int main(){
signal(SIGINT, &sig_handler);
uint16_t rotary_value = 0;
float value = 0.0f;
mraa_pwm_context pwm1;
mraa_aio_context rotary;
pwm1 = mraa_pwm_init(5);
rotary = mraa_aio_init(0);
if (rotary == NULL || pwm1 == NULL) {
return 1;
printf("Broken\n");
}
mraa_pwm_period_ms(pwm1, 20);
mraa_pwm_enable(pwm1, 1);
while(isrunning){
rotary_value = mraa_aio_read(rotary);
//convert to 0.00 to 1.00 scale
value = ((float) rotary_value)/102;
//convert to 0.025 to 0.1 scale (avoid rattle)
value = value/13.33;
value = value + 0.025;
if (value >= .25){
mraa_pwm_enable(pwm1, 1);
printf("%f\n", value);
mraa_pwm_write(pwm1, value);
}
else{
// mraa_pwm_write(pwm1, 0);
mraa_pwm_enable(pwm1, 0);
}
}
mraa_pwm_write(pwm1, 0.025f);
mraa_pwm_enable(pwm1, 0);
return 0;
}
void tb6612::diffDrive(float dcA, float dcB)
{
_dcA=dcA;
_dcB=dcB;
if (dcA < 0)
{
revA();
dcA *= -1;
}
else
{
fwdA();
}
if (dcB < 0)
{
revB();
dcB *= -1;
}
else
{
fwdB();
}
mraa_pwm_write(_pwmA, dcA);
mraa_pwm_write(_pwmB, dcB);
}
void speed_control(mraa_pwm_context in1, mraa_pwm_context in2, float speed) {
speed = speed/100;
if (speed >= 0) {
mraa_pwm_write(in2, 1.0f);
mraa_pwm_write(in1, 1.0f - speed);
}
else if (speed < 0) {
mraa_pwm_write(in1, 1.0f);
mraa_pwm_write(in2, 1.0f + speed);
}
}
void right_turn ()
{
float speed1 = mraa_pwm_read(pwm1);
float speed2 = mraa_pwm_read(pwm2);
if (speed1 == speed2) {
mraa_pwm_write(pwm2, speed2/3);
}
else if (speed2 > speed1) {
mraa_pwm_write(pwm1, speed2);
mraa_pwm_write(pwm2, speed1);
}
}
void set_B(float speed)
{
if (speed > 0 && speed <= 1.0f) {
mraa_pwm_write(pwm1, speed);
forward_B();
}
else if (speed < 0 && speed >= -1.0f) {
mraa_pwm_write(pwm1, -speed);
reverse_B();
}
else
{
mraa_pwm_write(pwm1, 0.);
brake_B();
}
}
tb6612::tb6612():
_dcA(0.0), _dcB(0.0)
{
// _pwmA is pwm channel 0, on pin 20 in mraa
_pwmA = mraa_pwm_init(20);
mraa_pwm_period_us(_pwmA, 1000);
mraa_pwm_enable(_pwmA, 1);
// _pwmB is pwm channel 1, on pin 14 in mraa
_pwmB = mraa_pwm_init(14);
mraa_pwm_period_us(_pwmB, 1000);
mraa_pwm_enable(_pwmB, 1);
mraa_pwm_write(_pwmA, 0.01);
mraa_pwm_write(_pwmB, 0.01);
mraa_pwm_write(_pwmA, 0.0);
mraa_pwm_write(_pwmB, 0.0);
// _A1 and _A2 are on GPIO48 and GPIO47, respectively, which are pins 33 and
// 46 in mraa, respectively.
