add doc for 24lcxx
Merge branch 'master' of https://github.com/coocox/cox
Seven_Segment driver
Merge branch 'master' of https://github.com/coocox/cox
Merge remote-tracking branch 'remotes/zc/master'
change description
add 24LC64 driver
add PCF8591 Driver
add MAX7219 driver
add ch376 driver
add accelerometer MMA7455 driver
delete system pictures
add doc for sensor shield ,motor shield and LCDShield
add ht24cxx driver
delete pause cmd in doxygen.bat
add I2C LCD1602 drv
add the embedded pi board
uc1701 Driver
Merge branch 'master' of https://github.com/coocox/cox
embeddedpi shield example