Example code for modbus serial

Dependencies:   mbed

Revision:
0:f306cb0263a6
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Mar 14 06:17:48 2018 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/aa5281ff4a02
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