OpenMV MicroPython 13.1.13.4.4. Contoh lengkap#
Create Default Config menulis file di bawah ini dan membukanya. Ini adalah demo -- bukan konfigurasi perangkat sungguhan -- dibuat untuk menguji setiap jenis kontrol sekaligus: label, kedua jenis kontainer, ketujuh kontrol nilai, pemetaan options/values, checkbox tristate, spinbox heksa, input mask, regex, kolom kata sandi, dan kolom yang dinonaktifkan. Bacalah bersama halaman referensi untuk melihat setiap kunci dalam konteksnya, lalu pangkas menjadi pengaturan yang dibutuhkan aplikasi Anda sendiri.
{
"title": "Camera Settings",
"controls": [
{
"type": "label",
"align": "center",
"text": "<b>This is a demo configuration.</b><br/>The controls below are examples that show off every setting type you can build — they are <i>not</i> a real device config. Replace them with the controls your own application needs, then edit the values, click <b>Save</b>, and read them back in your script with <code>json.load()</code>. See the <a href='https://docs.openmv.io'>documentation</a> for details."
},
{
"type": "tabs",
"tab_position": "north",
"tabs": [
{
"title": "Camera",
"tooltip": "Sensor and capture settings",
"controls": [
{ "type": "label", "text": "<b>Image capture</b>" },
{
"type": "group",
"title": "Manual Exposure",
"checkable": true,
"name": "manual_exposure",
"value": false,
"controls": [
{ "type": "slider", "name": "exposure_us", "label": "Exposure", "value": 10000, "min": 0, "max": 33000, "step": 100, "suffix": " us", "ticks": 5500, "tooltip": "Shutter time in microseconds" },
{ "type": "slider", "name": "gain_db", "label": "Gain", "value": 8, "min": 0, "max": 24, "suffix": " dB", "ticks": 4 }
]
},
{
"type": "group",
"title": "Format",
"controls": [
{ "type": "combobox", "name": "resolution", "label": "Resolution", "value": "qvga", "options": ["QQVGA", "QVGA", "VGA"], "values": ["qqvga", "qvga", "vga"] },
{ "type": "combobox", "name": "pixformat", "label": "Pixel Format", "value": 1, "options": ["Grayscale", "RGB565"] },
{ "type": "checkbox", "name": "h_mirror", "label": "Horizontal Mirror", "value": false },
{ "type": "checkbox", "name": "v_flip", "label": "Vertical Flip", "value": false },
{ "type": "slider", "name": "digital_zoom", "label": "Digital Zoom", "value": 1, "min": 1, "max": 8, "prefix": "x", "ticks": 1 }
]
}
]
},
{
"title": "Processing",
"tooltip": "Detection and overlays",
"controls": [
{
"type": "group",
"title": "Detection",
"controls": [
{ "type": "radio", "name": "mode", "label": "Mode", "value": "idle", "options": ["Idle", "Track", "Record"], "values": ["idle", "track", "record"], "orientation": "horizontal" },
{ "type": "slider", "name": "threshold", "label": "<b>Threshold</b>", "value": 50, "min": 0, "max": 100, "suffix": " %", "ticks": 25 },
{ "type": "spinbox", "name": "min_area", "label": "Min Area", "value": 100, "min": 0, "max": 10000, "suffix": " px", "special_value_text": "Off", "group_separator": true },
{ "type": "doublespinbox", "name": "sensitivity", "label": "Sensitivity", "value": 50, "min": 0, "max": 100, "step": 0.5, "decimals": 1, "suffix": " %", "special_value_text": "Auto" },
{ "type": "checkbox", "name": "draw_overlays", "label": "Draw Overlays", "value": true }
]
},
{
"type": "group",
"title": "Recording",
"controls": [
{ "type": "radio", "name": "quality", "label": "Quality", "value": 1, "options": ["Low", "Medium", "High"] },
