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| author | Selene ToyKeeper | 2021-04-01 16:30:16 -0600 |
|---|---|---|
| committer | Selene ToyKeeper | 2021-04-01 16:30:16 -0600 |
| commit | bc281fdece8f3913c9ae13503f6d049e8879e0ce (patch) | |
| tree | d96db6041a308caed35ee693389434263c901dd7 /spaghetti-monster/fsm-wdt.c | |
| parent | updated MODELS file with missing K9.3-nofet build target (diff) | |
| parent | Merge TKs changes from 2021-01-25 (diff) | |
| download | anduril-bc281fdece8f3913c9ae13503f6d049e8879e0ce.tar.gz anduril-bc281fdece8f3913c9ae13503f6d049e8879e0ce.tar.bz2 anduril-bc281fdece8f3913c9ae13503f6d049e8879e0ce.zip | |
merged gchart's Tiny1 series branch for tiny1616 support
Diffstat (limited to 'spaghetti-monster/fsm-wdt.c')
| -rw-r--r-- | spaghetti-monster/fsm-wdt.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/spaghetti-monster/fsm-wdt.c b/spaghetti-monster/fsm-wdt.c index 9e8d9af..ea2efac 100644 --- a/spaghetti-monster/fsm-wdt.c +++ b/spaghetti-monster/fsm-wdt.c @@ -23,6 +23,10 @@ #include <avr/interrupt.h> #include <avr/wdt.h> +// *** Note for the AVRXMEGA3 (1-Series, eg 816 and 817), the WDT +// is not used for time-based interrupts. A new peripheral, the +// Periodic Interrupt Timer ("PIT") is used for this purpose. + void WDT_on() { #if (ATTINY == 25) || (ATTINY == 45) || (ATTINY == 85) @@ -35,6 +39,10 @@ void WDT_on() #elif (ATTINY == 1634) wdt_reset(); // Reset the WDT WDTCSR = (1<<WDIE); // Enable interrupt every 16ms + #elif defined(AVRXMEGA3) // ATTINY816, 817, etc + RTC.PITINTCTRL = RTC_PI_bm; // enable the Periodic Interrupt + while (RTC.PITSTATUS > 0) {} // make sure the register is ready to be updated + RTC.PITCTRLA = RTC_PERIOD_CYC512_gc | RTC_PITEN_bm; // Period = 16ms, enable the PI Timer #else #error Unrecognized MCU type #endif @@ -53,6 +61,10 @@ inline void WDT_slow() #elif (ATTINY == 1634) wdt_reset(); // Reset the WDT WDTCSR = (1<<WDIE) | STANDBY_TICK_SPEED; + #elif defined(AVRXMEGA3) // ATTINY816, 817, etc + RTC.PITINTCTRL = RTC_PI_bm; // enable the Periodic Interrupt + while (RTC.PITSTATUS > 0) {} // make sure the register is ready to be updated + RTC.PITCTRLA = (1<<6) | (STANDBY_TICK_SPEED<<3) | RTC_PITEN_bm; // Set period, enable the PI Timer #else #error Unrecognized MCU type #endif @@ -75,13 +87,21 @@ inline void WDT_off() CCP = 0xD8; // enable config changes WDTCSR = 0; // disable and clear all WDT settings sei(); + #elif defined(AVRXMEGA3) // ATTINY816, 817, etc + while (RTC.PITSTATUS > 0) {} // make sure the register is ready to be updated + RTC.PITCTRLA = 0; // Disable the PI Timer #else #error Unrecognized MCU type #endif } // clock tick -- this runs every 16ms (62.5 fps) +#ifdef AVRXMEGA3 // ATTINY816, 817, etc +ISR(RTC_PIT_vect) { + RTC.PITINTFLAGS = RTC_PI_bm; // clear the PIT interrupt flag +#else ISR(WDT_vect) { +#endif irq_wdt = 1; // WDT event happened } |