topic JPEG file over USB in LPC Microcontrollers

JPEG file over USB

lpcware — Wed, 15 Jun 2016 18:45:56 GMT

Content originally posted in LPCWare by Ahmed13 on Thu Jul 03 01:03:08 MST 2014
Hello everyone,

I'm using a LPC43xx, and I want to send pictures from the SD card to the PC over USB.

I'm able to read and send data from the SD card to the PC (using f_open and f_read like in the example LPCopen sdmmc and using the WriteEP function to send the data over bulk IN USB)

On host side I have an app that is using external JPG library and re-assembling the data to make it a jpg file.
(For the moment I'm sending a PNG file from the SD card, sending only the data avoiding the headers).

The thing is I'm not able to re build a correct image, is there any function dealing with jpg for LPC ?
If anyone have already deal with this subject feel free to answer.

thank you very much,

Regards, Ahmed.

Re: JPEG file over USB

lpcware — Wed, 15 Jun 2016 18:45:57 GMT

Content originally posted in LPCWare by rocketdawg on Thu Jul 03 11:50:09 MST 2014
probably an endian issue

Re: JPEG file over USB

lpcware — Wed, 15 Jun 2016 18:45:57 GMT

Content originally posted in LPCWare by embd02161991 on Thu Jul 03 16:24:45 MST 2014
hi,

Have you tried the USB Mass storage class example ?

http://www.lpcware.com/content/nxpfile/lpcopen-software-development-platform-lpc43xx-packages

Thanks,

NXP Technical Support