GNU/Linux - U-Boot中的i2c命令

u-boot=> i2c

i2c - I2C sub-system

Usage:

i2c bus [muxtype:muxaddr:muxchannel] - show I2C bus info

i2c crc32 chip address[.0, .1, .2] count - compute CRC32 checksum

i2c dev [dev] - show or set current I2C bus

i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device

i2c md chip address[.0, .1, .2] [# of objects] - read from I2C device

i2c mm chip address[.0, .1, .2] - write to I2C device (auto-incrementing)

i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)

i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)

i2c probe [address] - test for and show device(s) on the I2C bus

i2c read chip address[.0, .1, .2] length memaddress - read to memory

i2c write memaddress chip address[.0, .1, .2] length [-s] - write memory

          to I2C; the -s option selects bulk write in a single transaction