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Spring 2014, ECE 4180 project, Georgia Institute of Technolgoy. This is the autonomous driver program for the Robotics Cat and Mouse program.
Dependencies: IMUfilter ADXL345_I2C mbed ITG3200 USBHost mbed-rtos
HumanPosition.h
- Committer:
- Strikewolf
- Date:
- 2014-04-30
- Revision:
- 3:0a6e4d139b86
- Parent:
- 1:dacf7db790f6
File content as of revision 3:0a6e4d139b86:
#include <math.h> #include "USBHostMouse.h" #define PFLAG_ON 0 #define PFLAG_OFF 1 #define PFLAG_CALIB 2 #define SERIAL_BUFFER_SIZE 20 #define PACKET_SIZE 10 #define X_HUMAN_UPPER 1 #define X_HUMAN_LOWER 2 #define Y_HUMAN_UPPER 4 #define Y_HUMAN_LOWER 5 //Convert from radians to degrees. #define toDegrees(x) (x * 57.2957795) //Quadrant enum typedef enum {FORWARD_LEFT, FORWARD_RIGHT, BACKWARD_LEFT, BACKWARD_RIGHT} QUADRANT; // updates xy position if on, does nothing if off extern char PFlag = PFLAG_ON; // variables to keep track of coordinate position double x_position = 0; double y_position = 0; // human position Serial xbee(p13, p14); DigitalOut rst1(p15); /* mouse event handler */ void onMouseEvent(uint8_t buttons, int8_t x_mickey, int8_t y_mickey, int8_t z) { // mouse movements are in mickeys. 1 mickey = ~230 DPI = ~1/230th of an inch double y_temp = y_mickey / 232.6 * 100; double g_temp = imuFilter.getYaw(); // determine direction we are facing and add to that direction //y_position += y_temp; //x_position += y_temp * tan(g_temp); double dx = 0; double dy = 0; QUADRANT quadrant; if (toDegrees(g_temp) > 0 && toDegrees(g_temp) <= 90) quadrant = FORWARD_LEFT; if (toDegrees(g_temp) < 0 && toDegrees(g_temp) >= -90) quadrant = FORWARD_RIGHT; if (toDegrees(g_temp) > 90 && toDegrees(g_temp) <= 180) quadrant = BACKWARD_LEFT; if (toDegrees(g_temp) < -90 && toDegrees(g_temp) >= -180) quadrant = BACKWARD_RIGHT; switch (quadrant) { case FORWARD_LEFT: dy = y_temp * cos(g_temp); dx = -y_temp * sin(g_temp); break; case FORWARD_RIGHT: dy = y_temp * cos(g_temp); dx = -y_temp * sin(g_temp); break; case BACKWARD_LEFT: dy = -y_temp * sin(g_temp); dx = y_temp * cos(g_temp); break; case BACKWARD_RIGHT: dy = y_temp * sin(g_temp); dx = -y_temp * cos(g_temp); break; } x_position += dx; y_position += dy; // pc.printf("sin(g): %f, cos(g): %f\n\r", sin(g_temp), cos(g_temp)); // pc.printf("DEBUG: dx: %f, dy: %f, gyro: %f, quadrant: %d\n\r", dx, dy, toDegrees(g_temp), quadrant); // pc.printf("x: %f, y: %f, dx: %f, dy: %f, g: %f, q: %d\n\r", x_position, y_position, dx, dy, toDegrees(g_temp), quadrant); } /* positioning system thread function */ void PositionSystemMain(void const *) { USBHostMouse mouse; while(!gameOver) { // try to connect a USB mouse while(!mouse.connect() && !gameOver) Thread::wait(500); // when connected, attach handler called on mouse event mouse.attachEvent(onMouseEvent); // wait until the mouse is disconnected while(mouse.connected() && !gameOver) Thread::wait(500); } } void sendPosition(void const *) { // temp variables int x = 0; int y = 0; char a = 0; char b = 0; char c = 0; char d = 0; // sample current xy position x = (int) x_position; y = (int) y_position; pc.printf("Sending: %d %d...\n\r", x, y); // break down x coordinate by byte a = x >> 24; b = x >> 16; c = x >> 8; d = x; // put each byte on the buffer xbee.putc('x'); xbee.putc(a); xbee.putc(b); xbee.putc(c); xbee.putc(d); // break down y coordinate by byte a = y >> 24; b = y >> 16; c = y >> 8; d = y; // put each byte on the buffer xbee.putc('y'); xbee.putc(a); xbee.putc(b); xbee.putc(c); xbee.putc(d); pc.printf("Send complete.\n\r"); // wait for a possible game over response wait(0.25); if(xbee.readable() && xbee.getc() == 'd') { gameOver = true; pc.printf("gameOver Received!\n\r"); endGame(); } }