_A1 = mraa_gpio_init(33);
_A2 = mraa_gpio_init(46);
mraa_gpio_dir(_A1, MRAA_GPIO_OUT);
mraa_gpio_mode(_A1, MRAA_GPIO_STRONG);
mraa_gpio_write(_A1, 1);
mraa_gpio_dir(_A2, MRAA_GPIO_OUT);
mraa_gpio_mode(_A2, MRAA_GPIO_STRONG);
mraa_gpio_write(_A2, 1);
// _B1 and _B2 are on GPIO15 and GPIO14, respectively, which are pins 48 and
// 36, respectively
_B1 = mraa_gpio_init(48);
_B2 = mraa_gpio_init(36);
mraa_gpio_dir(_B1, MRAA_GPIO_OUT);
mraa_gpio_mode(_B1, MRAA_GPIO_STRONG);
mraa_gpio_write(_B1, 1);
mraa_gpio_dir(_B2, MRAA_GPIO_OUT);
mraa_gpio_mode(_B2, MRAA_GPIO_STRONG);
mraa_gpio_write(_B2, 1);
// _standbyPin is on GPIO49, which is pin 47 in mraa
_standbyPin = mraa_gpio_init(47);
mraa_gpio_dir(_standbyPin, MRAA_GPIO_OUT);
mraa_gpio_mode(_standbyPin, MRAA_GPIO_STRONG);
mraa_gpio_write(_standbyPin, 1);
}
int rotate_left (int i)
{
while(i!=0)
{mraa_pwm_enable(en1,1);
mraa_pwm_enable(en2,1);
mraa_pwm_write(en1,1.0f);
mraa_pwm_write(en2,1.0f);
mraa_gpio_write(in1,0);
mraa_gpio_write(in2,1);
mraa_gpio_write(in3,0);
mraa_gpio_write(in4,1);
usleep(( 50000)); ///chagne the value accordingly
printf("front");
mraa_gpio_write(in1,0);
mraa_gpio_write(in2,0);
mraa_gpio_write(in3,0);
mraa_gpio_write(in4,0);
mraa_pwm_enable(en1,0);
mraa_pwm_enable(en2,0);
i--;
}
return 0;
}
int main()
{
mraa_gpio_context in1;
mraa_gpio_context in2;
mraa_gpio_context in3;
mraa_gpio_context in4;
in1=mraa_gpio_init(7);
in2=mraa_gpio_init(8);
in3=mraa_gpio_init(9);
in4=mraa_gpio_init(10);
mraa_pwm_context en1;
en1=mraa_pwm_init(6);
mraa_pwm_context en2;
en2=mraa_pwm_init(5);
mraa_gpio_dir(in1,MRAA_GPIO_OUT);
mraa_gpio_dir(in2,MRAA_GPIO_OUT);
mraa_pwm_enable(en1,1);
mraa_pwm_period_ms(en1,20);
mraa_gpio_dir(in3,MRAA_GPIO_OUT);
mraa_gpio_dir(in4,MRAA_GPIO_OUT);
mraa_pwm_enable(en2,1);
mraa_pwm_period_ms(en2,20);
mraa_pwm_write(en1,1.0f);
mraa_pwm_write(en2,1.0f);
mraa_gpio_write(in1,1);
mraa_gpio_write(in2,0);
mraa_gpio_write(in3,0);
mraa_gpio_write(in4,1);
printf("right90");
usleep(2300000);
mraa_gpio_write(in1,0);
mraa_gpio_write(in2,0);
mraa_gpio_write(in3,0);
mraa_gpio_write(in4,0);
mraa_pwm_enable(en1,0);
mraa_pwm_enable(en2,0);
usleep(2300000);
return 0;
}
void straight (float speed)
{
if (speed >= 0 && speed <= 1.0f) {
mraa_pwm_write(pwm1, speed);
mraa_pwm_write(pwm2, speed);
forward_A();
forward_B();
}
else if (speed < 0 && speed >= -1.0f) {
mraa_pwm_write(pwm1, -speed);
mraa_pwm_write(pwm2, -speed);
reverse_A();
reverse_B();
}
else
printf("Wrong speed value. Choose between -1.0 and 1.0\n");
}
int rotate_left90()
{
mraa_pwm_enable(en1,1);
mraa_pwm_enable(en2,1);
mraa_pwm_write(en1,1.0f);
mraa_pwm_write(en2,1.0f);
mraa_gpio_write(in1,0);
mraa_gpio_write(in2,1);
mraa_gpio_write(in3,0);
mraa_gpio_write(in4,1);
printf("left90");
usleep(2300000);
mraa_gpio_write(in1,0);
mraa_gpio_write(in2,0);
mraa_gpio_write(in3,0);
mraa_gpio_write(in4,0);
mraa_pwm_enable(en1,0);
mraa_pwm_enable(en2,0);
//usleep(2300000);
return 0;
}
void BuzzerAlarm::start(note tone, float vol, int delay) {
mraa_pwm_period_us(myAlarm, tone);
float volume;
// éviter les valeurs impossibles
if (vol > 1.0) volume = 1.0;
