'Traceback (most recent call last): File "<stdin>", line 1 SyntaxError: invalid syntax' on first connection with ESP32-C6-MINI-1 #17208

Tico06 · 2025-04-29T12:37:09Z

Tico06
Apr 29, 2025

Hi There,

I've built a firmware for ESP32 C6 MINI 1, and everything looks good except on first connection with mpremote I have a SyntaxError msg:

$ mpremote 
Connected to MicroPython at /dev/ttyACM0
Use Ctrl-] or Ctrl-x to exit this shell
icroPython v1.2
Traceback (most recent call last):
  File "<stdin>", line 1
SyntaxError: invalid syntax
>>> MicroPython v1.2

As you can see, if I recall the last command from history, it looks like the welcome message has been sent to the buffer.

The only way I found to not have this error, is to call mpremote with soft-reset (which is more or less a two times connection):

$ mpremote soft-reset repl
Connected to MicroPython at /dev/ttyACM0
Use Ctrl-] or Ctrl-x to exit this shell
>
MicroPython v1.25.0-preview.57.g9ebdf1b66.dirty on 2025-04-29; ESP32_C6_MINI_1 with ESP32-C6FH4
Type "help()" for more information.
>>>

On this one, nothing is in the command history.

$ idf.py --version
ESP-IDF v5.2.2

My configuration files for the firmware:
$ cat boards/ESP32_C6_MINI1/board.json

{
    "deploy": [
        "../deploy_c6.md"
    ],
    "docs": "",
    "features": [
        "WiFi"
    ],
    "images": [
        "ESP32_C6_MINI_1.jpg"
    ],
    "mcu": "esp32c6",
    "product": "ESP32-C6-MINI-1",
    "thumbnail": "",
    "url": "https://www.espressif.com/sites/default/files/documentation/esp32-c6-mini-1-mini-1u_datasheet_en.pdf",
    "vendor": "Espressif"
}

$ cat boards/ESP32_C6_MINI1/manifest.py

include("$(PORT_DIR)/boards/manifest.py")

$ cat boards/ESP32_C6_MINI1/mpconfigboard.cmake

set(IDF_TARGET esp32c6)

set(SDKCONFIG_DEFAULTS
    boards/sdkconfig.base
    ${SDKCONFIG_IDF_VERSION_SPECIFIC}
    boards/sdkconfig.c6
    boards/sdkconfig.ble
)

set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)

$ cat boards/ESP32_C6_MINI1/mpconfigboard.h

#define MICROPY_HW_BOARD_NAME               "ESP32_C6_MINI_1"
#define MICROPY_HW_MCU_NAME                 "ESP32-C6FH4"
#define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT "ESP32C6MINI1"

#define MICROPY_PY_BLUETOOTH                (0)
#define MICROPY_HW_ENABLE_SDCARD            (0)

#define MICROPY_HW_I2C0_SCL                 (35)
#define MICROPY_HW_I2C0_SDA                 (33)

#define MICROPY_HW_SPI1_MOSI                (11)
#define MICROPY_HW_SPI1_MISO                (9)
#define MICROPY_HW_SPI1_SCK                 (7)

$ cat boards/ESP32_C6_MINI1/sdkconfig.board

# CONFIG_ESPTOOLPY_FLASHMODE_QIO=y
# CONFIG_ESPTOOLPY_FLASHFREQ_80M=y
# LWIP
CONFIG_LWIP_LOCAL_HOSTNAME="ESP32C6MINI1"
# end of LWIP

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'Traceback (most recent call last): File "<stdin>", line 1 SyntaxError: invalid syntax' on first connection with ESP32-C6-MINI-1 #17208

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MicroPython

'Traceback (most recent call last): File "<stdin>", line 1 SyntaxError: invalid syntax' on first connection with ESP32-C6-MINI-1 #17208

Uh oh!

Tico06 Apr 29, 2025

Replies: 0 comments

Tico06
Apr 29, 2025