fix: release DTR in hardReset so chip boots the application#38
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deadprogram merged 1 commit intotinygo-org:mainfrom Apr 24, 2026
Merged
fix: release DTR in hardReset so chip boots the application#38deadprogram merged 1 commit intotinygo-org:mainfrom
deadprogram merged 1 commit intotinygo-org:mainfrom
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jgangemi
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@jgangemi can you please resolve the merge conflict? Thank you. |
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When the prior operation left DTR=true (IO0 held LOW on typical UART bridges), hardReset only toggled RTS and released the chip from reset with IO0 still LOW, sending it back into the download-mode bootloader instead of the application. esptool.py's HardReset explicitly deasserts DTR between the EN=LOW and EN=HIGH transitions. Mirror that: set DTR(false) before the final RTS(false) on the non-USB path.
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done |
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Thanks for the fix @jgangemi now merging. |
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When the prior operation left DTR=true (IO0 held LOW on typical UART
bridges), hardReset only toggled RTS and released the chip from reset
with IO0 still LOW, sending it back into the download-mode bootloader
instead of the application.
esptool.py's HardReset explicitly deasserts DTR between the EN=LOW and
EN=HIGH transitions. Mirror that: set DTR(false) before the final
RTS(false) on the non-USB path.