else if (vol < 0.0) volume = 0.0;
else volume = vol;
// la volume correspond au rapport cyclique, 50% sera donc la volume max
mraa_pwm_write(myAlarm, volume*0.5);
usleep(delay*1000);
BuzzerAlarm::stop();
}
int move_front (int i)
{
while(i!=0)
{
mraa_pwm_enable(en1,1);
mraa_pwm_enable(en2,1);
mraa_pwm_write(en1,1.0f);
mraa_pwm_write(en2,1.0f);
mraa_gpio_write(in1,0);
mraa_gpio_write(in2,1);
mraa_gpio_write(in3,0);
mraa_gpio_write(in4,1);
usleep(50000);
printf("front");
mraa_gpio_write(in1,0);
mraa_gpio_write(in2,0);
mraa_gpio_write(in3,0);
mraa_gpio_write(in4,0);
mraa_pwm_enable(en1,0);
mraa_pwm_enable(en2,0);
i--;
}
return 0;
}
void PWM_Run(void)
{
mraa_pwm_period_ms(pwm, TIME_PERIOD);
//printf("Time Period set to %dms\n", TIME_PERIOD);
mraa_pwm_enable(pwm,1);
//printf("PWM enabled\n");
mraa_pwm_write(pwm, DUTY_CYCLE);
//printf("Duty Cycle set to %f%%\n", (100 * DUTY_CYCLE));
//printf("PWM running\n");
}
void initialize()
{
pwm1 = mraa_pwm_init(20);
mraa_pwm_period_us(pwm1, 870);
mraa_pwm_enable(pwm1, 1);
pwm2 = mraa_pwm_init(14);
mraa_pwm_period_us(pwm2, 870);
mraa_pwm_enable(pwm2, 1);
mraa_pwm_write(pwm1, 0.01);
mraa_pwm_write(pwm2, 0.01);
mraa_pwm_write(pwm1, 0.0);
mraa_pwm_write(pwm2, 0.0);
A1 = mraa_gpio_init(48);
A2 = mraa_gpio_init(36);
mraa_gpio_dir(A1, MRAA_GPIO_OUT);
mraa_gpio_mode(A1, MRAA_GPIO_STRONG);
mraa_gpio_write(A1, 1);
mraa_gpio_dir(A2, MRAA_GPIO_OUT);
mraa_gpio_mode(A2, MRAA_GPIO_STRONG);
mraa_gpio_write(A2, 1);
B1 = mraa_gpio_init(33);
B2 = mraa_gpio_init(46);
mraa_gpio_dir(B1, MRAA_GPIO_OUT);
mraa_gpio_mode(B1, MRAA_GPIO_STRONG);
mraa_gpio_write(B1, 1);
mraa_gpio_dir(B2, MRAA_GPIO_OUT);
mraa_gpio_mode(B2, MRAA_GPIO_STRONG);
mraa_gpio_write(B2, 1);
standbyPin = mraa_gpio_init(47);
mraa_gpio_dir(standbyPin, MRAA_GPIO_OUT);
mraa_gpio_mode(standbyPin, MRAA_GPIO_STRONG);
mraa_gpio_write(standbyPin, 1);
}
FskErr mraaPWMSetDutyCycle(FskPinPWM pin, double value)
{
mraaPWM mpwm = (mraaPWM)pin;
int result = mraa_pwm_write(mpwm->context, value);
if (MRAA_SUCCESS != result)
return kFskErrOperationFailed;
if (!mpwm->enabled) {
mraa_pwm_enable(mpwm->context, 1);
mpwm->enabled = 1;
}
return kFskErrNone;
}
void send_high_bit() {
int i = 0;
printf("1");
mraa_pwm_write(pwm1,DUTY);
mraa_pwm_write(pwm2,DUTY);
mraa_pwm_write(pwm3,DUTY);
mraa_pwm_write(pwm4,DUTY);
for(i = LONG_DELAY; i > 0; i--); //20 ms
mraa_pwm_write(pwm1,0);
mraa_pwm_write(pwm2,0);
mraa_pwm_write(pwm3,0);
mraa_pwm_write(pwm4,0);
for(i = SHORT_DELAY; i > 0; i--); // 5 ms
}
upm_result_t speaker_set_frequency(const speaker_context dev,
unsigned int freq)
{
assert(dev != NULL);
if (!dev->is_pwm)
return UPM_ERROR_NO_RESOURCES;
if (freq < 50 || freq > 32000)
{
printf("%s: freq must be between 50 and 32000.\n", __FUNCTION__);
return UPM_ERROR_OPERATION_FAILED;
}
float period = 1.0 / (float)freq;
// printf("PERIOD: %f (freq %d)\n", period, freq);
if (period >= 0.001) // ms range
{
if (mraa_pwm_period(dev->pwm, period))
{
printf("%s: mraa_pwm_period() failed.\n", __FUNCTION__);
return UPM_ERROR_OPERATION_FAILED;
}
}
else // us range. With a max of 32KHz, no less than 3.125 us.
