TODO: Print Error message in HTML.Error LEDs/Codes - blink Built-inĪfter this failed I immediately, took both boards out of the DIN mounts and my codes output is as follows: Serial.println("ERROR - SD card initialization failed!") The output of my program is:Ġ9:55:29.707 -> ERROR - SD card initialization failed!Ġ9:55:30.694 -> ERROR - Can't write to log.csvĠ9:55:30.726 -> ERROR - Can't write to log.csvįor reference my SD initialization code is this: void init_fs(void) Thanks so much If more information would be helpful let me know I tried to be as thorough as possible.Īs you can see every single pin is connect on the Shield. If I am needing to hook up all of these extra wires then does the Ethernet shield really communicate through the ICSP?.Why does the documentation claim that it uses 50,51 and 52 when these are never connected while the shield is nested on the mega?.Does anybody have the ICSP pinout for both of these devices? My best guess is that something isn't lined up correctly on the DIN rail board.What pins am I missing to make this work? Aside from connecting all of them and then slowly eliminating one by one I don't see anything else I'm missing.Again, If I pull the boards out of the DIN rail mounts and stack them together the code runs as expected so it's not a firmware problem it's just a hardware connection but I don't see what I'm missing. Pins 13,12, 11, 10 and 4 connected via the black wires at the bottom but I'm still not able to initialize the SD card when I'm in this configuration. In the picture above, I have the ICSP Header connected via the ribbon cable. So communication is through the ICSP Header. On the Mega, the hardware SS pin, 53, is not used to select either the W5500 or the SD card, but it must be kept as an output or the SPI interface won't work. These pins cannot be used for general I/O. On both boards, pin 10 is used to select the W5500 and pin 4 for the SD card. This is on digital pins 10, 11, 12, and 13 on the Uno and pins 50, 51, and 52 on the Mega. Reading the documentation of the Ethernet Shield 2 I see this:Īrduino communicates with both the W5500 and SD card using the SPI bus (through the ICSP header).
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