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Update Flashing the Production PCB via USB serial port

Ray Jones 2019-01-10 08:51:59 +00:00
parent 6351dfbb3c
commit a468834bd1
1 changed files with 3 additions and 2 deletions
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5
Flashing-the-Production-PCB-via-USB-serial-port.md

@ -23,9 +23,10 @@ If a serial debug session is active, the following message should appear:
rst:0x1 (POWERON_RESET),boot:0x3 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_REO_V2))
waiting for download
```
**Bootloading will fail if the serial debug session remains active.
**IMPORTANT**
Bootloading will fail if the serial debug session remains active.
ESPtool will be unable to use the occupied serial port.
Ensure the serial debug session is closed before the upload takes place**
Ensure the serial debug session is closed before the upload takes place.
Once uploading is completed, you finally need to press and release the EN button to reboot the ESP32 processor.
The BOOT switch should not be operated at this time.