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Rev | Author | Line No. | Line |
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1184 | pangu | 1 | #include "main.h" |
2 | |||
3 | volatile unsigned int CountMilliseconds = 0; |
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4 | volatile static unsigned int tim_main; |
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5 | volatile unsigned char UpdateMotor = 0; |
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6 | volatile unsigned int cntKompass = 0; |
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7 | volatile unsigned int beeptime = 0; |
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8 | volatile unsigned char SendSPI = 0, ServoActive = 0; |
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9 | |||
10 | unsigned int BeepMuster = 0xffff; |
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11 | int ServoValue = 0; |
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12 | |||
13 | volatile int16_t ServoNickValue = 0; |
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14 | volatile int16_t ServoRollValue = 0; |
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15 | |||
16 | |||
17 | enum { |
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18 | STOP = 0, |
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19 | CK = 1, |
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20 | CK8 = 2, |
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21 | CK64 = 3, |
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22 | CK256 = 4, |
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23 | CK1024 = 5, |
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24 | T0_FALLING_EDGE = 6, |
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25 | T0_RISING_EDGE = 7 |
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26 | }; |
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27 | |||
28 | |||
29 | SIGNAL (SIG_OVERFLOW0) // 8kHz |
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30 | { |
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31 | static unsigned char cnt_1ms = 1,cnt = 0; |
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32 | unsigned char pieper_ein = 0; |
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33 | // TCNT0 -= 250;//TIMER_RELOAD_VALUE; |
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34 | if(SendSPI) SendSPI--; |
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35 | if(!cnt--) |
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36 | { |
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37 | cnt = 9; |
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38 | cnt_1ms++; |
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39 | cnt_1ms %= 2; |
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40 | if(!cnt_1ms) UpdateMotor = 1; |
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41 | CountMilliseconds++; |
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42 | } |
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43 | |||
44 | if(beeptime > 1) |
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45 | { |
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46 | beeptime--; |
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47 | if(beeptime & BeepMuster) |
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48 | { |
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49 | pieper_ein = 1; |
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50 | } |
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51 | else pieper_ein = 0; |
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52 | } |
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53 | else |
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54 | { |
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55 | pieper_ein = 0; |
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56 | BeepMuster = 0xffff; |
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57 | } |
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58 | |||
59 | |||
60 | if(pieper_ein) |
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61 | { |
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62 | if(PlatinenVersion == 10) PORTD |= (1<<2); // Speaker an PORTD.2 |
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63 | else PORTC |= (1<<7); // Speaker an PORTC.7 |
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64 | } |
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65 | else |
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66 | { |
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67 | if(PlatinenVersion == 10) PORTD &= ~(1<<2); |
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68 | else PORTC &= ~(1<<7); |
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69 | } |
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70 | |||
71 | if(EE_Parameter.GlobalConfig & CFG_KOMPASS_AKTIV) |
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72 | { |
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73 | if(PINC & 0x10) |
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74 | { |
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75 | cntKompass++; |
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76 | } |
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77 | else |
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78 | { |
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79 | if((cntKompass) && (cntKompass < 362)) |
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80 | { |
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81 | cntKompass += cntKompass / 41; |
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82 | if(cntKompass > 10) KompassValue = cntKompass - 10; else KompassValue = 0; |
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83 | } |
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84 | // if(cntKompass < 10) cntKompass = 10; |
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85 | // KompassValue = (unsigned long)((unsigned long)(cntKompass-10)*720L + 1L) / 703L; |
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86 | KompassRichtung = ((540 + KompassValue - KompassStartwert) % 360) - 180; |
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87 | cntKompass = 0; |
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88 | } |
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89 | } |
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90 | } |
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91 | |||
92 | |||
93 | // ----------------------------------------------------------------------- |
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94 | |||
95 | unsigned int SetDelay (unsigned int t) |
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96 | { |
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97 | // TIMSK0 &= ~_BV(TOIE0); |
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98 | return(CountMilliseconds + t + 1); |
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99 | // TIMSK0 |= _BV(TOIE0); |
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100 | } |
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101 | |||
102 | // ----------------------------------------------------------------------- |
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103 | char CheckDelay(unsigned int t) |
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104 | { |
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105 | // TIMSK0 &= ~_BV(TOIE0); |
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106 | return(((t - CountMilliseconds) & 0x8000) >> 9); |
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107 | // TIMSK0 |= _BV(TOIE0); |
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108 | } |
