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Broken interrupt foo

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This commit is contained in:
Simon Couball
2020-08-12 00:25:12 +02:00
parent ad676c5b5e
commit 2c95f6ae0e
1 changed files with 71 additions and 56 deletions
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43
src/main.cpp
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@@ -9,6 +9,19 @@ static uint8_t led_duration = 4;
*/ */
void configureTimer() void configureTimer()
{ {
// Configure Timer 0 to generate periodic interrupts
TCCR0A = 0;// set entire TCCR0A register to 0
TCCR0B = 0;// same for TCCR0B
TCNT0 = 0;//initialize counter value to 0
// set compare match register for 2khz increments
OCR0A = 124;// = (16*10^6) / (2000*64) - 1 (must be <256)
// turn on CTC mode
TCCR0A |= (1 << WGM01);
// Set CS01 and CS00 bits for 64 prescaler
TCCR0B |= (1 << CS01) | (1 << CS00);
// enable timer compare interrupt
TIMSK0 |= (1 << OCIE0A);
// Configure Timer 1 for PWM @ 25 kHz. // Configure Timer 1 for PWM @ 25 kHz.
TCCR1A = 0; // undo the configuration done by... TCCR1A = 0; // undo the configuration done by...
TCCR1B = 0; // ...the Arduino core library... TCCR1B = 0; // ...the Arduino core library...
@@ -64,25 +77,24 @@ void setup()
// configure timer // configure timer
Serial.println("configure timer for 25kHz PWM..."); Serial.println("configure timer for 25kHz PWM...");
configureTimer(); configureTimer();
Serial.println("fan control setup done."); Serial.println("fan control setup done.");
Serial.println("Enable interrupts...");
sei();
} }
void loop() static uint8_t tacho_last = 0;
{ static uint8_t tacho_counter = 0;
uint8_t tacho_last = 0; static uint32_t iterator = 0;
uint8_t tacho_counter = 0; static uint32_t period = 0;
uint32_t iterator = 0; static uint16_t rotations = 0;
uint32_t period = 0;
uint16_t rotations = 0;
uint16_t led_a_period = (uint16_t)-1; static uint16_t led_a_period = (uint16_t)-1;
uint16_t led_a_counter = led_a_period; static uint16_t led_a_counter = led_a_period;
uint16_t led_b_period = (uint16_t)-1; static uint16_t led_b_period = (uint16_t)-1;
uint16_t led_b_counter = led_b_period; static uint16_t led_b_counter = led_b_period;
while (1) { ISR(TIMER0_COMPA_vect){
iterator++; iterator++;
uint8_t tacho_current = digitalRead(7); uint8_t tacho_current = digitalRead(7);
@@ -123,5 +135,8 @@ void loop()
} else { } else {
digitalWrite(3, LOW); digitalWrite(3, LOW);
} }
} }
void loop()
{
} }