Cannot initialise SD card

wilko

Hi,
my Duet Wifi, after working flawlessly for months, has developed a problem reading the SD card. This is what it says:

Cannot initialise SD card 0: Card is unusable, try another oneRepRapFirmware for Duet WiFi Version 1.15b dated 2016-08-25
Executing default.g (no configuration file found)...Error, not found
Network disabled.
RepRapFirmware for Duet WiFi is up and running.
Printer is now online.

So far I tried:

re-format supplied SD card. (format in MS-DOS FAT32, then copy the folders 'sys', 'macros', and 'gcode' back onto the card) -> no luck
tried a different card I had lying around. -> no luck

I'm not sure, what I should try next.

Does the sd card has to be formatted with a more obscure file system?
Could it be a problem with the firmware on the Duet?
any other ideas I haven't thought of, yet?

Thanks, Wilko

dc42

Formatting the card as FAT32 is correct. When you run M122, does the report indicate that the card is detected?

wilko

yes, but the interface speed seems odd (see output below).
If I remove the card and run M122 again, it says 'SD card 0 not detected, interface speed: 0.2MBytes/sec'.
If I start the Duet without card and run M122, I get 'SD card 0 not detected, interface speed: 30.0MBytes/sec'.

Diagnostics
Used output buffers: 1 of 32 (2 max)
Platform Diagnostics:
Memory usage:
Program static ram used: 13132
Dynamic ram used: 81780
Recycled dynamic ram: 3392
Current stack ram used: 2752
Maximum stack ram used: 3584
Never used ram: 29184
Last reset 00:00:14 ago, cause: power up
Error status: 0
Bed probe heights: 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Free file entries: 10
SD card 0 detected, interface speed: 0.2MBytes/sec
SD card longest block write time: 0.0ms
MCU temperature: min 24.5, current 26.6, max 27.6
Supply voltage: min 0.4, current 0.6, max 0.9, under voltage events: 0, over voltage events: 0
Slowest main loop (seconds): 0.000512; fastest: 0.000042
Move Diagnostics:
MaxReps: 0, StepErrors: 0\. Underruns: 0
Heat Diagnostics:
Bed heater = 0, chamber heater = -1
GCodes Diagnostics:
Move available? no
Stack pointer: 0 of 5
macro is idle
http is idle
telnet is idle
serial is ready with "M122"
aux is idle
file is idle
Network Diagnostics:
WiFiServer is disabled
SPI underruns 0, overruns 0
Webserver Diagnostics:
HTTP sessions: 0 of 8
ok