Black screen when testing app

App Development
1

Hi,

I’ve tryed to upload hellworld app via Thonny and I got a black screen and this in the log:

MPY: soft reboot
MP boot @42942ms
prepare paths
D (43138): Loading config
C (43151): Start VOBOT v1.2.0 VOBOT-PRD REV2
D (43188) DEV_MON: device monitor started
D (43192): asyncio loop forever
D (43194) DH: Dock Hub Start
init: I2C(0, scl=18, sda=17, freq=80000)
I (43484) BUZZER: buzzer init
~D (43528) CFGPRJ: Project ConfigMgr init
init CH455
init: UART(2, baudrate=19200, bits=8, parity=1, stop=1, tx=8, rx=-1, rts=-1, cts=-1, txbuf=0, rxbuf=129, timeout=0, timeout_char=0)
OEM type (0, 0, 0)
Double buffer 19200
Task exception wasn’t retrieved
future: coro= <generator object ‘init’ at 3c3bd650>
Traceback (most recent call last):
File “asyncio/core.py”, line 1, in run_until_complete
File “variants/dock_hub/init.py”, line 55, in init
File “variants/dock_hub/ui/init.py”, line 122, in init
File “variants/dock_hub/ui/init.py”, line 25, in lvglInit
File “drivers/init.py”, line 90, in init
File “drivers/init.py”, line 46, in initOnBoard
File “drivers/lv_lcd_spi.py”, line 42, in init
MemoryError: memory allocation failed, allocating 1010706792 bytes
~_~~W (93715) DEV_MON: now=1747245030 alloc=129KB free=4031KB
_~~_~~~~

Any idea of where the problem come from? Thanks

2

Hello,

According to your feedback, the problem is:

Solution:
Hard reboot the device: Disconnect the power supply and reconnect it

If you have any questions about the use of the product, please feel free to contact us.

3

You might want to change the documentation here at step g that says to press ctrl d: Getting Started - Vobot Mini Dock