Add LM75 DFA model

include/driver/lm75.h

@@ -16,6 +16,8 @@ class LM75 {
 		unsigned int getHyst();
 		void setOS(unsigned char os);
 		void setHyst(unsigned char hyst);
+		void init();
+		void shutdown();
 };
 
 extern LM75 lm75;

model/driver/lm75.dfa

+instance: lm75
+
+parameters:
+  - os
+  - hyst
+
+states:
+  - UNINITIALIZED
+  - POWEROFF
+  - ACTIVE
+
+transition:
+  shutdown:
+    src: [UNINITIALIZED, POWEROFF, ACTIVE]
+    dst: POWEROFF
+  init:
+    src: [UNINITIALIZED, POWEROFF, ACTIVE]
+    dst: ACTIVE
+  getTemp:
+    src: [ACTIVE]
+    dst: ACTIVE
+  setOS:
+    src: [ACTIVE]
+    dst: ACTIVE
+    arguments:
+      - name: os
+        values: [30, 90]
+        parameter: os
+  setHyst:
+    src: [ACTIVE]
+    dst: ACTIVE
+    arguments:
+      - name: hyst
+        values: [29, 60]
+        parameter: hyst

src/driver/lm75.cc

@@ -49,4 +49,18 @@ void LM75::setHyst(unsigned char hyst)
 	i2c.xmit(address, 3, txbuf, 0, rxbuf);
 }
 
+void LM75::init()
+{
+	txbuf[0] = 0x01;
+	txbuf[1] = 0x00;
+	i2c.xmit(address, 2, txbuf, 0, rxbuf);
+}
+
+void LM75::shutdown()
+{
+	txbuf[0] = 0x01;
+	txbuf[1] = 0x01;
+	i2c.xmit(address, 2, txbuf, 0, rxbuf);
+}
+
 LM75 lm75(0x48);