Electric imp imp API imp.getwifihints() example

getwifihints.device.nut

// Post-reconnection attempt handler 
function reconnect(reason) {
    if (reason != SERVER_CONNECTED) {
        // Reconnection failed, so re-attempt in 1 minute
        imp.wakeup(60, function() {
            server.connect(reconnect, 30);
        });
    }
}

// Force the imp to connect at 2.4GHz even if it previously connected via 5GHz
// Get the imp's current list of known base-stations
local hints = imp.net.getwifihints();
if (hints.channel > 13) {
    server.log(format("Switching BSSID %s from channel %d to channel 1", hints.bssid, hints.channel));
             
    // Stored 'preferred' channel is in the 5GHz band so change to channel 1
    imp.net.setwifihints(hints.bssid, 1);
    
    // Wait for impOS to idle then perform a disconnect/reconnect cycle
    // in order to join the network with the specified BSSID
    imp.onidle(function() {
        server.flush(10);
        server.disconnect();
        server.connect(reconnect, 30);
    }
}