{
if (mraa_pwm_period_us(dev->pwm, (int)(period * 1000000)))
{
printf("%s: mraa_pwm_period_us() failed.\n", __FUNCTION__);
return UPM_ERROR_OPERATION_FAILED;
}
}
// save it for later if needed
dev->default_freq = freq;
// A 10% duty cycle enables better results at high frequencies
mraa_pwm_write(dev->pwm, 0.1);
return UPM_SUCCESS;
}
void send_preamble_sequence(int preamble_length) {
int i = 0, j = 0;
for(i = preamble_length; i > 0; i--){
//equal durations
mraa_pwm_write(pwm1,DUTY);
mraa_pwm_write(pwm2,DUTY);
mraa_pwm_write(pwm3,DUTY);
mraa_pwm_write(pwm4,DUTY);
for(j = PREAMBLE_DELAY; j > 0; j--);
mraa_pwm_write(pwm1,0);
mraa_pwm_write(pwm2,0);
mraa_pwm_write(pwm3,0);
mraa_pwm_write(pwm4,0);
for(j = PREAMBLE_DELAY; j > 0; j--);
}
}
FskErr mraaPWMNew(FskPinPWM *pin, SInt32 number, const char *name)
{
FskErr err;
mraaPWM mpwm;
err = FskMemPtrNewClear(sizeof(mraaPWMRecord), &mpwm);
if (err) return err;
mpwm->context = mraa_pwm_init(number);
if (!mpwm->context) {
FskMemPtrDispose(mpwm);
return kFskErrOperationFailed;
}
mraa_pwm_period_ms(mpwm->context, PWMDEFAULTPERIOD);
mpwm->period = PWMDEFAULTPERIOD;
mraa_pwm_write(mpwm->context, 0.0);
*pin = (FskPinPWM)mpwm;
return err;
}
int main()
{
int sockfd;
float brightness;
struct sockaddr_in server_addr;
char response[MAX_SIZE];
char cmd[MAX_SIZE];
char cmd2[MAX_SIZE];
FILE *fp, *fp2;
char component_string[MAX_SIZE];
char value_string[MAX_SIZE];
int value_int;
mraa_pwm_context speed_pwm_in1, speed_pwm_in2, turn_pwm;
speed_pwm_in1 = mraa_pwm_init(3);
speed_pwm_in2 = mraa_pwm_init(5);
turn_pwm = mraa_pwm_init(6);
if (speed_pwm_in1 == NULL || speed_pwm_in2 == NULL || turn_pwm == NULL) {
fprintf(stderr, "Failed to initialized.\n");
return 1;
}
mraa_pwm_period_us(speed_pwm_in1,870); //1150Hz
mraa_pwm_enable(speed_pwm_in1, 1);
mraa_pwm_period_us(speed_pwm_in2,870);
mraa_pwm_enable(speed_pwm_in2, 1);
mraa_pwm_period_ms(turn_pwm,20);
mraa_pwm_enable(turn_pwm, 1);
mraa_pwm_write(speed_pwm_in1, 1.0f);
mraa_pwm_write(speed_pwm_in2, 1.0f);
mraa_pwm_write(turn_pwm, CENTER);
//Set the protocol to mqtt and
//restart iotkit-agent to ensure that it is running.
