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That is in the spot of code noted in p#14.

Those "#if defined(ARDUINO_TEENSY41) " in "static void enableGPIO(bool enable) {" would preclude that from working on Teensy 4.0 with SDIO soldered on...

Closest is the below in : ...\hardware\teensy\avr\libraries\SdFat\src\SdCard\SdioTeensy.cpp


#elif defined(__IMXRT1062__)...

Not finding : SDHC_ReleaseGPIO()

In TD 1.54 sources here?

Edited the code to work with TD 1.54 b5:


#include <SD.h>
#include <SPI.h>

//...

Also note - there have been posts like "tried Paul's PSRAM test and it passed" - but then other usage fails until solder joints are reflowed or cleaned.

Noted as: "large file named TESTFILE.BIN" -...

Have not seen this noted as done or tried or done it here.

The TeensyDuino 1.54 Beta 5 has integrated a release version ( not Beta ) of the Greiman SdFat to replace the standard SD library.

Not...

The T_4.1 uses 480 Mbps USB. As presented (if I read right) by @KD5RXT-mark there is less disturbance and rerouting of the USB 'D' signal lines where it seems they are uninterrupted from the original...

That's great. When the version to release is assembled I'll look to get back and test it out when the code to be included is known and in one place.

Having the 1062 bootloader chip ready for the...

Anything that provides simple info logging would be cool. As noted your On_Restart T_4 display is an awesome extension for HardFaults.

That's where I got bogged down - tying to add generic debug...

Things like that seem like a good addition to take the mystery out of a Teensy that 'just stops' - it doesn't generally happen - but when such things do happen it is an opaque puzzle.

And future...

Forum search on "SCB_AIRCR" will find it liberally noted back to T_3.0 days IIRC - one might have comforting details - again IIRC from reading it is the common ARM way to do it.

For an advanced view of 1062's DMA and GPIO see : (arduino)\hardware\teensy\avr\libraries\OctoWS2811\OctoWS2811_imxrt.cpp

There are some other comments - but this is the biggest one:

//...

Nice work! >> and colon >> characters: ":/0123456789" and space.

Updated Post #1 -

PJRC/Paul has indicated it is NOT planning to produce a public WIKI.

There is a GROWING USER WIKI :: TeensyUser/doc/wiki
> please look and participate there.

@Paul - possible to add a note for NativeEthernet on the T_4.1 hardware page? The hardware is discussed - but no link to the library to use for support ... recent user post made note of that ...

Here is that library thread :: T4-1-Ethernet-Library

There is a software reset function FrankB just noted in this post:

That need to send the 'address array' is where the Teensy's MAC will be written when the code shown above is executed. 'just supply' means allocate the needed 6 byte variable and pass to the...

That is impressive and clean, nice looking hand work on the panel cover graphic!

There is overhead with the tests and I/O write/read, mask shift and test - I should have looked more at the code before guessing speed. Also it isn't using FAST versions ( given the pin isn't CONST...

I had not seen that before - interesting - it might clock near or above 60 MHz for each byte?

Did not look at the data sheet either to see how fast it can cycle - or the daisy chain setup -...

That code is 2013 and looks like it refers to bit banging the exchange in the second code snippet? If it can work manually and not using the SPI engine for the transfer then the bit bang code is in...

Okay, I had just glanced at the comments on the pin #'s (and saw i2s comments) before posting - then the 'red notes' on the FLEXIO mux set. So potential issue is not because the are mux'able to...

Just to make sure at a glance what that is showing - the issue is using those pins 35,36,37 is in conflict because they have FLEXIO2 conflict with QSPI usage?

TD 1.54 Beta 6 will be out in some days and will have some stable version of LittleFS included - maybe by the time the chip arrives. That will have all the setup and operation commands needed to...

No, PSRAM is not needed to add FLASH. They are independent and either or both can be used.

Hopefully the comments in this code snippet point to a chip that has been tested and used that can be...

That looks to be the needed change in what looks to be the correct file.

