nearly feature-complete

Signed-off-by: Sean Cross <sean@xobs.io>

css/theme/teardown19.css

@@ -23,13 +23,14 @@ body {
 .reveal .footer {
     position: absolute;
     bottom: 1em;
-    right: 2em;
+    right: 4em;
     text-align: right;
-    font-size: 0.5em;
+    font-size: 0.75em;
     width: 100%;
     height: 96px;
-    /*background-image: url("lca2019-logo.svg");*/
+    background-image: url("teardown2019-logo.svg");
     background-repeat: no-repeat;
+    background-position: right;
     display: flex;
     justify-content: flex-end;
     align-items: flex-end;

index.html

@@ -81,8 +81,8 @@
 	<div class="reveal">
 		<div class="footer">
 			<a class="url" href="https://p.xobs.io/td19/">p.xobs.io/td19</a>
-			<span class="theme">Teardown 2019</span><span class="hashtag"> | #teardown2019</span><span class="twitter"> |
+			<span class="theme">Teardown 2019</span><span class="hashtag"> | #teardown</span><span class="twitter"> |
-				@teardown</span>
+				@crowd_supply</span>
 		</div>
 		<div class="slides">
 			<section>
@@ -93,7 +93,7 @@
 				</p>
 			</section>
 
-			<section data-background-image="css/theme/lca2019-title-bg-transparent.svg">
+			<section data-background-image="css/theme/teardown2019-title-bg-transparent.svg">
 				<h1>Fomu: An FPGA in your USB Port</h1>
 				<h4>A whirlwind introduction to Fomu; a workshop in three levels</h4>
 				<p align="right">
@@ -348,6 +348,11 @@
 					</p> -->
 				</section>
 
+                <section>
+                    <h2>Misleading Datasheets</h2>
+                    <img data-src="img/xtal-datasheet-icon.jpg" alt="Footprint from Crystal">
+                </section>
+
                 <section>
 					<h2>What modifications does it have?</h2>
 					<ul>
@@ -650,6 +655,72 @@ Value at 10000000: 12345678
 $ </code></pre>
                 </section>
 
+                <section>
+                    <h2>Adding Hardware</h2>
+                    <img data-src="img/ice40-rgb.jpg" alt="Schematic of RGB block">
+                </section>
+
+                <section>
+                    <h2>Technology Library Reference</h2>
+                    <pre><code class="verilog">// Verilog Instantiation
+SB_RGBA_DRV RGBA_DRIVER (
+.CURREN(ENABLE_CURR),
+.RGBLEDEN(ENABLE_RGBDRV),
+.RGB0PWM(RGB0),
+.RGB1PWM(RGB1),
+.RGB2PWM(RGB2),
+.RGB0(LED0),
+.RGB1(LED1),
+.RGB2(LED2)
+);
+defparam RGBA_DRIVER.CURRENT_MODE = "0b0";
+defparam RGBA_DRIVER.RGB0_CURRENT = "0b111111";
+defparam RGBA_DRIVER.RGB1_CURRENT = "0b111111" ;
+defparam RGBA_DRIVER.RGB2_CURRENT = "0b111111";</code></pre>
+<p>SBTICETechnologyLibrary201504.pdf page 147</p>
+                </section>
+                <section>
+                    <h2>RGB Block</h2>
+                    <pre><code class="python" style="font-size: 18px; line-height: 22px">class FomuRGB(Module, AutoCSR):
+    def __init__(self, pads):
+        self.output = CSRStorage(3)
+        self.specials += Instance("SB_RGBA_DRV",
+            i_CURREN = 0b1,
+            i_RGBLEDEN = 0b1,
+            i_RGB0PWM = self.output.storage[0],
+            i_RGB1PWM = self.output.storage[1],
+            i_RGB2PWM = self.output.storage[2],
+            o_RGB0 = pads.r,
+            o_RGB1 = pads.g,
+            o_RGB2 = pads.b,
+            p_CURRENT_MODE = "0b1",
+            p_RGB0_CURRENT = "0b000011",
+            p_RGB1_CURRENT = "0b000011",
+            p_RGB2_CURRENT = "0b000011",
+        )</code></pre>
+                </section>
+    
+                <section>
+                    <h2>Instantiating FomuRGB</h2>
+                    <pre><code class="diff">@@ -55,6 +75,10 @@ class BaseSoC(SoCCore):
+                 with_ctrl=False,
+                 **kwargs)
+
++        # Add the LED driver block
++        led_pads = platform.request("rgb_led")
++        self.submodules.rgb = FomuRGB(led_pads)
++
+         # UP5K has single port RAM....
+         # Use this as CPU RAM.
+         spram_size = 128*1024</code></pre>
+                </section>
+
+                <section>
+                    <h2>Interacting with the CSR</h2>
+                    <pre><code>csr_register,rgb_output,0xe0006800,1,rw</code></pre>
+                    <p>From <code>test/csr.csv</code></p>
+                </section>
+
                 <section>
 					<h2>VexRiscv</h2>
 				</section>