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mbed-os/platform/mbed_error_report.c

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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 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.
*/
#include <stdlib.h>
#include <stdarg.h>
#include "hal/serial_api.h"
#include "hal/itm_api.h"
#include "platform/mbed_error.h"
#include "platform/mbed_error_report.h"
#ifdef DEVICE_SERIAL
extern int stdio_uart_inited;
extern serial_t stdio_uart;
#endif
//Helper macro to get the current SP
#define GET_CURRENT_SP(sp) \
{ \
/*If in Handler mode we are always using MSP*/ \
if( __get_IPSR() != 0U ) { \
sp = __get_MSP(); \
} else { \
/*Look into CONTROL.SPSEL value*/ \
if ((__get_CONTROL() & 2U) == 0U) { \
sp = __get_MSP();/*Read MSP*/ \
} else { \
sp = __get_PSP();/*Read PSP*/ \
} \
} \
}
/* Converts a uint32 to hex char string */
static void value_to_hex_str(uint32_t value, char *hex_str)
{
char hex_char_map[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
int i = 0;
//Return without converting if hex_str is not provided
if(hex_str == NULL) return;
for(i=7; i>=0; i--) {
hex_str[i] = hex_char_map[(value & (0xf << (i * 4))) >> (i * 4)];
}
}
/* Converts a uint32 to dec char string */
static void value_to_dec_str(uint32_t value, char *dec_str)
{
char dec_char_map[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
int i = 0;
//Return without converting if hex_str is not provided
if(dec_str == NULL) return;
while(value > 0) {
dec_str[i++] = dec_char_map[value % 10];
value = value / 10;
}
}
void mbed_error_init(void)
{
#if DEVICE_SERIAL && (MBED_CONF_ERROR_REPORT_INTERFACE==DEVICE_SERIAL)
/* Initializes std uart if not init-ed yet */
if (!stdio_uart_inited) {
serial_init(&stdio_uart, STDIO_UART_TX, STDIO_UART_RX);
}
#endif
#if DEVICE_ITM && (MBED_CONF_ERROR_REPORT_INTERFACE==DEVICE_ITM)
/*Initialize ITM interfaces*/
mbed_itm_init();
#endif
}
void mbed_error_putc(char ch)
{
#if DEVICE_SERIAL && (MBED_CONF_ERROR_REPORT_INTERFACE==DEVICE_SERIAL)
serial_putc(&stdio_uart, ch);
#endif
#if DEVICE_ITM && (MBED_CONF_ERROR_REPORT_INTERFACE==DEVICE_ITM)
/*Initialize ITM interfaces*/
mbed_itm_send(ITM_PORT_SWO, ch);
#endif
}
/* Limited print functionality which prints the string out to
stdout/uart without using stdlib by directly calling serial-api
and also uses less resources
The fmtstr contains the format string for printing and for every %
found in that it fetches a uint32 value from values buffer
and prints it in hex format.
*/
void mbed_error_print(char *fmtstr, uint32_t *values)
{
#if DEVICE_SERIAL || DEVICE_ITM
int i = 0;
int idx = 0;
int vidx = 0;
char num_str[9]={0};
char *str=NULL;
//Init error reporting interfaces
mbed_error_init();
while(fmtstr[i] != '\0') {
if(fmtstr[i]=='%') {
i++;
if(fmtstr[i]=='x') {
//print the number in hex format
value_to_hex_str(values[vidx++],num_str);
for(idx=7; idx>=0; idx--) {
mbed_error_putc(num_str[idx]);
}
}
else if(fmtstr[i]=='d') {
memset(num_str, '0', sizeof(num_str));
//print the number in dec format
value_to_dec_str(values[vidx++],num_str);
idx=5;//Start from 5 as we dont have big decimal numbers
while(num_str[idx--]=='0' && idx > 0);//Dont print zeros at front
for(idx++;idx>=0; idx--) {
mbed_error_putc(num_str[idx]);
}
}
else if(fmtstr[i]=='s') {
//print the string
str = (char *)((uint32_t)values[vidx++]);
while(*str != '\0') {
mbed_error_putc(*str);
str++;
}
str = NULL;
} else {
//Do not handle any other % formatting and keep going
}
} else {
//handle carriage returns
if (fmtstr[i] == '\n') {
mbed_error_putc('\r');
}
mbed_error_putc(fmtstr[i]);
}
i++;
}
#endif
}
#ifdef MBED_CONF_RTOS_PRESENT
/* Prints thread info from a list */
void print_threads_info(osRtxThread_t *threads)
{
while(threads != NULL) {
print_thread( threads );
threads = threads->thread_next;
}
}
/* Prints info of a thread(using osRtxThread_t struct)*/
void print_thread(osRtxThread_t *thread)
{
