WIP: Support SQUiXL device by "Unexpected Maker"#85
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jedie wants to merge 1 commit intoMicroPythonOS:mainfrom
Draft
WIP: Support SQUiXL device by "Unexpected Maker"#85jedie wants to merge 1 commit intoMicroPythonOS:mainfrom
jedie wants to merge 1 commit intoMicroPythonOS:mainfrom
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This was referenced Mar 21, 2026
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Display doesn't work: Backlight will be enabled, but doesn't render anything. Init looks like: ``` Starting main.py... sys.version=3.4.0; LVGL (9.3.0) MicroPython (1.25.0) Binding compiled on 2026-03-21 sys.implementation=(name='micropython', version=(1, 25, 0, ''), _machine='Generic ESP32S3 module with Octal-SPIRAM with ESP32S3', _mpy=11014, _build='ESP32_GENERIC_S3-SPIRAM_OCT') Free space on root filesystem: total_space=12517376 / used_space=1712128 / free_space=10805248 bytes RAM: 4650480 free, 1040 allocated, 4651520 total Passing execution over to mpos.main MicroPythonOS 0.9.0 running lib/mpos/main.py unPhone ? (emulated) lilygo_t_display_s3 ? odroid_go ? fri3d_2026 ? SQUiXL ? Detected squixl system, importing mpos.board.squixl squixl.py initialization squixl.py init i2c Bus with: scl=2, sda=1... Scanning I2C bus for devices... Found I2C device at address: 32 ($0X20) Found I2C device at address: 54 ($0X36) Found I2C device at address: 82 ($0X52) Found I2C device at address: 90 ($0X5A) Found I2C device at address: 93 ($0X5D) Create instance of the LCA9555 IO Expander... Writing to TCA9555: reg=0x6, value=0xffff Resetting LCD... Setting LCD backlight ON (BL_EN=0) Screen soft power EN 5V presense sense IO IO MUX - EN is Active LOW, so start it off IO MUX - Set default to I2S - LOW is SD Haptic EN Setting LCD backlight OFF (BL_EN=0) Setting LCD backlight ON (BL_EN=0) squixl.py RGB parallel bus display initialization squixl.py ST7701S() display initialization _st7701s_init.py Send initialization commands to ST7701S... Using custom set_params_func for initialization set_params: cmd=0x11 no params set_params: cmd=0xFF params: 77 01 00 00 10 set_params: cmd=0xC0 params: 3B 00 set_params: cmd=0xC1 params: 0D 02 set_params: cmd=0xC2 params: 21 08 set_params: cmd=0xCD params: 08 set_params: cmd=0xB0 params: 00 11 18 0E 11 06 07 08 07 22 04 12 0F AA 31 18 set_params: cmd=0xB1 params: 00 11 19 0E 12 07 08 08 08 22 04 11 11 A9 32 18 set_params: cmd=0xFF params: 77 01 00 00 11 set_params: cmd=0xB0 params: 60 set_params: cmd=0xB1 params: 30 set_params: cmd=0xB2 params: 87 set_params: cmd=0xB3 params: 80 set_params: cmd=0xB5 params: 49 set_params: cmd=0xB7 params: 85 set_params: cmd=0xB8 params: 21 set_params: cmd=0xC1 params: 78 set_params: cmd=0xC2 params: 78 set_params: cmd=0xE0 params: 00 1B 02 set_params: cmd=0xE1 params: 08 A0 00 00 07 A0 00 00 00 44 44 set_params: cmd=0xE2 params: 11 11 44 44 A0 00 00 EC A0 00 00 set_params: cmd=0xE3 params: 00 00 11 11 set_params: cmd=0xE4 params: 44 44 set_params: cmd=0xE5 params: 0A E9 D8 A0 0C EB D8 A0 0E ED D8 A0 10 EF D8 A0 set_params: cmd=0xE6 params: 00 00 11 11 set_params: cmd=0xE7 params: 44 44 set_params: cmd=0xE8 params: 09 E8 D8 A0 0B EA D8 A0 0D EC D8 A0 0F EE D8 A0 set_params: cmd=0xEB params: 02 00 E4 E4 88 00 40 set_params: cmd=0xEC params: 3C 00 set_params: cmd=0xED params: AB 89 76 54 02 FF FF FF FF FF FF 20 45 67 98 BA set_params: cmd=0xFF params: 77 01 00 00 00 set_params: cmd=0x36 params: 00 set_params: cmd=0x3A params: 66 set_params: cmd=0x21 no params set_params: cmd=0x2A params: 00 00 01 DF set_params: cmd=0x2B params: 00 00 01 DF set_params: cmd=0x29 no params _st7701s_init.py initialization complete squixl.py display.init() squixl.py display.set_rotation() initialization squixl.py lv.init() initialization Detect if VBUS (5V) power source is present: raw_value=0 squixl.get_vbus_present()=False squixl.py initialization complete mounting freezefs_mount_builtin at /builtin. SharedPreferences.load didn't find preferences: [Errno 2] ENOENT [AppearanceManager] Setting primary color: 15769616 [AppearanceManager] Initialized: light_mode=True, primary_color=<lv_color_t> init_rootscreen set resolution to 480x480 at 130 DPI SharedPreferences.load didn't find preferences: [Errno 2] ENOENT AppManager finding apps... WifiService: Auto-connect thread starting AppManager: handling apps got exception: [Errno 2] ENOENT SharedPreferences.load didn't find preferences: [Errno 2] ENOENT SharedPreferences.load didn't find preferences: [Errno 2] ENOENT WifiService: No access points configured, exiting Found launcher com.micropythonos.launcher Foreground app: com.micropythonos.launcher Thread 1070340860: executing script with cwd: builtin/apps/com.micropythonos.launcher/assets/ Thread 1070340860: reading script from file builtin/apps/com.micropythonos.launcher/assets/launcher.py execute_script: reading script_source took 1ms Thread 1070340860: starting script execute_script: compiling script_source took 43ms apps.py execute_script: exec took 14ms Classes: dict_keys(['DisplayMetrics', 'Launcher', 'Activity', 'AppearanceManager', 'AppManager']) Functions: dict_keys([]) Variables: dict_keys(['time', '__name__', '__file__', 'ubinascii', 'math', 'uhashlib', 'lv']) launcher.py onCreate() ```
Contributor
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Sweet! I guess I should click "Convert to draft" since this is a work-in-progress, since it says the display doesn't work yet... I think you'll find a way to make it work :-D If you have some code which does work, like the manufacturer's demo factory app, that often helps in figuring out what's going wrong, comparing registers, settings initialization sequence etc... |
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Display doesn't work: Backlight will be enabled, but doesn't render anything.
Init looks like: