Hardware XENON SD 3v3 breakout Ethernet FeatherWing XENON and ethernet work - no problems SD card connected to MISO,MOSI,SCLK and D2 as SS. SdFat library used (from Web IDE) and using the sdformatter.ino example from the sdFat library to test. When using card.begin(D2) it fails to find card. Et…

Thanks for you reply - I will try and move the SD to SPI1 and let you know how it works out

[image] shanevanj: I will try and move the SD to SPI1 and let you know how it works out I don't think this is an option either since (for some obscure reason) the Particle Ethernet FeatherWing currently uses non-remappable control pins that interfere with SPI1 (D2..D4) too. [image] G…

Well that seems to be pretty poor planning - that has just blown my 1000 device project right out of the water !!

If you look at the GitHub issue I’ve filed, there already is a response from rickkas7 and avtolstoy is aware of it already too. So chances are that enough demand on that issue may push it up the priority list.

Cool - let me go and add my vote there as well - Thanks !

Thank you @ScruffR for filing this serious issue. I am using an SD Feather (changed CS to A0) along with a Xenon in an Ethernet wing. I keep getting SD read/write errors most likely due to this problem. I would appreciate if you can show me a workaround while this issue gets resolved. Do I use…

Checking CS of the EtherWing is no option as it may happen any time after your check by which time it’ll be too late to counteract. Not sure whether disabling Ethernet would stop all SPI traffic (or attempts thereof) but that may be the best option you currently have. Just leave enough time between…

Thank you @ScruffR . I noticed that the problem occurs even before the statements below in setup() which would indicate that Device OS is doing something before the Ethernet wing is started (possibly to connect to the cloud). STARTUP(System.enableFeature(FEATURE_ETHERNET_DETECTION)); Ethernet.o…

STARTUP() is a macro and its placement doesn’t provide you with any clue about its time of execution. Additionally your code snippet doesn’t seem to make a lot of sense (without seeing the context). On the one hand STARTUP() is a macro that has no business inside a function - on the other hand yo…

XENON SD Card and Ethernet not working

Hardware

Jimmie May 16, 2019, 1:10am 8

I am glad to see more people talk about this. I had commented a few weeks ago that the choice of pins for the Ethernet Featherwing is poor as it also eliminates the ability to use the second serial port of the Xenon.

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XENON SD Card and Ethernet not working

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