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Merge pull request #4448 from jbrazio/speaker-followup

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A little cleanup at speaker.h
This commit is contained in:
Scott Lahteine 2016-07-28 17:37:36 -07:00 committed by GitHub
commit 6f59560526
2 changed files with 13 additions and 16 deletions
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1
Marlin/buzzer.h
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@ -104,7 +104,6 @@ class Buzzer {
*/
void tone(uint16_t const &duration, uint16_t const &frequency = 0) {
while (buffer.isFull()) {
delay(5);
this->tick();
thermalManager.manage_heater();
}

28
Marlin/speaker.h
View File

@ -32,7 +32,7 @@ class Speaker: public Buzzer {
struct state_t {
tone_t tone;
uint16_t period;
uint16_t cycles;
uint16_t counter;
} state;
protected:
@ -43,7 +43,7 @@ class Speaker: public Buzzer {
void reset() {
super::reset();
this->state.period = 0;
this->state.cycles = 0;
this->state.counter = 0;
}
public:
@ -60,7 +60,7 @@ class Speaker: public Buzzer {
* playing the tones in the queue.
*/
virtual void tick() {
if (!this->state.cycles) {
if (!this->state.counter) {
if (this->buffer.isEmpty()) return;
this->reset();
@ -69,20 +69,18 @@ class Speaker: public Buzzer {
// Period is uint16, min frequency will be ~16Hz
this->state.period = 1000000UL / this->state.tone.frequency;
this->state.cycles =
(this->state.tone.duration * 1000L) / this->state.period;
this->state.counter =
(this->state.tone.counter * 1000L) / this->state.period;
this->state.period >>= 1;
this->state.cycles <<= 1;
this->state.period >>= 1;
this->state.counter <<= 1;
} else {
const uint32_t now = micros();
static uint32_t next = now + this->state.period;
}
else {
uint32_t const us = micros();
static uint32_t next = us + this->state.period;
if (us >= next) {
--this->state.cycles;
next = us + this->state.period;
if (now >= next) {
--this->state.counter;
next = now + this->state.period;
if (this->state.tone.frequency > 0) this->invert();
}
}