system("iotkit-admin protocol mqtt");
system("systemctl restart iotkit-agent");
//create a socket with the following attributes:
socklen_t len = sizeof(server_addr);
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
bzero(&server_addr,sizeof(server_addr));
//Name of the socket as agreed with the server
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = inet_addr(localhost);
server_addr.sin_port = htons(41235);
if (bind(sockfd, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
fprintf(stderr, "Failed to bind");
return 1;
}
while(1)
{
//Use recvfrom function to send JSON message to iotkit-agent
if(recvfrom(sockfd, response, MAX_SIZE, 0, (struct sockaddr *)&server_addr, &len) < 0)
{
fprintf(stderr, "Failed to receive actuation\n");
return 1;
}
//printf("Received JSON message: %s\n", response);
//---This part extracts the component name----------------
snprintf(cmd, sizeof(cmd), "echo '%s' | sed 's/\"/ /g' | tr ' ' '\n' | awk '/component/{getline; getline; print}'", response);
fp = popen(cmd, "r");
if (fp == NULL) {
fprintf(stderr, "Failed to run command\n" );
exit(1);
}
while (fgets(component_string, sizeof(component_string)-1, fp) != NULL) {
}
pclose(fp);
//---This part extracts the value-------------------------
snprintf(cmd2, sizeof(cmd2), "echo '%s' | sed 's/\"/ /g' | tr ' ' '\n' | awk '/value/{getline; getline; print}'", response);
fp2 = popen(cmd2, "r");
if (fp2 == NULL) {
fprintf(stderr, "Failed to run command\n" );
exit(1);
}
while (fgets(value_string, sizeof(value_string)-1, fp) != NULL) {
}
pclose(fp2);
//printf(value_string);
//---This part is for actuation
if (!strcmp(component_string, "vehicleControl\n")) {
if (!strcmp(value_string, "forward\n")) {
printf("Going forward for 1 second.\n\n");
mraa_pwm_write(turn_pwm, CENTER); //straight
usleep(100000);
speed_control(speed_pwm_in1, speed_pwm_in2, 100);
sleep(1);
speed_control(speed_pwm_in1, speed_pwm_in2, 0);
}
else if (!strcmp(value_string, "reverse\n")) {
printf("Going backward for 1 second.\n\n");
mraa_pwm_write(turn_pwm, CENTER); //reverse
usleep(100000);
speed_control(speed_pwm_in1, speed_pwm_in2, -100);
sleep(1);
speed_control(speed_pwm_in1, speed_pwm_in2, 0);
}
else if (!strcmp(value_string, "left\n")) {
printf("Making a left turn.\n\n");
mraa_pwm_write(turn_pwm, CENTER - 0.015f); //left
usleep(100000);
speed_control(speed_pwm_in1, speed_pwm_in2, 100);
sleep(1);
speed_control(speed_pwm_in1, speed_pwm_in2, 0);
}
else if (!strcmp(value_string, "right\n")) {
printf("Making a right turn.\n\n");
mraa_pwm_write(turn_pwm, CENTER + 0.015f); //right
usleep(100000);
speed_control(speed_pwm_in1, speed_pwm_in2, 100);
sleep(1);
speed_control(speed_pwm_in1, speed_pwm_in2, 0);
}
else
fprintf(stderr, "Wrong actuation command received!\n");
}
}
close(sockfd);
return 0;
}
/**
* Set the output duty-cycle percentage, as a float
*
* @param percentage A floating-point value representing percentage of
* output. The value should lie between 0.0f (representing on 0%) and
* 1.0f Values above or below this range will be set at either 0.0f or
* 1.0f
* @return Result of operation
*/
mraa_result_t
write(float percentage)
{
return mraa_pwm_write(m_pwm, percentage);
}
int main() {
float speed, turn;
char speed_user_input[MAXBUFSIZ];
char turn_user_input[MAXBUFSIZ];
char time_user_input[MAXBUFSIZ];
mraa_pwm_context speed_pwm_in1, speed_pwm_in2, turn_pwm;
speed_pwm_in1 = mraa_pwm_init(3);
speed_pwm_in2 = mraa_pwm_init(5);
