SD info and benchmarks (was Re: EOS M3 porting)

  • 23 Replies
  • 740 Views
*

Offline srsa_4c

  • ******
  • 3363
Re: SD info and benchmarks (was Re: EOS M3 porting)
« Reply #20 on: 14 / April / 2017, 08:36:33 »
Advertisements
@reyalp
Thanks for sharing the results.

I have added logging for the low level SD card routines on the M10 where they are in RAM (to get debug messages for regular operation and errors). This is what I got (from camera start, omitting later card activity):
Code: [Select]
SetSSCG(12,0)s
HWInit(0)s
SWInit(0)s
SetUHSMod(0,1)s
RegPowCF(0)s
CardInit(0)s
GetCrdTyp(0)s
GetCmnReg(0)s
SdGetReg(0)s
GetRUS(0)s
GetSpd(0)s
GetTtlSect(0)s
CrdRd(0,0x5d757e00,0x6acf4c,0x0,-1)s
GetTtlSect(0)s
GetTtlSect(0)s
CrdRd(0,0x5d757e00,0x6acf4c,0x0,-1)s
GetTtlSect(0)s
IsIntWP(0)s
GetTtlSect(0)s
CrdRd(0,0x421bcb00,0x6ace4c,0x0,-1)s
GetTtlSect(0)s
GetAUS(0)s
GetTtlSect(0)s
CrdRd(0,0x421bcd00,0x6ace54,0x0,-1)s
The last 3 values in CrdRd rows may be wrong, but doesn't matter. CardInit seems to be the place where the card is set up.
I'd like to note that there aren't any error messages in the log, so the UHS card is handled silently as non-UHS.


*

Online Ant

  • ***
  • 232
Re: SD info and benchmarks (was Re: EOS M3 porting)
« Reply #22 on: 20 / April / 2017, 17:56:41 »
The same log from EOS M3.

But it's interesting to view log made with reyalp's "1.8V Support" card.

Re: SD info and benchmarks (was Re: EOS M3 porting)
« Reply #23 on: Today at 11:50:46 »
I made 20 serial images in RAW on my M3. All measurements with MF and exposure times <1 / 640s. Here is the distance of the first 4 images 0.3s. Then the distance settles to approx to 1,5s. The RAW pictures are about 33MB, so I come to an average writing speed of 20MB/s. Nearly the same as which gives me CHDK measurement.
The times I have from the timestamp of RAW data which has resolution of 1 / 100s.