Kristopher Bahar
/
Shiftbright_Hall
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main.cpp
00001 /* ----- 4180 Final Design Project ----- 00002 Bicycle Wheel LED Image Display 00003 */ 00004 #include "mbed.h" 00005 00006 InterruptIn hall(p28); // This interupt is used to poll the Hall Effect IC 00007 DigitalOut latch(p8); 00008 DigitalOut enable(p9); 00009 Timer timer; // This timer is used to time the wheel's rotation 00010 00011 int LEDRowNumber = 10; // This is equal to the number of divisions the user has setup for his or her image 00012 int cycle_time = 0; // Global Variable for the full rotation 00013 int rowIndex = 0; // Index for shifting through the Image array 00014 bool top_wheel = false; // Variable Debug LED Circuit 00015 int color = 0; // Variable for shifting through colors 00016 int j; // For Loop index for LED debug circuit 00017 float adj_cycle_time = 0; // Variable used to hold "cycle_time / LEDRowNumber" 00018 00019 //Cycles through different colors on RGB LED 00020 SPI spi(p5, p6, p7); 00021 00022 //Use SPI hardware to write color values to LED driver chip 00023 void RGB_LED(int red, int green, int blue) { 00024 unsigned int low_color=0; 00025 unsigned int high_color=0; 00026 high_color=(blue<<4)|((red&0x3C0)>>6); 00027 low_color=(((red&0x3F)<<10)|(green)); 00028 spi.write(high_color); 00029 spi.write(low_color); 00030 latch=1; 00031 latch=0; 00032 } 00033 00034 //Interupt Routine used to detect when the magnet passes the Hall Effect Sensor 00035 void intRoutine() { 00036 cycle_time = timer.read_ms(); //This is only called then the Hall Effect IC returns a "0" 00037 adj_cycle_time = cycle_time / LEDRowNumber; //Calculates the time between sending each LED Row within the color Arrays 00038 timer.reset(); //Resets the Timer 00039 rowIndex = 0; //Resets the Row to be sent so the image always stays in the relatively same place 00040 color=0; //Resets the color Index for the LED sample wheel so the image always stays in the same place 00041 } 00042 00043 int main() { 00044 hall.mode(PullUp); //Initializes the PullUp Resistor for the Hall Effect Sensor 00045 hall.fall(&intRoutine); //Initializes the Interrupt Routine for the Hall Effect Sensor (on falling edge) 00046 00047 spi.format(16,0); //Initializes the Shiftbright LED Chain 00048 spi.frequency(500000); 00049 enable=0; 00050 latch=0; 00051 wait(2); 00052 00053 timer.start(); //Starts the Timer 00054 00055 /*//----- Color Initialization for Debug Program ----- 00056 int red=0; 00057 int green=0; 00058 int blue=0; 00059 */ 00060 00061 /* //----- Spiral Pattern ----- 00062 int red[10][10]={50,0,0,0,0,0,0,0,0,0 00063 ,0,50,0,0,0,0,0,0,0,0 