void main (void)
{
char ones, tens, hundreds;
unsigned int counter=0;
/* Initialize TWRPI-SLCD on TWR-K40X256 board*/
init_twrpi_lcd();
tlcd_all_on(); //Turn on all segments
time_delay_ms(5000); //Delay so can see all segments on
tlcd_all_off(); //Turn off all segments
tlcd_fsl_on(); //Turn on FSL segment
/* Increment counter and display value on SLCD */
while(1)
{
//Parse counter values to get each digit
ones=counter%10;
tens=(counter/10)%10;
hundreds=(counter/100)%10;
//Update SLCD
tlcd_set_numeric3(ones);
tlcd_set_numeric2(tens);
tlcd_set_numeric1(hundreds);
//Increment counter and keep below 1000
counter++;
counter=counter%1000;
//Delay for 250ms
time_delay_ms(250);
}
}
void cont_speAccProc() {
// debug only
int ones = 0;
int tens = 0;
int hundreds = 0;
float float_serv_angle = 0;
int error = 0;
int smoothing;
int averages[124];
int average;
int min_contrast = 60;
int offset = -4;
int serv_center = 1031;
int div_brake = 5;
int difference = 0;
int total = 0;
int calcwidth = -1;
int leftedge = 0;
int rightedge = 0;
int center = -1;
int linewidth = -1;
int i = 2;
int exp_line = 12;// Set expected line width
int tolerance = 4; //set the expected tolerance
//
for (i=2; i<126; i++){
smoothing = (adc_rawCameraData[i+0]+adc_rawCameraData[i-1]+adc_rawCameraData[i-2]+adc_rawCameraData[i+1]+adc_rawCameraData[i+2])/5;
averages[i-2] = smoothing;
}
for (i=0; i<100; i++){
difference = averages[i+12]-averages[i+11];
derivative[i] = abs(difference);
total = total+derivative[i];
}
average = total/100;
//Calculate the Cutoff value, and bound the cutoff //
cutoff = average*3; //////
if (cutoff < 8){
cutoff = 8;
}
else if (cutoff > 20){
cutoff = 20;
}
for (i=0; i<100; i++){
if (derivative[i] > cutoff){
flag[i] = 1;
}
else{
flag[i] = 0;
}
}
for (i=3; i<96; i++){
if (flag[i] == 1 && leftedge ==0){
if(flag[i-1] == 1 || flag[i-2] ==1 || flag[i+1] == 1 || flag[i+2] ==1){
leftedge = i;
while (flag[i+1]==1|| flag[i+2] ==1 ){
if(flag[i-1] == 1 || flag[i-2] ==1 || flag[i+1] == 1 || flag[i+2] ==1|| flag[i+3] ==1 || flag[i-3] ==1 ){
leftedge = i;
i++;
}
}
}
}
else if (flag[i] == 1 && leftedge !=0 && rightedge ==0 && i> leftedge +4 ){
if(flag[i-1] == 1 || flag[i-2] ==1 || flag[i+1] == 1 || flag[i+2] ==1 ){
while ((flag[i+1]==1 || flag[i+2]==1)&& i<96){
if(flag[i-1] == 1 || flag[i-2] ==1 || flag[i+1] == 1 || flag[i+2] ==1 || flag[i+3] ==1 || flag[i-3] ==1 ){
rightedge = i;
i++;
}
}
}
}
if (leftedge != 0 && rightedge != 0){
calcwidth = rightedge - leftedge;
if (calcwidth < (exp_line +tolerance) && calcwidth > (exp_line -tolerance)){ //Is it the size of the line?
if (averages[leftedge+8]>(averages[leftedge+16]+min_contrast) && (averages[rightedge+8]+min_contrast)<averages[rightedge+16]){ // Is it a white to black transition?
linewidth = calcwidth;
center = ((leftedge + rightedge)/2)+offset;
leftedge = rightedge;
rightedge = 0;
}
else if ((averages[leftedge+8]<(averages[leftedge+16]+min_contrast) && (averages[rightedge+8]+min_contrast)>averages[rightedge+16]&& (averages[rightedge+8]+min_contrast)>averages[rightedge+0])||(averages[leftedge+8]<(averages[leftedge+16]+min_contrast) && (averages[rightedge+8]+min_contrast)>averages[rightedge+16]&& (averages[rightedge+8]+min_contrast)>averages[rightedge+36])){
inframe = 1;
leftedge = rightedge;
rightedge = 0;
}
else { // Is it a white to black transition?
