[Hard fault handler00000000 R0 = 40003800 R1 = 00000000 R2 = 0000025a R3 = 00000082 R12 = 00000050 LR [R14] (subroutine call return address) = 080093cd PC [R15] (program counter) = 08020694 PSR = 6100002e BFAR = e000ed38 CFSR = 00000000 HFSR = 00000000 DFSR = 00000000 AFSR = 00000000 SCB_SHCSR = 00000000 impure_ptr = 08021874 00000026 20000082 0000001a