Add RH2 rev2 strobe

Author: addshore

src/devices/rh2.toit

@@ -22,8 +22,6 @@ class RtkHandheld2Rev2 extends LightbugDevice:
   static I2C-SDA := 0
   static I2C-SCL := 1
   constructor:
-    super "RtkHandheld2 rev2" I2C-SDA I2C-SCL
-  strobe -> Strobe:
-    return NoStrobe // Probably didnt have a strobe, and probably doesnt matter
+    super "RtkHandheld2 rev2" I2C-SDA I2C-SCL --strobe=LegacyStrobe
   messages-supported -> List:
     return RtkHandheld2-MESSAGES

src/devices/strobe.toit

@@ -24,6 +24,26 @@ class StandardStrobe implements Strobe:
   available -> bool:
     return true
 
+  set r/bool g/bool b/bool:
+    pinR.set (if r: 1 else: 0)
+    pinG.set (if g: 1 else: 0)
+    pinB.set (if b: 1 else: 0)
+
+// Used on RH2 rev2 (only?)
+class LegacyStrobe implements Strobe:
+
+  pinR/ gpio.Pin
+  pinG/ gpio.Pin
+  pinB/ gpio.Pin
+
+  constructor:
+    pinR = gpio.Pin 18 --output=true
+    pinG = gpio.Pin 19 --output=true
+    pinB = gpio.Pin 20 --output=true
+
+  available -> bool:
+    return true
+
   set r/bool g/bool b/bool:
     pinR.set (if r: 1 else: 0)
     pinG.set (if g: 1 else: 0)