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/***********************************************************************************************************************************
* 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 "twimaster.h"
#include "analog.h"
// **************************************************************************************************************************
// 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
DDRB=0xFF; // all ports set as output as LEDs are connected here
PORTB = 0x00; // switch off all LEDs
init_ADC(); // initialize analog digial converter
init_Timer0(); // initialize timer
i2c_init(); // initialize I2C Bus (TWI)
// **************************************************************************************************************************
void loop2ms(void)
{
// ADCSRA = Analog Digital Conversion Status Register A -> ADEN ADSC ADATE ADIF ADIE ADPS2 ADPS1 ADPS0
// ADSC = start conversion
ADCSRA |= (1<<ADSC);
while(!AdReady); // wait that ISR in analog.c is passed
AdReady = 0;
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
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
}
// **************************************************************************************************************************
// **************************************************************************************************************************
while (1)
{
if ( ((PINA & 0xF8)>> 3) == 0x01) break; // red button to finish program if necessary
if(Flag2ms()) // toggle that loop every 2 ms
{
loop2ms();
}
}
// **************************************************************************************************************************
}
// *** EOF : main() *************************************************************************************************************