compile the w600 at firmware.
Step 0: Compile and Download
wch@wch-pc /cygdrive/d/Project/sdk/example
$ ./build.sh at flash COM3
start...
Step 1 : UART0 Printf
Shenzhen ThingsTurn Technology Co., Ltd.
ready
Then you can send AT+E and AT+QVER=? like this :
+OK
AT+QVER=?
+OK=H1.00.00.0000,G3.02.00@ 11:20:45 Mar 18 2019
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