bschena
Member

Thanks Paul, I'll look into that CANbus analyzer....that would probably explain a *lot*. EDIT: It's on it's way!

10-4. thx.

thanks tonton81. quick question, where is the right place to call setClock()? will this sequence work, or should I be calling setClock() before begin() - or someplace else? can1.begin(); ...

Right, makes sense. I just sent an email to the motor vendor asking about the maximum rate I can send updates to it. Is there an expected (or tested) speed limit of FlexCAN before Bad Things start to happen, like...

Interesting. I added a progressively shorter delay in between the sends and I can see it starting to choke: void loop() { int delayTime = 100; Serial.println("\n========================"); ...

Yes, bus is terminated at both ends with 120ohms. Example code for the status requests (all 3 functions are essentially identical except for the hex code that is passed) //...

Thanks tonton1, great answers as usual. I just looked at your "CAN2.0_example_FIFO_with_interrupts" and made a simple version of my code to see what happens with that scheme. The short version is that I'm still...

Thanks tonton81. I added the resistor and 1Mbits/sec works now. Thanks for the setClock() tip - I'll play with that if I run into reliability issues with the faster setting. can1.setBaudRate(1000000); // start...

Ha, yes, I had some late-night-cognitive-dissonance when I wrote that. Of course, kbps, not MHz. Glad you understood what I meant, not what I said. My loopback test code: /* * Loopback test: CAN1 connected to...

Hmm. I tried toggling the RST line with this, // reset to avoid wrong color startup digitalWrite(TFT_RST, LOW); delay( 500 ); digitalWrite(TFT_RST, HIGH); // general init

Thanks Kurte. setup code: void tft_setup(void) { // set up general TFT parameters that won't change // general init tft.init(240, 240); tft.setRotation(3); tft.setTextWrap(false);

Thanks for the great explanation. I'll give it a go!

I googled around but haven't found any examples for how to use setRowColStart(). I tried this, it compiles, but has no effect. void tft_update_datum( long rate ) { tft.fillScreen( backgroundColor ); ...

ah-ha! datum. I saw mention of that but thought it had to do with scrolling text (way beyond my pay grade). is there a way to ARBITRARILY define the datum, or do I have to use one of the 9 pre-defined ones listed...

Got it, thanks. This is my first rodeo with CAN. Oh, and I'm at the "now what?" stage - I've got the T4.1 hooked up to a Waveshare SN65HVD230 CAN transceiver board. Does anyone have any suggestions on what library to...

Wow, really? That's not normal, but glad I bothered to ask!

OH! that's exciting as hell! I'm going to have to look at how to use MAC addressing - I've just been doing the usual IP:Port thing. Very cool! Thanks for taking the time to look into that!

oh, that's interesting. I've looked briefly at FNET - it did seem more complex than your nice NativeEthernet package, but you are right, getting closer to the iron might make sense for me. Being able to talk directly to...

Excellent, thanks Manitou. That gives me a head start. The good news is that all of my nodes will be on an airgapped network dedicated for the application, so all of then network BW is for that traffic only. But,...

Thanks for the clarification. I'm still trying to sort Multicast from Broadcast myself. I believe that Multicast is more sophisticated than Broadcast. Multicast is sort of publish/subscribe whereas Broadcast is just...

This is helpful - curious to see how other people have solved a similar problem.

Good question - not sure what's happening at the wire level. All I know is that if I don't add the delay, nothing arrives on the receive end. Seems like I'll need to get Wireshark running to find out. In my...

Awesome Mark, thank you! uTasker looks like an interesting project, I'll check out the links and info you mentioned. Cheers! /b/

Understood. Thanks!

Any chance you would be willing to share the code you used to scrape the eFUSE registers from T4.1?

Just getting going with NativeEthernet on T41. So far I seem to be figuring it out....if slowly. Here's a hopefully easy question related to Ethernet.begin() calls: If I use this (passing mac only), everything is...

I'm right there with you. I'm still trying to figure out which Ethernet library is the right one. Looks like a lot of documentation hasn't yet caught up to the 4.1 release. Which library are you using? Got it working...