10000 esp32: Restore ESP32-C3 brownout detector settings to IDF defaults. · micropython/micropython@e71a324 · GitHub
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esp32: Restore ESP32-C3 brownout detector settings to IDF defaults.
Commit a66bd7a added the ESP32_GENERIC_C3_USB board (now merged with ESP32_GENERIC_C3) and changed the brownout detector from the default level 7 (~2.51V) to level 4 (~2.92V). Raising the level again seems to fix random BOD resets on some of the cheaper ESP32-C3 dev boards (that likely skimp on power supply capacitance). Specifically, this change prevents random resets running multi_bluetooth tests on ESP32-C3 "SuperMini" board. Also removed from the LOLIN_C3_MINI board as it seems this config is a copy of the generic one. This work was funded through GitHub Sponsors. Signed-off-by: Angus Gratton <angus@redyak.com.au>
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‎ports/esp32/boards/ESP32_GENERIC_C3/sdkconfig.c3usb

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CONFIG_ESP32C3_REV_MIN_3=y
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CONFIG_ESP32C3_BROWNOUT_DET=y
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CONFIG_ESP32C3_BROWNOUT_DET_LVL_SEL_7=
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CONFIG_ESP32C3_BROWNOUT_DET_LVL_SEL_4=y
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CONFIG_ESP32C3_BROWNOUT_DET_LVL=4

‎ports/esp32/boards/LOLIN_C3_MINI/sdkconfig.board

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CONFIG_ESP32C3_REV_MIN_3=y
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CONFIG_ESP32C3_BROWNOUT_DET=y
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CONFIG_ESP32C3_BROWNOUT_DET_LVL_SEL_7=
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CONFIG_ESP32C3_BROWNOUT_DET_LVL_SEL_4=y
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CONFIG_ESP32C3_BROWNOUT_DET_LVL=4

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