mhsw-espurna/code/espurna/crash.h

// -----------------------------------------------------------------------------
// Save crash info
// Taken from krzychb EspSaveCrash
// https://github.com/krzychb/EspSaveCrash
// -----------------------------------------------------------------------------

#pragma once

#include "espurna.h"

#include <Arduino.h>
#include <cstdint>

#define SAVE_CRASH_EEPROM_OFFSET    0x0100  // initial address for crash data

/**
 * Structure of the single crash data set
 *
 *  1. Crash time
 *  2. Restart reason
 *  3. Exception cause
 *  4. epc1
 *  5. epc2
 *  6. epc3
 *  7. excvaddr
 *  8. depc
 *  9. adress of stack start
 * 10. adress of stack end
 * 11. stack trace size
 * 12. stack trace bytes
 *     ...
 */
#define SAVE_CRASH_CRASH_TIME       0x00  // 4 bytes
#define SAVE_CRASH_RESTART_REASON   0x04  // 1 byte
#define SAVE_CRASH_EXCEPTION_CAUSE  0x05  // 1 byte
#define SAVE_CRASH_EPC1             0x06  // 4 bytes
#define SAVE_CRASH_EPC2             0x0A  // 4 bytes
#define SAVE_CRASH_EPC3             0x0E  // 4 bytes
#define SAVE_CRASH_EXCVADDR         0x12  // 4 bytes
#define SAVE_CRASH_DEPC             0x16  // 4 bytes
#define SAVE_CRASH_STACK_START      0x1A  // 4 bytes
#define SAVE_CRASH_STACK_END        0x1E  // 4 bytes
#define SAVE_CRASH_STACK_SIZE       0x22  // 2 bytes
#define SAVE_CRASH_STACK_TRACE      0x24  // variable

constexpr size_t crashUsedSpace() {
    return (SAVE_CRASH_EEPROM_OFFSET + SAVE_CRASH_STACK_SIZE + 2);
}

void crashClear();
void crashDump();
void crashSetup();