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Rev | Author | Line No. | Line |
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428 | killagreg | 1 | #include <avr/boot.h> |
2 | |||
3 | #include <avr/io.h> |
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4 | #include <avr/interrupt.h> |
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5 | |||
6 | #include "main.h" |
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7 | #include "timer0.h" |
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8 | #include "uart0.h" |
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9 | #include "uart1.h" |
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10 | #include "fat16.h" |
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11 | #include "led.h" |
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12 | #include "menu.h" |
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13 | #include "printf_P.h" |
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14 | #include "analog.h" |
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15 | #include "gps.h" |
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16 | #include "button.h" |
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17 | |||
18 | |||
19 | #define FOLLOWME_INTERVAL 1000 // 1 second update |
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20 | #define CELLUNDERVOLTAGE 32 // lowest allowed voltage/cell; 32 = 3.2V |
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21 | |||
22 | #ifdef USE_FOLLOWME |
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23 | int16_t UBat = 120; |
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24 | int16_t Zellenzahl = 0; |
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25 | int16_t PowerOn = 0; |
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26 | int16_t i = 0; |
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27 | int16_t delay = 0; |
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28 | int16_t FollowMe_active = 0; |
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29 | #endif |
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30 | |||
31 | uint16_t Error = 0; |
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32 | |||
33 | typedef enum |
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34 | { |
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35 | STATE_UNDEFINED, |
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36 | STATE_IDLE, |
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37 | STATE_SEND_FOLLOWME |
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38 | } SysState_t; |
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39 | |||
40 | int main (void) |
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41 | { |
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42 | static uint16_t FollowMe_Timer = 0; |
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43 | static SysState_t SysState = STATE_UNDEFINED; |
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44 | |||
45 | // disable interrupts global |
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46 | cli(); |
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47 | |||
48 | // disable watchdog |
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49 | MCUSR &=~(1<<WDRF); |
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50 | WDTCSR |= (1<<WDCE)|(1<<WDE); |
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51 | WDTCSR = 0; |
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52 | |||
53 | // initalize modules |
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54 | LED_Init(); |
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55 | LEDRED_ON; |
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56 | TIMER0_Init(); |
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57 | USART0_Init(); |
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58 | UBX_Init(); |
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59 | USART1_Init(); |
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60 | ADC_Init(); |
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61 | Button_Init(); |
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62 | // enable interrupts global |
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63 | sei(); |
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64 | |||
65 | Fat16_Init(); |
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66 | |||
67 | LEDRED_OFF; |
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68 | LEDGRN_ON; |
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69 | |||
70 | // try to initialize the FAT 16 filesystem on the SD-Card |
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71 | Fat16_Init(); |
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72 | |||
73 | #ifdef USE_SDLOGGER |
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74 | printf("\r\n\r\nHW: SD-Logger"); |
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75 | #endif |
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76 | #ifdef USE_FOLLOWME |
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77 | printf("\r\n\r\nHW: Follow-Me"); |
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78 | #endif |
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79 | printf("\r\nFollow Me\n\rSoftware:V%d.%d%c ",VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH + 'a'); |
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80 | printf("\r\n------------------------------"); |
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81 | printf("\r\n"); |
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82 | |||
83 | |||
84 | //BeepTime = 2000; |
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85 | |||
86 | LCD_Clear(); |
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87 | |||
88 | FollowMe_Timer = SetDelay(FOLLOWME_INTERVAL); |
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89 | |||
90 | while (1) |
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91 | { |
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92 | // get gps data to update the follow me position |
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93 | GPS_Update(); |
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94 | |||
95 | // check for button action and change state resectively |
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96 | if(GetButton()) |
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97 | { |
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98 | BeepTime = 200; |
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99 | |||
100 | switch(SysState) |
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101 | { |
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102 | case STATE_IDLE: |
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103 | if(!Error) SysState = STATE_SEND_FOLLOWME; // activate followme only of no error has occured |
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104 | break; |
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105 | |||
106 | case STATE_SEND_FOLLOWME: |
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107 | SysState = STATE_IDLE; |
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108 | break; |
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109 | |||
110 | default: |
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111 | SysState = STATE_IDLE; |
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112 | break; |
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113 | } |
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114 | |||
115 | } |
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116 | |||
117 | // state machine |
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118 | switch(SysState) |
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119 | { |
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120 | case STATE_SEND_FOLLOWME: |
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121 | if(CheckDelay(FollowMe_Timer)) // time for next message? |
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122 | { |
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123 | if(FollowMe.Position.Status == NEWDATA) // if new |