leftedge = rightedge; //We don't care, so set leftedge to be rightedge and keep looking
rightedge = 0;
}
}
else{
leftedge = rightedge;
rightedge = 0;
}
}
}
if (inframe == 1 && center != -1 && center > 25 && center < 75){
inframe = 0;
numcounts = 5;
}
else if (inframe == 0 && numcounts > 0 && center != -1 && center > 25 && center < 75){
numcounts--;
}
else if (inframe == 0 && numcounts == 0 && center != -1 && lapsremaining > 0){
lapsremaining--;
numcounts = -1;
}
cont_lineWidth = linewidth;
if (center >= 0){
cont_lineLoc = center;
}
ones=lapsremaining%10;
tens=(lapsremaining/10)%10;
hundreds=(lapsremaining/100)%10;
//Update SLCD
tlcd_set_numeric3(ones); // ones
tlcd_set_numeric2(tens); // tens
tlcd_set_numeric1(hundreds); // hundreds
////////////////////////////////////////////
////////////////////////////////////////////
/// Check to see if we've lost the line ///
if (center >= 0){
if (lostline > 0){
lostline--;
}
}
else if (center == -1 && lostline < 500){
lostline++;
}
////PID///////
if (cont_lineLoc >= 0){
error = -(50-cont_lineLoc);
P = error * kp;
I = (I+error)*ki;
if (I > 50){I = 50;}
D = error - prev_error;
D = D * kd;
correctionval = P+I+D;
if (correctionval > 50){
correctionval = 50;
}
else if (correctionval < -50){
correctionval = -50;
}
correctionval = (correctionval*serv_center)/50;
correctionval = (serv_center+correctionval);
serv_angle = correctionval;
}
else{
serv_angle = oldservangle;
}
prev_error = error;
/// Update Servo //////
oldservangle = serv_angle;
serv_update();
float_serv_angle = serv_angle;
//////Set Motor Speeds///////
if (lapsremaining <= 0 || lostline >= 50){
mot_motorSpeedA1 = 1000;
mot_motorSpeedA2 = 000;
mot_motorSpeedB1 = 1000;
mot_motorSpeedB2 = 000;
mot_update();
}
else if (serv_angle < 1431 && serv_angle > 631 ){
mot_motorSpeedA1 = 0000;
mot_motorSpeedA2 = speed;
mot_motorSpeedB1 = 0000;
mot_motorSpeedB2 = speed;
mot_update();
}
else{
if( serv_angle < 631 ){
mot_motorSpeedA1 = 0000;
mot_motorSpeedA2 = speed - (((serv_center-float_serv_angle)/serv_center)*(((speed/diff_div)*speed)/differential_in));
mot_motorSpeedB1 = 0000;
mot_motorSpeedB2 = speed + ((((serv_center-float_serv_angle)/serv_center)*(((speed/diff_div)*speed)/differential_out)));// - (delta_cent * 30);
if (mot_motorSpeedA2 < 0 ){
mot_motorSpeedA1 = abs(speed - (((serv_center-float_serv_angle)/serv_center)*(((speed/diff_div)*speed)/differential_in)));
mot_motorSpeedA2 = 0000;
}
if (abs(D) > div_brake){
mot_motorSpeedB1 = 0000;
mot_motorSpeedB2 = speed - ((((serv_center-float_serv_angle)/serv_center)*(((speed/diff_div)*speed)/differential_out_brake)));// - (delta_cent * 30);
}
mot_update();
}
else if (serv_angle > 1431){
mot_motorSpeedA1 = 0000;
mot_motorSpeedA2 = speed + ((((float_serv_angle-serv_center)/serv_center)*(((speed/diff_div)*speed)/differential_out)));
mot_motorSpeedB1 = 0000;
mot_motorSpeedB2 = speed - (((float_serv_angle-serv_center)/serv_center)*(((speed/diff_div)*speed)/differential_in));
if (mot_motorSpeedB2 < 0){
mot_motorSpeedB1 = abs(speed - (((float_serv_angle-serv_center)/serv_center)*(((speed/diff_div)*speed)/differential_in)));
mot_motorSpeedB2 = 0000;
}
if (abs(D) > div_brake){
mot_motorSpeedA1 = 0000;
mot_motorSpeedA2 = speed - ((((float_serv_angle-serv_center)/serv_center)*(((speed/diff_div)*speed)/differential_out_brake)));
}
mot_update();
}
}
}