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109 | |||
110 | // ----------------------------------------------------------------------- |
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111 | void Delay_ms(unsigned int w) |
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112 | { |
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113 | unsigned int akt; |
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114 | akt = SetDelay(w); |
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115 | while (!CheckDelay(akt)); |
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116 | } |
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117 | |||
118 | void Delay_ms_Mess(unsigned int w) |
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119 | { |
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120 | unsigned int akt; |
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121 | akt = SetDelay(w); |
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122 | while (!CheckDelay(akt)) if(AdReady) {AdReady = 0; ANALOG_ON;} |
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123 | } |
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124 | |||
125 | /*****************************************************/ |
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126 | /* Initialize Timer 2 */ |
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127 | /*****************************************************/ |
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128 | // The timer 2 is used to generate the PWM at PD7 (J7) |
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129 | // to control a camera servo for nick compensation. |
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130 | void TIMER2_Init(void) |
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131 | { |
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132 | uint8_t sreg = SREG; |
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133 | |||
134 | // disable all interrupts before reconfiguration |
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135 | cli(); |
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136 | |||
137 | // set PD7 as output of the PWM for nick servo |
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138 | DDRD |= (1<<DDD7); |
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139 | PORTD &= ~(1<<PORTD7); // set PD7 to low |
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140 | |||
141 | DDRC |= (1<<DDC6); // set PC6 as output (Reset for HEF4017) |
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142 | HEF4017R_ON; |
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143 | // Timer/Counter 2 Control Register A |
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144 | |||
145 | // Timer Mode is FastPWM with timer reload at OCR2A (Bits: WGM22 = 1, WGM21 = 1, WGM20 = 1) |
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146 | // PD7: Normal port operation, OC2A disconnected, (Bits: COM2A1 = 0, COM2A0 = 0) |
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147 | // PD6: Normal port operation, OC2B disconnected, (Bits: COM2B1 = 0, COM2B0 = 0) |
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148 | TCCR2A &= ~((1<<COM2A1)|(1<<COM2A0)|(1<<COM2B1)|(1<<COM2B0)); |
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149 | TCCR2A |= (1<<WGM21)|(1<<WGM20); |
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150 | |||
151 | // Timer/Counter 2 Control Register B |
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152 | |||
153 | // Set clock divider for timer 2 to SYSKLOCK/32 = 20MHz / 32 = 625 kHz |
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154 | // The timer increments from 0x00 to 0xFF with an update rate of 625 kHz or 1.6 us |
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155 | // hence the timer overflow interrupt frequency is 625 kHz / 256 = 2.44 kHz or 0.4096 ms |
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156 | |||
157 | // divider 32 (Bits: CS022 = 0, CS21 = 1, CS20 = 1) |
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158 | TCCR2B &= ~((1<<FOC2A)|(1<<FOC2B)|(1<<CS22)); |
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159 | TCCR2B |= (1<<CS21)|(1<<CS20)|(1<<WGM22); |
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160 | |||
161 | // Initialize the Timer/Counter 2 Register |
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162 | TCNT2 = 0; |
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163 | |||
164 | // Initialize the Output Compare Register A used for PWM generation on port PD7. |
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165 | OCR2A = 255; |
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166 | TCCR2A |= (1<<COM2A1); // set or clear at compare match depends on value of COM2A0 |
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167 | |||
168 | // Timer/Counter 2 Interrupt Mask Register |
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169 | // Enable timer output compare match A Interrupt only |
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170 | TIMSK2 &= ~((1<<OCIE2B)|(1<<TOIE2)); |
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171 | TIMSK2 |= (1<<OCIE2A); |
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172 | |||
173 | SREG = sreg; |
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174 | } |
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175 | |||
176 | //---------------------------- |
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177 | void Timer_Init(void) |
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178 | { |
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179 | tim_main = SetDelay(10); |
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180 | TCCR0B = CK8; |
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181 | TCCR0A = (1<<COM0A1)|(1<<COM0B1)|3;//fast PWM |
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182 | OCR0A = 0; |
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183 | OCR0B = 120; |
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184 | TCNT0 = (unsigned char)-TIMER_RELOAD_VALUE; // reload |
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185 | //OCR1 = 0x00; |
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186 | |||
187 | TIMSK0 |= _BV(TOIE0); |
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188 | } |
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189 | |||
190 | |||
191 | /*****************************************************/ |
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192 | /* Control Servo Position */ |
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193 | /*****************************************************/ |
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194 | |||
195 | ISR(TIMER2_COMPA_vect) |
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196 | { |
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197 | |||
198 | // frame len 22.5 ms = 14063 * 1.6 us |
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199 | // stop pulse: 0.3 ms = 188 * 1.6 us |
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200 | // min servo pulse: 0.6 ms = 375 * 1.6 us |
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201 | // max servo pulse: 2.4 ms = 1500 * 1.6 us |
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202 | // resolution: 1500 - 375 = 1125 steps |
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203 | |||
204 | #define IRS_RUNTIME 127 |
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205 | #define PPM_STOPPULSE 188 |
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206 | // #define PPM_FRAMELEN (14063 |
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207 | #define PPM_FRAMELEN (1757 * EE_Parameter.ServoNickRefresh) |
