mix code

Dependencies:   mpu9250_i2c biquadFilter peakdetection Eigen

Revision:
0:44701eab0261
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Wed Nov 06 12:36:55 2019 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#679d24833acf0a0b5b0d528576bb37c70863bc4e