Revision as of 17:36, 25 March 2022

OCEOS Logging

OCEOS logs time stamped records of anomalies detected during execution.

Logging Introduction

OCEOS logging is structured as a circular buffer, older entries are overwritten by new entries once all entries are in use. System calls are provided to add entries the log, set its maximum size, and return the number of entries, and reset.
It is set up initially as an array of 32-bit words that starts at a 32-bit aligned address provided by the application developer.

OCEOS does not change the log entries after reset, so if log area is located in non-volatile memory, after reset, the application can read to recover possible reasons of failure. Only call to oceos_log_reset() can be used to reset all log entries if desired.

Log directives can be called from main() after oceos_init().

The read and write indices are stored in the log area and if equal indicate that the log is empty.

The application developer can specify a function to be called when 3/4 of log entries are in use. This function is called again only after 3/4 of log entries have been read and the log has again become 3/4 full.
OCEOS will call a user defined function void oceos_on_full_log(void*).

void oceos_on_full_log(void*);
/*
* Create the application configuration structure
*/
struct application_configuration           app_config = {0};
app_config.log_full_function             = &oceos_on_full_log;            // NULL => ignore

Log entry types are defined in system_log.h header file. A log entry type is an 8-bit number. Values from 0 to 127 can be defined by the application developer. Values from 128 to 255 are used by OCEOS as below.

enum LOG_ENTRY_TYPE{
  LOG_SYS_OK = 0x80U,
  LOG_NULL_FATAL,
  LOG_OCEOS_ABORT,
  LOG_INVALID_SYSTEM_STATE,
  LOG_LOG_NOT_VALID_ENTRY,
  LOG_STATUS_INVALID,
  LOG_NULL_POINTER,
  LOG_INIT_FAIL,
  LOG_TIME_INIT_FAIL,
  LOG_TIME_CONFIG_FREEZE_FAIL,
  LOG_TIME_CONFIG_UNFREEZE_FAIL,
  LOG_TIME_RESET_FAIL,
  LOG_TIME_SCALER_FAIL,
  LOG_TIME_RELOAD_FAIL,
  LOG_TIME_COUNTER_FAIL,
  LOG_TIME_CONTROL_FAIL,
  LOG_TIME_POINTER_NULL,
  LOG_TIME_POINTER_LOW_NULL,
  LOG_TIME_START_FAIL,
  LOG_FIXED_INIT_FAIL,
  LOG_DYNAMIC_INIT_FAIL,
  LOG_INIT_TASK_START_FAIL,
  LOG_DEADLINE_MISSED,
  LOG_TASK_DISABLED,
  LOG_TASK_ENABLED,
  LOG_JOB_INVALID,
  LOG_JOB_NONE_FREE,
  LOG_JOB_NOT_EXECUTING,
  LOG_JOB_NOT_ACTIVE,
  LOG_READYQ_TOO_BIG,
  LOG_READYQ_SENTINEL_BAD,
  LOG_READYQ_FULL,
  LOG_READYQ_EMPTY,
  LOG_READYQ_PUT_DISABLED_TASK,
  LOG_READYQ_PUT_FAIL,
  LOG_READYQ_REMOVE_DONE,
  LOG_READYQ_REMOVE_FAIL,
  LOG_PARAM_BAD_ID,
  LOG_PARAM_BAD_TIME,
  LOG_PARAM_ACTION_MISSING,
  LOG_PARAM_JOB_MISSING,
  LOG_MUTEX_BAD_CEILING,
  LOG_MUTEX_ALREADY_HELD,
  LOG_MUTEX_ALREADY_FREE,
  LOG_MUTEX_WRONG_JOB,
  LOG_MUTEX_NESTING_BAD,
  LOG_MUTEX_EXIT_HOLDING,
  LOG_SEMAPHORE_COUNT_EXCEEDED,
  LOG_SEMAPHORE_MAX_ALREADY_REACHED,
  LOG_SEMAPHORE_INVALID_PENDING_JOB,
  LOG_SEMAPHORE_PENDING_REMOVE_FAIL,
  LOG_SEMAPHORE_PENDING_TIMED_REMOVE_FAIL,
  LOG_SEMAPHORE_TRANSFER_READYQ_FAIL,
  LOG_DATAQ_FULL,
  LOG_DATAQ_EMPTY,
  LOG_DATAQ_COUNT_EXCEEDED,
  LOG_DATAQ_PENDING_QUEUE_FULL,
  LOG_DATAQ_INVALID_PENDING_JOB,
  LOG_DATAQ_PENDING_REMOVE_FAIL,
  LOG_DATAQ_TIMED_JOB_REMOVE_FAIL,
  LOG_TIMED_ACTION_TIMER_NULL,
  LOG_TIMED_ACTION_TIMER_STOP_FAIL,
  LOG_TIMED_ACTION_NOT_INIT,
  LOG_TIMED_ACTION_INT_REG_FAILED, // Failed to register timed action interrupt handler
  LOG_TIMED_ACTION_INVALID,
  LOG_TIMED_ACTION_BAD_INDEX,
  LOG_TIMED_ACTION_MISSED,
  LOG_TIMED_ACTION_Q_FULL,
  LOG_TIMED_ACTION_Q_EMPTY,
  LOG_TIMED_ACTION_PUT_FAIL,
  LOG_TIMED_ACTION_REMOVE_FAIL,
  LOG_TIMED_ACTION_BAD_JOB_ID,
  LOG_TIMED_ACTION_DO_FAIL,
  LOG_SYSTEM_ERROR,
  LOG_TIME_BSP_SYSFREQ_NULL,
  LOG_SEMAPHORE_TIMEOUT_NOT_INIT,    // If user wants to use semaphore with timeout without previous initialization of timed actions
  LOG_DATAQ_TIMEOUT_NOT_INIT,       // If user wants to use dataq with timeout without previous initialization of timed actions
  LOG_TIMED_ACTION_START_WHILE_RUNNING,
  LOG_INT_HANDLER_IS_NULL,
  LOG_SET_OCEOS_TRAP_HANDLER_FAILED,
  LOG_INT_CALLED_NO_INIT,
  LOG_FAILED_SET_INT_PRIO,       // Failed to set PendSV priority
  LOG_FAILED_PENDSV_INIT,
  LOG_SYS_TIME_NOT_INIT          // System time is not initialized
};

