SPI Issues

[NeelMani3]

First of all, thanks for the library. It is very handy and useful. I am trying to connect SCL3300-D01-PCB to arduino uno through a bidirectional logic converter. Also using a pull up resistor for chip select - 4.7K. DVIO pin is at +3.3 Volts. I have checked all the connections but still I am not getting the communication established. I have provided the serial outputs with debug.

I have also added more serial prints in the code (below output) and still not able to figure out the issue.

14:33:39.307 -> Reading basic Tilt Level Offset values from SCL3300 Inclinometer 14:33:39.384 -> FC000073 Inside transfer I FC 0 0 73 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:39.502 -> B4002098 Inside transfer I B4 0 20 98 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:39.618 -> B4000338 Inside transfer I B4 0 3 38 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:39.739 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:39.868 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:39.989 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:40.101 -> B0001F6F Inside transfer I B0 0 1F 6F In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:40.244 -> 40000091 Inside transfer I 40 0 0 91 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:40.358 -> 40000091 Inside transfer I 40 0 0 91 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:40.484 -> B4000338 Inside transfer I B4 0 3 38 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:40.605 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:40.725 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:40.841 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:40.968 -> B0001F6F Inside transfer I B0 0 1F 6F In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:41.085 -> 40000091 Inside transfer I 40 0 0 91 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:41.202 -> 40000091 Inside transfer I 40 0 0 91 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:41.320 -> getErrFlag1 14:33:41.320 -> FC000073 Inside transfer I FC 0 0 73 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:41.447 -> 1C0000E3 Inside transfer I 1C 0 0 E3 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:41.600 -> 1C0000E3 Inside transfer I 1C 0 0 E3 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:41.712 -> 65535 14:33:41.712 -> getErrFlag2 14:33:41.712 -> FC000073 Inside transfer I FC 0 0 73 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:41.838 -> 200000C1 Inside transfer I 20 0 0 C1 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:41.960 -> 200000C1 Inside transfer I 20 0 0 C1 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 14:33:42.092 -> 65535 14:33:42.092 -> Murata SCL3300 inclinometer not connected.

[NeelMani3]

Just wanted to add that I also did try the loopback test (that has been suggested for the other connectivity issue).

When I loop back the CRC errors go off 18:12:00.841 -> Reading basic Tilt Level Offset values from SCL3300 Inclinometer 18:12:00.925 -> FC000073 Inside transfer I FC 0 0 73 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 18:12:01.040 -> B4002098 Inside transfer I B4 0 20 98 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 18:12:01.174 -> B4000338 Inside transfer I B4 0 3 38 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 3 38 38 0 18:12:01.289 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 0 E5 E5 0 18:12:01.396 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 0 E5 E5 0 18:12:01.506 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 0 E5 E5 0 18:12:01.622 -> B0001F6F Inside transfer I B0 0 1F 6F In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 1F 6F 6F 0 18:12:01.740 -> 40000091 Inside transfer I 40 0 0 91 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 0 91 91 0 18:12:01.856 -> 40000091 Inside transfer I 40 0 0 91 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 0 91 91 0

but when I am connecting to the inclinometer normally without the loopback I am getting the FF errors...

[DavidArmstrong]

The outputs you have shared point to some sort of connection issue. I've run into a similar issue when I'm using a breadboard with the scl3300, and some of the wires end up having a problem. So I'd recommend double checking there first. (The wires can look right, but any corrosion will cause this problem. )

Dave

On Mon, Oct 19, 2020, 5:58 AM NeelMani3 notifications@github.com wrote:

Just wanted to add that I also did try the loopback test (that has been suggested for the other connectivity issue).

When I loop back the CRC errors go off 18:12:00.841 -> Reading basic Tilt Level Offset values from SCL3300 Inclinometer 18:12:00.925 -> FC000073 Inside transfer I FC 0 0 73 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 18:12:01.040 -> B4002098 Inside transfer I B4 0 20 98 In CRC TrueIn RS True Inside transfer II Status err1 CRC err1 3 FFFF FF 7A 1 18:12:01.174 -> B4000338 Inside transfer I B4 0 3 38 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 3 38 38 0 18:12:01.289 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 0 E5 E5 0 18:12:01.396 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 0 E5 E5 0 18:12:01.506 -> 180000E5 Inside transfer I 18 0 0 E5 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 0 E5 E5 0 18:12:01.622 -> B0001F6F Inside transfer I B0 0 1F 6F In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 1F 6F 6F 0 18:12:01.740 -> 40000091 Inside transfer I 40 0 0 91 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 0 91 91 0 18:12:01.856 -> 40000091 Inside transfer I 40 0 0 91 In CRC FalseIn RS True Inside transfer II Status err1 CRC err0 0 0 91 91 0

but when I am connecting to the inclinometer normally without the loopback I am getting the FF errors...

[image: image] https://user-images.githubusercontent.com/12881070/96453852-afb0cc00-1238-11eb-8875-10eef6b79bc9.png

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[NeelMani3]

Thanks. I tried reconnecting and checked all the wire connectivity with multimeter between uno - bidirectional converter - Inclinometer - all board to board instead of the wires. Changed couple of wires as well. Still facing the same issue. Is there any way that the Inclinometer inherently is having some component issue? Is there any way to check that?

[DavidArmstrong]

There is always the possibility of a hardware issue with the scl3300 itself. Another check that could be done is to look at the three SPI line with an oscilloscope, and see what wave forms they show.

Dave

On Mon, Oct 19, 2020, 9:33 AM NeelMani3 notifications@github.com wrote:

Thanks. I tried reconnecting and checked all the wire connectivity with multimeter between uno - bidirectional converter - Inclinometer - all board to board instead of the wires. Changed couple of wires as well. Still facing the same issue. Is there any way that the Inclinometer inherently is having some component issue? Is there any way to check that?

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[NeelMani3]

Thanks for your suggestion. I reconnected the circuit in a new board with nano and removed the pull up resistor on chip select. It worked fine without the errors. Thanks for your help.

[DavidArmstrong]

Issue reported as resolved, so closing.