Diff: TARGET_NUCLEO_F334R8/TOOLCHAIN_GCC_ARM/mbed_fault_handler.h

Revision:

172:65be27845400

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TARGET_NUCLEO_F334R8/TOOLCHAIN_GCC_ARM/mbed_fault_handler.h	Wed Feb 20 20:53:29 2019 +0000
@@ -0,0 +1,76 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2018 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+#ifndef MBED_FAULT_HANDLER_H
+#define MBED_FAULT_HANDLER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif 
+
+//Fault context struct
+//WARNING: DO NOT CHANGE THIS STRUCT WITHOUT MAKING CORRESPONDING CHANGES in except.S files.
+//Offset of these registers are used by fault handler in except.S
+typedef struct {
+  uint32_t R0_reg;
+  uint32_t R1_reg;
+  uint32_t R2_reg;
+  uint32_t R3_reg;
+  uint32_t R4_reg;
+  uint32_t R5_reg;
+  uint32_t R6_reg;
+  uint32_t R7_reg;
+  uint32_t R8_reg;
+  uint32_t R9_reg;
+  uint32_t R10_reg;
+  uint32_t R11_reg;
+  uint32_t R12_reg;
+  uint32_t SP_reg;
+  uint32_t LR_reg;
+  uint32_t PC_reg;
+  uint32_t xPSR;
+  uint32_t PSP;
+  uint32_t MSP;
+  uint32_t EXC_RETURN;
+  uint32_t CONTROL;    
+} mbed_fault_context_t;
+
+//Fault type definitions
+//WARNING: DO NOT CHANGE THESE VALUES WITHOUT MAKING CORRESPONDING CHANGES in except.S files.
+#define HARD_FAULT_EXCEPTION       (0x10) //Keep some gap between values for any future insertion/expansion
+#define MEMMANAGE_FAULT_EXCEPTION  (0x20)
+#define BUS_FAULT_EXCEPTION        (0x30)
+#define USAGE_FAULT_EXCEPTION      (0x40)
+
+//This is a handler function called from Fault handler to print the error information out.
+//This runs in fault context and uses special functions(defined in mbed_fault_handler.c) to print the information without using C-lib support.
+void mbed_fault_handler (uint32_t fault_type, void *mbed_fault_context_in);
+
+/**
+ * Call this function to retrieve the fault context after a fatal exception which triggered a system reboot. The function retrieves the fault context stored in crash-report ram area which is preserved over reboot.
+ * @param  fault_context        Pointer to mbed_fault_context_t struct allocated by the caller. This is the mbed_fault_context_t info captured as part of the fatal exception which triggered the reboot.
+ * @return                      0 or MBED_SUCCESS on success.
+ *                              MBED_ERROR_INVALID_ARGUMENT in case of invalid error_info pointer
+ *                              MBED_ERROR_ITEM_NOT_FOUND if no reboot context is currently captured by teh system 
+ *
+ */
+mbed_error_status_t mbed_get_reboot_fault_context (mbed_fault_context_t *fault_context);
+
+#ifdef __cplusplus
+}
+#endif 
+
+#endif