{ "type": "checkbox", "name": "capture_mode", "label": "Capture (off / single / continuous)", "tristate": true, "value": 1 }
]
}
]
},
{
"title": "Network",
"tooltip": "Wi-Fi and server",
"controls": [
{ "type": "label", "text": "<i>Network configuration</i>" },
{
"type": "group",
"title": "Wi-Fi",
"checkable": true,
"name": "wifi_enabled",
"value": true,
"controls": [
{ "type": "lineedit", "name": "wifi_ssid", "label": "SSID", "value": "", "placeholder": "Network name", "max_length": 32, "clear_button": true },
{ "type": "lineedit", "name": "wifi_password", "label": "Password", "value": "", "password": true, "clear_button": true },
{ "type": "lineedit", "name": "static_ip", "label": "Static IP", "value": "192.168.001.100", "mask": "000.000.000.000;_", "tooltip": "Set to 0.0.0.0 for DHCP" }
]
},
{
"type": "group",
"title": "Server",
"controls": [
{ "type": "spinbox", "name": "server_port", "label": "Port", "value": 8080, "min": 0, "max": 65535, "group_separator": true },
{ "type": "lineedit", "name": "hostname", "label": "Hostname", "value": "openmv-cam", "regex": "[A-Za-z0-9-]+", "placeholder": "letters, digits, dashes", "clear_button": true }
]
}
]
},
{
"title": "System",
"tooltip": "Device and power",
"controls": [
{
"type": "group",
"title": "Device",
"controls": [
{ "type": "lineedit", "name": "device_name", "label": "Device Name", "value": "openmv-cam", "clear_button": true },
{ "type": "combobox", "name": "led", "label": "LED", "value": 0, "options": ["Off", "Red", "Green", "Blue"] },
{ "type": "spinbox", "name": "i2c_address", "label": "I2C Address", "value": 48, "min": 0, "max": 255, "base": 16, "prefix": "0x" },
{ "type": "lineedit", "name": "firmware", "label": "Firmware", "value": "4.5.0", "enabled": false }
]
},
{
"type": "group",
"title": "Power",
"controls": [
{ "type": "radio", "name": "power_mode", "label": "Power Mode", "value": "balanced", "options": ["Performance", "Balanced", "Low Power"], "values": ["perf", "balanced", "low"] },
{ "type": "slider", "name": "led_brightness", "label": "LED Brightness", "value": 80, "min": 0, "max": 100, "suffix": " %", "ticks": 20 }
]
},
{
"type": "group",
"title": "Storage",
"controls": [
{ "type": "doublespinbox", "name": "storage_limit", "label": "Storage Limit", "value": 1024.5, "min": 0, "max": 65536, "step": 0.5, "decimals": 1, "prefix": "max ", "suffix": " MB", "group_separator": true }
]
}
]
}
]
},
{
"type": "label",
"align": "right",
"text": "<i>Edit the values, then click Save.</i>"
}
]
}
13.1.13.4.4.1. Membacanya kembali#
Anda yang membuat tata letak ini, jadi Anda tahu jalur ke setiap nilai. Dengan bantuan find dari ikhtisar, sebutkan tab dan kontrolnya -- find menelusuri deretan tab dan grup tak bernama apa pun di antaranya:
enabled = find(config, "Camera", "manual_exposure")["value"] # the group's checkbox
exposure = find(config, "Camera", "manual_exposure", "exposure_us")["value"] # 10000
resolution = find(config, "Camera", "resolution")["value"] # "qvga"
Group Manual Exposure memiliki name, sehingga menjadi satu langkah dalam jalur -- dan find(config, "Camera", "manual_exposure") membaca checkbox-nya. Group Format tidak memiliki name, sehingga transparan: resolution dicapai langsung dari tab Camera.
Perhatikan bagaimana combobox dengan array values mengembalikan nilai tersimpan ("qvga"), bukan label yang dipilih pengguna ("QVGA") -- persis seperti yang ingin dijadikan dasar percabangan oleh sebuah skrip.