OpenMV MicroPython 13.1.13.4.4. Volledig voorbeeld#
Create Default Config schrijft het onderstaande bestand en opent het. Het is een demo – geen echte apparaatconfiguratie – gebouwd om elk besturingselementtype tegelijk te demonstreren: labels, beide soorten container, alle zeven waardebesturingselementen, de options/values-koppeling, een driewegselectievakje, een hex-spinbox, een invoermasker, een regex, een wachtwoordveld en een uitgeschakeld veld. Lees het naast de referentiepagina’s om elke sleutel in context te zien, en verklein het vervolgens tot de instellingen die je eigen toepassing nodig heeft.
{
"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. Teruglezen#
U hebt deze lay-out gemaakt, dus u kent het pad naar elke waarde. Met de helper find uit het overzicht benoemt u het tabblad en het besturingselement – find doorloopt de tabbalk en elke naamloze groep ertussen:
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"
De Manual Exposure-group heeft een name, dus die is een stap in het pad – en find(config, "Camera", "manual_exposure") leest het selectievakje ervan. De Format-group heeft geen name, dus die is transparant: resolution wordt rechtstreeks vanaf het Camera-tabblad bereikt.
Merk op hoe de combobox met een values-array de opgeslagen waarde teruggeeft ("qvga"), niet het label dat de gebruiker koos ("QVGA") – precies datgene waarop een script wil vertakken.