Radio fails to init on W5100

[tbowmo]

@tekka

It depends on the module manufacturer. If they use the correct pin for CE, then it's possible. Otherwise the W5100 chip itself hold MISO line low, when the chip is not selected, effectively blocking the spi for other uses

So to keep things safe, I suggest that we keep the soft spi option.

[tbowmo]

@tekka

found this document http://www.i-vis.co.jp/pdf/wiznet/tcpip_chip/w3150a+/W5100_AN_SPI.pdf

Look at page 3 "Multiple SPI Slave Usage". It describes the problem with W5100.

[Anticimex]

Some W5100 boards also have a SPI-enable signal which can be used to turn off drivers from W5100 when the bus is used elsewhere. That is, enable it only when the W5100 is addressed. I used this in my sketch when I had a W5100-based ethernet gw but I don't think all modules offer this possibility.

[tekka]

Yeah, I think it's mainly applicable for the "dual" W5100 shield with SD card adapter.

[ximinez]

Both soft and hard SPI work on my cheap W5100 clone shield (with SD).

[bisschopsr]

All,

Is the content of this topic still valid? All my wiring is according to the intructions (and this topic). I get the following errors:

0;255;3;0;9;Starting gateway (RNNGA-, 2.0.0)
0;255;3;0;9;TSM:INIT
0;255;3;0;9;RF24:write register, reg=0, value=14
0;255;3;0;9;RF24:write register, reg=3, value=3
0;255;3;0;9;RF24:write register, reg=4, value=95
0;255;3;0;9;RF24:write register, reg=5, value=76
0;255;3;0;9;RF24:write register, reg=6, value=39
0;255;3;0;9;RF24:read register, reg=6, value=255
0;255;3;0;9;RF24:read register, reg=5, value=255
0;255;3;0;9;RF24:Sanity check failed: configuration mismatch! Check wiring, replace module or non-P version
0;255;3;0;9;!TSM:RADIO:FAIL
0;255;3;0;9;!TSM:FAILURE
0;255;3;0;9;TSM:PDT
0;255;3;0;9;RF24:write register, reg=0, value=12
0;255;3;0;9;RF24:power down

Note: I did fiddle around with the radio channel settings in myconfig.h, reinstalled the original myconfig.h though.

Thx

Ralph

[tekka]

@bisschopsr looks like a SPI issue (return value 255 hints to that).

edit: Is this referring to the same issue: https://forum.mysensors.org/topic/4662/ethernet-gateway-with-w5100-radio-error-solved/3 ?

[Yveaux]

@ximinez I also use a w5100 shield with SD card and I need to initialize the cs line of the SD card to high in the before() method, so before mysensors start (when using hardware spi) .
Otherwise the SD card will also be selected on the spi bus during startup and radio init will fail.

[bisschopsr]

@tekka: More or less. I wanted to know if the beta that was used in this thread still sticks with the content (does this make sense). It is supportive to my other question with the refered link.

Thx

Ralph

[bisschopsr]

@tekka: In addition: the setup is working now, but not flawless. No radio connection between the node and the GW. But of course this is a different topic.