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| Rev | Author | Line No. | Line |
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| 2216 | - | 1 | /*********************************************************************************************************************************** |
| 2 | * File: main.c |
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| 3 | * |
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| 4 | * Purpose: This program has been developed for the microcontroller test board AVR-CTRL |
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| 5 | * It is reading a poti connected to analog input = ADC and passes that value to BL CTRL via I2C |
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| 6 | * to set the turn rate of the connected electrical motor |
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| 7 | * |
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| 8 | * Functions: int main(void) |
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| 9 | * ISR(ADC_vect) |
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| 10 | * void init_ADC(void) |
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| 11 | * |
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| 12 | * hardware: AVR-Ctrl experimental board without LCD display as I2C bus is used |
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| 13 | * |
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| 14 | * Created: Jan 2013 |
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| 15 | * |
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| 16 | * Version: 1.00 experimental version |
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| 17 | * |
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| 18 | * Copyright: (c)2013 dk9nw -at- darc.de |
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| 19 | * All rights reserved. This software is available only for non-commercial amateur radio or educational applications. |
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| 20 | * Other uses are prohibited. This software may be modified only if |
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| 21 | * the resulting code be made available publicly and the original author(s) given credit. |
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| 22 | * |
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| 23 | ***********************************************************************************************************************************/ |
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| 24 | #include "main.h" |
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| 25 | #include "timer.h" |
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| 26 | #include "twimaster.h" |
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| 27 | #include "analog.h" |
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| 28 | |||
| 29 | |||
| 30 | // ************************************************************************************************************************** |
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| 31 | // main function starting here |
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| 32 | // |
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| 33 | // INPUT: None |
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| 34 | // OUTPUT: None |
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| 35 | // RETURN: 1 |
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| 36 | // -------------------------------------------------------------------------------------------------------------------------- |
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| 37 | int main (void) |
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| 38 | { |
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| 39 | // DDRA = Port A Data Direction Register –> DDA7 DDA6 DDA5 DDA4 DDA3 DDA2 DDA1 DDA0 |
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| 40 | DDRA &= ~((1<<DDA7)|(1<<DDA6)|(1<<DDA5)|(1<<DDA4)|(1<<DDA3)); // those 5 keys are configured as input |
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| 41 | |||
| 42 | DDRB=0xFF; // all ports set as output as LEDs are connected here |
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| 43 | PORTB = 0x00; // switch off all LEDs |
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| 44 | |||
| 45 | init_ADC(); // initialize analog digial converter |
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| 46 | init_Timer0(); // initialize timer |
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| 47 | i2c_init(); // initialize I2C Bus (TWI) |
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| 48 | |||
| 49 | |||
| 50 | // ************************************************************************************************************************** |
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| 51 | void loop2ms(void) |
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| 52 | { |
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| 53 | // ADCSRA = Analog Digital Conversion Status Register A -> ADEN ADSC ADATE ADIF ADIE ADPS2 ADPS1 ADPS0 |
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| 54 | // ADSC = start conversion |
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| 55 | ADCSRA |= (1<<ADSC); |
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| 56 | |||
| 57 | while(!AdReady); // wait that ISR in analog.c is passed |
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| 58 | AdReady = 0; |
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| 59 | |||
| 60 | AdWertNick = AdWertNick / 2; // AdWertNick 0...511 |
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| 61 | Motor[0] = (AdWertNick); // desired turn rate is passed over to the motor front side |
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| 62 | Motor[1] = (AdWertNick); // desired turn rate is passed over to the motor rear side |
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| 63 | |||
| 64 | if (AdWertNick<32) PORTB = 0x01; // switch on LED 1 |
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| 65 | if (AdWertNick>31 && AdWertNick<64) PORTB = 0x02; // ... LED 2 |
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| 66 | if (AdWertNick>63 && AdWertNick<96) PORTB = 0x04; // ... LED 3 |
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| 67 | if (AdWertNick>95 && AdWertNick<128) PORTB = 0x08; // ... LED 4 |
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| 68 | if (AdWertNick>127 && AdWertNick<160) PORTB = 0x10; // ... LED 5 |
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| 69 | if (AdWertNick>159 && AdWertNick<192) PORTB = 0x20; // ... LED 6 |
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| 70 | if (AdWertNick>191 && AdWertNick<224) PORTB = 0x40; // ... LED 7 |
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| 71 | if (AdWertNick>223 ) PORTB = 0x80; // ... LED 8 |
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| 72 | } |
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| 73 | // ************************************************************************************************************************** |
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| 74 | |||
| 75 | |||
| 76 | |||
| 77 | // ************************************************************************************************************************** |
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| 78 | while (1) |
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| 79 | { |
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| 80 | if ( ((PINA & 0xF8)>> 3) == 0x01) break; // red button to finish program if necessary |
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| 81 | |||
| 82 | |||
| 83 | if(Flag2ms()) // toggle that loop every 2 ms |
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| 84 | { |
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| 85 | loop2ms(); |
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| 86 | } |
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| 87 | } |
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| 88 | // ************************************************************************************************************************** |
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| 89 | |||
| 90 | } |
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| 91 | // *** EOF : main() ************************************************************************************************************* |
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| 92 | |||
| 93 |