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-rw-r--r--stm32f4xx_it.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/stm32f4xx_it.c b/stm32f4xx_it.c
index b2b64bf..ea932fd 100644
--- a/stm32f4xx_it.c
+++ b/stm32f4xx_it.c
@@ -69,5 +69,60 @@ void SysTick_Handler(void)
/* USER CODE BEGIN 1 */
+void hard_fault_handler_c (unsigned int * hardfault_args)
+{
+ volatile unsigned int stacked_r0;
+ volatile unsigned int stacked_r1;
+ volatile unsigned int stacked_r2;
+ volatile unsigned int stacked_r3;
+ volatile unsigned int stacked_r12;
+ volatile unsigned int stacked_lr;
+ volatile unsigned int stacked_pc;
+ volatile unsigned int stacked_psr;
+
+ stacked_r0 = hardfault_args[0];
+ stacked_r1 = hardfault_args[1];
+ stacked_r2 = hardfault_args[2];
+ stacked_r3 = hardfault_args[3];
+
+ stacked_r12 = hardfault_args[4];
+ stacked_lr = hardfault_args[5];
+ stacked_pc = hardfault_args[6];
+ stacked_psr = hardfault_args[7];
+
+ printf ("\n[Hard fault handler]\n");
+ printf ("R0 = %08x\n", stacked_r0);
+ printf ("R1 = %08x\n", stacked_r1);
+ printf ("R2 = %08x\n", stacked_r2);
+ printf ("R3 = %08x\n", stacked_r3);
+ printf ("R12 = %08x\n", stacked_r12);
+ printf ("LR [R14] = %08x subroutine call return address\n", stacked_lr);
+ printf ("PC [R15] = %08x program counter\n", stacked_pc);
+ printf ("PSR = %08x\n", stacked_psr);
+ printf ("BFAR = %08x\n", (*((volatile unsigned int *)(0xE000ED38))));
+ printf ("CFSR = %08x\n", (*((volatile unsigned int *)(0xE000ED28))));
+ printf ("HFSR = %08x\n", (*((volatile unsigned int *)(0xE000ED2C))));
+ printf ("DFSR = %08x\n", (*((volatile unsigned int *)(0xE000ED30))));
+ printf ("AFSR = %08x\n", (*((volatile unsigned int *)(0xE000ED3C))));
+
+ while (1);
+}
+
+void HardFault_Handler(void) __attribute__( ( naked ) );
+void HardFault_Handler(void)
+{
+ __asm volatile (
+ " tst lr, #4 \n"
+ " ite eq \n"
+ " mrseq r0, msp \n"
+ " mrsne r0, psp \n"
+ " b hard_fault_handler_c \n"
+ " ldr r1, [r0, #24] \n"
+ " ldr r2, handler2_address_const \n"
+ " bx r2 \n"
+ " handler2_address_const: .word hard_fault_handler_c \n"
+ );
+}
+
/* USER CODE END 1 */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/