Hi, I have Li-5M03 rev 3.1 and BB-xM rev C2.
*root@beagleboard:~# uname -a : * Linux beagleboard 2.6.32 #3 PREEMPT Tue Jul 26 10:56:56 CEST 2011 armv7l unknown I have follow this instructions to install kernel and have a mt9p031 working (http://caganarslan.wordpress.com/2013/07/04/second-post/). I can take snapshot and video with : *mplayer tv:// -tv driver=v4l2:width=1280:height=720:device=/dev/video0:fps=5 -vo jpeg* or *mplayer tv:// -tv driver=v4l2:width=640:height=480:device=/dev/video0:fps=10 -vo x11* And it works perfectly. But i have a problem, i can't read/write in register with i2c-tools. I have tried : *root@beagleboard:~# i2cdetect -r 2* WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-2 using read byte commands. I will probe address range 0x03-0x77. Continue? [Y/n] y 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- Sensor is well detect on 0x48 address. But when i tried to modify gain or exposure, i get : *root@beagleboard:~# echo 22 > /sys/devices/platform/i2c_omap.2/i2c-2/2-0048/gain_val* [ 3638.106781] mt9p031 2-0048: Error setting gain.-121 [ 3638.111511] mt9p031: Global gain write failed *root@beagleboard:~/Desktop# dmesg | grep mt9* [ 3304.832366] mt9p031 2-0048: mt9p031 chip ID 1801 [ 3638.106781] mt9p031 2-0048: Error setting gain.-121 [ 3638.111511] mt9p031: Global gain write failed *root@beagleboard:~/Desktop# i2cget -y 2 0x48 000 w* Error: Could not set address to 0x48: Device or resource busy Any ideas ? Thank you -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
