Missing documentation for i.MX53's i2c tests within the /unit_tests/ suite

JeremyWhitaker · ‎06-26-2012

Hello, I'm new to the iMX community, and this is my first time posting a problem that has come up in my testing, so please bear with me. Recently I've been trying to run a few tests on the imx53 board, which is connected to my computer through a serial connection (an NFS setup). I've been trying to run the i2c unit tests in the /unit_tests folder, but so far all of the tests have failed. In the package list selection in ltib setup, I've enabled the "imx-test" package as well as the "i2c-tools" package, and to my understanding I should be able to go into the /unit_tests directory, after logging into the imx53 board, and enter commands like "./mxc_i2c_test.out" or "./mxc_i2c_test_usb.out" and then get an output that looks something like:

Test: I2C!
Slave address=2d
Write Data=20 to reg=6
Write Data=4 to reg=4
Write Data=4 to reg=13
Write Data=2 to reg=12
Data read=2c from reg=6
Data read=4 from reg=4
Data read=2 from reg=13
I2C TEST PASSED

As of right now, though, when I go into the /unit_tests directory and type in "./mxc_i2c_test_usb.out" I get:

Test: I2C!
Open failed

I should also point out that I have a usb webcam plugged into the board, which is registered as /dev/video0 and that some i2c commands are actually working. I’m able to type in commands like “i2cdetect 0” or “i2cdump 0 0x1c” and get the expected response.

Also, according to the mx27_linux.pdf, entitled "Linux BSP for theFreescale i.MX27ADS", there is a kernel test module binary titled "mxc_i2c_test.ko" which I may need to install. I don't know whether or not this is already taken care of, though, since I already have the test files in the /unit_tests directory.

Basically, I'm pretty unsure of how to go about running the i2c tests on the imx53 board or if I even have the correct setup needed in order to run the tests. If anyone knows of any walk-throughs on how to run the mxc_i2c* tests or can give me a few step-by-step instructions, I'd greatly appreciate it.