Fix buzzer volume

This commit is contained in:
Pascal Engélibert 2022-09-10 19:13:23 +02:00
parent c43e7d379f
commit 43921bc4f2
Signed by: tuxmain
GPG key ID: 3504BC6D362F7DCA
4 changed files with 92 additions and 92 deletions

1
.gitignore vendored
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@ -1 +1,2 @@
/alarmclock/alarmclock-backups /alarmclock/alarmclock-backups
/alarmclock/#auto_saved_files#

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@ -12,7 +12,9 @@ Arduino alarm clock with binary matrix LED display and capacitive touch buttons.
## Notes ## Notes
A NE555 is used for generating a high-frequency PWM signal, feeding one 74HC's "Output Enable" port. This is because otherwise the LEDs are too bright, and playing with the serial signal to reduce brightness is not fast enough (it produces a perceptible blinking). Also, using the Arduino's internal PWM causes the serial transmission to behave erratically. And of course, as 74HC uses logical gates, it needs a binary (PWM) signal, not analog. A NE555 is used for generating a high-frequency PWM signal, feeding one 74HC's "Output Enable" port. This is because otherwise the LEDs are too bright, and playing with the serial signal to reduce brightness is not fast enough (it produces a perceptible blinking). Also, using the Arduino's internal PWM causes the serial transmission to behave erratically (because of timers interfering with transmission, and because frequency is too low). And of course, as 74HC uses logical gates, it needs a binary (PWM) signal, not analog.
D5 is used for the buzzer because its PWM frequency is greater than other pins.
## TODO ## TODO
@ -21,11 +23,11 @@ A NE555 is used for generating a high-frequency PWM signal, feeding one 74HC's "
* multiple alarms * multiple alarms
* date (at least weekday) * date (at least weekday)
* connection with online timetable? * connection with online timetable?
* progressive alarm ringing
* capacitive sensing causes LED matrix to flicker * capacitive sensing causes LED matrix to flicker
* better calibrate display PWM * better calibrate display PWM
* light sensor for display PWM * light sensor for display PWM
* save alarm time & automatically retrieve time from network or RF * save alarm time & automatically retrieve time from network or RF
* alarm auto-stop
## License ## License

