Created current fuse logic

firmware/src/hw/fuse.cpp

@@ -0,0 +1,67 @@
+/**** Includes ****/
+#include "../utils/utils.h"
+#include "../utils/interpolate.h"
+#include "fuse.h"
+
+using namespace hw;
+
+/**** Private definitions ****/
+/**** Private constants ****/
+/**** Private variables ****/
+/**** Private function declarations ****/
+
+/**** Public function definitions ****/
+hw::Fuse::Fuse(bsp::AnalogIn* ain_ch)
+{
+	this->hold_current = 0;
+	this->trip_cycles = 0;
+	this->warning = 0;
+	this->fault = 0;
+	this->cooldown_counter = 0;
+	this->cooldown_cycles = 0;
+	this->retry_cnt = 0;
+}
+
+hw::Fuse::~Fuse(void)
+{
+	return;
+}
+
+void hw::Fuse::update(void)
+{
+	// Under threshold
+	if(this->ain_ch->last_read <= this->hold_current)
+	{
+		// Clear warning flag
+		this->warning = 0;
+		
+		// OC energy counter
+		if(this->oc_counter > 0) this->oc_counter--;
+		
+		// Cool down fuse
+		if(this->cooldown_counter > 0) this->cooldown_counter--;
+		
+		// Auto reset logic
+		if((this->fault)&&(this->cooldown_counter==0))
+		{
+			this->fault = 0;
+			this->retry_cnt = util::sat_add(this->retry_cnt, 1);
+		};
+		return;
+	};
+
+	// Over current condition
+	this->warning = 1;
+		
+	// PC energy counter
+	this->oc_counter = util::sat_add(this->oc_counter, 1);
+		
+	// Check for trip threshold
+	if(this->oc_counter < this->trip_cycles) return;
+		
+	// Trip fuse
+	this->fault = 1;
+	this->cooldown_counter = this->cooldown_cycles;
+}
+
+/**** Private function definitions ****/