.gitignore

@@ -1,6 +1,3 @@
 main.o
 main.map
 main.elf
-pre_built/attiny13_9-6Mhz.hex
-test_blink/waveform
-test_blink/main.hex

main.c

@@ -1,6 +1,6 @@
 /*
  * FileName: *.c
- * Date: 2024
+ * Date: 2023
  * Descripton: Program for Atiny13A controllers, controls DPDT relays and
  * has options to save settings in EEPROM.
  */
@@ -10,7 +10,7 @@
 #endif
 
 #ifndef F_CPU
-#define F_CPU 9600000UL
+#define F_CPU 4800000UL
 #endif
 
 
@@ -43,7 +43,7 @@
 #define ROM_EP_ADR      0x3
 
 //Debounce check number.
-#define MAX_CHECKS 5
+#define MAX_CHECKS 10
 
 // Define DISABLE_TEMPORARY_SWITCH to turn off the ability to hold
 // the switch to temporarily engage/bypass.
@@ -62,14 +62,21 @@
 
 
 
-/*Assuming default fuses are used then it's approximatly 33.4375ms per tick.
+/*The timing of "ticks" is dependent on the AVR timer's counter register
+ * so for an 8bit register the maximum value is 256. Given we stick with
+ * a 1Mhz cpu frequency can use this formula to calculate the number of
+ * interrupts(timer overflows) per second:
+ *
+ * OVF_S = (F_CPU / DIV)/ (2^8)
+ * 61 = (1000000 / 64) / 256
  *
  * This is important because the ATiny13/A only have a single timer built into
  * them.
  *
  * Ticks are used as our way of keep track of long button presses.
  * */
-#define LONG_PRESS_TICKS 32 /*Approximatly 510ms*/
+//original sent had 60
+#define LONG_PRESS_TICKS 66
 
 
 /*A structure to hold the button info*/
@@ -100,6 +107,8 @@ volatile uint8_t debounced_state;
 volatile uint8_t db_state[MAX_CHECKS];
 volatile uint8_t idx;
 
+volatile uint16_t tick_count;
+
 /*
  * ###############################
  * FUNCTION PROTOTYPES
@@ -134,7 +143,7 @@ void init_prog()
     init_btn(&btn2, PIN_SW2, PIN_BYPASS2);
     
     /*Wait 5ms for pull-up resistors voltage to become stable.*/
-    //_delay_ms(5);
+    _delay_ms(5);
 
     /*check if the eeprom has info. */
     while(! eeprom_is_ready()) {} //Blocks until eeprom is ready.
@@ -197,6 +206,15 @@ int main()
  * ###############################
  */
 
+void inf_blink_test(){
+    DDRB |= (1<<PB3);
+    while(1){
+        PORTB ^= (1<<PB3);
+        _delay_ms(250);
+    }
+}
+
+
 //Made heavy use of static inline functions to improve readability.
 
 static inline void blink_bypass1(void)
@@ -356,6 +374,8 @@ static inline void debounce_switch() {
 
 /*Setup the timer0 on the AVR*/
 static inline void init_timer0() { 
+    /*Zero out the tick_count var*/
+    tick_count = 0;
 
     /*config to normal mode.*/
     TCCR0A = 0x00;  //stop timer
@@ -378,11 +398,15 @@ static inline void init_timer0() {
 //ISR(TIMER0_OVF_vect)
 
 /*The interrupt service routine for the timer0*/
-ISR(TIM0_OVF_vect, ISR_BLOCK)
+ISR(TIM0_OVF_vect)
 {
+    /*Disable global interrupts*/
+    cli();
+
     /*Check the state of the switches*/
     debounce_switch();
 
+    /*Update the tick_count*/
     if(btn1.timer_enabled && btn1.pressed_ticks <= UINT8_MAX){
         btn1.pressed_ticks += 1;
     }

makefile

@@ -9,8 +9,8 @@ CC = avr-gcc
 
 #Default cpu frequency is 9.8Mhz, 4.8 gives us less power consumption
 #F_CPU = 1000000UL
-#F_CPU = 4800000UL
+F_CPU = 4800000UL
-F_CPU = 9800000UL
+#F_CPU = 9800000UL
 MCU = attiny13a
 
 # Flags