nodebots-interchange
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Tool to build custom backpack firmwares to make devices I2C compliant
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<a href="index.html">All files</a> interchange_client.js
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<div class='fl pad1y space-right2'>
<span class="strong">32.88% </span>
<span class="quiet">Statements</span>
<span class='fraction'>24/73</span>
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<div class='fl pad1y space-right2'>
<span class="strong">0% </span>
<span class="quiet">Branches</span>
<span class='fraction'>0/12</span>
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<span class="strong">5.26% </span>
<span class="quiet">Functions</span>
<span class='fraction'>1/19</span>
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<div class='fl pad1y space-right2'>
<span class="strong">32.88% </span>
<span class="quiet">Lines</span>
<span class='fraction'>24/73</span>
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Press <em>n</em> or <em>j</em> to go to the next uncovered block, <em>b</em>, <em>p</em> or <em>k</em> for the previous block.
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">const async = require('async');
const colors = require('colors');
const events = require('events');
const parsers = require('serialport').parsers; // used for parser
const SerialPort = require('serialport');
const ReadLine = require('@serialport/parser-readline');
const util = require('util');
const NL = 0x0a;
function Client() {
// events.EventEmitter.call(this);
let port_address = null;
const sp_open = false;
let sp_timeout = null;
let current_state = null;
let current_callback = null;
const state_write = <span class="fstat-no" title="function not covered" >fu</span>nction(data) {
// just passes the data up to anything that wants to listen for it.
<span class="cstat-no" title="statement not covered" > console.log(data);</span>
<span class="cstat-no" title="statement not covered" > this.emit('data', data);</span>
// clear any callbacks
<span class="cstat-no" title="statement not covered" > current_callback = null;</span>
}.bind(this);
const state_init = <span class="fstat-no" title="function not covered" >fu</span>nction(data) {
// initialising the connection, waits for the magic chars to come out
<span class="cstat-no" title="statement not covered" > if (data.indexOf('>>') >=0) {</span>
// now we move to just writing anything from the serial line out.
<span class="cstat-no" title="statement not covered" > current_state = state_write;</span>
<span class="cstat-no" title="statement not covered" > this.emit('ready');</span>
}
}.bind(this);
const state_dump = <span class="fstat-no" title="function not covered" >fu</span>nction(data) {
// waits for the state dump to come back and then parses the json and
//
<span class="cstat-no" title="statement not covered" > current_state = state_write;</span>
<span class="cstat-no" title="statement not covered" > try {</span>
const dump = <span class="cstat-no" title="statement not covered" >JSON.parse(data);</span>
} catch (err) {
<span class="cstat-no" title="statement not covered" > if (current_callback != null) {</span>
<span class="cstat-no" title="statement not covered" > current_callback(e);</span>
}
}
<span class="cstat-no" title="statement not covered" > if (current_callback != null) {</span>
<span class="cstat-no" title="statement not covered" > current_callback(null, dump);</span>
}
};
current_state = state_init;
this.serialport = null;
this.get_info = <span class="fstat-no" title="function not covered" >fu</span>nction(cb) {
<span class="cstat-no" title="statement not covered" > this.serialport.write('DUMP\n');</span>
<span class="cstat-no" title="statement not covered" > current_state = state_dump;</span>
<span class="cstat-no" title="statement not covered" > current_callback = cb;</span>
};
this.set_details = <span class="fstat-no" title="function not covered" >fu</span>nction(data, cb) {
<span class="cstat-no" title="statement not covered" > console.info('Setting firmware details'.magenta);</span>
<span class="cstat-no" title="statement not covered" > current_state = state_write;</span>
// TODO refactor this into a promise chain instead.