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@ -7,17 +7,20 @@
#define MODE_SETALARM 2 #define MODE_SETALARM 2
#define PIN_BUTTON 3 #define PIN_BUTTON 3
#define PIN_BUZZER_LOUD 8 #define PIN_BUZZER 5
#define PIN_BUZZER_QUIET 12
#define PIN_LED_DUTY A0
#define PIN_REG_CLOCK 7 #define PIN_REG_CLOCK 7
#define PIN_REG_DATA 5 #define PIN_REG_DATA 4
#define PIN_REG_LATCH 6 #define PIN_REG_LATCH 6
#define PIN_TOUCH_0 11
#define PIN_TOUCH_1 10
#define PIN_TOUCH_2 2
#define PIN_TOUCH_3 9
#define PIN_TOUCH_COM A1
CapacitiveSensor touch_0 = CapacitiveSensor(A1, 11); CapacitiveSensor touch_0 = CapacitiveSensor(PIN_TOUCH_COM, PIN_TOUCH_0);
CapacitiveSensor touch_1 = CapacitiveSensor(A1, 10); CapacitiveSensor touch_1 = CapacitiveSensor(PIN_TOUCH_COM, PIN_TOUCH_1);
CapacitiveSensor touch_2 = CapacitiveSensor(A1, 2); CapacitiveSensor touch_2 = CapacitiveSensor(PIN_TOUCH_COM, PIN_TOUCH_2);
CapacitiveSensor touch_3 = CapacitiveSensor(A1, 9); CapacitiveSensor touch_3 = CapacitiveSensor(PIN_TOUCH_COM, PIN_TOUCH_3);
// Matrix state // Matrix state
unsigned char matrix[8] = {0b10000001, 0, 0, 0, 0, 0, 0, 0b10000001}; unsigned char matrix[8] = {0b10000001, 0, 0, 0, 0, 0, 0, 0b10000001};
@ -44,6 +47,7 @@ unsigned long last_light_measure = 0;
unsigned long touch_time[4] = {0, 0, 0, 0}; unsigned long touch_time[4] = {0, 0, 0, 0};
unsigned long last_touch_measure = 0; unsigned long last_touch_measure = 0;
unsigned char touch_step = 0;
// Bytewise reverse // Bytewise reverse
unsigned char reverse(unsigned char b) { unsigned char reverse(unsigned char b) {
@ -111,8 +115,7 @@ void setup() {
pinMode(PIN_REG_DATA, OUTPUT); pinMode(PIN_REG_DATA, OUTPUT);
pinMode(PIN_REG_CLOCK, OUTPUT); pinMode(PIN_REG_CLOCK, OUTPUT);
pinMode(PIN_REG_LATCH, OUTPUT); pinMode(PIN_REG_LATCH, OUTPUT);
pinMode(PIN_BUZZER_QUIET, OUTPUT); pinMode(PIN_BUZZER, OUTPUT);
pinMode(PIN_BUZZER_LOUD, OUTPUT);
pinMode(PIN_BUTTON, INPUT_PULLUP); pinMode(PIN_BUTTON, INPUT_PULLUP);
pinMode(13, OUTPUT); pinMode(13, OUTPUT);
@ -133,23 +136,37 @@ void loop() {
#endif #endif
// Calibrate the thresholds according to your resistors // Calibrate the thresholds according to your resistors
if(millis() > last_touch_measure + 50) { if(millis() > last_touch_measure + 15) {
if(touch_0.capacitiveSensor(10) > 127 && millis() > touch_time[0] + 250) { switch(touch_step) {
touch_time[0] = millis(); case 0:
mode = (mode+1) % 3; if(touch_0.capacitiveSensor(10) > 126 && millis() > touch_time[0] + 250) {
} touch_time[0] = millis();
if(touch_1.capacitiveSensor(10) > 127 && millis() > touch_time[1] + 250) { mode = (mode+1) % 3;
touch_time[1] = millis(); stop_ringing();
number_selection = (number_selection+1) % 4; }
} break;
if(touch_2.capacitiveSensor(10) > 32 && millis() > touch_time[2] + 200) { case 1:
touch_time[2] = millis(); if(touch_1.capacitiveSensor(10) > 126 && millis() > touch_time[1] + 250) {
change_selected_number(1); touch_time[1] = millis();
} number_selection = (number_selection+1) % 4;
if(touch_3.capacitiveSensor(10) > 32 && millis() > touch_time[3] + 200) { stop_ringing();
touch_time[3] = millis(); }
change_selected_number(-1); break;
case 2:
if(touch_2.capacitiveSensor(10) > 31 && millis() > touch_time[2] + 150) {
touch_time[2] = millis();
change_selected_number(1);
stop_ringing();
}
break;
case 3:
if(touch_3.capacitiveSensor(10) > 31 && millis() > touch_time[3] + 150) {
touch_time[3] = millis();
change_selected_number(-1);
stop_ringing();
}
} }
touch_step = (touch_step + 1) % 4;
last_touch_measure = millis(); last_touch_measure = millis();
} }
@ -162,31 +179,15 @@ void loop() {
} }
if(alarm_ringing) { if(alarm_ringing) {
if(alarm_ring_start + 30000 > millis()) { if(millis()%1000 < 100) {
if(millis()%1000 < 100) { matrix[7] = 0b11111111;
matrix[7] = 0b11111111; analogWrite(PIN_BUZZER, 1);
digitalWrite(PIN_BUZZER_LOUD, LOW);
digitalWrite(PIN_BUZZER_QUIET, HIGH);
} else {
matrix[7] = 0b10000001;
digitalWrite(PIN_BUZZER_LOUD, LOW);
digitalWrite(PIN_BUZZER_QUIET, LOW);
}
} else { } else {
if(millis()%1000 < 100) { matrix[7] = 0b10000001;
matrix[7] = 0b11111111; digitalWrite(PIN_BUZZER, LOW);
digitalWrite(PIN_BUZZER_LOUD, HIGH);
digitalWrite(PIN_BUZZER_QUIET, LOW);
} else {
matrix[7] = 0b10000001;
digitalWrite(PIN_BUZZER_LOUD, LOW);
digitalWrite(PIN_BUZZER_QUIET, LOW);
}
} }
if(digitalRead(PIN_BUTTON) == LOW) { if(digitalRead(PIN_BUTTON) == LOW) {
digitalWrite(PIN_BUZZER_LOUD, LOW); stop_ringing();
digitalWrite(PIN_BUZZER_QUIET, LOW);
alarm_ringing = false;
} }
} }
@ -217,3 +218,9 @@ void change_time(unsigned long *t, signed int mul) {
} }
*t %= 86400000; *t %= 86400000;
} }
void stop_ringing() {
digitalWrite(PIN_BUZZER, LOW);
matrix[7] = 0b10000001;
alarm_ringing = false;
}