ARM: enable temperature control.

Postponed until now to allow better testing of heaters earlier.

Also made pid_init() to handle all heaters at once.

heater-arm.c

@@ -173,9 +173,7 @@ void heater_init() {
   #include "config_wrapper.h"
   #undef DEFINE_HEATER
 
-#if 0
-  pid_init(i);
-#endif /* 0 */
+  pid_init();
 }
 
 /** Set PWM output.

heater-avr.c

@@ -191,7 +191,6 @@ void heater_init() {
 			}
 		}
 
-    pid_init(i);
 	}
 
 	// set all heater pins to output
@@ -201,6 +200,8 @@ void heater_init() {
     WRITE(pin, invert ? 1 : 0);
   #include "config_wrapper.h"
   #undef DEFINE_HEATER
+
+  pid_init();
 }
 
 /** \brief manually set PWM output

heater.c

@@ -78,8 +78,10 @@ heater_runtime_t heaters_runtime[NUM_HEATERS];
 
   \param i Index of the heater to initialise by Teacup numbering.
 */
-void pid_init(heater_t i) {
+void pid_init() {
+  uint8_t i;
 
+  for (i = 0; i < NUM_HEATERS; i++) {
     #ifdef HEATER_SANITY_CHECK
       // 0 is a "sane" temperature when we're trying to cool down.
       heaters_runtime[i].sane_temperature = 0;
@@ -107,6 +109,7 @@ void pid_init(heater_t i) {
         heaters_pid[i].i_limit = DEFAULT_I_LIMIT;
       }
     #endif /* BANG_BANG */
+  }
 }
 
 /** \brief run heater PID algorithm

heater.h

@@ -69,7 +69,7 @@ typedef struct {
 extern heater_runtime_t heaters_runtime[];
 
 void heater_init(void);
-void pid_init(heater_t index);
+void pid_init(void);
 
 void heater_set(heater_t index, uint8_t value);
 void heater_tick(heater_t h, temp_type_t type, uint16_t current_temp, uint16_t target_temp);

temp.c

@@ -122,6 +122,7 @@ void temp_init() {
 /// called every 10ms from clock.c - check all temp sensors that are ready for checking
 void temp_sensor_tick() {
 	temp_sensor_t i = 0;
+
 	for (; i < NUM_TEMP_SENSORS; i++) {
 		if (temp_sensors_runtime[i].next_read_time) {
 			temp_sensors_runtime[i].next_read_time--;
@@ -297,9 +298,7 @@ void temp_sensor_tick() {
 		}
 
 		if (temp_sensors[i].heater < NUM_HEATERS) {
-      #ifndef __ARMEL_NOTYET__
 			heater_tick(temp_sensors[i].heater, temp_sensors[i].temp_type, temp_sensors_runtime[i].last_read_temp, temp_sensors_runtime[i].target_temp);
-      #endif /* __ARMEL_NOTYET__ */
 		}
 
     if (DEBUG_PID && (debug_flags & DEBUG_PID))