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124 | { // update remaining data |
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125 | FollowMe_Timer = SetDelay(FOLLOWME_INTERVAL); // reset timer |
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126 | FollowMe.Heading = -1; // invalid heading |
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127 | FollowMe.ToleranceRadius = 1; // 1 meter |
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128 | FollowMe.HoldTime = 60; // go home after 60s without any update |
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129 | FollowMe.Event_Flag = 0; // no event |
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130 | FollowMe.reserve[0] = 0; // reserve |
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131 | FollowMe.reserve[1] = 0; // reserve |
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132 | FollowMe.reserve[2] = 0; // reserve |
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133 | FollowMe.reserve[3] = 0; // reserve |
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134 | Request_SendFollowMe = 1; // triggers serial tranmission |
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135 | |||
136 | } |
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137 | else // now new position avalable (maybe bad gps signal condition) |
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138 | { |
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139 | FollowMe_Timer = SetDelay(FOLLOWME_INTERVAL/4); // reset timer on higer frequency |
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140 | } |
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141 | LEDGRN_TOGGLE; // indication of active follow me |
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142 | FollowMe_active = 1; |
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143 | } |
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144 | break; |
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145 | |||
146 | case STATE_IDLE: |
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147 | // do nothing |
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148 | LEDGRN_ON; |
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149 | FollowMe_active = 0; |
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150 | break; |
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151 | |||
152 | default: |
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153 | // triger to idle state |
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154 | SysState = STATE_IDLE; |
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155 | break; |
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156 | |||
157 | } |
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158 | |||
159 | |||
160 | // restart ADConversion if ready |
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161 | if(ADReady) |
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162 | { |
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163 | DebugOut.Analog[0] = Adc0; |
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164 | DebugOut.Analog[1] = Adc1; |
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165 | DebugOut.Analog[2] = Adc2; |
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166 | DebugOut.Analog[3] = Adc3; |
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167 | DebugOut.Analog[4] = Adc4; |
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168 | DebugOut.Analog[5] = Adc5; |
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169 | DebugOut.Analog[6] = Adc6; |
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170 | DebugOut.Analog[7] = Adc7; |
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171 | |||
172 | #ifdef USE_FOLLOWME |
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173 | // AVcc = 5V --> 5V = 1024 counts |
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174 | // the voltage at the voltage divider reference point is 0.8V less that the UBat |
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175 | // because of the silicon diode inbetween. |
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176 | // voltage divider R2=10K, R3=3K9 |
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177 | // UAdc4 = R3/(R3+R2)*UBat= 3.9/(3.9+10)*UBat = UBat/3.564 |
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178 | UBat = (3 * UBat + (64 * Adc4) / 368) / 4; |
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179 | DebugOut.Analog[8] = UBat; |
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180 | |||
181 | // check for zellenzahl |
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182 | if(PowerOn < 100) |
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183 | { |
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184 | if(UBat<=84) Zellenzahl = 2; |
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185 | else Zellenzahl = 3; |
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186 | PowerOn++; |
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187 | } |
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188 | DebugOut.Analog[16] = Zellenzahl; |
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189 | DebugOut.Analog[17] = PowerOn; |
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190 | |||
191 | //show recognised Zellenzahl to user |
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192 | if(i < Zellenzahl && PowerOn >= 100 && BeepTime == 0 && delay > 1000) |
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193 | { |
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194 | BeepTime = 100; |
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195 | i++; |
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196 | delay = 0; |
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197 | } |
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198 | if(delay < 1500) delay++; |
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199 | |||
200 | // monitor battery undervoltage [...||(UBat<74) as temporary workaround to protect 2s lipo packs] |
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201 | if(((UBat < Zellenzahl * CELLUNDERVOLTAGE)||(UBat < 74)) && (PowerOn >= 100)) |
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202 | { // sound for low battery |
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203 | BeepModulation = 0x0300; |
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204 | if(!BeepTime) |
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205 | { |
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206 | BeepTime = 6000; // 0.6 seconds |
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207 | } |
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208 | Error |= ERROR_LOW_BAT; |
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209 | } |
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210 | else |
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211 | { |
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212 | Error &= ~ERROR_LOW_BAT; |
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213 | } |
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214 | #endif |
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215 | ADReady = 0; |
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216 | ADC_Enable(); // restart ad conversion sequence |
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217 | } |
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218 | |||
219 | // serial communication |
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220 | USART0_ProcessRxData(); |
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221 | USART0_TransmitTxData(); |
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222 | |||
223 | // indicate error, blinking code tbd. |
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224 | if(Error) LEDRED_ON; |
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225 | else LEDRED_OFF; |
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226 | |||
227 | } |
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228 | return (1); |
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229 | } |
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230 |