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added button & different led configurations

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This commit is contained in:
Simon Couball
2020-08-17 00:29:13 +02:00
parent 5b3917a895
commit b9ca29a81d
1 changed files with 48 additions and 5 deletions
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53
src/main.cpp
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@@ -2,10 +2,11 @@
static uint8_t led_duration = 8;
/*
* Function: configureTimer
* ----------------------------
* Configures both 16bit timer for 25 kHz pwm signals.
*
*/
void configureTimer()
{
@@ -30,7 +31,7 @@ void configureTimer()
// non-inverted PWM on ch. A, B and C, mode 10: ph. correct PWM, TOP = ICR1
// TCCR1A = _BV(COM1A1) | _BV(COM1B1) | _BV(COM1C1) | _BV(WGM11);
ICR1 = 640; // TOP = 320, @16Mhz CPU -> 25kHz PWM
ICR1 = 320; // TOP = 320, @16Mhz CPU -> 25kHz PWM
OCR1A = 500; // Set duty-cycle
TCCR1B = _BV(WGM13) | _BV(CS10); // prescaler = 1
// Configure Timer 3
@@ -56,6 +57,35 @@ void configureTimer()
// TCCR1A |= _BV(WGM11); //WGM13:WGM10 set 1010
}
uint8_t value_switcher = 0;
float led_a_multiplier = 3;
float led_b_multiplier = led_a_multiplier + led_a_multiplier * 0.02;
float led_c_multiplier = led_a_multiplier - led_a_multiplier * 0.02;
void changeValue (uint8_t value) {
switch (value)
{
case 0:
led_a_multiplier = 3;
led_b_multiplier = 6;
led_c_multiplier = 9;
break;
case 1:
led_a_multiplier = 6;
led_b_multiplier = 3;
led_c_multiplier = 6;
break;
case 2:
led_a_multiplier = 9;
led_b_multiplier = 9;
led_c_multiplier = 3;
value_switcher = 0;
break;
}
}
/*
* Function: setup
@@ -74,6 +104,7 @@ void setup()
pinMode(4, OUTPUT);
pinMode(9, OUTPUT);
pinMode(7, INPUT);
pinMode(12, INPUT);
// configure timer
Serial.println("configure timer for 25kHz PWM...");
@@ -98,10 +129,21 @@ static uint16_t led_b_counter = led_b_period;
static uint16_t led_c_period = (uint16_t)-1;
static uint16_t led_c_counter = led_c_period;
uint8_t button_last_state = HIGH;
ISR(TIMER0_COMPA_vect){
iterator++;
uint8_t tacho_current = digitalRead(7);
uint8_t button_current = digitalRead(12);
if(button_last_state == HIGH && button_current == LOW){
changeValue(value_switcher++);
}
button_last_state = button_current;
/* Get number of loop iterations per fan revolution */
if (!tacho_last && tacho_current) {
@@ -110,9 +152,9 @@ ISR(TIMER0_COMPA_vect){
} else {
tacho_counter = 0;
period = iterator;
led_a_period = period / 3;
led_b_period = period * 20 / 61;
led_c_period = period * 20 / 59;
led_a_period = period / led_a_multiplier;
led_b_period = period / led_b_multiplier;
led_c_period = period / led_c_multiplier;
iterator = 0;
rotations++;
}
@@ -155,4 +197,5 @@ ISR(TIMER0_COMPA_vect){
void loop()
{
}