Somewhere in history back @mjs513 posted these images of the bare DevBoard I got and scanned associated with the pin names. These are in the DOCS folder of the original github by @defragster that got abandoned when the lib was forked ... not sure...
Ram1's 512KB is as noted any and all code not marked FLASHMEM, and it is also any and all compile time allocated RAM - whether initialized as user vars or allocated otherwise with the remainder as stack.
Just like CODE can sit in flash with...
Nice list @MichaelMeissner - last note - perhaps one of those - was Vaccuum test chamber for heat dissipation?
<edit> - seems maybe it was a heat chamber ... https://forum.pjrc.com/index.php?threads/teensy-4-1-operating-temp.73668/
I vaguely remember some space related posts. I did a google search, but I didn't remember most of these. I suspect they don't meet the criteria of space qualified (but with it in several amateur rockets, maybe it is near space)...
I just released v0.27.0. Here's the Changelog:
## [0.27.0]
### Added
* New `QNETHERNET_FLUSH_AFTER_WRITE` configuration macro for flushing after
every call to `EthernetClient::write()`. This may reduce TCP efficiency.
* Added a W5500 driver...
@manny90:
Without seeing the contents of your sketch, any guesses would be just that: pure guesses. Posting your sketch would at least allow others to take a look, & maybe then, some potential causes might be noticed. Posting your sketch would...
@Rezo - I wired up the T41 for 16bit I/O and did some basic reads and writes. All failed. I hooked up my LA to monitor the first two bits of the high byte and low byte. Was reading 0xff from the status reg which was wrong. It should read 0x50...
If there is a newer one ... not sure I've seen it. Not even sure I saw the update with the 'CARD style' Function color labels on before - nice improvement.
Yes, exactly, a massive difference in raw speed.
In addition to all the points Defragster made, when memory mapped you also gain the (usually) huge benefit of M7's cache.
Good posting - Handy Sketch! I went looking and got distracted ... Used it with the SDRAM DevBoard to confirm the wired and 'extra' pins not connected.
Note for things like this, I end up using sketcth that @defragster and I played with a long while ago:
It sets all of the pins into either INPUT_PULLUP or INPUT_PULLDOWN. You can then take a jumper wire from either GND or 3.3v depending on...
Standard SPI is one bit per cycle of the clock - that runs more slowly.
QSPI is QUAD or four bits per transfer and runs at a faster clock rate.
And in the case of QSPI PSRAM it is memory mapped and as such the chip transfer interface is fully...
I just placed a 1000uF decoupling cap at the 5V Teensy VIN and voilà, the tikitik is gone :)
Long time with this problem, asking is needed sometimes to get clues and organize thoughts.
Seems backwards ... perhaps the processor on the SD card is doing more work after larger writes?
Would something like https://www.sparkfun.com/products/9419 ($12 sniffer) maybe move the CARD away from the Teensy enough to change anything? At...
Well I finally ordered the Buydisplay ER-TFTM101-1 with capacitive touch and had it configured for parallel communication in 8080 mode. Using parts of @Rezo's ILI984x_t41_p library, I was able to adapt my Ra8876LiteTeensy library to use the...
My guess was the WEB refresh was overlapping during/before the same 'inline' request from the PShell request.
Putting the inlineB path in the code seemed to resolve the issue - as each of the two requesters would only send one at a time, so...
Does seem different for sure - But with web refresh it seemed line
I made this change/addition - seems to have stopped a twin message collision? But maybe that is the point of the problem?
server.on("/inline", [](AsyncWebServerRequest *...
A while a go I found these two beautiful old phones in my parents cellar. A wall-mount PTT Model 50 (manufactured 1954) and PTT Model 70 from 1976.
Bothe were very popular Phones in Switzerland.
After have a look inside, they where still in very...
Not an urgent problem at all, no worries. I just repeated myself as we seemed to have perhaps gone a bit OT!
I did take a look at the manual but it doesn't even mention Conversations that I can see, though there do seem to be mechanisms for...
Checking source it responds to : http://192.168.0.89/inline
INLINE - above typed was somehow erroneously copy pasted as Linline :(
Then hitting refresh in browser causes this in the one PShell:
This works as well
Invoke-WebRequest : The server...
And now getting to browser after FedEx delivery:
from : http://192.168.0.89/linline
File Not Found
URI: /linline
Method: GET
Arguments: 0
Doing a RePower restart on Teensy the Power shell's run and the same appears.
Restart again with 2nd...
@SmittyWerben#1 - had to get : https://github.com/khoih-prog/AsyncFSWebServer_Teensy41
must not be as .h is wrong
https://github.com/khoih-prog/Teensy41_AsyncTCP
Opps - it takes BOTH of those ... and a new version of...
Thanks Shawn and Defragster.
OK, I owed this community better. I'm providing a usable sketch, straight from SendChunked.ino (pasted at bottom of this post). It provides two ways to access data:
server.on("/", HTTP_GET...
Speaking as a well-known member in the devboard conversation (or at least one of them) where defragster has included images, I see no such drag+drop option to include images, only the URL field.
Okay confirmed - as a Sr+ drag and drop works for @defragster - mistakenly thought others had dropped too - where @mjs513 and @KurtE are also Sr+ and they may have managed as well on that PM thread.
Doing the SDRAM @Dogbone06 has also been on...
Interesting - perhaps that is something unique to Sr+ - AddOn's not the same as the old forum - perhaps that is one.
@BriComp - I'll add you to PM noted above to see if different?
PM conversation for SDRAM on DevBoard seems to allow drag and drop...
One feature I sort of miss from the old forum, was the ability to see who has read or visited the thread, and then the ability to hover your mouse over a name and see the last time a person visited the thread.
As a side note: not sure of us...
No complete usable sketch provided.
Above shows the QNEthernet by @shawn is being used.- which is good as it is a good library has active support given a reproducible issue.
It also shows Json in use - unknown how or to what degree - but a...
Exactly. I wanted to see it work but not trash anything, so I buffered and restored the affected data - and that worked.
Indeed @Richard H doesn't have that concern wanting just raw data space.
So, nice example code that works!
Yes, that is how it was before edits - once I programmed the right T_4.1 with USB Host and Flash drive connected.
I just added this before to a second buffer to restore later and it did not destroy the drive - but passed the test:
mscError =...
Opps - powered/programmed the wrong T4.1 on power switching Hub
YES, it works on TD 1.59.
Edited the code to READ/Show {all 0's) first sector to second buffer first and restore it after the test write.
This left the drive filesystem usable...
Any chance this was tried with TD 1.59?
Code as above keeps restarting to a CrashReport building IDE 1.8.19 with TD 1.59.
hardware: T_4.1 with a USB drive on USB Host adapter plug
Meanwhiles, for anyones enjoyment, here is a video of a music player demo running on LVGL v9.0.0
I think there is a lot of room left to optimize.
It has two screen sized frame buffers (1.3Mb each) that LVGL writes into, and the eLCDIF reads from...
I made quick note somewhere on past pages with initial speed results showing longer at faster - but not seen with current test.
Another thing the 'OneScanCap.ino' occasionally shows is an added 3 seconds to all times across the tests between one...
Sorry been distracted today for a bunch of reasons. Reran the tests but added the time to copy the array
DMAMEM to EXTMEM: 0 errors, 1010 microseconds to copy
DMAMEM to DMAMEM: 0 errors, 319 microseconds to copy
RAMMEM to RAMMEM: 0 errors...