1 | /***********************************************************************************************/
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2 | int16_t calculate_temperature(uint16_t adc){
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3 | //t=0,64593625*adc-155,4
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4 | //#warning "TODO: update equation" done ;)
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5 | int32_t adc_temp = 13229 * (uint32_t) adc;
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6 | adc_temp = adc_temp / 2048;
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7 | adc_temp = adc_temp - 1554;
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8 | adc_temp = adc_temp / 10;
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9 | return (int16_t) adc_temp;
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10 | }
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11 | /***********************************************************************************************/
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12 | void sprint_temperature(char* str,int16_t temperature){
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13 | uint8_t one = 0, ten = 0, houndred = 0;
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14 | bool _signed = false;
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15 | if(temperature < 0){
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16 | temperature *= -1;
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17 | str[0] = '-';
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18 | _signed = true;
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19 | if(temperature > 99) temperature = 99;
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20 | }
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21 | one = temperature % 10;
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22 | ten = (temperature % 100) / 10;
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23 | houndred = (temperature % 1000) / 100;
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24 | if(houndred == 0){
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25 | if(ten == 0){
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26 | if(_signed){
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27 | str[1] = str[0];
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28 | }else{
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29 | str[1] = ' ';
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30 | }
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31 | str[0] = ' ';
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32 | }else{
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33 | if(_signed){
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34 | str[0] = str[0];
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35 | }else{
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36 | str[0] = ' ';
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37 | }
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38 | str[1] = ten + '0';
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39 | }
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40 | }else{
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41 | str[0] = houndred + '0';
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42 | str[1] = ten + '0';
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43 | }
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44 | str[2] = one + '0';
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45 | }
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46 | /***********************************************************************************************/
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47 | void adc_init(void){
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48 | uint16_t result;
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49 | ADMUX |= (1<<REFS0); // VCC with external capacitor at AREF
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50 | ADCSRA |= (1<<ADEN) |/* (1<<ADPS2) | (1<<ADPS1) | */(1<<ADPS0); // ADC enabled, prescaler: 1
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51 | ADCSRA |= (1<<ADSC);
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52 | while(ADCSRA & (1<<ADSC)){;}
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53 | result = ADCW; //dummy readout
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54 | //ADCSRB = 0x00;
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55 | }
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56 | /***********************************************************************************************/
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57 | uint16_t read_adc(uint8_t portbit){
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58 | /*uint16_t result;*/
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59 | //ADMUX |= portbit;
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60 | //uint16_to_string(str5,ADMUX);
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61 | ADCSRA |= (1<<ADSC);
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62 | while(ADCSRA & (1<<ADSC)){;}
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63 | /*result = ADCW; //dummy readout
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64 | result = 0;
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65 | for(i=0;i<4;i++){
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66 | while(ADCSRA & (1<<ADSC)){;}
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67 | result += ADCW;
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68 | }
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69 | //ADMUX &= ~portbit;*/
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70 | return ADCW;
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71 | }
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72 | static void avr_init(void)
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73 | {
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74 |
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75 | //Enable SPI
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76 | spi_init();
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77 | adc_init();
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78 |
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79 | //init communication
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80 | //*
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81 | USART_Init(0);
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82 |
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83 |
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84 | RELAY_DDR |= (1<<RELAY_DISPLAY) | (1<<RELAY_CAM);
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85 |
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86 | DDRC |= (1<<PORTC5);
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87 |
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88 | CTRL_DDR |= (1<<REQUEST) | (1<<DISPLAY_READY);
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89 | CTRL_PORT |= (1<<REQUEST) | (1<<DISPLAY_READY);
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90 | //*/
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91 | //Set power mode
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92 | set_sleep_mode(SLEEP_MODE_IDLE);
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93 |
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94 | //init PAL SYNC port
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95 | set_bit(DDRC,7);
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96 | //B.4 is sync:1000 ohm + diode to 75 ohm resistor
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97 | //MOSI is video:330 ohm + diode to 75 ohm resistor
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98 |
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99 | // Initialize Sync for PAL
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100 | OCR1A = 1024; //One PAL line 64us
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101 | TCCR1B = (1<<WGM12)|(1<<CS10);//full speed; clear-on-match
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102 | TCCR1A = 0x00; //turn off pwm and oc lines
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103 | TIMSK = 1<<OCIE1A; //enable interrupt from Timer1 CompareA
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104 | return;
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105 | }
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bas_m16.png
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