Quirin Fitzi
Workshop 2
Diff: main.cpp
- Revision:
- 33:92fa859527a3
- Parent:
- 32:af40c5d4b5dc
--- a/main.cpp Wed Mar 23 09:52:49 2022 +0000
+++ b/main.cpp Fri May 06 17:12:15 2022 +0200
@@ -1,197 +1,74 @@
-//workshop 2
#include "mbed.h"
-#include "PM2_Libary.h"
-
-// logical variable main task
-bool do_execute_main_task = false; // this variable will be toggled via the user button (blue button) to or not to execute the main task
-
-// user button on nucleo board
-Timer user_button_timer; // create Timer object which we use to check if user button was pressed for a certain time (robust against signal bouncing)
-InterruptIn user_button(PC_13); // create InterruptIn interface object to evaluate user button falling and rising edge (no blocking code in ISR)
-void user_button_pressed_fcn(); // custom functions which gets executed when user button gets pressed and released, definition below
-void user_button_released_fcn();
-
-// while loop gets executed every main_task_period_ms milliseconds
-int main_task_period_ms = 50; // define main task period time in ms e.g. 50 ms -> main task runns 20 times per second
-Timer main_task_timer; // create Timer object which we use to run the main task every main task period time in ms
-
-// led on nucleo board
-DigitalOut user_led(LED1); // create DigitalOut object to command user led
-
-// additional Led
-DigitalOut extra_led(PB_9); // create DigitalOut object to command extra led (do add an aditional resistor, e.g. 220...500 Ohm)
-
-// mechanical button
-DigitalIn mechanical_button(PC_5); // create DigitalIn object to evaluate extra mechanical button, you need to specify the mode for proper usage, see below
-
-// Sharp GP2Y0A41SK0F, 4-40 cm IR Sensor
-float ir_distance_mV = 0.0f; // define variable to store measurement
-AnalogIn ir_analog_in(PC_2); // create AnalogIn object to read in infrared distance sensor, 0...3.3V are mapped to 0...1
-
-// 78:1, 100:1, ... Metal Gearmotor 20Dx44L mm 12V CB
-DigitalOut enable_motors(PB_15); // create DigitalOut object to enable dc motors
-
-float pwm_period_s = 0.00005f; // define pwm period time in seconds and create FastPWM objects to command dc motors
-FastPWM pwm_M1(PB_13); // motor M1 is used open loop
-FastPWM pwm_M2(PA_9); // motor M2 is closed-loop speed controlled (angle velocity)
-FastPWM pwm_M3(PA_10); // motor M3 is closed-loop position controlled (angle controlled)
-
-EncoderCounter encoder_M1(PA_6, PC_7); // create encoder objects to read in the encoder counter values
-EncoderCounter encoder_M2(PB_6, PB_7);
-EncoderCounter encoder_M3(PA_0, PA_1);
-
-// create SpeedController and PositionController objects, default parametrization is for 78.125:1 gear box
-float max_voltage = 12.0f; // define maximum voltage of battery packs, adjust this to 6.0f V if you only use one batterypack
-float counts_per_turn = 20.0f * 78.125f; // define counts per turn at gearbox end: counts/turn * gearratio
-float kn = 180.0f / 12.0f; // define motor constant in rpm per V
-float k_gear = 100.0f / 78.125f; // define additional ratio in case you are using a dc motor with a different gear box, e.g. 100:1
-float kp = 0.1f; // define custom kp, this is the default speed controller gain for gear box 78.125:1
-
-// SpeedController speedController_M2(counts_per_turn, kn, max_voltage, pwm_M2, encoder_M2); // default 78.125:1 gear box with default contoller parameters
-SpeedController speedController_M2(counts_per_turn * k_gear, kn / k_gear, max_voltage, pwm_M2, encoder_M2); // parameters adjusted to 100:1 gear
-
-float max_speed_rps = 0.5f; // define maximum speed that the position controller is changig the speed, has to be smaller or equal to kn * max_voltage