00064 ,0,0,50,0,0,0,0,0,0,0 00065 ,0,0,0,50,0,0,0,0,0,0 00066 ,0,0,0,0,50,0,0,0,0,0 00067 ,0,0,0,0,0,50,0,0,0,0 00068 ,0,0,0,0,0,0,50,0,0,0 00069 ,0,0,0,0,0,0,0,50,0,0 00070 ,0,0,0,0,0,0,0,0,50,0 00071 ,0,0,0,0,0,0,0,0,0,50}; 00072 int green[10][10]={50,0,0,0,0,0,0,0,0,0 00073 ,0,50,0,0,0,0,0,0,0,0 00074 ,0,0,50,0,0,0,0,0,0,0 00075 ,0,0,0,50,0,0,0,0,0,0 00076 ,0,0,0,0,50,0,0,0,0,0 00077 ,0,0,0,0,0,50,0,0,0,0 00078 ,0,0,0,0,0,0,50,0,0,0 00079 ,0,0,0,0,0,0,0,50,0,0 00080 ,0,0,0,0,0,0,0,0,50,0 00081 ,0,0,0,0,0,0,0,0,0,50}; 00082 int blue[10][10]={50,0,0,0,0,0,0,0,0,0 00083 ,0,50,0,0,0,0,0,0,0,0 00084 ,0,0,50,0,0,0,0,0,0,0 00085 ,0,0,0,50,0,0,0,0,0,0 00086 ,0,0,0,0,50,0,0,0,0,0 00087 ,0,0,0,0,0,50,0,0,0,0 00088 ,0,0,0,0,0,0,50,0,0,0 00089 ,0,0,0,0,0,0,0,50,0,0 00090 ,0,0,0,0,0,0,0,0,50,0 00091 ,0,0,0,0,0,0,0,0,0,50}; 00092 */ 00093 00094 //----- Pac Man ----- 00095 00096 int red[10][10]={50,50,50,50,50,50,50,50,50,50 00097 ,50,50,50,50,50,50,50,50,50,50 00098 ,50,50,50,50,50,50,50,50,50,50 00099 ,50,50,50,50,50,50,50,50,50,50 00100 ,50,50,50,50,50,50,0,0,50,50 00101 ,50,50,50,50,50,50,50,50,50,50 00102 ,0,0,0,0,0,0,0,0,0,0 00103 ,0,0,0,0,0,0,0,0,0,0 00104 ,50,50,50,50,50,50,50,50,50,50 00105 ,50,50,50,50,50,50,50,50,50,50}; 00106 00107 int green[10][10]={50,50,50,50,50,50,50,50,50,50 00108 ,50,50,50,50,50,50,50,50,50,50 00109 ,50,50,50,50,50,50,50,50,50,50 00110 ,50,50,50,50,50,50,50,50,50,50 00111 ,50,50,50,50,50,50,0,0,50,50 00112 ,50,50,50,50,50,50,50,50,50,50 00113 ,0,0,0,0,0,0,0,0,0,0 00114 ,0,0,0,0,0,0,0,0,0,0 00115 ,50,50,50,50,50,50,50,50,50,50 00116 ,50,50,50,50,50,50,50,50,50,50}; 00117 00118 int blue[10][10]={0,0,0,0,0,0,0,0,0,0 00119 ,0,0,0,0,0,0,0,0,0,0 00120 ,0,0,0,0,0,0,0,0,0,0 00121 ,0,0,0,0,0,0,0,0,0,0 00122 ,0,0,0,0,0,0,0,0,0,0 00123 ,0,0,0,0,0,0,0,0,0,0 00124 ,0,0,0,0,0,0,0,0,0,0 00125 ,0,0,0,0,0,0,0,0,0,0 00126 ,0,0,0,0,0,0,0,0,0,0 00127 ,0,0,0,0,0,0,0,0,0,0}; 00128 00129 00130 /*// -----Blue Triangle: From Bitmap Image Program ----- 00131 int red[36][10]={0,0,0,0,0,0,0,0,0,0, 00132 0,0,0,0,0,42,42,42,42,42, 00133 0,0,0,0,0,42,42,42,42,42, 00134 0,0,0,0,0,0,0,42,42,42, 00135 0,0,0,0,0,0,0,0,0,42, 00136 0,0,0,0,0,0,0,0,0,0, 00137 0,0,0,0,0,0,0,0,0,42, 00138 0,0,0,0,0,0,0,0,0,42, 00139 0,0,0,0,0,0,0,0,42,42, 00140 0,0,0,0,0,0,0,0,42,42, 00141 0,0,0,0,0,0,0,0,42,42, 00142 0,0,0,0,0,0,0,0,0,42, 00143 0,0,0,0,0,0,0,0,0,42, 00144 0,0,0,0,0,0,0,0,0,0, 00145 0,0,0,0,0,0,0,0,0,42, 00146 0,0,0,0,0,0,0,42,42,42, 00147 0,0,0,0,0,42,42,42,42,42, 00148 0,0,0,0,0,42,42,42,42,42, 00149 0,0,0,0,0,0,0,0,0,0, 00150 0,0,0,0,0,0,0,0,0,0, 00151 0,0,0,0,0,0,0,0,0,0, 00152 0,0,0,0,0,0,0,0,0,0, 00153 