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208 | #define MINSERVOPULSE 375 |
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209 | #define MAXSERVOPULSE 1500 |
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210 | #define SERVORANGE (MAXSERVOPULSE - MINSERVOPULSE) |
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211 | |||
212 | static uint8_t PulseOutput = 0; |
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213 | static uint16_t RemainingPulse = 0; |
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214 | static uint16_t ServoFrameTime = 0; |
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215 | static uint8_t ServoIndex = 0; |
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216 | |||
217 | #define MULTIPLYER 4 |
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218 | static int16_t ServoNickOffset = (255 / 2) * MULTIPLYER; // initial value near center positon |
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219 | |||
220 | if(PlatinenVersion < 20) |
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221 | { |
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222 | //--------------------------- |
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223 | // Nick servo state machine |
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224 | //--------------------------- |
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225 | if(!PulseOutput) // pulse output complete |
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226 | { |
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227 | if(TCCR2A & (1<<COM2A0)) // we had a low pulse |
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228 | { |
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229 | TCCR2A &= ~(1<<COM2A0);// make a high pulse |
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230 | RemainingPulse = MINSERVOPULSE + SERVORANGE/2; // center position ~ 1.5ms |
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231 | |||
232 | ServoNickOffset = (ServoNickOffset * 3 + (int16_t)Parameter_ServoNickControl * MULTIPLYER) / 4; // lowpass offset |
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233 | ServoNickValue = ServoNickOffset; // offset (Range from 0 to 255 * 3 = 765) |
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234 | if(EE_Parameter.ServoNickCompInvert & 0x01) |
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235 | { // inverting movement of servo |
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236 | ServoNickValue += (int16_t)( ( (int32_t)EE_Parameter.ServoNickComp * MULTIPLYER * (IntegralNick / 128L ) ) / (256L) ); |
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237 | } |
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238 | else |
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239 | { // non inverting movement of servo |
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240 | ServoNickValue -= (int16_t)( ( (int32_t)EE_Parameter.ServoNickComp * MULTIPLYER * (IntegralNick / 128L ) ) / (256L) ); |
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241 | } |
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242 | // limit servo value to its parameter range definition |
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243 | if(ServoNickValue < ((int16_t)EE_Parameter.ServoNickMin * MULTIPLYER) ) |
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244 | { |
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245 | ServoNickValue = (int16_t)EE_Parameter.ServoNickMin * MULTIPLYER; |
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246 | } |
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247 | else |
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248 | if(ServoNickValue > ((int16_t)EE_Parameter.ServoNickMax * MULTIPLYER) ) |
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249 | { |
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250 | ServoNickValue = (int16_t)EE_Parameter.ServoNickMax * MULTIPLYER; |
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251 | } |
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252 | |||
253 | RemainingPulse += ServoNickValue - (256 / 2) * MULTIPLYER; // shift ServoNickValue to center position |
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254 | |||
255 | ServoNickValue /= MULTIPLYER; |
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256 | DebugOut.Analog[20] = ServoNickValue; |
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257 | |||
258 | // range servo pulse width |
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259 | if(RemainingPulse > MAXSERVOPULSE ) RemainingPulse = MAXSERVOPULSE; // upper servo pulse limit |
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260 | else if(RemainingPulse < MINSERVOPULSE ) RemainingPulse = MINSERVOPULSE; // lower servo pulse limit |
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261 | // accumulate time for correct update rate |
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262 | ServoFrameTime = RemainingPulse; |
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263 | } |
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264 | else // we had a high pulse |
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265 | { |
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266 | TCCR2A |= (1<<COM2A0); // make a low pulse |
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267 | RemainingPulse = PPM_FRAMELEN - ServoFrameTime; |
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268 | } |
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269 | // set pulse output active |
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270 | PulseOutput = 1; |
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271 | } |
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272 | } // EOF Nick servo state machine |
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273 | else |
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274 | { |
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275 | //----------------------------------------------------- |
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276 | // PPM state machine, onboard demultiplexed by HEF4017 |
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277 | //----------------------------------------------------- |
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278 | if(!PulseOutput) // pulse output complete |
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279 | { |
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280 | if(TCCR2A & (1<<COM2A0)) // we had a low pulse |
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281 | { |
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282 | TCCR2A &= ~(1<<COM2A0);// make a high pulse |
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283 | |||
284 | if(ServoIndex == 0) // if we are at the sync gap |
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285 | { |
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286 | RemainingPulse = PPM_FRAMELEN - ServoFrameTime; // generate sync gap by filling time to full frame time |
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287 | ServoFrameTime = 0; // reset servo frame time |
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288 | HEF4017R_ON; // enable HEF4017 reset |
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289 | } |
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290 | else // servo channels |
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291 | { |
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292 | RemainingPulse = MINSERVOPULSE + SERVORANGE/2; // center position ~ 1.5ms |
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293 | switch(ServoIndex) // map servo channels |
