I2S speed test wip

Dependencies:   mbed

Revision:
2:8008da2bb047
Parent:
0:b847a1ffc64f
diff -r 3c1ad60f5cf3 -r 8008da2bb047 mbed.bld
--- a/mbed.bld	Sat Apr 25 18:55:54 2020 +0000
+++ b/mbed.bld	Sat Apr 25 23:21:07 2020 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed/builds/04dd9b1680ae
\ No newline at end of file
+https://os.mbed.com/users/mbed_official/code/mbed/builds/7130f322cb7e
\ No newline at end of file