0,0,0,0,0,0,0,0,0,0, 00154 0,0,0,0,0,0,0,0,0,0, 00155 0,0,0,0,0,0,0,0,0,0, 00156 0,0,0,0,0,0,0,0,0,0, 00157 0,0,0,0,0,0,0,0,0,0, 00158 0,0,0,0,0,0,0,0,0,0, 00159 0,0,0,0,0,0,0,0,0,0, 00160 0,0,0,0,0,0,0,0,0,0, 00161 0,0,0,0,0,0,0,0,0,0, 00162 0,0,0,0,0,0,0,0,0,0, 00163 0,0,0,0,0,0,0,0,0,0, 00164 0,0,0,0,0,0,0,0,0,0, 00165 0,0,0,0,0,0,0,0,0,0, 00166 0,0,0,0,0,0,0,0,0,0}; 00167 00168 int green[36][10]={0,0,0,0,42,42,42,42,42,42, 00169 0,0,0,0,0,0,0,0,0,0, 00170 0,0,0,0,0,0,0,0,0,0, 00171 0,0,0,0,0,0,0,0,0,0, 00172 0,0,0,0,0,0,0,0,0,0, 00173 0,0,0,0,0,0,0,0,0,0, 00174 0,0,0,0,0,0,0,0,0,0, 00175 0,0,0,0,0,0,0,0,0,0, 00176 0,0,0,0,0,0,0,0,0,0, 00177 0,0,0,0,0,0,0,0,0,0, 00178 0,0,0,0,0,0,0,0,0,0, 00179 0,0,0,0,0,0,0,0,0,0, 00180 0,0,0,0,0,0,0,0,0,0, 00181 0,0,0,0,0,0,0,0,0,0, 00182 0,0,0,0,0,0,0,0,0,0, 00183 0,0,0,0,0,0,0,0,0,0, 00184 0,0,0,0,0,0,0,0,0,0, 00185 0,0,0,0,0,0,0,0,0,0, 00186 0,0,0,0,42,42,42,42,42,42, 00187 0,0,0,0,42,42,42,42,42,42, 00188 0,0,0,0,42,42,42,42,42,42, 00189 0,0,0,0,42,42,42,42,42,42, 00190 0,0,0,0,42,42,42,42,42,42, 00191 0,0,0,0,42,42,42,42,42,42, 00192 0,0,0,0,42,42,42,42,42,42, 00193 0,0,0,0,0,42,42,42,42,42, 00194 0,0,0,0,0,0,0,42,42,42, 00195 0,0,0,0,0,0,0,0,42,42, 00196 0,0,0,0,0,0,0,42,42,42, 00197 0,0,0,0,0,42,42,42,42,42, 00198 0,0,0,0,0,42,42,42,42,42, 00199 0,0,0,0,42,42,42,42,42,42, 00200 0,0,0,0,42,42,42,42,42,42, 00201 0,0,0,0,42,42,42,42,42,42, 00202 0,0,0,0,42,42,42,42,42,42, 00203 0,0,0,0,42,42,42,42,42,42}; 00204 00205 int blue[36][10]={42,42,42,42,0,0,0,0,0,0, 00206 42,42,42,42,42,0,0,0,0,0, 00207 42,42,42,42,42,0,0,0,0,0, 00208 42,42,42,42,42,42,42,0,0,0, 00209 42,42,42,42,42,42,42,42,42,0, 00210 42,42,42,42,42,42,42,42,42,42, 00211 42,42,42,42,42,42,42,42,42,0, 00212 42,42,42,42,42,42,42,42,42,0, 00213 42,42,42,42,42,42,42,42,0,0, 00214 42,42,42,42,42,42,42,42,0,0, 00215 42,42,42,42,42,42,42,42,0,0, 00216 42,42,42,42,42,42,42,42,42,0, 00217 42,42,42,42,42,42,42,42,42,0, 00218 42,42,42,42,42,42,42,42,42,42, 00219 42,42,42,42,42,42,42,42,42,0, 00220 42,42,42,42,42,42,42,0,0,0, 00221 42,42,42,42,42,0,0,0,0,0, 00222 42,42,42,42,42,0,0,0,0,0, 00223 42,42,42,42,0,0,0,0,0,0, 00224 42,42,42,42,0,0,0,0,0,0, 00225 42,42,42,42,0,0,0,0,0,0, 00226 42,42,42,42,0,0,0,0,0,0, 00227 42,42,42,42,0,0,0,0,0,0, 00228 42,42,42,42,0,0,0,0,0,0, 00229 42,42,42,42,0,0,0,0,0,0, 00230 42,42,42,42,42,0,0,0,0,0, 00231 42,42,42,42,42,42,42,0,0,0, 00232 42,42,42,42,42,42,42,42,0,0, 00233 42,42,42,42,42,42,42,0,0,0, 00234 42,42,42,42,42,0,0,0,0,0, 00235 42,42,42,42,42,0,0,0,0,0, 00236 42,42,42,42,0,0,0,0,0,0, 00237 42,42,42,42,0,0,0,0,0,0, 00238 42,42,42,42,0,0,0,0,0,0, 00239 42,42,42,42,0,0,0,0,0,0, 