turn_pwm = mraa_pwm_init(6);
if (speed_pwm_in1 == NULL || speed_pwm_in2 == NULL || turn_pwm == NULL) {
fprintf(stderr, "Failed to initialized.\n");
return 1;
}
mraa_pwm_period_us(speed_pwm_in1,870); //1150Hz
mraa_pwm_enable(speed_pwm_in1, 1);
mraa_pwm_period_us(speed_pwm_in2,870);
mraa_pwm_enable(speed_pwm_in2, 1);
mraa_pwm_period_ms(turn_pwm,20);
mraa_pwm_enable(turn_pwm, 1);
mraa_pwm_write(turn_pwm, CENTER);
mraa_pwm_write(speed_pwm_in1, 1.0f);
mraa_pwm_write(speed_pwm_in2, 1.0f);
RearWheel *rw = new RearWheel();
//go for the curve
thread t1;
while(1) {
t1 = rw->threading();
printf("Turn (L, C, R): ");
scanf("%s", turn_user_input);
if (!strcmp(turn_user_input, "L") || !strcmp(turn_user_input, "l"))
turn = CENTER - 0.015f;
else if (!strcmp(turn_user_input, "C") || !strcmp(turn_user_input, "c"))
turn = CENTER;
else if (!strcmp(turn_user_input, "R") || !strcmp(turn_user_input, "r"))
turn = CENTER + 0.018f;
else {
printf("Wrong turn type!\n");
return 1;
}
printf("Speed value (-100-100): ");
scanf("%s", speed_user_input);
speed = atof(speed_user_input);
printf("time: ");
scanf("%s", time_user_input);
int time = atoi(time_user_input);
if (speed > 100 || speed < -100)
printf("Error: Choose between -100 and 100\n");
else {
mraa_pwm_write(turn_pwm, turn);
usleep(100000);
speed_control(speed_pwm_in1, speed_pwm_in2, speed);
}
sleep(time);
speed_control(speed_pwm_in1, speed_pwm_in2, 0.0f);
float count = rw->getCount();
printf("%.2f \n", count);
rw->clear();
t1.join();
}
return 0;
}
int main(int argc, char *argv[]) {
printf("\n---------------------ir_transmit.c---------------------\n");
//const struct sched_param priority={1};
//sched_setscheduler(0,SCHED_FIFO,&priority);
int transmit_counter = 0;
int i = 0;
int temp = -1;
// GPIO Initialization - Edison has 4 PWM pins
pwm1 = mraa_pwm_init(3);
mraa_pwm_period_us(pwm1, 26);
mraa_pwm_enable(pwm1, 1);
pwm2 = mraa_pwm_init(5);
mraa_pwm_period_us(pwm2, 26);
mraa_pwm_enable(pwm2, 1);
pwm3 = mraa_pwm_init(6);
mraa_pwm_period_us(pwm3, 26);
mraa_pwm_enable(pwm3, 1);
pwm4 = mraa_pwm_init(9);
mraa_pwm_period_us(pwm4, 26);
mraa_pwm_enable(pwm4, 1);
printf("\n---------------------Part 0: Apply Settings from Config Files---------------------\n");
temp = check_preamble_length();
if (temp != -1) {
printf("\nGot Preamble Length from /etc/IR/preamble_length.txt\n");
printf("ID I got was %d\n", temp);
printf("But we are still going to use 5\n", temp);
//preamble_length = temp;
}
temp = -1;
// check file for edisonID
temp = check_edison_id();
if (temp != -1) {
printf("Got Edison ID from /etc/IR/edisonID.txt\n");
printf("ID I got was %d\n", temp);
edisonID = temp;
}
temp = -1;
printf("\n---------------------Part 0: Apply Settings from Passed in Arguments---------------------\n");
// if we pass in an argument, use it for the preamble_length, takes
// priority over what's in the file. please pass in an integer
if (argc == 2) {
preamble_length = atoi(argv[1]);
printf("Argument(1) Passed In! Preamble Length set to: %d\n", preamble_length);
}
else {
printf("No Argument(1), preamble Length set to default value: %d\n", preamble_length);
}
// if we pass in an argument, use it for the edisonID, takes
// priority over what's in the file. please pass in an integer
if (argc == 3) {
preamble_length = atoi(argv[1]);
printf("Argument(1) Passed In! Preamble Length set to: %d\n", preamble_length);
edisonID = atoi(argv[2]);
printf("Argument(2) Passed In! edisonID set to: %d\n", edisonID);