Logging Configuration

Application defines arrays to hold OCEOS internal data. User must specified array to accommodate all logging information. Please read OCEOS data area layouts

#define LOG_DATA_ARRAY_SIZE_U32S                0x100// Calculated value. Read manual
U32_t log_data[LOG_DATA_ARRAY_SIZE_U32S];
...
/*
 * Create the application configuration structure
 */
struct application_configuration           app_config = {0};
app_config.log_address                   = (adrs_t)log_data;

User must define number of log entries.

#define NUMBER_OF_LOG_ENTRIES                   16 // 16 to 1024
/*
 * Create the application configuration structure
 */
struct application_configuration           app_config = {0};
app_config.log_number_of_entries         = NUMBER_OF_LOG_ENTRIES;

API Functions

API Functions
Directive	Description	main	task	IRQ handler
oceos_log_add_entry()	Add a log entry	*	*	*
oceos_log_remove_entry()	Read and remove the oldest unread log entry	*	*	*
oceos_log_get_indexed_entry()	Read the log entry at the given index	*	*	*
oceos_log_reset()	Clear all log entries and reset to empty	*	*	*
oceos_log_get_size()	Get the number of log entries	*	*	*

oceos_log_add_entry()

Header File
system_log.h

Description
Add a log entry (32-bit time is included automatically).
Overwrites the oldest unread entry if the log is full.
Prototype
enum DIRECTIVE_STATUS   oceos_log_add_entry(
    enum LOG_ENTRY_TYPE type,// 8 bits
    const unsigned int info // information (24 bits)
);
Parameters

Parameter Description

type Log type (8 bits)

info Extra information (24 bits)

Returns
This function returns enum DIRECTIVE_STATUS.

enum DIRECTIVE_STATUS Description

NOT_CONFIGURED Log check state failed or
Logging manager is not initialized

INVALID_NUMBER Parameter info is more than 24 bits

INCORRECT_STATE Problem with read/write indexes

SUCCESSFUL All OK

Example Usage
enum DIRECTIVE_STATUS status;
status = oceos_log_add_entry(LOG_INVALID_SYSTEM_STATE, 0xcafe);  
if(SUCCESSFUL != status){
    // Handle ERROR
}

oceos_log_remove_entry()

Header File
system_log.h

Description
Read and remove the oldest unread log entry.
If the log is not empty use the entry at the read index to update the value at the output pointer, returning SUCCESSFUL.
If the log is empty, set the value at the output pointer to LOG_LOG_NOT_VALID_ENTRY and return UNSATISFIED.
The read index is incremented in a circular fashion.
Prototype
enum DIRECTIVE_STATUS   oceos_log_remove_entry(
    struct log_entry * const outputPtr
);
Parameters

Parameter Description

outputPtr Pointer to Log entry to return log information

Returns
This function returns enum DIRECTIVE_STATUS.

