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Commit 4bd51afe authored by Sam Calisch's avatar Sam Calisch
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added second graph

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index.html
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− 80
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......@@ -7,6 +7,10 @@
<meta charset="utf-8">
<style>
body {
font: 14px sans-serif;
}
text {
font: 10px sans-serif;
}
.axis path,
......@@ -23,96 +27,109 @@ body {
</style>
<body>
<script src="d3.v3.min.js"></script>
<script>
var margin = {top: 20, right: 20, bottom: 30, left: 40},
<h1>Ring Oscillators</h1>
<p>We started this page to catalog tests of speed for a variety of microprocessors and electronics modules. Here we define speed as how fast information can transit from external electronics into the core where microcode is running and back out again. A good way to test this is by constructing a ring oscillator, which simply sends token back and forth, producing a waveform that can be measured with an oscilloscope.</p>
<h2>GPIO</h2>
<p>To measure speed across a GPIO layer, we use a logic level as out token.</p>
<div id='gpio'></div>
<h2>RF</h2>
<p>To measure speed across a radio link, we use the smallest supported packet.</p>
<div id='rf'></div>
<script>
function make_graph(div_id,json_key,axis_labels,use_khz){
var margin = {top: 20, right: 20, bottom: 30, left: 40},
width = 960 - margin.left - margin.right,
height = 600 - margin.top - margin.bottom;
var x = d3.scale.linear().range([0, width]);
var y = d3.scale.linear().range([height, 0]);
var color = d3.scale.category10();
var xAxis = d3.svg.axis().scale(x).orient("bottom").tickSize(-height,0);
var yAxis = d3.svg.axis().scale(y).orient("left").tickSize(-width,0);
var svg = d3.select(div_id).append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
d3.json("ring.json", function(error, json) {
if (error) throw error;
data = json[json_key];
console.log(data);
update(data);
});
function update(data) {
var cols = d3.scale.category10();
function period_to_freq(p){
if (use_khz) return 1000./p;
else return 1/p;
}
x.domain([0,d3.max(data, function(d) { return 1.1*d.dev_board_price; })]).nice();
y.domain([0,d3.max(data, function(d) { return 1.1*period_to_freq(d.ring_period); })]).nice();
var node = svg.selectAll("g").data(data).enter().append("g").append("a")
.attr("xlink:href", function(d) { return d.subdirectory_path; });
node.append("circle")
.attr("class", "dot")
.attr("cx", function(d) { return x(d.dev_board_price); })
.attr("cy", function(d) { return y( 1.0*period_to_freq(d.ring_period) ); })
.attr("r", 3.5)
.style("fill",function(d,i){return cols(i);});
node.append("text")
.attr("x", function(d) { return x(d.dev_board_price)+5; })
.attr("y", function(d) { return y( 1.0*period_to_freq(d.ring_period) ); })
.style("font-size","15px")
.style("font-family","sans-serif")
.text(function(d) { return d.name; });
svg.insert("g",":first-child")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.append("text")
.attr("class", "label")
.attr("x", width)
.attr("y", 25)
.style("text-anchor", "end")
.style("font-size","15px")
.text(axis_labels[0]);
svg.insert("g",":first-child")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("class", "label")
.attr("transform", "rotate(-90)")
.attr("y", -25)
.attr("dy", ".2em")
.style("text-anchor", "end")
.style("font-size","15px")
.text(axis_labels[1])
}
var x = d3.scale.linear()
.range([0, width]);
var y = d3.scale.linear()
.range([height, 0]);
var color = d3.scale.category10();
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.tickSize(-height,0);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickSize(-width,0);
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
d3.json("ring.json", function(error, json) {
if (error) throw error;
data = json["tests"];
update(data);
});
function update(data) {
var cols = d3.scale.category10();
x.domain(d3.extent(data, function(d) { return 1.1*d.dev_board_price; })).nice();
y.domain(d3.extent(data, function(d) { return 1.1*1000./d.ring_period; })).nice();
var node = svg.selectAll("g").data(data).enter().append("g").append("a")
.attr("xlink:href", function(d) { return d.subdirectory_path; });
node.append("circle")
.attr("class", "dot")
.attr("cx", function(d) { return x(d.dev_board_price); })
.attr("cy", function(d) { return y( 1000./d.ring_period ); })
.attr("r", 3.5)
.style("fill",function(d,i){return cols(i);});
node.append("text")
.attr("x", function(d) { return x(d.dev_board_price)+5; })
.attr("y", function(d) { return y( 1000./d.ring_period ); })
.style("font-size","15px")
.style("font-family","sans-serif")
.text(function(d) { return d.name; });
svg.insert("g",":first-child")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.append("text")
.attr("class", "label")
.attr("x", width)
.attr("y", 25)
.style("text-anchor", "end")
.style("font-size","15px")
.text("dev board price ($)");
svg.insert("g",":first-child")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("class", "label")
