dujuncheng/crrc: 中车项目，与pis系统的通信 @ 0804c5c41e40273e5fe641c37407c067c2d2eaaa

dujunchen 0804c5c41e add send recording file to stc		2 月之前
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app	0804c5c41e add send recording file to stc	2 月之前
pkg	27d3dbdd76 add api for alarm status ;	3 月之前