}
else {
printf("No Argument(2), edisonID set to default value: %d\n", edisonID);
}
// This will transmit IR data on all 4 pins at once
// on a single Edison board
// Continuously Transmit IR Signal when the program is running
while(1) {
printf("\n---------------------Transmission---------------------\n");
// Updates the preamble_length variable based on info from server
temp = check_preamble_length();
if (temp != -1) {
printf("ID from /etc/IR_conf/preamble_length.txt was %d\n", temp);
preamble_length = temp;
}
// Preamble - Signals the Receiver Message Incoming
printf("Sending preamble_length = %d, ", preamble_length);
send_preamble_sequence(preamble_length);
// Sending Edison Board ID # - 2 bits, MSB then LSB
printf("EdisonID: %d - ", edisonID);
switch (edisonID) {
case 0:
send_low_bit(); // Send lsb bit 0 = LOW
send_low_bit(); // Send msb bit 1 = LOW
break;
case 1:
send_low_bit(); // Send msb bit 1 = LOW
send_high_bit(); // Send lsb bit 0 = HIGH
break;
case 2:
send_high_bit(); // Send msb bit 1 = HIGH
send_low_bit(); // Send lsb bit 0 = LOW
break;
case 3:
send_high_bit(); // Send lsb bit 0 = HIGH
send_high_bit(); // Send msb bit 1 = HIGH
break;
default:
send_low_bit(); // Send lsb bit 0 = LOW
send_low_bit(); // Send msb bit 1 = LOW
}
// Sending Edison IR Emitter ID # - 2 bits, MSB then LSB
// pwm1,DUTY = 00 = short-long/short-long = 5-20/5-20
// pwm2,DUTY = 01 = short-long/long-short = 5-20/20-5
// pwm3,DUTY = 10 = long-short/short-long = 20-5/5-20
// pwm4,DUTY = 11 = long-short/long-short = 20-5/20-5
printf(", EmitterIDs 0-3\n");
// First Bit
mraa_pwm_write(pwm1,DUTY);
mraa_pwm_write(pwm2,DUTY);
mraa_pwm_write(pwm3,DUTY);
mraa_pwm_write(pwm4,DUTY);
for(i = SHORT_DELAY; i > 0; i--); // 5 ms
mraa_pwm_write(pwm1,0);
mraa_pwm_write(pwm2,0);
//mraa_pwm_write(pwm3,DUTY, DUTY);
//mraa_pwm_write(pwm4,DUTY, DUTY);
for(i = MID_DELAY; i > 0; i--); // 15 ms
//mraa_pwm_write(pwm1, 0);
//mraa_pwm_write(pwm2, 0);
mraa_pwm_write(pwm3,0);
mraa_pwm_write(pwm4,0);
for(i = SHORT_DELAY; i > 0; i--); // 5 ms
// Second Bit
mraa_pwm_write(pwm1,DUTY);
mraa_pwm_write(pwm2,DUTY);
mraa_pwm_write(pwm3,DUTY);
mraa_pwm_write(pwm4,DUTY);
for(i = SHORT_DELAY; i > 0; i--); // 20 ms
mraa_pwm_write(pwm1,0);
//mraa_pwm_write(pwm2,DUTY, DUTY);
mraa_pwm_write(pwm3,0);
//mraa_pwm_write(pwm4,DUTY, DUTY);
for(i = MID_DELAY; i > 0; i--); // 15 ms
//mraa_pwm_write(pwm1, 0);
mraa_pwm_write(pwm2,0);
//mraa_pwm_write(pwm3, 0);
mraa_pwm_write(pwm4,0);
for(i = SHORT_DELAY; i > 0; i--); // 5 ms
/*
send_message_bit(edisonID, 0, DUTY, pwm1,DUTY);
send_message_bit(edisonID, 0, DUTY, pwm1,DUTY);
send_message_bit(edisonID, 0, DUTY, pwm1,DUTY);
send_message_bit(edisonID, 0, DUTY, pwm1,DUTY);
for (transmit_counter = TRANSMIT_DURATION; transmit_counter >= 0; transmit_counter--) {
send_message_bit(edisonID, 0, DUTY, pwm1,DUTY);
}
for (transmit_counter = TRANSMIT_DURATION; transmit_counter >= 0; transmit_counter--) {
send_message_bit(edisonID, 1, DUTY, pwm2,DUTY);
}
for (transmit_counter = TRANSMIT_DURATION; transmit_counter >= 0; transmit_counter--) {
send_message_bit(edisonID, 2, DUTY, pwm3,DUTY);
}
for (transmit_counter = TRANSMIT_DURATION; transmit_counter >= 0 ;transmit_counter--) {
send_message_bit(edisonID, 3, DUTY, pwm4,DUTY);
}
*/
}// end while loop
mraa_pwm_write (pwm1, 0);
mraa_pwm_enable(pwm1, 0);
mraa_pwm_write (pwm2, 0);
mraa_pwm_enable(pwm2, 0);
mraa_pwm_write (pwm3, 0);
