I've Just purchased a UART USB Flash Disk W/R Controller from Sure Electronics on ebay. This is a great little device that does all the interfacing to either an SD disk or USB disk depending on which version you buy. I've tested it on a 8Gb microSD in a USB adapter.
The RS232 command interface is slightly quirky but very easy to use (DOS like). To write a log file "FOPEN file.nam", then "FWRITE" to start logging, everything then sent is logged to the file until you send the STOPFLAG which by default is "+++++"
Then you need to close the file with FCLOSE
The device supports FAT16 or FAT32 and the files are then easy to read on a PC. I'm formatting them as .CSV so they can be read directly in excel
Hope this is of use
Best Regards
Peter
The RS232 command interface is slightly quirky but very easy to use (DOS like). To write a log file "FOPEN file.nam", then "FWRITE" to start logging, everything then sent is logged to the file until you send the STOPFLAG which by default is "+++++"
Then you need to close the file with FCLOSE
The device supports FAT16 or FAT32 and the files are then easy to read on a PC. I'm formatting them as .CSV so they can be read directly in excel
Hope this is of use
Best Regards
Peter