main.c File Reference

Main firmware file for RCC RGB LED Color Cube on AVR. More...

#include "main.h"

Include dependency graph for main.c:

Functions
	ISR (PORTA_PORT_vect)
	Interrupt Service Routine for PORTA pin change or event.
	ISR (TCA0_OVF_vect)
	Timer/Counter Overflow Interrupt Service Routine.
int	main (void)

Variables
char EEMEM	description [] = "RCC Firmware v1.0 by"
char EEMEM	author [] = "R. GAECHTER"
char EEMEM	copyright [] = "Copyright 2025 g.raf engineering"
char EEMEM	github [] = "github.com/0x007e/rcc"
LED_Data EEMEM	ee_led1
LED_Data EEMEM	ee_led2
LED_Data	led1
LED_Data	led2
volatile unsigned long	systick

Detailed Description

Main firmware file for RCC RGB LED Color Cube on AVR.

This source file implements the main control flow and event handling for the RCC embedded system. It manages system initialization, LEDs and battery management, interrupt handling, EEPROM operations, and execution of user commands triggered by button inputs. Key functionalities include timed LED blinking, system-wide power management including shutdown and restart logic, and processing of button press events for dynamic LED control.

Author

g.raf

Date

2025-12-10

Version

1.0 Release

Copyright

Copyright (c) 2025 g.raf Released under the GPLv3 License. (see LICENSE in repository)

Note

This file is part of a larger AVR embedded project subject to the license specified in the repository. For updates and complete revision history, see the GitHub repository.

See also

https://github.com/0x007e/rcc "RCC - RGB LED Color Cube"

Function Documentation

ISR() [1/2]

ISR

(

PORTA_PORT_vect

)

Interrupt Service Routine for PORTA pin change or event.

This ISR handles the interrupt triggered by an event on PORTA pins. In this implementation, it only clears the interrupt flag for PIN7 on PORTA to acknowledge and allow further interrupts. This prevents the interrupt from continuously retriggering.

Note

The ISR is registered for the PORTA interrupt vector and is executed automatically upon the corresponding hardware interrupt and is necessary for system wakeup after deep sleep.

ISR() [2/2]

ISR

(

TCA0_OVF_vect

)

Timer/Counter Overflow Interrupt Service Routine.

This ISR is called when the Timer/Counter overflows. It increments the global millisecond tick counter systick used for system timing. The interrupt flag for the overflow is cleared to allow subsequent interrupts.

Note

Ensure the timer is properly configured and overflow interrupts are enabled for this routine to be executed correctly.

main()

int main

(

void

)

Here is the call graph for this function:

Variable Documentation

author

char EEMEM author[] = "R. GAECHTER"

copyright

char EEMEM copyright[] = "Copyright 2025 g.raf engineering"

description

char EEMEM description[] = "RCC Firmware v1.0 by"

ee_led1

LED_Data EEMEM ee_led1

Initial value:

= {
    0x03,
    0x0F,
    0x00,
    0x0A
}

ee_led2

LED_Data EEMEM ee_led2

Initial value:

= {
    0x03,
    0x00,
    0x0F,
    0x0A
}

github

char EEMEM github[] = "github.com/0x007e/rcc"

led1

LED_Data led1

Initial value:

= {
    0x01,
    0x0F,
    0x00,
    0x0A
}

led2

LED_Data led2

Initial value:

= {
    0x01,
    0x00,
    0x0F,
    0x0A
}

systick

volatile unsigned long systick