mraa_pwm_enable(pwm3, 0);
mraa_pwm_write (pwm4, 0);
mraa_pwm_enable(pwm4, 0);
return 0;
}//end main
void BuzzerAlarm::stop() {
mraa_pwm_period_us(myAlarm, 1);
mraa_pwm_write(myAlarm, 0);
}
void set_speed(float speed)
{
mraa_pwm_write(pwm1, speed);
mraa_pwm_write(pwm2, speed);
}
int main(){
/**********************************************************************/
/**********************************************************************/
/* Begin. */
mraa_uart_context uart;
uart = mraa_uart_init(0);
mraa_uart_set_baudrate(uart, 115200);
char buffer[] = "hhh";
char flush[]="xxxxxxxxxxxx";
char str[] = "HELLO";
if (uart == NULL) {
fprintf(stderr, "UART failed to setup\n");
printf("UART failed");
return 1;
}
printf("firstavail:%d\n",mraa_uart_data_available(uart,0));
while (mraa_uart_data_available(uart,0))
{
mraa_uart_read(uart, flush, sizeof(uart));
printf("Flush: %c %c %c %c %c %c %c %c",flush[0], flush[1], flush[2],flush[3],flush[4],flush[5],flush[6],flush[7]);
usleep(150);
}
printf("available: %d",mraa_uart_data_available(uart,0));
char speed_user_input[MAXBUFSIZ];
char turn_user_input[MAXBUFSIZ];
mraa_pwm_context speed_pwm_in1, speed_pwm_in2, turn_pwm;
speed_pwm_in1 = mraa_pwm_init(3);
speed_pwm_in2 = mraa_pwm_init(5);
turn_pwm = mraa_pwm_init(6);
if (speed_pwm_in1 == NULL || speed_pwm_in2 == NULL || turn_pwm == NULL) {
fprintf(stderr, "Failed to initialized.\n");
return 1;
}
mraa_pwm_period_us(speed_pwm_in1,870); //1150Hz
mraa_pwm_enable(speed_pwm_in1, 1);
mraa_pwm_period_us(speed_pwm_in2,870);
mraa_pwm_enable(speed_pwm_in2, 1);
mraa_pwm_period_ms(turn_pwm,20);
mraa_pwm_enable(turn_pwm, 1);
mraa_pwm_write(turn_pwm, CENTER);
mraa_pwm_write(speed_pwm_in1, 1.0f);
mraa_pwm_write(speed_pwm_in2, 1.0f);
int n = 5;
int spd = 0;
char direction = 'C';
char cross_clr = 'B';
float angle = 0.0f;
while (1)
{
//sleep(2);
//readCharAry(uart,flush);
spd = 50;
mraa_uart_read(uart, buffer, 1);
if(buffer[0]=='\n')
{
printf("new line ");
mraa_uart_read(uart, buffer, 1);
if(buffer[0]=='\n')
{
printf("new line ");
mraa_uart_read(uart, buffer, 1);
}
}
mraa_uart_read(uart, buffer+1, 1);
if(buffer[1]=='\n')
{
buffer[0] = 'h';
buffer[1] = 'h';
}
int sign = 0;
if(cross_clr == 'M')
{
speed_control(speed_pwm_in1, speed_pwm_in2, 0.0f);
sleep(1);
char* nearestBeaconID = (char*)malloc(5);
getStrongestBeacon(nearestBeaconID);
printf("the nearestBeaconID is: %s\n", nearestBeaconID);
sign = 1;
angle = CENTER + 0.015f;
mraa_pwm_write(turn_pwm, angle);
usleep(15000);
speed_control(speed_pwm_in1, speed_pwm_in2, 54);
printf("speed: %d",spd);
usleep(5500000);
speed_control(speed_pwm_in1, speed_pwm_in2, 0.0f);
//sleep(1);
mraa_uart_write(uart, str, 1);
//while(!mraa_uart_data_available(uart, 10)){};
mraa_uart_read(uart, buffer, 1);
while(buffer[0] == '\n')
{
mraa_uart_read(uart, buffer, 1);
}
if(buffer[0] == '\0') direction = 'C';
mraa_uart_read(uart, buffer + 1, 1);
cross_clr = buffer[1];
}
printf("buff:%c %c %c \n",buffer[0], buffer[1],buffer[2]);
if(!sign){
if (direction == 'L') angle = CENTER - 0.005f;
if (direction == 'R') angle = CENTER + 0.005f;
if (direction == 'C') angle = CENTER;}
else
{
if (direction == 'C') angle = CENTER +0.013f;
if (direction == 'L') angle = CENTER +0.005f;
if (direction == 'R') angle = CENTER + 0.019f;
}
mraa_pwm_write(turn_pwm, angle);
speed_control(speed_pwm_in1, speed_pwm_in2, spd);
printf("speed: %d",spd);
usleep(250000);
direction = buffer[0];
cross_clr = buffer[1];
}
return 0;
}