm using my custom board mostly. I have 3...

    I'm using my custom board mostly. I have 3 devices up & running for over 24 hours, so that's good. I'm not doing any code development presently or much rebooting, just letting them run.

    So right...
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    When they bricked, I was developing in the custom...

    When they bricked, I was developing in the custom board, I wasn't using the Sparkfun board for anything but troubleshooting the MM.
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    Did you resolve? I have a couple of Teensy...

    Did you resolve? I have a couple of Teensy MicroMods not responding, one did report the Opps message before giving up. completely.

    I did see the Opps message on another one, was able to recover by...
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    Unsure what it could be. I've been using the...

    Unsure what it could be. I've been using the Sparkfun Datalogging board for my reference, but developing in my custom PCB. I feed it 3.3V from LDO, made from 5V DC/DC brick, being fed 12V, at some...
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    Well, I now have 2 boards that won't yellow...

    Well, I now have 2 boards that won't yellow blink. It used to. I was happily developing with it.

    I tried your hold boot button during powerup (in Sparkfun Data logging board). On device # 1,...
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    No LED change on the MM. Now the MM won't...

    No LED change on the MM.

    Now the MM won't blink blue.

    Was on C to C cable. Just tried on a USB A to USB C Cable. No change.
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    Ok, did that, no effect. Held down BOOT for 15-20...

    Ok, did that, no effect. Held down BOOT for 15-20 seconds, both after powerup and during powerup.

    I scoped the BOOT signal to the MicroMod, U3, Pin10, it's high, goes low when I push BOOT...
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    I'm not sure if this is the same/related issue,...

    I'm not sure if this is the same/related issue, but I've also spun up a MicroMod board for a project, the PCB got assembled yesterday.

    Out of 3 MicroMods, it seemed like the USB wasn't quite...
  13. My Serial RX buffer, which I then send to TCP....

    My Serial RX buffer, which I then send to TCP. The buffer was undersized, so my serial checksums were off.

    I'm unsure about jumbo frames, I never knew what they really were until I googled "max...
  14. I'm interfacing with some legacy hardware over...

    I'm interfacing with some legacy hardware over serial and providing an Ethernet interface that typically exists with the newer models. I don't analyze the data or know much about the control...
  15. Thanks Shawn, yes, MTU, not mpu. Perhaps...

    Thanks Shawn, yes, MTU, not mpu. Perhaps fragmentation will work for me, I'll test this today.

    Still learning this ethernet stuff. Do I need to just make sure my buffers are large enough & simply...
  16. So, what are the chances I can do jumbo frames...

    So, what are the chances I can do jumbo frames and adjust the mpu? I need to send 3-5K jumbo tcp packet.
  17. Thanks for this library, it's working great for...

    Thanks for this library, it's working great for my purposes (Luni came thru with a beta VisualTeensy and a makefile mod got me up and running).

    For the code this is a good example to follow:...
  18. Yes, shared library folder. The comment in...

    Yes, shared library folder.

    The comment in makefile worked, I can compile the blinky. I'll try my full application next and let you know.

    Thank you Luni.

    EDIT: My application compiles now...
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    Thanks vjmuzik, for all your work in this...

    Thanks vjmuzik, for all your work in this library. Too bad the FNET is such a pain.

    I'm trying QNEthernet now.
  20. Luni, Thanks for the quick response. I tried...

    Luni,

    Thanks for the quick response. I tried v1.2.1 beta and it still has the issue.

    Steps to repeat

    1. Visual teensy, create new project in empty folder
    2. Add QNEthernet library
    3. Save...
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    I have a TCP server, stays open as it forms a...

    I have a TCP server, stays open as it forms a serial data bridge with packets going back & forth (4-17 bytes at a time). Nothing incredibly fast, a few packets a second, but I keep getting this...
  22. Has anyone gotten this library to work with...

    Has anyone gotten this library to work with VisualTeensy?

    I was hoping to try it out.

    If I create a new project in VisualTeensy 1.2.0 and only add in the QNEthernet (0.7.0), it won't compile...
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    What mods are needed for airlift?

    What mods are needed for airlift?
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    You can get the Adafruit ones from Mouser without...

    You can get the Adafruit ones from Mouser without the EAR restriction: 485-4622
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    Good to know that works, and very simple. I'll...

    Good to know that works, and very simple. I'll look at that approach, as I'm probably over-thinking it.
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    Thanks for the responses everyone. I'm respinning...

    Thanks for the responses everyone. I'm respinning a custom board to replace T4.1 with MM.

    I have 50W 48VDC stepping down to 12VDC (quarter brick), then I typically make 5V/1A for T4.1, but...
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    So is there a best practice recommendation for...

    So is there a best practice recommendation for Micromod with external power and having USB plugged in at the same time, and can run on one or the other, but not both.

    I typically cut the...
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    Great news. Any guess on a rough release...

