🐛 Prevent AVR watchdogpile (#23075)
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@ -4224,3 +4224,6 @@
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*/
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*/
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//#define SOFT_RESET_VIA_SERIAL // 'KILL' and '^X' commands will soft-reset the controller
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//#define SOFT_RESET_VIA_SERIAL // 'KILL' and '^X' commands will soft-reset the controller
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//#define SOFT_RESET_ON_KILL // Use a digital button to soft-reset the controller after KILL
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//#define SOFT_RESET_ON_KILL // Use a digital button to soft-reset the controller after KILL
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// Report uncleaned reset reason from register r2 instead of MCUSR. Supported by Optiboot on AVR.
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//#define OPTIBOOT_RESET_REASON
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@ -35,12 +35,31 @@
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// Public Variables
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// Public Variables
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// ------------------------
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// ------------------------
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//uint8_t MCUSR;
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// Don't initialize/override variable (which would happen in .init4)
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uint8_t reset_reason __attribute__((section(".noinit")));
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// ------------------------
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// ------------------------
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// Public functions
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// Public functions
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// ------------------------
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// ------------------------
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__attribute__((naked)) // Don't output function pro- and epilogue
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__attribute__((used)) // Output the function, even if "not used"
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__attribute__((section(".init3"))) // Put in an early user definable section
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void HAL_save_reset_reason() {
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#if ENABLED(OPTIBOOT_RESET_REASON)
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__asm__ __volatile__(
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A("STS %0, r2")
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: "=m"(reset_reason)
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);
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#else
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reset_reason = MCUSR;
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#endif
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// Clear within 16ms since WDRF bit enables a 16ms watchdog timer -> Boot loop
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MCUSR = 0;
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wdt_disable();
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}
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void HAL_init() {
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void HAL_init() {
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// Init Servo Pins
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// Init Servo Pins
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#define INIT_SERVO(N) OUT_WRITE(SERVO##N##_PIN, LOW)
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#define INIT_SERVO(N) OUT_WRITE(SERVO##N##_PIN, LOW)
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@ -91,7 +91,7 @@ typedef int8_t pin_t;
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// Public Variables
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// Public Variables
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// ------------------------
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// ------------------------
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//extern uint8_t MCUSR;
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extern uint8_t reset_reason;
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// Serial ports
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// Serial ports
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#ifdef USBCON
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#ifdef USBCON
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@ -152,8 +152,8 @@ void HAL_init();
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//void _delay_ms(const int delay);
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//void _delay_ms(const int delay);
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inline void HAL_clear_reset_source() { MCUSR = 0; }
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inline void HAL_clear_reset_source() { }
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inline uint8_t HAL_get_reset_source() { return MCUSR; }
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inline uint8_t HAL_get_reset_source() { return reset_reason; }
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void HAL_reboot();
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void HAL_reboot();
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@ -2489,6 +2489,11 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
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#error "An encoder button is required or SOFT_RESET_ON_KILL will reset the printer without notice!"
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#error "An encoder button is required or SOFT_RESET_ON_KILL will reset the printer without notice!"
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#endif
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#endif
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// Reset reason for AVR
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#if ENABLED(OPTIBOOT_RESET_REASON) && !defined(__AVR__)
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#error "OPTIBOOT_RESET_REASON only applies to AVR."
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#endif
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/**
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/**
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* I2C bus
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* I2C bus
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*/
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*/
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