Move MAX6675 initialisation from mendel.c to temp.c.

Also note a misplaced and misnamed pin.

arduino_1280.h

@@ -6,6 +6,10 @@
 #define	SCK					DIO52
 #define	MISO				DIO50
 #define	MOSI				DIO51
+// TODO: This depends on the board, so this definition is misplaced here,
+//       should be more appropriately named and go to config.h. It's used in
+//       temp.c and simulator.h and defines the Chip Select pin for an eventual
+//       MAX6675 temperature sensor.
 #define	SS					DIO53
 
 // TWI (I2C)

arduino_168_328p.h

@@ -6,6 +6,10 @@
 #define	SCK					DIO13
 #define	MISO				DIO12
 #define	MOSI				DIO11
+// TODO: This depends on the board, so this definition is misplaced here,
+//       should be more appropriately named and go to config.h. It's used in
+//       temp.c and simulator.h and defines the Chip Select pin for an eventual
+//       MAX6675 temperature sensor.
 #define	SS					DIO10
 
 // TWI (I2C)

arduino_32U4.h

@@ -30,6 +30,10 @@
 #define SCK          DIO1
 #define MISO         DIO3
 #define MOSI         DIO2
+// TODO: This depends on the board, so this definition is misplaced here,
+//       should be more appropriately named and go to config.h. It's used in
+//       temp.c and simulator.h and defines the Chip Select pin for an eventual
+//       MAX6675 temperature sensor.
 #define SS           DIO0
 
 // TWI (I2C)

arduino_644.h

@@ -11,6 +11,10 @@
 #define	SCK					DIO7
 #define	MISO				DIO6
 #define	MOSI				DIO5
+// TODO: This depends on the board, so this definition is misplaced here,
+//       should be more appropriately named and go to config.h. It's used in
+//       temp.c and simulator.h and defines the Chip Select pin for an eventual
+//       MAX6675 temperature sensor.
 #define	SS					DIO4
 
 // TWI (I2C)

arduino_usb1286.h

@@ -11,6 +11,10 @@
 #define SCK            DIO9
 #define MISO           DIO11
 #define MOSI           DIO10
+// TODO: This depends on the board, so this definition is misplaced here,
+//       should be more appropriately named and go to config.h. It's used in
+//       temp.c and simulator.h and defines the Chip Select pin for an eventual
+//       MAX6675 temperature sensor.
 #define SS             DIO8
 
 

arduino_usb1287.h

@@ -2,6 +2,10 @@
 #define	SCK					DIO9
 #define	MISO				DIO11
 #define	MOSI				DIO10
+// TODO: This depends on the board, so this definition is misplaced here,
+//       should be more appropriately named and go to config.h. It's used in
+//       temp.c and simulator.h and defines the Chip Select pin for an eventual
+//       MAX6675 temperature sensor.
 #define	SS					DIO8
 
 

mendel.c

@@ -184,7 +184,6 @@ void io_init(void) {
 		WRITE(SCK, 0);				SET_OUTPUT(SCK);
 		WRITE(MOSI, 1);				SET_OUTPUT(MOSI);
 		WRITE(MISO, 1);				SET_INPUT(MISO);
-		WRITE(SS, 1);					SET_OUTPUT(SS);
 	#endif
 
 	#ifdef TEMP_INTERCOM

temp.c

@@ -73,16 +73,17 @@ struct {
 	uint16_t					next_read_time; ///< how long until we can read this sensor again?
 } temp_sensors_runtime[NUM_TEMP_SENSORS];
 
-/// set up temp sensors. Currently only the 'intercom' sensor needs initialisation.
+/// Set up temp sensors.
 void temp_init() {
 	temp_sensor_t i;
 	for (i = 0; i < NUM_TEMP_SENSORS; i++) {
 		switch(temp_sensors[i].temp_type) {
-		#ifdef	TEMP_MAX6675
+      #ifdef TEMP_MAX6675
-			// initialised when read
+        case TT_MAX6675:
-/*			case TT_MAX6675:
+          WRITE(SS, 1); // Turn sensor off.
-				break;*/
+          SET_OUTPUT(SS);
-		#endif
+          // Intentionally no break, we might have more than one sensor type.
+      #endif
 
 		#ifdef	TEMP_THERMISTOR
 			// handled by analog_init()