.attr("transform", "rotate(-90)")
.attr("y", -25)
.attr("dy", ".71em")
.style("text-anchor", "end")
.style("font-size","15px")
.text("ring frequency (MHz)")
}
</script>
make_graph("#gpio","gpio",["dev board price ($)", "ring frequency (MHz)"],0)
make_graph("#rf","rf",["dev board price ($)", "ring frequency (kHz)"],1)
</script>
<!--<a href='http://fab.cba.mit.edu/classes/865.15/people/sam.calisch/9/index.html'><img src='img/ring-speed-vs-cost.png'></a>-->
</body>
</html>
\ No newline at end of file
radio/nrf24L01/nrf-ftdi-layout.png → rf/nrf24L01/nrf-ftdi-layout.png
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− 0
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File moved
radio/nrf24L01/nrf-ftdi-ring.c → rf/nrf24L01/nrf-ftdi-ring.c
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radio/nrf24L01/nrf-ftdi-ring.make → rf/nrf24L01/nrf-ftdi-ring.make
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radio/nrf24L01/nrf-ftdi-traces.png → rf/nrf24L01/nrf-ftdi-traces.png
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File moved
radio/nrf24L01/ring.png → rf/nrf24L01/ring.png
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radio/nrf24L01/ring2.png → rf/nrf24L01/ring2.png
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File moved
radio/nrf24L01/serial-monitor.py → rf/nrf24L01/serial-monitor.py
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File moved
radio/nrf24L01/serial.h → rf/nrf24L01/serial.h
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radio/nrf52832/nrf52-rf-ring-2.png → rf/nrf52832/nrf52-rf-ring-2.png
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File moved
radio/nrf52832/nrf52-rf-ring.ino → rf/nrf52832/nrf52-rf-ring.ino
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File moved
radio/nrf52832/nrf52-rf-ring.png → rf/nrf52832/nrf52-rf-ring.png
+ 0
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File moved
radio/nrf52832/radio-modes.png → rf/nrf52832/radio-modes.png
+ 0
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radio/nrf52832/radio-timing.png → rf/nrf52832/radio-timing.png
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File moved
ring.json
+ 17
− 18
View file @ 4bd51afe
......@@ -15,7 +15,7 @@
"name":"nrf52",
"serial_number":"",
"subdirectory_path":"rf/nrf52832",
"dev_board_price":5,
"dev_board_price":5.0,
"dev_board_sales link":"",
"ic_price":0.0,
"ic_sales_link":"",
......@@ -25,14 +25,13 @@
"name":"nrf24L01",
"serial_number":"",
"subdirectory_path":"rf/nrf24L01",
"dev_board_price":4,
"dev_board_price":4.0,
"dev_board_sales link":"",
"ic_price":0.0,
"ic_sales_link":"",
"ring_period":390.0
}
],
"gpio":[
{
"name":"nucleo, mbed",
......@@ -42,7 +41,7 @@
"dev_board_sales link":"",
"ic_price":0.0,
"ic_sales_link":"",
"ring_period":700.0
"ring_period":0.7
},
{
"name":"lpc1768, mbed",
......@@ -52,7 +51,7 @@
"dev_board_sales_link":"",
"ic_price":0.0,
"ic_sales_link":"",
"ring_period":400.0
"ring_period":0.4
},
{
"name":"ATmega32u4, Arduino",
......@@ -62,7 +61,7 @@
"dev_board_sales_link":"",
"ic_price":0.0,
"ic_sales_link":"",
"ring_period":22000.0
"ring_period":22.0
},
{
"name":"ATmega32u4, Port",
......@@ -72,7 +71,7 @@
"dev_board_sales_link":"",
"ic_price":0.0,
"ic_sales_link":"",
"ring_period":2200.0
"ring_period":2.2
},
{
"name":"Teensy, Teensyduino",
......@@ -82,7 +81,7 @@
"dev_board_sales_link":"",
"ic_price":0.0,
"ic_sales_link":"",
"ring_period":5500.0
"ring_period":5.5
},
{
"name":"Teensy, Port",
......@@ -92,7 +91,7 @@
"dev_board_sales_link":"",
"ic_price":0.0,
"ic_sales_link":"",
"ring_period":3500.0
"ring_period":3.5
},
{
"name":"RaspberryPi, PythonGPIO",
......@@ -102,7 +101,7 @@
"dev_board_sales_link":"",
"ic_price":0.0,
"ic_sales_link":"",
"ring_period":10000.0
"ring_period":10.0
},
{
"name":"RaspberryPi, C",
......@@ -112,7 +111,7 @@
"dev_board_sales_link":"",
"ic_price":0.0,
"ic_sales_link":"",
"ring_period":400.0
"ring_period":0.4
},
{
"name":"PSoc 5LP, API",
......@@ -122,7 +121,7 @@
"dev_board_sales_link":"",
"ic_price":0.0,
"ic_sales_link":"",
"ring_period":1200.0
"ring_period":1.2
},
{
"name":"PSoc 5LP, Hardware",
......@@ -132,7 +131,7 @@
"dev_board_sales_link":"",
"ic_price":0.0,
"ic_sales_link":"",
"ring_period":160.0
"ring_period":0.16
},
{
"name":"XMega8E5",
......@@ -142,7 +141,7 @@
"dev_board_sales_link":"",
"ic_price":3.00,
"ic_sales_link":"",
"ring_period":252.0
"ring_period":0.252
},
{
"name":"RPiZero, BCM2835",
......@@ -152,7 +151,7 @@
"dev_board_sales_link":"",
"ic_price":0.00,
"ic_sales_link":"",
"ring_period":350
"ring_period":0.35
},
{
"name":"RPiZero, node rpio",
......@@ -162,7 +161,7 @@
"dev_board_sales_link":"",
"ic_price":0.00,
"ic_sales_link":"",
"ring_period":7648
"ring_period":7.648
},
{
"name":"C.H.I.P. pro, shell",
......@@ -172,7 +171,7 @@
"dev_board_sales_link":"",
"ic_price":0.00,
"ic_sales_link":"",
"ring_period":11000000
"ring_period":11000
},
{
"name":"NRF52",
......@@ -182,7 +181,7 @@
"dev_board_sales_link":"",
"ic_price":3.00,
"ic_sales_link":"",
"ring_period":377
"ring_period":0.377
}
]
}
\ No newline at end of file
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