[Hard fault] devo7e-v4.0.1-ac4f0b2 R0 = 00000000 R1 = 10000000 R2 = 00000000 R3 = 20004ad9 R12 = 00000020 LR [R14] (subroutine call return address) = 20004aff PC [R15] (program counter) = 20004afe PSR = 01000000 BFAR = e000ed38 CFSR = 00000400 HFSR = 40000000 DFSR = 00000000 AFSR = 00000000 SCB_SHCSR = 00000000 Top of Stack:20004000 Stack Detect:20003f58 Backtrace: 20003fc4 : 08016a99 20003fcc : 08016fb3 20003fdc : 0800a053 20003fec : 0800a137 20003ffc : 080023dd Done