Ruakij/Geigercounter
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Split signalOutput to piezo- and led-part
This commit is contained in:
Alexander B 2019-03-08 07:25:24 +01:00
parent 246ccc8d5f
commit e81bda822e
1 changed files with 52 additions and 46 deletions
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100
Geigerzaehler/main.c
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@ -15,22 +15,28 @@
#include <avr/interrupt.h>
#include <stdint.h>
// Global variable declaration
uint16_t boost_frequency = 2000; // 2kHz frequency
uint16_t signalOutput_time = 200; // 200ms
/*
* Global variable declaration
*/
// Set frequencys and general stuff
uint16_t boost_frequency = 2000; // 2kHz frequency
uint16_t signalOutput_piezo_time = 200; // 200ms
uint16_t signalOutput_led_time = 200; // 200ms
uint8_t boost_highVoltage_nextHigh = 1;
uint16_t boost_highVoltage_nextTick = 1;
// Used for execution-timing (with timer) [0 = disabled, >0 = nextTimerTick] (1 is next avaible execution)
uint16_t boost_highVoltage_nextTick = 1; // Execute at start
uint16_t signalOutput_piezo_nextTick = 0;
uint16_t signalOutput_led_nextTick = 0;
uint8_t signalOutput_nextHigh = 1;
uint16_t signalOutput_nextTick = 0;
uint8_t timer1_prescaler = 1;
uint16_t test = 0;
// Prescaling of timer [timer-speed: cpu-clock / prescaler]
// Modes: [1, 8, 64, 256, 1024]
uint8_t timer1_prescaler = 256;
int main()
{
/*
* Init
*/
// Inputs
DDRD &= (0 << PORTD2); // Activate input PD2
DDRD &= (0 << PORTD3); // Activate input PD3
@ -44,40 +50,29 @@ int main()
DDRD |= (1 << PORTD6);
DDRB |= (1 << PORTB5); // Onboard-Led
// Interrupt for INT0 Pin-D2 High-voltage check
// Interrupts
// for INT0 Pin-D2 High-voltage check
EICRA |= (0 << ISC01)|(1 << ISC00); // On at any edge [Code: 01]
EIMSK |= (1 << INT0); // Activate Interrupt INT0
// Interrupt for INT1 Pin-D3 Counter-click
// for INT1 Pin-D3 Counter-click
EICRA |= (1 << ISC11)|(1 << ISC10); // On rising edge [Code: 11]
EIMSK |= (1 <<INT1); // Activate Interrupt INT1
// Init timer1
timer1_init();
sei(); // Activate global interrupts
// Endless loop
while (1)
{
cli(); // Deactivate global interrupts (before checks)
/*
* HighVoltage boosting
*/
if(boost_highVoltage_nextTick > 0 && (uint16_t)TCNT1 >= boost_highVoltage_nextTick) // If we are on or after the tick it should be executed
{
// Set pin according to next exec
if(boost_highVoltage_nextHigh == 1)
{
// Set it high
PORTD |= (1 << PORTD4);
boost_highVoltage_nextHigh = 0; // Next is low
}
else
{
// Set it low
PORTD |= (0 << PORTD4);
boost_highVoltage_nextHigh = 1; // Next is high
}
// Flip pin state
PORTD ^= (1 << PORTD4);
// Calculate when next high/low should be set
boost_highVoltage_nextTick = (uint16_t)TCNT1 + F_CPU/timer1_prescaler * 1/(boost_frequency/2); // Half of time it should be high/low
@ -87,29 +82,41 @@ int main()
/*
* Signal output
*/
if(signalOutput_nextTick > 0 && (uint16_t)TCNT1 >= signalOutput_nextTick) // If we are on or after the tick it should be executed
// Piezo
if(signalOutput_piezo_nextTick > 0 && (uint16_t)TCNT1 >= signalOutput_piezo_nextTick) // If we are on or after the tick it should be executed
{
// Set pin according to next exec
if(signalOutput_nextHigh == 1) // Set it high
{
PORTD |= (1 << PORTD5);
PORTD |= (1 << PORTD6);
signalOutput_nextHigh = 0; // Next is low
// Flip pin state
PORTD ^= (1 << PORTD5);
// When the signal should stop
signalOutput_nextTick = (uint16_t)TCNT1 + F_CPU/timer1_prescaler * signalOutput_time/1000; // nextTick is in signalOutput_time in ms
if(signalOutput_nextTick == 0) signalOutput_nextTick++; // If its 0, it stops, we dont want that
}
else // Set it low
if(!(PIND & (1 << PORTD5)))
{
PORTD |= (0 << PORTD5);
PORTD |= (0 << PORTD6);
signalOutput_nextHigh = 1; // Next is high
signalOutput_nextTick = 0; // Disable signalOutput
// We are on low (again), disable further execution
signalOutput_piezo_nextTick = 0;
}
// When the signal should next flip
signalOutput_piezo_nextTick = (uint16_t)TCNT1 + F_CPU/timer1_prescaler * signalOutput_piezo_time/1000; // Calculate nextTick based on time in ms
if(signalOutput_piezo_nextTick == 0) signalOutput_piezo_nextTick++; // If its 0, it stops, we dont want that
}
// LED
if(signalOutput_led_nextTick > 0 && (uint16_t)TCNT1 >= signalOutput_led_nextTick) // If we are on or after the tick it should be executed
{
// Flip pin state
PORTD ^= (1 << PORTD6);
if(!(PIND & (1 << PORTD6)))
{
// We are on low (again), disable further execution
signalOutput_led_nextTick = 0;
}
// When the signal should next flip
signalOutput_led_nextTick = (uint16_t)TCNT1 + F_CPU/timer1_prescaler * signalOutput_led_time/1000; // Calculate nextTick based on time in ms
if(signalOutput_led_nextTick == 0) signalOutput_led_nextTick++; // If its 0, it stops, we dont want that
}
}
sei(); // Activate global interrupts (after checks) [when an interrupt was fired, it will now be executed]
}
/*
@ -149,7 +156,6 @@ void timer1_init()
/*
* Interrupt-handler
* ISR - Interrupt service routine
*/
// Address: 0x001 INT0 - On any edge [Code: 01]