I am asking this for a customer.
I do not have a LPC1837 Xplorer board to run the demo's on.
Customer asking the following:
Can you tell me the data rate you can run with you eval board (LPC1837 explorer) on this port to download/upload a file from the USB to the SD card?
I'm sure the performance is dependent on the SD Card type so please let me know what type you use for testing.
When I visit the OM13061 Product page and click Buy....it does not list the LPC1837 Xplorer board. Is it EOL'ed or just a web page issue?
I did find Mouser has board for $100 and pointed customer to that site.
Regards,
David
NXP FAE
LPCXplorer boards are not (longer) in our store, but can be bought from NGX or other suppliers like Mouser.
The write performance depends of course on the SD card performance but also on the way you implemented this in software. The USB throughput as well as the speed on the SDIO interface is for sure not the best one in our examples which you find for the Xplorer or other board. There are subcontractors who have this knowledge and they could be involved if it comes to throughput as a key product requirement.
We might find benchmarks for USB and SDIO throughput based on tests we did, but we would not be able to deliver example code to a customer.
From our side there is no focus at the moment on this setup, it depends on the importance of the project/customer how far we would engage.
There is an LPC18S37 board available (OM13076), the 'S'-feature of this chip mustn't be used. On this board you can add an OM13082 general purpose shield which has an SD card slot.
But most likely the example which is available for the Xplorer board does not run in the first step on this setup.
Regards,
Bernhard.