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That was a typo in this post, I edited the correct values. Reducing the PCB for TCP and UDP to 4 (from 8), now gives: -Og -g teensy_size: FLASH: code:1526256, data:81952, headers:8684 free for files:6509572 RAM1*: variables:92192, code:432220, padding:26532 free for local...

Hi shawn, please find the statistics below: NativeEthernet: -Og -g teensy_size: FLASH: code:1487336, data:70688, headers:9176 free for files:6559264 teensy_size: RAM1: variables:79972, code:395372, padding:30612 free for local variables:18332 teensy_size: RAM2: variables:24768 free...

Hi shawn, here is the current output of QNEthernet vs NativeEthernet: nativeethernet: teensy_size: FLASH: code:1487336, data:70688, headers:9176 free for files:6559264 teensy_size: RAM1: variables:79972, code:395372, padding:30612 free for local variables:18332 teensy_size: RAM2...

Hi shawn, I tried your library and it is a very nice drop-in replacement. Very good work and good features. At the moment however, it is too big for my code setup. I definitely have it on my list for later optimizations and to see which library I like more. Best Regards Daniel

Hi Paul, I am working on a private Teensy project (controlling my model rail way, German forum post here) where I sometimes exceed the Teensy 4.1 RAM1 or flash limits (especially with the debug build). To avoid this, I disable some FNET configs in fnet_user_config.h (no TLS + delete mbedtls...

With this, we are down to: With WITH_SSTREAM defined: Memory Usage on Teensy 4.1: FLASH: code:9996, data:3008, headers:8496 free for files:8104964 RAM1: variables:3808, code:7536, padding:25232 free for local variables:487712 RAM2: variables:12416 free for malloc/new:511872 And...

So I made a quick example with Teensyduino 1.59 and compiling for Teensy 4.1: #define WITH_SSTREAM #ifdef WITH_SSTREAM #include <sstream> #else #include <string> #endif const int i = 911; void setup() { Serial.begin(115200); } void loop() { #ifdef WITH_SSTREAM std::string s =...

Thanks @defragster! In that case, I will investigate the include-file-as-variable and declare it to reside in FLASHMEM. Should be the same effect at the end (updated files with each compile) and I have the content directly accessible. Daniel

Hi all, as I have not found anything using google or the forum search, here is my question: can I flash content to the littleFS section of the flash memory during program flashing (I use a Teensy 4.1)? I have stuff in my project I would like to have on the teensy and setting it via the...

Hi @shawn, thanks for the update, I will investigate when I touch that side of the project again. Best Regards Daniel

Hi all, while sorting out my current problems, I am also thinking about new ones. Or at least about cool new features for my projects :cool: Using the Teensy 4.1 on a breadboard made me think of a custom PCB where also the Ethernet connector could be placed directly onto the PCB. As I am not a...

As I said, I removed the #include <sstream> include I used for a custom integer-to-std::string function and replaced it with a manual conversion. The results shared were using only -Og. The strange thing is that the file sstream was included in shrinks from 5744 to 2348 according to...

Thanks for the idea with bringing initialization code also to FLASHMEM. As of now, I do not have large arrays which I can bring there, too. I am now close to 32k of padding and the rest I will find, too. Although I was bit worried that with added functionality, I will soon be in that area...

Hi all, I am coding a little project for my model railway using some own code and some libraries (SPI, SD, NativeEthernet and Websocket). Compiling the project with -Og results in the following teensy_size output: teensy_size*: Memory Usage on Teensy 4.1 teensy_size*: FLASH: code:443968...

Perfect, glad that I could help here. I will have a look here and there for an update :)

Yes, I installed the WebSockets2_Generic and QNEthernet library. This is the include section in my Header file: #define WEBSOCKETS_USE_ETHERNET true #ifdef WINSTON_TEENSY_QNETHERNET #define USE_QN_ETHERNET true #else #define USE_NATIVE_ETHERNET true #endif #include...

Ah, I completely missed the Buffers. Here is an update, also with a bigger MEM_SIZE: Debug with LWIP-MEMSIZE: 1024 instead of 24000 LWIP_STATS: 0 instead of 1 MEMP_NUM_UDP_PCB: 2 instead of 8 MEMP_NUM_TCP_PCB: 2 instead of 8 teensy_size*: Memory Usage on Teensy 4.1 teensy_size*: FLASH...

Hi all, I ran some analysis compiles. The rtti is still enabled as it is something my code relies on. But I think even different -Ox-Flags show some results: Smallest Code: teensy_size*: Memory Usage on Teensy 4.1 teensy_size*: FLASH: code:236484, data:40548, headers:8660 free for...

Good point with the FLASHMEM. I already tried to find the biggest one with arm-size. Lets see what is worth modifying. Additional input from Shawn is highly appreciated, though!

Hi all, first of all, thanks Paul for the Teensy. It is an amazing product with great features. Keep going! And now the issue I currently have: I want to control the signals on my model railway with a Teensy connected to a Roco z21 digital station via Ethernet. There is a simple protocol where...