Xilinx linux使用

emmc文件系统扩容

root@mwm:~# df -T
Filesystem           Type       1K-blocks      Used Available Use% Mounted on
devtmpfs             devtmpfs     1891484         4   1891480   0% /dev
tmpfs                tmpfs        2025672        72   2025600   0% /run
tmpfs                tmpfs        2025672        60   2025612   0% /var/volatile
/dev/mmcblk0         ext4          122835     59447     54214  52% /run/media/mmcblk0
root@mwm:~# resize2fs /dev/mmcblk0 
resize2fs 1.43 (17-May-2016)
Filesystem at /dev/mmcblk0 is mounted on /run/media/mmcblk0; on-l[  679.287027] EXT4-fs (mmcblk0): resizing filesystem from 131072 to 15558144 blocks
ine resizing required
old_desc_blocks = 1, new_desc_blocks = 60
[  679.327243] random: crng init done
[  679.620904] EXT4-fs (mmcblk0): resized filesystem to 15558144
The filesystem on /dev/mmcblk0 is now 15558144 (1k) blocks long.

root@mwm:~# df -T
Filesystem           Type       1K-blocks      Used Available Use% Mounted on
devtmpfs             devtmpfs     1891484         4   1891480   0% /dev
tmpfs                tmpfs        2025672        72   2025600   0% /run
tmpfs                tmpfs        2025672        60   2025612   0% /var/volatile
/dev/mmcblk0         ext4        15062932     60866  14375913   0% /run/media/mmcblk0

i2c

i2c控制器列表：i2cdetect -l
扫描总线上的设备：i2cdetect -y -r 1（总线号为1）
读寄存器：i2cget -y 1 0x58 6（读总线号1，地址0x58，地址0x6寄存器）