Frage zu CAN-Bricklet Performance

[julius1290]

Hallo zusammen,

ich versuche momentan, Daten über das CAN-Bricklet V2 zu senden. Grundlegend funktioniert das auch gut, allerdings komme ich bei Nutzung der API immer wieder in eine Leistungsgrenze, die bei circa 120 Frames/Sekunde liegt.

Folgendes Setup verwende ich dabei:

• ESP32 Brick
• 2x CAN Bricklet V2 (einer sendet, einer liest)
• Nutzung der JavaScript oder Python API unter Verwendung eines modifizierten Beispiels (Code weiter unten)

Falls ich etwas übersehen habe, bin ich über jede Hilfe dankbar. 

Viele Grüße

 

var Tinkerforge = require('tinkerforge');

var HOST = '10.0.0.1';
var PORT = 4223;
var UID = 'XXXX'; // Change XYZ to the UID of your CAN Bricklet 2.0

var ipcon = new Tinkerforge.IPConnection(); // Create IP connection
var can = new Tinkerforge.BrickletCANV2(UID, ipcon); // Create device object


  
function sleep(ms) {
    return new Promise((resolve) => {
      setTimeout(resolve, ms);
    });
}

ipcon.connect(HOST, PORT,
    function (error) {
        console.log('Error: ' + error);
    }

); // Connect to brickd
// Don't use device before ipcon is connected

ipcon.on(Tinkerforge.IPConnection.CALLBACK_CONNECTED,
    async function (connectReason) {
        // Configure transceiver for loopback mode
        can.setTransceiverConfiguration(125000, 625,
                                        0);

        // Enable frame read callback
        can.setFrameReadCallbackConfiguration(false);

        let counter = 0;
        // Write standard data frame with identifier 1742 and 3 bytes of data
        while (true) {
        
        can.writeFrame(Tinkerforge.BrickletCANV2.FRAME_TYPE_STANDARD_DATA, 1, [counter, 23, 17]);
        console.log(counter);
        counter++;
        await sleep(1)
        if (counter == 255)
            counter = 0
        
        }
    }
);

// Register frame read callback
can.on(Tinkerforge.BrickletCANV2.CALLBACK_FRAME_READ,
    // Callback function for frame read callback
    function (frameType, identifier, data) {
        if(frameType === Tinkerforge.BrickletCANV2.FRAME_TYPE_STANDARD_DATA) {
            console.log('Frame Type: Standard Data');
        }
        else if(frameType === Tinkerforge.BrickletCANV2.FRAME_TYPE_STANDARD_REMOTE) {
            console.log('Frame Type: Standard Remote');
        }
        else if(frameType === Tinkerforge.BrickletCANV2.FRAME_TYPE_EXTENDED_DATA) {
            console.log('Frame Type: Extended Data');
        }
        else if(frameType === Tinkerforge.BrickletCANV2.FRAME_TYPE_EXTENDED_REMOTE) {
            console.log('Frame Type: Extended Remote');
        }

        console.log('Identifier: ' + identifier);

        var str = 'Data (Length: ' + data.length  + '):';

        for (var i = 0; i < data.length  && i < 8; ++i) {
            str += ' ' + data[i];
        }

        console.log(str);
        console.log();
    }
);

console.log('Press key to exit');
process.stdin.on('data',
    function (data) {
        can.setFrameReadCallbackConfiguration(false);

        ipcon.disconnect();
        process.exit(0);
    }
);