How to start developping software

To develop code in Linux on the ARM, first of all you will need a makefile.  I started my development using the makefile from lab05 of the embedded linux workshop, search for it on the wiki site.  Then include the Rules.make file, which gives the paths to where everything is located in EZSDK:

# ------ includes -------
# -----------------------
EZSDK := /home/lholeva/ti-ezsdk_dm816x-evm_5_02_01_59
include $(EZSDK)/Rules.make

Setup the paths to the include files and libraries:

CFLAGS := -g -I$(CS_INSTALL_PATH)/libc/usr/include -I$(LLIB_INSTALL_DIR)/include
LINKER_FLAGS := -lpthread -lusb-1.0 -L$(LLIB_INSTALL_DIR)/lib -lstdc++

To do anything with usb you will want to use usblib which is included with EZSDK.  Google for it to get the documentation on the API.  To do 3D graphics I suspect that you will want to use openGL, again google for the documentation.

Lee

Thank you Lee,

I tried what you said, but i have linking problems. I'll be back when they are solved.

Baptiste

Lee,

I still have linking problems, maybe you could help me solving this problem:

Here is an extract of my makefile which is more basic than the one you give me

CFLAGS=-I${EZSDK}/linux-devkit/arm-none-linux-gnueabi/usr/include
LDFLAGS=-lusb -L/home/banc_dt_078/targetfs/usr/lib

I checked that libsusb.so is really present in the directory: /home/banc_dt_078/targetfs/usr/lib/

Note: I use the libusb from the target.

Here is the linking error from the compilation:

/home/banc_dt_078/Desktop/CodeSourceryLite/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.3/../../../../arm-none-linux-gnueabi/bin/ld: cannot find -lusb

Like if ld is not using the directory specified in the makefile !?

Do you know what is wrong in my makefile ?

Thank you,

Bat

Lee,

Thank you it works but not entirely ! i can't link to  libusb.h.

here is the location of the file: /home/banc_dt_078/ti-ezsdk_dm816x-evm_5_02_02_60/linux-devkit/arm-none-linux-gnueabi/usr/include/libusb-1.0/libusb.h

I tried in the CFLAGS: -I$(LLIB_INSTALL_DIR)/include/libusb-1.0 -I$(LLIB_INSTALL_DIR)/include

I tried #include <libusb-1.0/libush.h>  #include <libush.h>

but i still have toto.h:3:20: error: libusb.h: No such file or directory

i google it, and it seems i have the same problem that is described in this link.

Do you have any ideas ?

Bat

Lee,

It works perfectly, thank you again.

It is not needed to add libusb.h. i tried calling function usb_init() or it was libusb_init();

let's try this usb library.

bye,

Bat