add chip.txt for record chip number and function

Signed-off-by: ziyi.wang <jacks808@163.com>
add lcd SMC1602A.pdf

Signed-off-by: ziyi.wang <jacks808@163.com>
modify ProtoThreads1.4 to ProtoThreads1_4 for support arduino IDE

Signed-off-by: ziyi.wang <jacks808@163.com>
Signed-off-by: ziyi.wang <jacks808@163.com>
Signed-off-by: ziyi.wang <jacks808@163.com>
Merge branch 'dev'
Merge branch 'dev-laptops' into dev