Posted on May 17, 2011 at 09:39I'm actually working in a port for EFSL (http://efsl.be) now though I'm having trouble with the STR9's SSP. The port is actually pretty straight forward as the documentation does a good job of telling you how to do it. So far all I've needed to do is:
1) Add my new end point to interface.h by adding:
#elif defined(HW_ENDPOINT_STR91X)
#include ''interfaces/str91x_spi.h''
2) Add a str91x_spi.c file to the src/interfaces folder that defines the functions that send the SPI data.
3) Add a header file called str91x_spi.h to the inc/interfaces folder. I pretty much copied the lpc200_spi.h header file.
4) Copy one of the sample config files in the conf folder, add it to your project, and changed a few definitions. I used the LPC2000 sample.
In str91x_spi.c, I included interfaces/sd.h which does most of the work for you. Just define the if_initInterface(...) that sets up the SSP, and copy the if_readBuf(...), if_writeBuf(...), and if_setPos(...) functions out of lpc2000_spi.c. Then just define if_spiSend(...) that puts and gets one byte of data and your done.
I'm having a bit of trouble reading back data from the SSP (it's reading what I send out and the loopback is off) but the card looks like it's responding properly on the scope.
Once I get past my problems with the SSP I'll test out EFSL and let you know how it works.
