Adding definition for LSM6DS3TR-C

Adding import for LSM6DS3TR-C to use with LSM6DS3TR-C + LIS3MDL 9-DoF

Author: BlitzCityDIY

examples/lis3mdl_lsm6ds_test.py

@@ -13,6 +13,10 @@
 # and uncomment the next line
 # from adafruit_lsm6ds.lsm330dhcx import ISM330DHCX as LSM6DS
 
+# To use LSM6DS3TR-C, comment out the LSM6DSOX import line
+# and uncomment the next line
+# from adafruit_lsm6ds.lsm6ds3 import LSM6DS3 as LSM6DS
+
 from adafruit_lis3mdl import LIS3MDL
 
 i2c = board.I2C()  # uses board.SCL and board.SDA