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Warnings.ino
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Warnings.ino
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// Handle warnings
// Constants for type and timing
const byte WARNING_PIN = 23;
const byte WARNING_CLEAR_PIN = 22;
Bounce clear_button(WARNING_CLEAR_PIN, BOUNCE_TIME);
const float LOW_RESOURCE = 0.05;
const float NO_RESOURCE = 0.01;
// Severity levels
const byte WARN_OFF = 0; // Nothing
const byte WARN_WARN = 1; // Hey.
const byte WARN_ALARM = 2;// HEY
const byte WARN_IN_PROGRESS = 10; // Don't go again
// Check for warnings every 1/2 second
Metro warningTimer = Metro(500);
volatile byte warn_level;
// Check function
typedef boolean (*check_func)();
// Struct for warnings
typedef struct {
char message[16];
byte severity;
boolean triggered;
boolean silence;
check_func check;
} KP_Warning;
//
// Define warnings and their severity
KP_Warning warnings[] = {
{"Low fuel ", WARN_WARN, false, false, &low_fuel},
{"Low power ", WARN_WARN, false, false, &low_power},
{"NO POWER ", WARN_ALARM, false, false, &no_power}
};
const int warning_count = sizeof(warnings) / sizeof(warnings[0]);
// Initialize warnings
void warning_init()
{
pinMode(WARNING_CLEAR_PIN, INPUT_PULLUP);
pinMode(WARNING_PIN, OUTPUT);
digitalWrite(WARNING_PIN, HIGH);
}
// Reset silenced warnings
void warning_reset()
{
Serial1.print(0xFE, BYTE);
//Serial1.print(0x01, BYTE);
Serial1.write(0x80); // new line
Serial1.print("Alarm reset");
for(byte i = 0; i < warning_count; i++)
{
warnings[i].silence = false;
warnings[i].triggered = false;
}
}
// Silence silenced warnings
void warning_silence()
{
Serial1.print(0xFE, BYTE);
//Serial1.print(0x01, BYTE);
Serial1.write(0x80); // new line
Serial1.print("Alarm silence");
for(byte i = 0; i < warning_count; i++)
{
warnings[i].silence = true;
}
}
/**
* Check various stuff like if we're still connected to KSP, fuel in the tank, etc.
*/
void warning_check()
{
// This is for bounce
clear_button.update();
;
// SILENCE
if(clear_button.fallingEdge())
{
warn_level == WARN_ALARM? warning_silence() : warning_reset();
warn_level = WARN_OFF;
digitalWrite(WARNING_PIN, HIGH);
}
// If it's not time yet, return
if(!warningTimer.check()) return;
// Don't bother if we're alreading doing one
if(warn_level == WARN_IN_PROGRESS)
{
warning();
return;
}
else if (warn_level == WARN_OFF)
{
Serial1.write(0x80); // new line
Serial1.print(" ");
}
// Check to see if we're connected to KSP
if(KSP.connected())
{
digitalWrite(KSP_CONNECTED_LED, HIGH);
}
else
{
// Turn on connection light
digitalWrite(KSP_CONNECTED_LED, LOW);
// Turn off all status lights
for(byte i = 0; i < light_count; i++)
{
digitalWrite(lights[i].pin, HIGH);
}
// Reset warnings, might be ship changing
warning_reset();
return;
}
for(byte i = 0; i < warning_count; i++)
{
if(warnings[i].silence) continue;
if(!warnings[i].triggered && warnings[i].check())
{
warnings[i].triggered = true;
warn_level = warnings[i].severity;
// Warnings auto-silence
if(warn_level == WARN_WARN)
{
warnings[i].silence = true;
}
}
if(warnings[i].triggered)
{
Serial1.print(0xFE, BYTE);
Serial1.print(0x01, BYTE);
Serial1.print(warnings[i].message);
}
}
if(warn_level || digitalRead(WARNING_PIN) == LOW)
{
warning();
}
}
/**
* Sound a warning according to current level
*/
void warning()
{
noInterrupts();
switch (warn_level) {
case WARN_IN_PROGRESS:
// Should be done now
warn_level = WARN_OFF;
warningTimer.interval(500);
// Fall through
case WARN_OFF:
noTone(WARNING_PIN);
digitalWrite(WARNING_PIN, HIGH);
break;
case WARN_WARN:
tone(WARNING_PIN, 150, 1000);
warn_level = WARN_IN_PROGRESS;
// Come back after 1 second
warningTimer.interval(1000);
break;
case WARN_ALARM:
// Constant
tone(WARNING_PIN, 2);
break;
}
interrupts();
}
// Check for low fuel
boolean low_fuel()
{
return KSP.vessel.LiquidFuelTot > 0 && (KSP.vessel.LiquidFuel / KSP.vessel.LiquidFuelTot <= LOW_RESOURCE);
}
// Check for low power
boolean low_power()
{
return KSP.vessel.EChargeTot > 0 && (KSP.vessel.ECharge / KSP.vessel.EChargeTot <= LOW_RESOURCE);
}
// Check for no power
boolean no_power()
{
return KSP.vessel.EChargeTot > 0 && (KSP.vessel.ECharge / KSP.vessel.EChargeTot <= NO_RESOURCE);
}