Push for Students
Dependencies: BNO055_fusion Madpulse ServoIn ServoOut mavlink_emaxx mbed
Fork of Madpulse_Speed_Control_temp by
madpulse_ctrl.cpp
- Committer:
- jdawkins
- Date:
- 2017-11-15
- Revision:
- 1:f4c9926fb4c9
- Parent:
- 0:daea75c21ac1
- Child:
- 2:2bb375ab3b2b
File content as of revision 1:f4c9926fb4c9:
#include "madpulse.h" #define BUFFER_SIZE 1024 #define FIVE_HZ_LOOP 5.0 #define LOG_LOOP_FREQ 25.0 // Four messages are taking turns logging, it should be about 25Hz overall #define CTRL_LOOP_FREQ 100.0 #define MAIN_LOOP_FREQ 300.0 #define LOG_IMU 1 #define LOG_MAG 2 #define LOG_EUL 3 #define LOG_ODO 4 #define VEH_ID 1 #define PI (3.14159) // Instantiate Serial Ports Serial pc(USBTX, USBRX, 115200); // USB UART Terminal Serial xbee(p13,p14,115200); // Instantiate Class Objects BNO055 imu(p9,p10); // BNO055 Class Object I2C(SDL,SCL) ServoIn CH1(p15); // Read RC Servo Channel 1 (steering) Pin 15 ServoIn CH2(p16); // Read RC Servo Channel 2 (Throttle) Pin 16 InterruptIn wheel_irq(p17); // Attach Interrupt for Wheel Encoder Pin 17 ServoOut Steer(p21); // Steer command object on Pin 21 goes to steering servo ServoOut Throttle(p22); // Throttle command object on Pin 22 goes to esc Ticker ctrl_ticker; // Create Instance of Madpulse class which manages low level vehicle functions and exposes a set of methods for // controlling the vehicle MadPulse mp(VEH_ID,&xbee,&imu,&CH1,&CH2,&wheel_irq,&Steer,&Throttle); /////////////////////////////////////////////// // Define Control Gains and Controller Variable ////////////////////////////////////////////// float psi_est,psi_est_old; float spd_err,spd_err_i; float spd,des_spd; float dist; Timer t; // Create Timer int log_it; // Iterator for Spacing logging of different messages uint8_t buf[BUFFER_SIZE]; float t_start,t_log,t_ctrl,t_5hz,t_run; // Create timer variables float dt; float str,thr,wheel_spd; float wrapTo2pi(float ang); float wrapTopi(float ang); bool rc_conn,auto_flag,log_flag; void controlLoop(){ dt = t.read()-t_ctrl; if(auto_flag){ // If vehicle is in Auto Mode spd = mp.getFreq()/27.8119; // Convert from counts per second to meters/second str = 0.001; if(t.read()-t_run < 1){ thr = 0.1; // Set throttle, range (-1 to 1) }else{ thr = 0.0; } }else{ str = ((CH1.servoPulse-1500.0)/600.0); // Convert Pulse to Normalized Command +/- 1 thr = ((CH2.servoPulse-1500.0)/600.0); // Convert Pulse to Normalized Command +/- 1 } t_ctrl = t.read(); } void logData(){ // Accel Data: mp.accel.x,mp.accel.y,mp.accel.z // Gyro Data: mp.gyro.x,mp.gyro.y,mp.gyro.z // Mag Data: mp.mag.x,mp.mag.y,mp.mag.z // Euler Data: mp.euler.roll,mp.euler.pitch, mp.euler.yaw // Encoder Data: mp.getCounts(), mp.getFreq() xbee.printf("%.3f,%d,%.3f,%.3f,%.3f\r\n",t.read()-t_run,mp.getCounts(),spd,thr,str); } void initializeControl(){ printf("Initialize Control\r\n"); t_run = t.read(); } void stopControl(){ printf("Stop Control\r\n"); } void readRCSignal(){ if(CH1.servoPulse == 0 || CH2.servoPulse == 0) { //RC Reciever must be connected For Car to be armed rc_conn = false; } else { rc_conn = true; } // end if(Channels connected) if( (abs(CH1.servoPulse-1500) > 200) || (abs(CH2.servoPulse-1500) > 200)){ auto_flag = 0; } } void readKeyboard(){ if(xbee.readable()) { char c = xbee.getc(); if(c == 'H' || c == 'h') { xbee.printf("Command List...\r\n"); xbee.printf("h - Display this prompt and return\r\n"); xbee.printf("l - Toggle Logging\r\n"); xbee.printf("r - Run, switch vehicle to auto mode\r\n"); xbee.printf("s - Stop, stop vehicle autor control\r\n"); xbee.printf("Enter Command\r\n"); } if(c == 'L' || c == 'l') { log_flag = !log_flag; //toggle logging flag } if(c == 'R' || c == 'r') { auto_flag = true; log_flag = true; initializeControl(); } if(c == 'S' || c == 's') { auto_flag = false; log_flag = false; stopControl(); } } } int main() { log_it = 0; auto_mode = 0; // Default Steering and Throttle commands to neutral Steer.write(1500); // Write Steering Pulse Throttle.write(1500); t.start(); t_start = t.read(); t_log = t.read(); t_ctrl = t.read(); t_5hz = t.read(); while(1) { auto_LED = auto_flag; dwm_LED = rc_conn; readKeyboard(); // Check for Input from Keyboard over xbee // check for servo pulse from either channel of receiver module readRCSignal(); if(t.read()-t_5hz > (1.0/FIVE_HZ_LOOP)) { // 5 Hz loop intended for debugging print statements t_5hz = t.read(); } if(t.read()-t_ctrl > (1.0/CTRL_LOOP_FREQ)) { // 100 Hz loop for calling control loop mp.getAccel(); mp.getGyro(); mp.getMag(); mp.getEuler(); mp.getSpeed(); controlLoop(); t_ctrl = t.read(); } if(t.read()-t_log > (1.0/LOG_LOOP_FREQ)) { // Faster loop for logging data for plotting and analysis if(log_flag){ logData(); } t_log = t.read(); } if(rc_conn) { // str = ((CH1.servoPulse-1500.0)/600.0); // Convert Pulse to Normalized Command +/- 1 // thr = ((CH2.servoPulse-1500.0)/600.0); // Convert Pulse to Normalized Command +/- 1 mp.setSteer(str); mp.setThrottle(thr); } else { Steer.write(1500); // Write Steering Pulse Throttle.write(1500); // mp.setSteer(str); // mp.setThrottle(thr); } wait(1.0/MAIN_LOOP_FREQ); } // End While 1 Loop } // End Main Function float wrapTo2pi(float ang) { if(ang > 2*PI) { ang = ang - 2*PI; } if(ang < 0) { ang = ang + 2*PI; } return ang; } float wrapTopi(float ang) { if(ang > PI) { ang = ang - 2*PI; } if(ang < -PI) { ang = ang + 2*PI; } return ang; }