enum DIRECTIVE_STATUS Description

NOT_CONFIGURED Log check state failed or
Logging is not setup

INCORRECT_STATE Problem with read/write indexes

UNSATISFIED Log is empty

SUCCESSFUL All OK

Example Usage
enum DIRECTIVE_STATUS status;
struct log_entry outputPtr;
status = oceos_log_remove_entry(&outputPtr);
if(SUCCESSFUL != status){
    // Handle ERROR
}

oceos_log_get_indexed_entry()

Header File
system_log.h

Description

Prototype

Parameters

Parameter Description

Returns
This function returns enum DIRECTIVE_STATUS.

enum DIRECTIVE_STATUS Description

INCORRECT_STATE If system Meta pointer is NULL or
Init pointer is NULL or Start up phase check fail or Fixed data checksum failed (check log)

INVALID_NAME If Start Sentinel for fixed area is corrupt or
Start Sentinel for dynamic area is corrupt

INVALID_NUMBER If Configuration and actual parameters do not match
(In configuration file was defined 5 tasks, but created less)

SUCCESSFUL If All OK

Example Usage

oceos_log_reset()

Header File
system_log.h

Description

Prototype

Parameters

Parameter Description

Returns
This function returns enum DIRECTIVE_STATUS.

enum DIRECTIVE_STATUS Description

INCORRECT_STATE If system Meta pointer is NULL or
Init pointer is NULL or Start up phase check fail or Fixed data checksum failed (check log)

INVALID_NAME If Start Sentinel for fixed area is corrupt or
Start Sentinel for dynamic area is corrupt

INVALID_NUMBER If Configuration and actual parameters do not match
(In configuration file was defined 5 tasks, but created less)

SUCCESSFUL If All OK

Example Usage

oceos_log_get_size()

Header File
system_log.h

Description

Prototype

Parameters

Parameter Description

Returns
This function returns enum DIRECTIVE_STATUS.

enum DIRECTIVE_STATUS Description

INCORRECT_STATE If system Meta pointer is NULL or
Init pointer is NULL or Start up phase check fail or Fixed data checksum failed (check log)

INVALID_NAME If Start Sentinel for fixed area is corrupt or
Start Sentinel for dynamic area is corrupt

INVALID_NUMBER If Configuration and actual parameters do not match
(In configuration file was defined 5 tasks, but created less)

SUCCESSFUL If All OK

Example Usage

@@ Line 210: / Line 210: @@
 <span style="color:#1b7ac2">'''Description'''</span><br>
+Read and remove the oldest unread log entry.
+If the log is not empty use the entry at the read index to update the value at the output pointer, returning SUCCESSFUL.
+If the log is empty, set the value at the output pointer to LOG_LOG_NOT_VALID_ENTRY and return UNSATISFIED.
+The read index is incremented in a circular fashion.<br>
 <span style="color:#1b7ac2">'''Prototype'''</span><br>
 <syntaxhighlight lang="C">
+enum DIRECTIVE_STATUS   oceos_log_remove_entry(
+    struct log_entry * const outputPtr
+);
 </syntaxhighlight>
 <span style="color:#1b7ac2">'''Parameters'''</span><br>
@@ Line 220: / Line 228: @@
 ! Parameter !! Description
 |-
-|  ||
+| outputPtr || Pointer to Log entry to return log information
 |}
 <span style="color:#1b7ac2">'''Returns'''</span><br>
@@ Line 228: / Line 236: @@
 ! enum DIRECTIVE_STATUS !! Description
 |-
-| INCORRECT_STATE || If system Meta pointer is NULL or
+|NOT_CONFIGURED  || Log check state failed or
-                     Init pointer is NULL or
+                  Logging is not setup
-                     Start up phase check fail or
-                     Fixed data checksum failed (check log)
 |-
-| INVALID_NAME    || If Start Sentinel for fixed area is corrupt or
+|INCORRECT_STATE || Problem with read/write indexes
-                     Start Sentinel for dynamic area is corrupt
 |-
-| INVALID_NUMBER  || If Configuration and actual parameters do not match
+|UNSATISFIED     || Log is empty
-                     (In configuration file was defined 5 tasks, but created less)
 |-
-| SUCCESSFUL     || If All OK
+|SUCCESSFUL      || All OK
 |}
 <span style="color:#1b7ac2">'''Example Usage'''</span><br>
 <syntaxhighlight lang="C">
+enum DIRECTIVE_STATUS status;
- </syntaxhighlight>
+struct log_entry outputPtr;
+status = oceos_log_remove_entry(&outputPtr);
+if(SUCCESSFUL != status){
+     // Handle ERROR
+}
+</syntaxhighlight>
 </blockquote>
 ===<span style="color:#0000ff">oceos_log_get_indexed_entry()</span>===
 <blockquote style="border-left-style: none;">

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