And it can distinguish Uppercase and Lowercase filename. I also did some test with Fatfile, I seems work well. The U3 sd card have been on Purchasing Order process. The data transfer is right and I haven't found the issue of bad sectors. I have tried "Netac 8GB class6 micro SDHC" and "Kingston 32GB class 10 microSDHC U1", they both work well. Great, we are international cooperation now! Could you please add my wechat "13764124252", then it is convinient for us to comunicate in Project develoment later? So I concluded that to get high speed, it is recomended to use Sdfile and SPI_FULL_SPEED.Īnd Yuhanj, I see your name looks like a Chinese, and I'm Chinese too. If changing "SdFile file" to "FatFile file", the speed is similar as yours. Then I changed "if( ! sd.begin( CS_SDCARD, SPI_HALF_SPEED ))" to "if( ! sd.begin( CS_SDCARD, SPI_FULL_SPEED )) " in FtpServerur.ino, ![]() Then I changed class4 SD card to class6 SD card and class10 SD card Then I used 2560+w5200, upload speed is 80.16KPBs. First, I used 2560+w5100, upload speed is 7.47KPBs.
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