uint32_t data[5];
data[0]=thread->state;
data[1]=thread->thread_addr;
data[2]=thread->stack_size;
data[3]=(uint32_t)thread->stack_mem;
data[4]=thread->sp;
mbed_error_print("\nState: 0x%x Entry: 0x%x Stack Size: 0x%x Mem: 0x%x SP: 0x%x", data);
}
#endif
/* Prints the error information */
void mbed_report_error(mbed_error_ctx *error_ctx, char *error_msg)
{
uint32_t error_vals[3] = {0};
error_vals[0] = error_ctx->error_status;
error_vals[1] = MBED_GET_ERROR_CODE(error_ctx->error_status);
error_vals[2] = MBED_GET_ERROR_MODULE(error_ctx->error_status);
mbed_error_print("\n\n++ MbedOS Error Info ++\nError Status: 0x%x Code: %d Entity: %d\nError Message: ", error_vals);
//Report error info based on error code, some errors require different
//error_vals[1] contains the error code
if(error_vals[1] == MBED_ERROR_CODE_HARDFAULT_EXCEPTION ||
error_vals[1] == MBED_ERROR_CODE_MEMMANAGE_EXCEPTION ||
error_vals[1] == MBED_ERROR_CODE_BUSFAULT_EXCEPTION ||
error_vals[1] == MBED_ERROR_CODE_USAGEFAULT_EXCEPTION ) {
mbed_error_print(error_msg, NULL);
mbed_error_print("\nLocation: 0x%x\n", (uint32_t *)&error_ctx->error_value);
} else {
switch (error_vals[1]) {
//These are errors reported by kernel handled from mbed_rtx_handlers
case MBED_ERROR_CODE_RTOS_EVENT:
mbed_error_print("Kernel Error: 0x%x, ", (uint32_t *)&error_ctx->error_value);
break;
case MBED_ERROR_CODE_RTOS_THREAD_EVENT:
mbed_error_print("Thread: 0x%x, ", (uint32_t *)&error_ctx->error_value);
break;
case MBED_ERROR_CODE_RTOS_MUTEX_EVENT:
mbed_error_print("Mutex: 0x%x, ", (uint32_t *)&error_ctx->error_value);
break;
case MBED_ERROR_CODE_RTOS_SEMAPHORE_EVENT:
mbed_error_print("Semaphore: 0x%x, ", (uint32_t *)&error_ctx->error_value);
break;
case MBED_ERROR_CODE_RTOS_MEMORY_POOL_EVENT:
mbed_error_print("MemoryPool: 0x%x, ", (uint32_t *)&error_ctx->error_value);
break;
case MBED_ERROR_CODE_RTOS_EVENT_FLAGS_EVENT:
mbed_error_print("EventFlags: 0x%x, ", (uint32_t *)&error_ctx->error_value);
break;
case MBED_ERROR_CODE_RTOS_TIMER_EVENT:
mbed_error_print("Timer: 0x%x, ", (uint32_t *)&error_ctx->error_value);
break;
case MBED_ERROR_CODE_RTOS_MESSAGE_QUEUE_EVENT:
mbed_error_print("MessageQueue: 0x%x, ", (uint32_t *)&error_ctx->error_value);
break;
default:
//Nothing to do here, just print the error info down
break;
}
mbed_error_print(error_msg, NULL);
mbed_error_print("\nLocation: 0x%x", (uint32_t *)&error_ctx->error_address);
#ifdef MBED_CONF_ERROR_FILENAME_CAPTURE_ENABLED
if(NULL != error_ctx->error_filename) {
//for string, we must pass address of a ptr which has the address of the string
uint32_t *file_name = (uint32_t *)&error_ctx->error_filename[0];
mbed_error_print("\nFile:%s", &file_name);
mbed_error_print("+0x%x", (uint32_t *)&error_ctx->error_line_number);
}
#endif
#ifdef MBED_CONF_RTOS_PRESENT
//Capture thread info
osRtxThread_t *current_thread = osRtxInfo.thread.run.curr;
error_ctx->thread_id = (uint32_t)current_thread;
error_ctx->thread_entry_address = (uint32_t)current_thread->thread_addr;
error_ctx->thread_stack_size = current_thread->stack_size;
error_ctx->thread_stack_mem = (uint32_t)current_thread->stack_mem;
#ifdef TARGET_CORTEX_M
GET_CURRENT_SP(error_ctx->thread_current_sp);
//Take advantage of the fact that the thread info in context struct is consecutively placed
mbed_error_print("\nError Value: 0x%x\nCurrent Thread: Id: 0x%x Entry: 0x%x StackSize: 0x%x StackMem: 0x%x SP: 0x%x ",
(uint32_t *)&error_ctx->error_value);
#else
//For Cortex-A targets we dont have support to capture the current SP
//Take advantage of the fact that the thread info in context struct is consecutively placed
mbed_error_print("\nError Value: 0x%x\nCurrent Thread: Id: 0x%x Entry: 0x%x StackSize: 0x%x StackMem: 0x%x ",
(uint32_t *)&error_ctx->error_value);
#endif //TARGET_CORTEX_M
#endif //MBED_CONF_RTOS_PRESENT
}
mbed_error_print("\n-- MbedOS Error Info --", NULL);
}
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