-// PositionController positionController_M3(counts_per_turn, kn, max_voltage, pwm_M3, encoder_M3); // default 78.125:1 gear with default contoller parameters
-PositionController positionController_M3(counts_per_turn * k_gear, kn / k_gear, kp * k_gear, max_voltage, pwm_M3, encoder_M3); // parameters adjusted to 100:1 gear, we need a different speed controller gain here
-
-// Futaba Servo S3001 20mm 3kg Analog
-Servo servo_S1(PB_2); // create servo objects
-Servo servo_S2(PC_8);
-float servo_S1_angle = 0; // servo S1 normalized angle
-float servo_S2_angle = 0; // servo S2 normalized angle
-int servo_period_mus = 20000; // define servo period time in mus
-
-int servo_counter = 0; // define servo counter, this is an additional variable to make the servos move
-int loops_per_seconds = static_cast<int>(ceilf(1.0f/(0.001f*(float)main_task_period_ms))); // define loops per second
-
-// Groove Ultrasonic Ranger V2.0
-float us_distance_cm = 0.0f; // define variable to store measurement
-RangeFinder us_range_finder(PB_12, 5782.0f, 0.02f, 17500); // create range finder object (ultra sonic distance sensor), 20 Hz parametrization
-// RangeFinder us_range_finder(PB_12, 5782.0f, 0.02f, 7000); // create range finder object (ultra sonic distance sensor), 50 Hz parametrization
-
-// LSM9DS1 IMU, carefull: not all PES boards have an imu (chip shortage)
-// LSM9DS1 imu(PC_9, PA_8); // create LSM9DS1 comunication object, if you want to be able to use the imu you need to #include "LSM9DS1_i2c.h"
-
-int main()
-{
- // attach button fall and rise functions to user button object
- user_button.fall(&user_button_pressed_fcn);
- user_button.rise(&user_button_released_fcn);
-
- // start timer
- main_task_timer.start();
-
- // set pullup mode: add resistor between pin and 3.3 V, so that there is a defined potential
- mechanical_button.mode(PullUp);
-
- // enable hardwaredriver dc motors: 0 -> disabled, 1 -> enabled
- enable_motors = 1;
-
- // motor M1 is used open-loop, we need to initialize the pwm and set pwm output to zero at the beginning, range: 0...1 -> u_min...u_max: 0.5 -> 0 V
- pwm_M1.period(pwm_period_s);
- pwm_M1.write(0.5f);
-
- // enable servos, you can also disable them at any point in your program if you don't want your servos to become warm
- servo_S1.Enable(servo_S1_angle, servo_period_mus);
- servo_S2.Enable(servo_S2_angle, servo_period_mus);
+//Program to 'sweep' test a 'standard RC type servo
+//Define some parameters using compiler directive '#define'
+//Check Servo DATA if 0.75ms to 2.25ms then use min=750 and max=2250
+//NB be values in microseconds (Following are generic values)
+#define MID 1500
+#define MIN 1000
+#define MAX 2350
+#define STEP 50
+//Time delay between steps in milliseconds
+#define TIME 100000
+
+PwmOut myServo(PB_2);
+
+DigitalIn user_button(PC_13);
+int counter_stoppen;
+int counter_user_button;
+float pos_servo;
+int main() {
+
+ while(1){
+ if ((user_button.read() == 0) & (counter_stoppen == 0)) {
+ counter_user_button++;
+ counter_stoppen = 1;
+ }
+ if (user_button.read()){
+ counter_stoppen = 0;
+ }
+ /*if (counter_user_button >= 5){
+ counter_user_button = 1;
+ }*/
+ if (counter_user_button >= 5){
+ counter_user_button = 1;
+ }
- while (true) { // this loop will run forever
-
- main_task_timer.reset();
-
- if (do_execute_main_task) {
-
- // read analog input
- ir_distance_mV = 1.0e3f * ir_analog_in.read() * 3.3f;
-
- // command dc motors if mechanical button is pressed
- if (mechanical_button.read()) {
- pwm_M1.write(0.75f); // write output voltage to motor M1
- speedController_M2.setDesiredSpeedRPS(0.5f); // set a desired speed for speed controlled dc motors M2
- positionController_M3.setDesiredRotation(1.5f, max_speed_rps); // set a desired rotation for position controlled dc motors M3
- } else {
- pwm_M1.write(0.5f);
