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Update Flashing the Production PCB via USB serial port

Ray Jones 2019-01-10 09:04:22 +00:00
parent e83643b54a
commit 47ac574387
1 changed files with 2 additions and 2 deletions
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Flashing-the-Production-PCB-via-USB-serial-port.md

@ -18,6 +18,8 @@ The ESP32 processor needs to be prepared for bootloading by following the follow
1. Release the EN button.
1. Release the BOOT button.
The above sequence can be performed at any time prior to the upload. It does not need to happen at the moment the upload is being attempted. The ESP32 will simply wait in the bootloader until triggered by ESPtool.
If a serial debug session is active, the following message should then appear:
```
rst:0x1 (POWERON_RESET),boot:0x3 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_REO_V2))
@ -28,8 +30,6 @@ 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.
The above sequence can be performed at any time prior to the upload. It does not need to happen at the moment the upload is being attempted. The ESP32 will simply wait in the bootloader until triggered by ESPtool.
### Upload
After completion of code compilation, the Arduino environment automatically launches ESPtool.exe to upload the generated binary file to the ESP32.
An example (automatic) sequence follows: