Simulated fire alarm response, with increasing tempo and lowering tone on each repetition

Dependencies:   mbed

Revision:
0:0651c91d96ca
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Jul 31 13:05:58 2020 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file