- speedController_M2.setDesiredSpeedRPS(0.0f);
- positionController_M3.setDesiredRotation(0.0f, max_speed_rps);
- }
-
- // check if servos are enabled
- if (!servo_S1.isEnabled()) servo_S1.Enable(servo_S1_angle, servo_period_mus);
- if (!servo_S2.isEnabled()) servo_S2.Enable(servo_S2_angle, servo_period_mus);
- // command servo position, this needs to be calibrated
- servo_S1.SetPosition(servo_S1_angle);
- if (servo_S1_angle <= 1.0f & servo_counter%loops_per_seconds == 0 & servo_counter != 0) {
- servo_S1_angle += 0.01f;
- }
- servo_S2.SetPosition(servo_S2_angle);
- if (servo_S2_angle <= 1.0f & servo_counter%loops_per_seconds == 0 & servo_counter != 0) {
- servo_S2_angle += 0.01f;
- }
- servo_counter++;
-
- // read ultra sonic distance sensor
- us_distance_cm = us_range_finder.read_cm();
-
- // visual feedback that the main task is executed
- extra_led = 1;
-
- } else {
-
- ir_distance_mV = 0.0f;
-
- pwm_M1.write(0.5f);
- speedController_M2.setDesiredSpeedRPS(0.0f);
- positionController_M3.setDesiredRotation(0.0f, max_speed_rps);
+ myServo.period_ms(20);
+ myServo.pulsewidth_us(MID); //NB in microseconds
- servo_S1_angle = 0;
- servo_S2_angle = 0;
- // servo_S1.SetPosition(servo_S1_angle);
- // servo_S2.SetPosition(servo_S2_angle);
- if (servo_S1.isEnabled()) servo_S1.Disable();
- if (servo_S2.isEnabled()) servo_S2.Disable();
-
- us_distance_cm = 0.0f;
-
- extra_led = 0;
- }
-
- user_led = !user_led;
-
- // do only output via serial what's really necessary (this makes your code slow)
- printf("IR sensor (mV): %3.3f, Encoder M1: %3d, Speed M2 (rps) %3.3f, Position M3 (rot): %3.3f, Servo S1 angle (normalized): %3.3f, Servo S2 angle (normalized): %3.3f, US sensor (cm): %3.3f\r\n",
- ir_distance_mV,
- encoder_M1.read(),
- speedController_M2.getSpeedRPS(),
- positionController_M3.getRotation(),
- servo_S1_angle,
- servo_S2_angle,
- us_distance_cm);
+ switch (counter_user_button){
+ case 1:
+ myServo.pulsewidth_us(2350);
+ pos_servo = 0.0;
+ break;
+ case 2:
+ myServo.pulsewidth_us(500);
+ pos_servo = 500.0;
+ break;
+ case 3:
+ myServo.pulsewidth_us(1000);
+ pos_servo = 1000.0;
+ break;
+ case 4:
+ myServo.pulsewidth_us(1500);
+ pos_servo = 1500.0;
+ break;
+ }
- // read out the imu, the actual frames of the sensor reading needs to be figured out
- // imu.updateGyro();
- // imu.updateAcc();
- // imu.updateMag();
- // printf("%.6f, %.6f, %.6f, %.6f, %.6f, %.6f, %.6f, %.6f, %.6f\r\n", imu.readGyroX(), imu.readGyroY(), imu.readGyroZ(),
- // imu.readAccX(), imu.readAccY(), imu.readAccZ(), imu.readMagX(), imu.readMagY(), imu.readMagZ());
-
- // read timer and make the main thread sleep for the remaining time span (non blocking)
- int main_task_elapsed_time_ms = std::chrono::duration_cast<std::chrono::milliseconds>(main_task_timer.elapsed_time()).count();
- thread_sleep_for(main_task_period_ms - main_task_elapsed_time_ms);
- }
-}
-
-void user_button_pressed_fcn()
-{
- user_button_timer.start();
- user_button_timer.reset();
-}
-
-void user_button_released_fcn()
-{
- // read timer and toggle do_execute_main_task if the button was pressed longer than the below specified time
- int user_button_elapsed_time_ms = std::chrono::duration_cast<std::chrono::milliseconds>(user_button_timer.elapsed_time()).count();
- user_button_timer.stop();
- if (user_button_elapsed_time_ms > 200) {
- do_execute_main_task = !do_execute_main_task;
+ printf("counter %d, pos %f\n",counter_user_button, pos_servo);
+ /*myServo.period_ms(20);
+ myServo.pulsewidth_us(MID); //NB in microseconds
+
+ while(true) {
+ for (int i=MIN;i<=MAX;i+=STEP){
+ myServo.pulsewidth_us(i);
+ wait_us(TIME);
+ }
+ for (int i=MAX;i>=MIN;i-=STEP){
+ myServo.pulsewidth_us(i);
+ wait_us(TIME);
+ }
+
+ }*/
}
}
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