0,0 → 1,93 |
/*********************************************************************************************************************************** |
* File: main.c |
* |
* Purpose: This program has been developed for the microcontroller test board AVR-CTRL |
* It is reading a poti connected to analog input = ADC and passes that value to BL CTRL via I2C |
* to set the turn rate of the connected electrical motor |
* |
* Functions: int main(void) |
* ISR(ADC_vect) |
* void init_ADC(void) |
* |
* hardware: AVR-Ctrl experimental board without LCD display as I2C bus is used |
* |
* Created: Jan 2013 |
* |
* Version: 1.00 experimental version |
* |
* Copyright: (c)2013 dk9nw -at- darc.de |
* All rights reserved. This software is available only for non-commercial amateur radio or educational applications. |
* Other uses are prohibited. This software may be modified only if |
* the resulting code be made available publicly and the original author(s) given credit. |
* |
***********************************************************************************************************************************/ |
#include "main.h" |
#include "timer.h" |
#include "I2Cmaster.h" |
#include "analog.h" |
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// ************************************************************************************************************************** |
// main function starting here |
// |
// INPUT: None |
// OUTPUT: None |
// RETURN: 1 |
// -------------------------------------------------------------------------------------------------------------------------- |
int main (void) |
{ |
// DDRA = Port A Data Direction Register > DDA7 DDA6 DDA5 DDA4 DDA3 DDA2 DDA1 DDA0 |
DDRA &= ~((1<<DDA7)|(1<<DDA6)|(1<<DDA5)|(1<<DDA4)|(1<<DDA3)); // those 5 keys are configured as input |
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DDRB=0xFF; // all ports set as output as LEDs are connected here |
PORTB = 0x00; // switch off all LEDs |
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init_ADC(); // initialize analog digial converter |
init_Timer0(); // initialize timer |
i2c_init(); // initialize I2C Bus (TWI) |
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// ************************************************************************************************************************** |
void loop2ms(void) |
{ |
// ADCSRA = Analog Digital Conversion Status Register A -> ADEN ADSC ADATE ADIF ADIE ADPS2 ADPS1 ADPS0 |
// ADSC = start conversion |
ADCSRA |= (1<<ADSC); |
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while(!AdReady); // wait that ISR in analog.c is passed |
AdReady = 0; |
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AdWertNick = AdWertNick / 2; // AdWertNick 0...511 |
Motor[0] = (AdWertNick); // desired turn rate is passed over to the motor front side |
Motor[1] = (AdWertNick); // desired turn rate is passed over to the motor rear side |
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if (AdWertNick<32) PORTB = 0x01; // switch on LED 1 |
if (AdWertNick>31 && AdWertNick<64) PORTB = 0x02; // ... LED 2 |
if (AdWertNick>63 && AdWertNick<96) PORTB = 0x04; // ... LED 3 |
if (AdWertNick>95 && AdWertNick<128) PORTB = 0x08; // ... LED 4 |
if (AdWertNick>127 && AdWertNick<160) PORTB = 0x10; // ... LED 5 |
if (AdWertNick>159 && AdWertNick<192) PORTB = 0x20; // ... LED 6 |
if (AdWertNick>191 && AdWertNick<224) PORTB = 0x40; // ... LED 7 |
if (AdWertNick>223 ) PORTB = 0x80; // ... LED 8 |
} |
// ************************************************************************************************************************** |
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// ************************************************************************************************************************** |
while (1) |
{ |
if ( ((PINA & 0xF8)>> 3) == 0x01) break; // red button to finish program if necessary |
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if(Flag2ms()) // toggle that loop every 2 ms |
{ |
loop2ms(); |
} |
} |
// ************************************************************************************************************************** |
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} |
// *** EOF : main() ************************************************************************************************************* |
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