Reading Exception Information
ESP.getResetReason()
ESP.getResetInfo()
ESP.getFreeSketchSpace()
ESP.getFreeHeap()
Simulating Fatal Exceptions
Exceptions
| EXC-CAUSE CODE | CAUSE NAME | CAUSE DESCRIPTION | REQUIRED OPTION | EXC-VADDR LOADED |
|---|---|---|---|---|
| 0 | IllegalInstructionCause | Illegal instruction | Exception | No |
| 1 | SyscallCause | SYSCALL instruction | Exception | No |
| 2 | InstructionFetchErrorCause | Processor internal physical address or data error during instruction fetch | Exception | Yes |
| 3 | LoadStoreErrorCause | Processor internal physical address or data error during load or store | Exception | Yes |
| 4 | Level1InterruptCause | Level-1 interrupt as indicated by set level-1 bits in the INTERRUPT register | Interrupt | No |
| 5 | AllocaCause | MOVSP instruction, if caller�s registers are not in the register file | Windowed Register | No |
| 6 | IntegerDivideByZeroCause | QUOS, QUOU, REMS, or REMU divisor operand is zero | 32-bit Integer Divide | No |
| 7 | Reserved for Tensilica | |||
| 8 | PrivilegedCause | Attempt to execute a privileged operation when CRING ? 0 | MMU | No |
| 9 | LoadStoreAlignmentCause | Load or store to an unaligned address | Unaligned Exception | Yes |
| 10..11 | Reserved for Tensilica | |||
| 12 | InstrPIFDataErrorCause | PIF data error during instruction fetch | Processor Interface | Yes |
| 13 | LoadStorePIFDataErrorCause | Synchronous PIF data error during LoadStore access | Processor Interface | Yes |
| 14 | InstrPIFAddrErrorCause | PIF address error during instruction fetch | Processor Interface | Yes |
| 15 | LoadStorePIFAddrErrorCause | Synchronous PIF address error during LoadStore access | Processor Interface | Yes |
| 16 | InstTLBMissCause | Error during Instruction TLB refill | MMU | Yes |
| 17 | InstTLBMultiHitCause | Multiple instruction TLB entries matched | MMU | Yes |
| 18 | InstFetchPrivilegeCause | An instruction fetch referenced a virtual address at a ring level less than CRING | MMU | Yes |
| 19 | Reserved for Tensilica | |||
| 20 | InstFetchProhibitedCause | An instruction fetch referenced a page mapped with an attribute that does not permit instruction fetch | Region Protection or MMU | Yes |
| 21..23 | Reserved for Tensilica | |||
| 24 | LoadStoreTLBMissCause | Error during TLB refill for a load or store | MMU | Yes |
| 25 | LoadStoreTLBMultiHitCause | Multiple TLB entries matched for a load or store | MMU | Yes |
| 26 | LoadStorePrivilegeCause | A load or store referenced a virtual address at a ring level less than CRING | MMU | Yes |
| 27 | Reserved for Tensilica | |||
| 28 | LoadProhibitedCause | A load referenced a page mapped with an attribute that does not permit loads | Region Protection or MMU | Yes |
| 29 | StoreProhibitedCause | A store referenced a page mapped with an attribute that does not permit stores | Region Protection or MMU | Yes |
| 30..31 | Reserved for Tensilica | |||
| 32..39 | CoprocessornDisabled | Coprocessor n instruction when cpn disabled. n varies 0..7 as the cause varies 32..39 | Coprocessor | No |
| 40..63 | Reserved |
Beerfridge Exception
| resetInfo | Fatal exception:4 flag:3 (SOFT_WDT) epc1:0x4000dd11 epc2:0x00000000 epc3:0x00000000 excvaddr:0x00000000 depc:0x00000000 |
| resetReason | Software Watchdog |
Reference
| Reference | URL |
|---|---|
| ESP8266 Fatal exception and Wdt Reset | https://circuits4you.com/2017/12/19/esp8266-fatal-exception-wdt-reset/ |