На мен не ми е проблем да го разпиша, а те това според мен е ардуино функция set_sleep_mode(SLEEP_MODE_PWR_DOWN), поне гледам че я изпозлват в ардуино кода и точно за нея не намерих какво точно прави. Иначе ето какво предлага тенекето :
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/sleep.h>
// Watchdog Timer interrupt service routine.
// This ISR is called when the watchdog timer expires.
// Its sole purpose is to wake the MCU from sleep.
ISR(WDT_INT_vect)
{
// Nothing is required here.
// The interrupt simply wakes the MCU.
}
// Configure the system clock:
// Use the internal 16 MHz oscillator, then divide by 16 for a 1 MHz system clock.
void init_clock(void)
{
// Note: The ATtiny1616 is shipped with its internal oscillator enabled.
// To change the prescaler, set the prescaler enable bit (PEN) and the division factor.
// The constant CLKCTRL_PDIV_DIV16_gc selects division by 16.
// (Check your device header files to be sure these macros match your version.)
CLKCTRL.MCLKCTRLB = CLKCTRL_PDIV_DIV16_gc | CLKCTRL_PEN_bm;
}
// Setup the Watchdog Timer to generate an interrupt every ~1 second.
void init_wdt(void)
{
// The watchdog can be configured with various periods. Here we assume that
// WDT_PERIOD_1SEC_gc selects a ~1 second timeout.
// The WDT_WINDOW_OFF_gc turns off any windowed mode so that the timer simply runs.
// WDT_ENABLE_bm turns on the watchdog.
WDT.CTRL = WDT_PERIOD_1SEC_gc | WDT_WINDOW_OFF_gc | WDT_ENABLE_bm;
}
// Optionally disable unused peripherals to save power.
// (For each module you are not using, disable its clock or power if possible.)
// For example, if you are not using the ADC you might disable it as shown below.
// (Uncomment and adjust as needed for your application.)
// void disable_peripherals(void)
// {
// // Example: Disable ADC if not used.
// ADC0.CTRLA = 0;
// // Other peripherals (like timers, USART, TWI, etc.) can be disabled similarly.
// }
int main(void)
{
// Disable global interrupts while configuring the system.
cli();
// Initialize system clock with prescaler.
init_clock();
// Optionally, disable unused peripherals to save power.
// disable_peripherals();
// Set sleep mode to deep power-down.
// On ATtiny1616, deep sleep is typically the power-down mode.
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
sleep_enable();
// Setup watchdog timer for a ~1 second wakeup period.
init_wdt();
// Enable global interrupts.
sei();
// Main loop: the MCU will sleep, and each watchdog interrupt will wake it up.
while (1)
{
// Enter sleep mode. The MCU will resume here after the watchdog timer interrupt.
sleep_cpu();
// (Optional) Place any code here that you want executed immediately after wakeup.
// For a low-power design, you might simply loop back into sleep.
}
// Code should never reach here.
return 0;
}
Но регистрите не са верни, отделно чака прекъсване от WDT а такова няма. Аз напоследък редовно го тествам каква глупост ще сътвори, казах му че WDT няма прекъсване, помисли помисли, и го напрви с друг таймер ... твоето само ли се сети да изпозлва RTC или ти му подсказа ?