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294 | { |
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295 | case 1: // Nick Compensation Servo |
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296 | ServoNickOffset = (ServoNickOffset * 3 + (int16_t)Parameter_ServoNickControl * MULTIPLYER) / 4; // lowpass offset |
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297 | ServoNickValue = ServoNickOffset; // offset (Range from 0 to 255 * 3 = 765) |
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298 | if(EE_Parameter.ServoNickCompInvert & 0x01) |
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299 | { // inverting movement of servo |
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300 | ServoNickValue += (int16_t)( ( (int32_t)EE_Parameter.ServoNickComp * MULTIPLYER * (IntegralNick / 128L ) ) / (256L) ); |
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301 | } |
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302 | else |
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303 | { // non inverting movement of servo |
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304 | ServoNickValue -= (int16_t)( ( (int32_t)EE_Parameter.ServoNickComp * MULTIPLYER * (IntegralNick / 128L ) ) / (256L) ); |
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305 | } |
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306 | // limit servo value to its parameter range definition |
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307 | if(ServoNickValue < ((int16_t)EE_Parameter.ServoNickMin * MULTIPLYER) ) |
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308 | { |
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309 | ServoNickValue = (int16_t)EE_Parameter.ServoNickMin * MULTIPLYER; |
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310 | } |
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311 | else |
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312 | if(ServoNickValue > ((int16_t)EE_Parameter.ServoNickMax * MULTIPLYER) ) |
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313 | { |
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314 | ServoNickValue = (int16_t)EE_Parameter.ServoNickMax * MULTIPLYER; |
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315 | } |
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316 | RemainingPulse += ServoNickValue - (256 / 2) * MULTIPLYER; // shift ServoNickValue to center position |
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317 | ServoNickValue /= MULTIPLYER; |
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318 | DebugOut.Analog[20] = ServoNickValue; |
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319 | break; |
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320 | |||
321 | default: // other servo channels |
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322 | RemainingPulse += 2 * PPM_in[ServoIndex]; // add channel value, factor of 2 because timer 1 increments 3.2µs |
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323 | break; |
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324 | } |
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325 | // range servo pulse width |
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326 | if(RemainingPulse > MAXSERVOPULSE ) RemainingPulse = MAXSERVOPULSE; // upper servo pulse limit |
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327 | else if(RemainingPulse < MINSERVOPULSE ) RemainingPulse = MINSERVOPULSE; // lower servo pulse limit |
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328 | // substract stop pulse width |
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329 | RemainingPulse -= PPM_STOPPULSE; |
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330 | // accumulate time for correct sync gap |
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331 | ServoFrameTime += RemainingPulse; |
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332 | } |
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333 | } |
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334 | else // we had a high pulse |
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335 | { |
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336 | TCCR2A |= (1<<COM2A0); // make a low pulse |
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337 | // set pulsewidth to stop pulse width |
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338 | RemainingPulse = PPM_STOPPULSE; |
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339 | // accumulate time for correct sync gap |
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340 | ServoFrameTime += RemainingPulse; |
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341 | if(ServoActive && SenderOkay > 180) HEF4017R_OFF; // disable HEF4017 reset |
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342 | ServoIndex++; // change to next servo channel |
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343 | if(ServoIndex > EE_Parameter.ServoNickRefresh) ServoIndex = 0; // reset to the sync gap |
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344 | } |
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345 | // set pulse output active |
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346 | PulseOutput = 1; |
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347 | } |
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348 | } // EOF PPM state machine |
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349 | |||
350 | // General pulse output generator |
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351 | if(RemainingPulse > (255 + IRS_RUNTIME)) |
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352 | { |
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353 | OCR2A = 255; |
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354 | RemainingPulse -= 255; |
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355 | } |
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356 | else |
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357 | { |
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358 | if(RemainingPulse > 255) // this is the 2nd last part |
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359 | { |
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360 | if((RemainingPulse - 255) < IRS_RUNTIME) |
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361 | { |
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362 | OCR2A = 255 - IRS_RUNTIME; |
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363 | RemainingPulse -= 255 - IRS_RUNTIME; |
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364 | |||
365 | } |
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366 | else // last part > ISR_RUNTIME |
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367 | { |
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368 | OCR2A = 255; |
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369 | RemainingPulse -= 255; |
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370 | } |
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371 | } |
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372 | else // this is the last part |
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373 | { |
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374 | OCR2A = RemainingPulse; |
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375 | RemainingPulse = 0; |
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376 | PulseOutput = 0; // trigger to stop pulse |
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377 | } |
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378 | } // EOF general pulse output generator |
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379 | } |