00240 42,42,42,42,0,0,0,0,0,0}; 00241 */ 00242 while(1) { 00243 //led1 = hall; // Used for Debugging the Hall Effect IC 00244 //led2 = !hall; // Used for Debugging the Hall Effect IC 00245 00246 //----- Code for Cycling through a 2D Picture Array ----- 00247 wait_ms(adj_cycle_time); 00248 for(int i=9;i>=0;i--){ //If we update without any waiting, the LEDs change colors super fast, and you won't notice the shifting LEDs 00249 RGB_LED( red[rowIndex][i], green[rowIndex][i], blue[rowIndex][i]); 00250 } 00251 rowIndex++; 00252 if(rowIndex>=LEDRowNumber){ 00253 rowIndex = 0; 00254 } 00255 00256 00257 /* //----- Debug Code: Rainbow Pattern ------ (Pre 2D Color Array) 00258 wait_ms(adj_cycle_time); 00259 top_wheel = true; 00260 if (top_wheel && (color == 0)) { 00261 // Red, Color 0 00262 //printf("RED RED RED\r\n"); 00263 red = 50; 00264 blue = 0; 00265 green = 0; 00266 for(j = 0; j < 10; j++) 00267 RGB_LED(red, green, blue); 00268 top_wheel = false; 00269 color++; 00270 } 00271 if (top_wheel && (color == 1)) { 00272 //printf("ORANGE ORANGE ORANGE\r\n"); 00273 // Orange, Color 1 00274 red = 50; 00275 blue = 0; 00276 green = 25; 00277 for(j = 0; j < 10; j++) 00278 RGB_LED(red, green, blue); 00279 top_wheel = false; 00280 color++; 00281 } 00282 if (top_wheel && (color == 2)) { 00283 //printf("YELLOW YELLOW YELLOW\r\n"); 00284 // Yellow, Color 2 00285 red = 50; 00286 blue = 0; 00287 green = 50; 00288 for(j = 0; j < 10; j++) 00289 RGB_LED(red, green, blue); 00290 top_wheel = false; 00291 color++; 00292 } 00293 if (top_wheel && (color == 3)) { 00294 //printf("GREEN GREEN GREEN\r\n"); 00295 // Green, Color 3 00296 red = 0; 00297 blue = 0; 00298 green = 50; 00299 for(j = 0; j < 10; j++) 00300 RGB_LED(red, green, blue); 00301 top_wheel = false; 00302 color++; 00303 } 00304 if (top_wheel && (color == 4)) { 00305 //printf("CYAN CYAN CYAN\r\n"); 00306 // Cyan, Color 4 00307 red = 0; 00308 blue = 50; 00309 green = 50; 00310 for(j = 0; j < 10; j++) 00311 RGB_LED(red, green, blue); 00312 top_wheel = false; 00313 color++; 00314 } 00315 if (top_wheel && (color == 5)) { 00316 //printf("BLUE BLUE BLUE\r\n"); 00317 // Blue, Color 5 00318 red = 0; 00319 blue = 50; 00320 green = 0; 00321 for(j = 0; j < 10; j++) 00322 RGB_LED(red, green, blue); 00323 top_wheel = false; 00324 color++; 00325 } 00326 if (top_wheel && (color == 6)) { 00327 //printf("PURPLE PURPLE PURPLE\r\n"); 00328 //Purple, Color 6 00329 red = 50; 00330 blue = 50; 00331 green = 0; 00332 for(j = 0; j < 10; j++) 00333 RGB_LED(red, green, blue); 00334 top_wheel = false; 00335 color = 0; 00336 } 00337 */ 00338 } 00339 }
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