SD-Card Insert/Remove Handlers

[Tabulous]

Try inserting a 100mS delay before sdcConnect(), it is possible that card needs more time for power up.

Giovanni

Adding a delay will not help, as the card always works the first time you insert it, but if you then remove it and re-insert it, it does not work. BUT! if you once again remove it and re-insert it, it works again........

So to conclude every 1st, 3rd, 5th 7th etc insert it works, every 2nd, 4th 6th 8th insert it fails. This sequence is very repeatable i.e. 100%

[Giovanni]

Try to remove in sdc_lld_connect() the failing test and see if the card works afterwards.

Giovanni

[mukululul]

Hi,
I am seeing a simular problem on the Olimex STM32-E407 with the chibios demo.
First I tried a 256MB Scandisk MicroSD (about 5 Years old) and it never works (works ok in the PC). It always fails in
bool_t sdc_lld_send_cmd_short_crc(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
uint32_t *resp)
in line 534 sdc_lld.c
if ((sta & (SDIO_STA_CTIMEOUT | SDIO_STA_CCRCFAIL)) != 0) {
sdc_lld_collect_errors(sdcp, sta);
return CH_FAILED;


sdcp->errors=0xA

I have another Scandisc SDHC Card with 4GB pretty new which works sometimes. Once it is detected I need to call 3 times "tree" in the shell until I get the directory tree displayed.

Any ideas where the problem is?
To me this sounds like a timing problem, some timeouts might be to thight.

Any help is apprechiated.

Regards
Michael

[Giovanni]

I continue to get those reports of problems but I am unable to reproduce them.

Could you give a try to the SD test application present in ChibiOS 3.0? it is under ./testhal/STM32F4xx/SDC

Giovanni

[mukululul]

Hi Giovanni,
thank you for the fast reply. Where can I get 3.0?
Thx.
Michael

[Giovanni]

Hi,

You need to do a subversion checkout, details are here: http://sourceforge.net/p/chibios/svn/HE ... nel_3_dev/

That test application contains a good test/benchmark for SD cards.

Giovanni

[alex31]

I have another Scandisc SDHC Card with 4GB pretty new which works sometimes. Once it is detected I need to call 3 times "tree" in the shell until I get the directory tree displayed.

Any ideas where the problem is?
To me this sounds like a timing problem, some timeouts might be to thight.

I have resolved problems with some cards working and others not working
by raising SDC_READ_TIMEOUT_MS from 5 to 15 in mcuconf.h.


Alexandre

[mukululul]

Hi Giovanni,
I tried the SD Test and the 256MB SD card does not work there either. This Card is a V1.1 SD and I am not sure if the code this really fully supports it right now.
I ordered a V2.0 SD since from my point of view it does not make sense to support this old stuff and I will continue with this. The other card I had yesterday to try I borrowed from my daughter and I cant use it for further tests because I am scared that data is deleted with the tests.

I'll be back

Regards
Michael

[Giovanni]

Thanks, let me know, I will find some more cards and give it a try again in the weekend.

Giovanni

[mukululul]

Hi Giovanni,
today I tried a cheap card I bought in the supermarket. The test dies in err = f_stat("0:chtest.txt", &filinfo);
with a hardfault. I could not find out yet why, once I leave the func get_fileinfo() in ff.c Line 1908 I am in the hardfault handler.
I modified the main a little bit so I can use USB as a serial connection. Not sure if this can cause the problem.
I also had to remove the costum makefile but I could not see a reason why not.

Is the test running on your setup completely?

Thx
Michael