    Great news. Any guess on a rough release timeframe for these new Teensys?
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    Im not familiar with tdm, whats the baud rate? Is...

    Im not familiar with tdm, whats the baud rate? Is it point to point or multidrop? Do you need full duplex?

    Consider this chip MAX3490AEGSA+
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    I'm getting same issue with latest versions in...

    I'm getting same issue with latest versions in Github. The 1.54 Teensyduino release libs are good.

    warning:

    lib/FNET/src/stack//fnet_tcp.c: In function '_fnet_tcp_initial_seq_number_update':...
  31. Solved

    I confirmed that v 1.0.1.0 (couldn't find v1.1.1) fixes the issue. Thank you very much!
  32. @luni, I'm seeing this issue again (had forgotten...

    @luni, I'm seeing this issue again (had forgotten about it, and mentioned it in the Teensyduino 1.54 Released thread). All I have to do is update FNET from 4.6.3 to 4.7.0 (or 4.7.1) to see errors, ...
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    Thanks luni, it looks to be a VisualTeensy or...

    Thanks luni, it looks to be a VisualTeensy or library issue on my end, I'll start a new thread.
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    I upgraded to 1.54 (clean- uninstalled Arduino,...

    I upgraded to 1.54 (clean- uninstalled Arduino, then reinstalled), along with VisualTeensy 1.0.0

    I can compile, but get these multiple definition errors with FNET. I'm using the one in...
  35. OK, you ready for some fun? First thing you...

    OK, you ready for some fun?

    First thing you can try - use your voltmeter, checking ground differentials.

    Connect black lead of your Fluke (I hope you have a decent meter with DC mV readout)...
  36. Do you have a schematic? You have power and...

    Do you have a schematic?

    You have power and ground in loops? I would think a single point, star configuration would be better. Loops have always caused me grief.
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    There have been some updates to NativeEthernet,...

    There have been some updates to NativeEthernet, will these get rolled into the next beta or release?
  38. If you map the pins on a t4.1, you will see it...

    If you map the pins on a t4.1, you will see it can handle 4 motors using hardware quadrature decoding, 11khz is no problem. Use interrupts for tight loop timing.
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    Same chip, so same speed

    Same chip, so same speed
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    Yes, grab yourself a CAN to USB or CAN to SD data...

    Yes, grab yourself a CAN to USB or CAN to SD data logger (tindie might have some) and look at the packets while you turn knobs and stuff.

    For setup, you need to know bit rate (you said close to...
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    Mike, Many Teensy devices have CANBUS support...

    Mike,

    Many Teensy devices have CANBUS support built into the chip, but you still need to add the transceiver. Typically a one of these

    A Teensy 4 and this board would provide the hardware:...
  42. So taking the 2 equations for this TVS:...

    So taking the 2 equations for this TVS: https://www.ti.com/product/ESDS312

    Eq1 Vclamp=5V@1A & Vw = 3.3V, Rs = 1.7ohms

    Eq2 Vmax=57V Rp> 12.98ohms, so a 13ohm is suggested here. This feels better...
  43. As the 4.1 PHY is a TI part, these might be...

    As the 4.1 PHY is a TI part, these might be better than the microchip docs?

    https://www.ti.com/lit/ug/tidues1a/tidues1a.pdf

    Here is an older doc:...
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    I'm certainly interested. Ethernet is a huge win...

    I'm certainly interested. Ethernet is a huge win on the T4.1 The chip actually supports 2 PHYs, would love to see a dual 10/100 teensy 4.2, but NativeEthernet needs some fixes.
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    I donít think USB would work, as it talks to boot...

    I donít think USB would work, as it talks to boot loader. Simplist is connect UART TX board 1 to UART RX of the other and vice versa.
  46. Teensy 4.1 Rework vs pull recommendations

    I have a blown DP83825 (shorted ground to one of the TX/RX pins). That pesky ground pin is hard to get at and takes a ton of heat.

    I have 2 options, replace the chip or replace the T4.1. The T4.1...
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    The Teensy core is already handling the reception...

    The Teensy core is already handling the reception of serial via interrupt and loading into a buffer for you.

    If you wish to do something more than that in the interrupt, you should be able to...
  48. Is it possible to update the secure RTC via NTP...

    Is it possible to update the secure RTC via NTP or download, to today's date and then recall that in future boot ups without a battery connected so all my data logging dates are not Jan 1, 2019?
    ...
  49. Hey, you're welcome. I don't have any examples...

    Hey, you're welcome. I don't have any examples I've tested, but found this, might be a good place for you to start: https://linuxhint.com/send_receive_udp_python/

    I think once you have it working...
  50. Your error is likely because your UDP_IP is...

    Your error is likely because your UDP_IP is wrong, this needs to be the eth0 IP of the Raspberry Pi. Do a ifconfig on pi terminal to get the IP address of the eth0. Post here if you are unsure.
    ...
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