[Bug]: T3S3 (ESP32S3) Wont flash using ESPTool or PIO Direct from CLI on Linux (rPi Bookworm)

[Talie5in]

Category

Other

Hardware

T-Beam S3

Firmware Version

2.5.any

Description

Ran into an issue where I have not been able to use ESPTool or PIO to Flash a T3S3 without powering on while holding the BOOT button to put into JTAG mode.

For a remote node I have connected to a rPi this was a bit annoying having to manually intervene to do updates.

I have however been able to get around this by modifying the platform.io for the t3s3 variant to include the below options in the build_flags.

-DARDUINO_USB_MODE=1
-DARDUINO_USB_CDC_ON_BOOT=1

This puts the unit into JTAG mode on boot (similar to a Heltec v3)

Not sure if both are needed, but once I have done a ./device-update with the build image (with a manual process first), I can now flash firmware without having to manual power cycle and hold the boot button.

Sourced from : espressif/arduino-esp32#6762 (comment)

Relevant log output

**How it currently boots up**
[  227.720622] usb 1-1.2: USB disconnect, device number 6
[  227.925399] usb 1-1.2: new full-speed USB device number 7 using dwc_otg
[  228.049369] usb 1-1.2: New USB device found, idVendor=303a, idProduct=1001, bcdDevice= 1.00
[  228.049393] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  228.049401] usb 1-1.2: Product: LilyGo TLora-T3S3-V1
[  228.049408] usb 1-1.2: Manufacturer: Espressif Systems
[  228.049414] usb 1-1.2: SerialNumber: 34B7DA53963C
[  228.056415] cdc_acm 1-1.2:1.0: ttyACM0: USB ACM device

**How it should boot up**
[  225.079804] usb 1-1.2: USB disconnect, device number 4
[  227.405408] usb 1-1.2: new full-speed USB device number 6 using dwc_otg
[  227.497027] usb 1-1.2: New USB device found, idVendor=303a, idProduct=1001, bcdDevice= 1.01
[  227.497065] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  227.497088] usb 1-1.2: Product: USB JTAG/serial debug unit
[  227.497103] usb 1-1.2: Manufacturer: Espressif
[  227.497118] usb 1-1.2: SerialNumber: 34:B7:DA:53:96:3C
[  227.499843] cdc_acm 1-1.2:1.0: ttyACM0: USB ACM device