Block with dropdown who's list is populated by Serial port list.

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Adam Bryant

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4:41 AM (2 hours ago) 4:41 AM

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Sorry I am not sure how to word this.

I have a python function that list active serial ports and assigns them to the variable IFACE_1/IFACE_2/IFACE_n

How do I create a block that will create a dropdown menu populated but this list.

//    {
//        "type": "additional_interface_b_init", 
//        "message0": "Initialise aditional Interface B: %1", 
//        "args0": [
//            { "type": "field_dropdown", "name": "NAME", "text": "IFACE_1" },
//            { "type": "field_dropdown", "name": "NAME", "text": "IFACE_2" }
//        ], 
//        "previousStatement": null, 
//        "nextStatement": null, 
//        "colour": 20, 
//    },

//py.forBlock['additional_interface_b_init'] = (block) => {
//    const name = block.getFieldValue('NAME');
//    const port = getInterfaceMapping()[name] || "/dev/ttyUSB0";
//    return `import serial, time\nif 'ifaces' not in globals(): ifaces = {}\nif '${name}' not in ifaces:\n    ifaces['${name}'] = {'ser': serial.Serial('${port}', 9600, timeout=0)}\n    ifaces['${name}']['ser'].write(b'p\\0###Do you byte, when I knock?$$$')\n    time.sleep(0.1)\n`;
//};

I have tried this but it means I have to populate the list first on the assumption that their could be these ports.