[Hard fault] devo7e-v4.0.1-ac4f0b2 R0 = 00000000 R1 = 00010000 R2 = 00000000 R3 = 00000001 R12 = 20003df8 LR [R14] (subroutine call return address) = 200043cf PC [R15] (program counter) = 200043ce PSR = 01000000 BFAR = e000ed38 CFSR = 00000400 HFSR = 40000000 DFSR = 00000000 AFSR = 00000000 SCB_SHCSR = 00000000 Top of Stack:20004000 Stack Detect:20003f68 Backtrace: 20003fb4 : 080171bb 20003fec : 0800a129 20003ffc : 080023dd 20003ffd : 08080023 Done