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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"ESP32C2 WDT cannot be used","articleBody":"### Port, board and/or hardware\n\nESP32 /ESP32_GENERIC_C2\n\n### MicroPython version\n\nMicroPython v1.27.0 on 2025-12-09; ESP32C2 module with ESP32C2\n\n### Reproduction\n\n```\nfrom machine import WDT\nwdt = WDT(timeout=2000)  # enable it with a timeout of 2s\nwdt.feed()\n```\n\n### Expected behaviour\n\n_No response_\n\n### Observed behaviour\n\nRebooting...\n\u0012r\u0012bl~l\u001E\u0012r\u0002rblb\u000Enn\f\flpl`\u0002\f\u0012nn\u001Er\u0012\u0012\u0002ll\f\f\u000Elrb\f\fr\u0002\fblrl`\u0012lbbp~n\u001E\f\u0002\fbl\u0012l\u0012\u0012l\u0002l\u0012`~llrl\u0012⒂\u0002\f`\f\f\f\f쎜\u000El\u0002l\u0012\u001E\f`\u0002rn\f~bnnpn\u0002\fbll`\u0002pn\u0010b\f\frp\u0010\u0002\f\fbn|b\f\fb\u0002l`\u0002pn\u0010b\f\f\flrr\fbn|b\f\f\u0002ll`\u0002pn\u0010b\f\f\flb\f\fbn|b\f\fb쎎l`\u0002\u0012n|\u0002\f\f\flrrl`\u0002\nMicroPython v1.27.0 on 2025-12-09; ESP32C2 module with ESP32C2\nType \"help()\" for more information.\n\u003e\u003e\u003e \nA fatal error occurred. The crash dump printed below may be used to help\ndetermine what caused it. If you are not already running the most recent\nversion of MicroPython, consider upgrading. New versions often fix bugs.\n\nTo learn more about how to debug and/or report this crash visit the wiki\npage at: https://github.com/micropython/micropython/wiki/ESP32-debugging\n\nMPY version : v1.27.0 on 2025-12-09\nIDF version : v5.5.1\nMachine     : ESP32C2 module with ESP32C2\n\nGuru Meditation Error: Core  0 panic'ed (Interrupt wdt timeout on CPU0). \n\nCore  0 register dump:\nMEPC    : 0x4038801c  RA      : 0x403844a0  SP      : 0x3fcbae50  GP      : 0x3fcac028  \nTP      : 0x3fcbaf50  T0      : 0x40081260  T1      : 0x0000000f  T2      : 0xffffffff  \nS0/FP   : 0x00000000  S1      : 0x00000001  A0      : 0x3fcb3928  A1      : 0x00000001  \nA2      : 0x00000000  A3      : 0x00000004  A4      : 0x00000001  A5      : 0x3fcb3000  \nA6      : 0x00000004  A7      : 0xfff00000  S2      : 0x00000004  S3      : 0x00000001  \nS4      : 0x3c136000  S5      : 0x00000002  S6      : 0x00000005  S7      : 0x3fcb4000  \nS8      : 0x3fcaf498  S9      : 0x00000001  S10     : 0x00000000  S11     : 0x00000000  \nT3      : 0xffffffff  T4      : 0xffffffff  T5      : 0xffffffff  T6      : 0xffffffff  \nMSTATUS : 0x00001881  MTVEC   : 0x40380001  MCAUSE  : 0x00000018  MTVAL   : 0x70e7aa23  \nMHARTID : 0x00000000  \n\nStack memory:\n3fcbae50: 0x00000004 0x00000003 0x3fcaf000 0x42127076 0x00000004 0x00000003 0x3fcaf000 0x42029b86\n3fcbae70: 0x00000004 0x00000003 0xffffffff 0x42048586 0x00000000 0x00000003 0x3c130000 0x42048f34\n3fcbae90: 0x00000020 0x3fcc3f64 0x00000001 0x3fcaf000 0x00000020 0x00000000 0x3fcbb830 0x3fcaf400\n3fcbaeb0: 0x00000000 0x00000000 0x3fcaf498 0x3fcb4000 0x42029000 0x3c132000 0x3fcaf000 0x3fcbaee0\n3fcbaed0: 0x3fcc3f64 0x00003c00 0x3fcbaf64 0x420297d2 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbaef0: 0x00000000 0x00000000 0x00000000 0x3fcbaee0 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbaf10: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbaf30: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5\n3fcbaf50: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0x00009000 0x55555559 0xaaaaaa56 0x6aaa5aaa\n3fcbaf70: 0xaa966aaa 0x555aaaaa 0xaaa42555 0xa9aaaaa6 0x90aaaaaa 0x0a9a90a6 0x00000000 0x00000000\n3fcbaf90: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbafb0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbafd0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbaff0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb010: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb030: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb050: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb070: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb090: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb0b0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb0d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb0f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb110: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb130: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb150: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb170: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb190: 0x00000000 0x00000000 0x00000000 0x00040000 0x00000000 0x00000010 0x00000000 0x00000000\n3fcbb1b0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb1d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb1f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb210: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n3fcbb230: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000\n\n\n\nELF file SHA256: 348ea43d8\n\n### Additional Information\n\nNo, I've provided everything above.\n\n### Code of Conduct\n\nYes, I agree","author":{"url":"https://github.com/dahanzimin","@type":"Person","name":"dahanzimin"},"datePublished":"2026-01-09T10:46:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/18666/micropython/issues/18666"}