<span class="cstat-no" title="statement not covered" > async.series([</span>
<span class="fstat-no" title="function not covered" > fu</span>nction(callback) {
<span class="cstat-no" title="statement not covered" > this.serialport.write('CLR\n');</span>
<span class="cstat-no" title="statement not covered" > callback(null, 'erase');</span>
}.bind(this),
<span class="fstat-no" title="function not covered" > fu</span>nction(callback) {
const s = <span class="cstat-no" title="statement not covered" >'FID ' + data.firmwareID + '\n';</span>
<span class="cstat-no" title="statement not covered" > this.serialport.write(s);</span>
<span class="cstat-no" title="statement not covered" > callback(null, 'FID');</span>
}.bind(this),
<span class="fstat-no" title="function not covered" > fu</span>nction(callback) {
<span class="cstat-no" title="statement not covered" > this.serialport.write('CID ' + data.creatorID + '\n');</span>
<span class="cstat-no" title="statement not covered" > callback(null, 'CID');</span>
}.bind(this),
<span class="fstat-no" title="function not covered" > fu</span>nction(callback) {
<span class="cstat-no" title="statement not covered" > this.serialport.write('I2C ' + data.i2c_address + ' ' + data.use_custom_address + '\n');</span>
// this is a hack - blame @jacobrosenthal as I pinched it
// for how uploads are managed in STK500 loader.
// Basically delay return on this just to give it time to
// finish executing or the serial port will get closed.
<span class="cstat-no" title="statement not covered" > setTimeout(<span class="fstat-no" title="function not covered" >fu</span>nction() {</span>
<span class="cstat-no" title="statement not covered" > callback(null, 'I2C')</span>
}, 20);
}.bind(this)
],
<span class="fstat-no" title="function not covered" > fu</span>nction(err, results) {
<span class="cstat-no" title="statement not covered" > cb();</span>
});
};
this.close = <span class="fstat-no" title="function not covered" >fu</span>nction() {
<span class="cstat-no" title="statement not covered" > this.serialport.close();</span>
};
Object.defineProperties(this, {
'port': {
<span class="fstat-no" title="function not covered" > se</span>t(p) {
<span class="cstat-no" title="statement not covered" > if (p != undefined) {</span>
// set the port here.
<span class="cstat-no" title="statement not covered" > this.serialport = new SerialPort(p, {</span>
baudRate: 9600
});
const parser = <span class="cstat-no" title="statement not covered" >new ReadLine();</span>
<span class="cstat-no" title="statement not covered" > this.serialport.pipe(parser);</span>
<span class="cstat-no" title="statement not covered" > sp_timeout = setTimeout(<span class="fstat-no" title="function not covered" >fu</span>nction() {</span>
<span class="cstat-no" title="statement not covered" > if (current_state == state_init) {</span>
<span class="cstat-no" title="statement not covered" > this.emit('error', new Error('Serialport timeout'));</span>
}
}.bind(this), 4000);
// create handlers for the various serial port actions.
<span class="cstat-no" title="statement not covered" > this.serialport.on('open', <span class="fstat-no" title="function not covered" >fu</span>nction(error) {</span>
<span class="cstat-no" title="statement not covered" > if (error) {</span>
<span class="cstat-no" title="statement not covered" > console.error(error);</span>
}
<span class="cstat-no" title="statement not covered" > port_address = p;</span>
<span class="cstat-no" title="statement not covered" > this.emit('connected');</span>
}.bind(this));
<span class="cstat-no" title="statement not covered" > this.serialport.on('error', <span class="fstat-no" title="function not covered" >fu</span>nction(err) {</span>
<span class="cstat-no" title="statement not covered" > console.error('error');</span>
<span class="cstat-no" title="statement not covered" > this.emit('error', err);</span>
}.bind(this));
<span class="cstat-no" title="statement not covered" > this.serialport.on('data', <span class="fstat-no" title="function not covered" >fu</span>nction(data) {</span>
<span class="cstat-no" title="statement not covered" > current_state(data);</span>
}.bind(this));
}
},
<span class="fstat-no" title="function not covered" > ge</span>t() {
<span class="cstat-no" title="statement not covered" > return port_address;</span>
}
}
});
}
util.inherits(Client, events.EventEmitter);
module.exports.Client = Client;
</pre></td></tr>
</table></pre>
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