Hello,
I need a Data Logger in a USB memory stick in my application using MK70. As my project was initialized with Processor Expert in CodeWarrior and I didn't find a reference example with Processor Expert in Freescale USB Baremetal Stack, I tried to copy the files from K70 MSD-FAT example located at "C:\Freescale\Freescale USB Stack v4.1.1\Source \Host\ examples\ msd_mfs_generic\ cw10\ kinetis_k70", except for vectors.c and K70 registers initialization files, since Processor Expert already initializes interrupt vectors and includes "IO_Map.h" file, which defines the addresing and macros of all the registers in the MCU.
After a lot of work, copying all the files and include their respective paths into Compiler Settings, I got some build errors. In the beggining, those errors were due to the lack of some header files. But now, I got some errors that I don't understand the cause:
Maybe somebody can give me an idea of how to do it in a easier way with less work and avoiding these conflicts and errors. Or if I don't find another way, I will have to create a new project based on that demo (without PE) (following the instructions from USBHOSTUG.pdf) and copy what it is already initialized and done with Processor Expert.
Thanks,
Marco Coelho
Hello, Erich
I just tested the "benchmark" application in your FRDM-K20_MSD_Host, but it didn't work. I used in your demo the same USB memory stick with 4GB that I used in Freescale's msd_mfs_generic demo and it worked fine there.
Have a look at the screenshot of the test in Tera Term:
Do you have any idea on what could be causing this issue?
Thanks and best regards,
Marco Coelho
Hello, Erich
Running the same demo for TWR-K60N512, I got a different result:
The "bench.txt" file is created and a lot of "benchmarks" are printed in the file. The "copy.txt" file is also created. But, the copying hangs eternally.
I tested both demos with a 2GB USB memory stick and the same problem ocurrs.
I'm really confused about that.
Hello, Erich
I can't believed! That's really embarrassing! I forgot to mount and shorten J21 jumper on FRDM-K20D50M kit. That connects 5V power to the USB connector.
Well, we can consider it is working now. I only thought strange that some strange messages were printed on the screen. But, "BENCH.txt" and "COPY.txt" files were created and the string "BENCHMARK" was written several times in "BENCH.txt" and this same content copied to "COPY.txt". As you can see bellow, the other messages weren't printed on the Terminal, but it works! More tests will be necessary to prove it really is 100% functional for our application and hardware here.
As a second test, I changed the string "BENCHMARK" to "BANANA" and ran again. It worked fine, other files with the same names were created in the USB memory stick and over-rode the old ones with the new content, as expected. See the screenshots bellow:
What we need now is turning this into a baremetal demo to add it to our project in which other peripherals were also intialized and handled by Processor Expert. I think a good way to do it is refering to your "TWR-K60N512_FatFS_BM" demo present at "...\ mcuoneclipse-master\Examples\TRW-K60N512".
Thank you very much, Erich!
Best regards,
Marco Coelho
