From f75e87330ff9afb85600cd2e5d05b16b9ead8d19 Mon Sep 17 00:00:00 2001
From: Vassily Petrov <vassily@vassily.org>
Date: Wed, 14 Oct 2020 17:48:56 -0500
Subject: [PATCH] added cutoff when battery voltage is too low
---
athome_firmware.cpp | 42 +++++++++++++++++++++++++++++++++++++-----
athome_firmware.h | 1 +
defs.h | 3 ++-
3 files changed, 40 insertions(+), 6 deletions(-)
diff --git a/athome_firmware.cpp b/athome_firmware.cpp
index 844be2b..0cda75c 100644
--- a/athome_firmware.cpp
+++ b/athome_firmware.cpp
@@ -9,6 +9,7 @@
#include <avr/boot.h>
#include <EEPROM.h>
#include <avr/wdt.h>
+#include <avr/sleep.h>
#include "athome_firmware.h"
#include "photo_measure.h"
@@ -93,7 +94,7 @@ void main_a()
Wire.begin();
analogReference(EXTERNAL);
- pinMode(5, OUTPUT); // heater
+ pinMode(HEATER, OUTPUT); // heater
pinMode(2, OUTPUT);
pinMode(UV_LED, OUTPUT);
pinMode(7, OUTPUT); //Blue Led
@@ -102,7 +103,7 @@ void main_a()
pinMode(16, OUTPUT);
digitalWrite(7, HIGH);
digitalWrite(UV_LED, LOW);
- digitalWrite(5, LOW); // heater
+ digitalWrite(HEATER, LOW); // heater
digitalWrite(2, LOW);
Wire.beginTransmission(0x48);
@@ -193,7 +194,7 @@ void main_a()
// calibration mode.
MCUSR = 0;
wdt_disable();
- pinMode(5, LOW); // disable heater just in case.
+ digitalWrite(HEATER, LOW); // disable heater just in case.
u8g2.firstPage();
do
@@ -226,7 +227,7 @@ void main_a()
// temp calibration measurement mode.
MCUSR = 0;
wdt_disable();
- pinMode(5, LOW); // disable heater just in case.
+ digitalWrite(HEATER, LOW); // disable heater just in case.
while(1){
val = 0;
for(int i=0; i< 32; i++){
@@ -299,6 +300,12 @@ void main_a()
measure_trigger_delay = 0;
}
+ if ( state == STATE_IDLE && voltage < 6.4){
+ lowbatt(false);
+ }else if( voltage < 6){
+ lowbatt(true);
+ }
+
//delay(5);
}
}
@@ -370,6 +377,31 @@ void task_temp()
dirs_idx = next;
power = int(max(0.0, min(POWER_MAX, P * (setpoint - temp) + I * (integ / 100) + D * (10 * dirs_sum))));
}
- analogWrite(5, power);
+ analogWrite(HEATER, power);
}
+
+
+void lowbatt( boolean disablescreen )
+{
+ digitalWrite(HEATER, LOW); // disable heater
+ digitalWrite(UV_LED, LOW); // disable illimunator
+ digitalWrite(7, LOW); //Blue Led
+ digitalWrite(8, LOW); // Button
+ digitalWrite(9, LOW); // Green Led
+
+ u8g2.firstPage();
+ do
+ {
+ u8g2.setDrawColor(1);
+ u8g2.setFont(FONT);
+ u8g2.drawStr(14, 39, "LOW BATT");
+ } while (u8g2.nextPage());
+
+ MCUSR = 0;
+ wdt_disable();
+ cli();
+ set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+ while(1)sleep_mode();
+
+}
\ No newline at end of file
diff --git a/athome_firmware.h b/athome_firmware.h
index 4cebdec..4415f13 100644
--- a/athome_firmware.h
+++ b/athome_firmware.h
@@ -3,5 +3,6 @@
void main_a();
void task_temp();
+void lowbatt( boolean disablescreen );
#endif
\ No newline at end of file
diff --git a/defs.h b/defs.h
index aaa75b4..c525286 100644
--- a/defs.h
+++ b/defs.h
@@ -13,6 +13,7 @@
#define FAN 16
#define UV_LED 6
+#define HEATER 5
// led plugged into fan temporarily
//#define UV_LED 16
@@ -25,6 +26,6 @@
#define POWER_MAX 50.0
#define FONT u8g2_font_helvR14_tr
-#define VERSION 25
+#define VERSION 26
#endif
\ No newline at end of file
--
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