♻️ Refactor HAL as singleton (#23357)
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@@ -35,7 +35,7 @@
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static pin_t tone_pin;
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volatile static int32_t toggles;
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void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration) {
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void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration/*=0*/) {
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tone_pin = _pin;
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toggles = 2 * frequency * duration / 1000;
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HAL_timer_start(MF_TIMER_TONE, 2 * frequency);
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