Multiple thread example based on mbed-os

Fork of rtos_basic by mbed official

This is a very basic of RTOS thread example using mbed-os. In this example, LED1 and LED2 are toggling with the interval of 500ms and 1000ms respectively. LED1 blinking is running in the while in main, meantime LED2 blinking is running in a thread. This shows how task(s) can operate independently.

Revision:
8:c1e1db61aee7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Thu Jan 12 22:58:45 2017 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#2885c1b41e63158cb6faf5f107cd821ae06ef26c