Unless there are multiple copies of TeensyDuino installed and the edit was not made in the location used? Or for some...

There is this library that allows working with the On/Off :: github.com/FrankBoesing/T4_PowerButton

The examples show usage - it was recently updated to catch and show FAULTS as well.

Good work @mjs513 - I typed on github asking about that ... but never hit post I saw today ... too many distractions ...

Wish I had known about the 2Gb NAND digikey had with last order so I don't...

Indeed maybe not ... I think you'd have to hook the warn callback and make a note of that in the static RAM. Then if it went OVERTEMP and restarted - not sure if that is a reported FAULT? If it is...

Pretty sure Panel mount for the ethernet was not considered. It was just a desktop test proof of concept/function that works in that situation.

No those boards don't offer any good mounting...

As long as there is a clean and easy way to include or enable it it sells itself - having a lib in the CORES would be awesome to just add #include 'something'. As noted I started working on it in...

As noted in p#23 - if I'm reading the 'picture' right and the notes about no active components: I don't see that as an option - to use the ribbon without a magjack - or cabling punchdown wires direct...

Interesting - well it is an otherwise empty function - may it gets optimized away :) ???

Could do a normal non-debug build and add a static var and use a stack var to get it and change it in some...

Interesting that is failing to trigger on code over filling the stack? It is a 32 Byte(?) region? Maybe the recursive code isn't reading|writing to it to trigger but just stepping over it?

Have...

@KurtE - just came back here to read the posting below - wonder if this is what is bugging the T_4.x remote memory PCB? The solder is there but 'iffy'?



Odd the icon hover 'text' says "Thumbs...

<edit>: I agree this should be provided in the core with a way to activate it for display on boot. Working on this in prior Beta's (with debug_tt) it seemed like it would be useful - but there were...

Based on only the included image - that looks like just a way to panel mount a connector to take signals to a punch down block - or like a wall socket fixture - an alternative to in wall wiring -...

Quite welcome. The comments in bold are not in the code - added for help with clarification - easier to read than 700 preceding posts as it all developed.

Look at the LFSintegrity sketch - it has #ifdef for all the known MEDIA types:


//#define TEST_RAM // can be PSRAM or smaller in processor RAM1 or RAM2
//#define TEST_SPI // this is Propshield...

Internal temp can rise and fall quick at times esp with OC - but stable runs can take some time to heat the whole PCB metal sandwich - and anything soldered or attached.

Wondering about junction...

Paul's github has benchmark repository for T_4.0 test does as posted on the product page at 600 MHz - ( they may e linked there as well? ) - you could download the sketches and run them - coremark...

Use "wfi" with testing care - unlike the T_3.x's - there are no regular waking interrupts - so it can sleep until one comes along. The normal systick interrupt doesn't trigger to WAKE like on the...

Not sure where WDT_timings_t comde from - not a library included in TeensyDuino?

More info needed on libraries and code in use - and version of TeensyDuino ...more complete code so a viewer could...

Moving air is better - but a tape on heat sink is good for a couple of degrees - and both in combo best. More pins and soldered/plugged to something adds more ways to take heat out like moving air...

This post : Teensy-4-1-binary-from-alternate-toolchain
Indicates it shows the fuses and that boot from serial is disabled.

Interesting to know the Serial is disabled - so even seeing the NXP bootloader appear won't allow access - that was a subject on another of these redundant threads.

The Fuses are dangerous - and...

Well timed edges are critical - you only get one chance to read both sensors per 'trial'. An error if one sensor triggers without the other - and once both triggers those two points are the only...

LittleFS is NEW to TD 1.54 in beta as noted in p#771. Not sure if it works on TD 1.53 with the addition of the library also noted in p#771 or the current code on PJRC under LittleFS it is copied...

The above Hackaday leads to an open source for Arduino port reading - GPL license - and it just sits in a while( !Sensor #1 ) then goes to While( !Sensor #2 ) for timing. As noted that uses trap on...