Connecting ...
 - Connecting via USB to J-Link device 0
 - J-Link firmware: J-Link Lite-Cortex-M V8 compiled Sep 15 2016 12:05:01
 - Device "CORTEX-M0" selected.
 - Target interface speed: 2000 kHz (Fixed)
 - VTarget = 3.287V
 - ERROR: Failed to connect.
Could not establish a connection to target.