hard fault on thread: main
thread pri status sp stack size max used left tick error
-------- --- ------- ---------- ---------- ------ ---------- ---
tshell 21 ready 0x00000070 0x00000200 34% 0x00000009 -02
tidle 31 ready 0x00000054 0x00000080 65% 0x0000001c 000
main 10 ready 0x0000006c 0x00000400 20% 0x00000002 000
bus fault:
SCB_CFSR_BFSR:0x04 IMPRECISERR
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