Michael Ernst Peter / Mbed OS Test_GPS

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Dependencies:   Eigen

main.cpp@43:f459f6efaf5c, 2022-05-31 (annotated)

Committer:
pmic
Date:
Tue May 31 17:51:34 2022 +0200
Revision:
43:f459f6efaf5c
Parent:
41:1627f3e4640d
Child:
45:5d65b27c9293
Introduced QMC5883L driver

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pmic 36:8c75783c1eca 1 #include <mbed.h>
pmic 36:8c75783c1eca 2
pmic 41:1627f3e4640d 3 // GNSS and Compass test programm for Mateksys GNSS&Compass M9N-5883
pmic 40:1581715116a8 4
pmic 43:f459f6efaf5c 5 // #include "PM2_Libary.h"
pmic 43:f459f6efaf5c 6 // #include "Eigen/Dense.h"
pmic 43:f459f6efaf5c 7 #include "QMC5883L.h"
pmic 43:f459f6efaf5c 8 #include "LinearCharacteristics.h"
pmic 6:e1fa1a2d7483 9
pmic 24:86f1a63e35a0 10 // logical variable main task
pmic 24:86f1a63e35a0 11 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
pmic 17:c19b471f05cb 12
pmic 24:86f1a63e35a0 13 // user button on nucleo board
pmic 24:86f1a63e35a0 14 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)
pmic 24:86f1a63e35a0 15 InterruptIn user_button(PC_13); // create InterruptIn interface object to evaluate user button falling and rising edge (no blocking code in ISR)
pmic 24:86f1a63e35a0 16 void user_button_pressed_fcn(); // custom functions which gets executed when user button gets pressed and released, definition below
pmic 24:86f1a63e35a0 17 void user_button_released_fcn();
pmic 6:e1fa1a2d7483 18
pmic 1:93d997d6b232 19 int main()
pmic 23:26b3a25fc637 20 {
pmic 36:8c75783c1eca 21 // while loop gets executed every main_task_period_ms milliseconds
pmic 43:f459f6efaf5c 22 const int main_task_period_ms = 10; // define main task period time in ms e.g. 50 ms -> main task runns 20 times per second
pmic 36:8c75783c1eca 23 Timer main_task_timer; // create Timer object which we use to run the main task every main task period time in ms
pmic 36:8c75783c1eca 24
pmic 36:8c75783c1eca 25 // led on nucleo board
pmic 36:8c75783c1eca 26 DigitalOut user_led(LED1); // create DigitalOut object to command user led
pmic 36:8c75783c1eca 27
pmic 43:f459f6efaf5c 28 // create QMC5883L compass object
pmic 43:f459f6efaf5c 29 I2C i2c(PB_9, PB_8);
pmic 43:f459f6efaf5c 30 QMC5883L mag(i2c);
pmic 43:f459f6efaf5c 31 LinearCharacteristics raw_mx2mx, raw_my2my, raw_mz2mz;
pmic 43:f459f6efaf5c 32 raw_mx2mx.setup(0.9991f, 0.0088f);
pmic 43:f459f6efaf5c 33 raw_my2my.setup(0.9982f, 0.2092f);
pmic 43:f459f6efaf5c 34 raw_mz2mz.setup(1.0027f, -0.0903f);
pmic 43:f459f6efaf5c 35 float mag_val[3] = {0.0f, 0.0f, 0.0f};
pmic 36:8c75783c1eca 36
pmic 24:86f1a63e35a0 37 // attach button fall and rise functions to user button object
pmic 24:86f1a63e35a0 38 user_button.fall(&user_button_pressed_fcn);
pmic 24:86f1a63e35a0 39 user_button.rise(&user_button_released_fcn);
pmic 17:c19b471f05cb 40
pmic 29:d6f1ccf42a31 41 // start timer
pmic 24:86f1a63e35a0 42 main_task_timer.start();
pmic 6:e1fa1a2d7483 43
pmic 24:86f1a63e35a0 44 while (true) { // this loop will run forever
pmic 6:e1fa1a2d7483 45
pmic 24:86f1a63e35a0 46 main_task_timer.reset();
pmic 6:e1fa1a2d7483 47
pmic 43:f459f6efaf5c 48 mag.readMag();
pmic 43:f459f6efaf5c 49
pmic 24:86f1a63e35a0 50 if (do_execute_main_task) {
pmic 17:c19b471f05cb 51
pmic 43:f459f6efaf5c 52 mag_val[0] = raw_mx2mx.evaluate(mag.magX());
pmic 43:f459f6efaf5c 53 mag_val[1] = raw_my2my.evaluate(mag.magY());
pmic 43:f459f6efaf5c 54 mag_val[2] = raw_mz2mz.evaluate(mag.magZ());
pmic 9:f10b974d01e0 55
pmic 1:93d997d6b232 56 } else {
pmic 6:e1fa1a2d7483 57
pmic 43:f459f6efaf5c 58 for (uint8_t i = 0; i <= 3; i++) {
pmic 43:f459f6efaf5c 59 mag_val[i] = 0;
pmic 43:f459f6efaf5c 60 }
pmic 6:e1fa1a2d7483 61
pmic 1:93d997d6b232 62 }
pmic 6:e1fa1a2d7483 63
pmic 24:86f1a63e35a0 64 user_led = !user_led;
pmic 24:86f1a63e35a0 65
pmic 24:86f1a63e35a0 66 // do only output via serial what's really necessary (this makes your code slow)
pmic 43:f459f6efaf5c 67 printf("%f, %f, %f\r\n", mag_val[0], mag_val[1], mag_val[2]);
pmic 17:c19b471f05cb 68
pmic 24:86f1a63e35a0 69 // read timer and make the main thread sleep for the remaining time span (non blocking)
pmic 24:86f1a63e35a0 70 int main_task_elapsed_time_ms = std::chrono::duration_cast<std::chrono::milliseconds>(main_task_timer.elapsed_time()).count();
pmic 24:86f1a63e35a0 71 thread_sleep_for(main_task_period_ms - main_task_elapsed_time_ms);
pmic 1:93d997d6b232 72 }
pmic 1:93d997d6b232 73 }
pmic 6:e1fa1a2d7483 74
pmic 24:86f1a63e35a0 75 void user_button_pressed_fcn()
pmic 25:ea1d6e27c895 76 {
pmic 26:28693b369945 77 user_button_timer.start();
pmic 6:e1fa1a2d7483 78 user_button_timer.reset();
pmic 6:e1fa1a2d7483 79 }
pmic 6:e1fa1a2d7483 80
pmic 24:86f1a63e35a0 81 void user_button_released_fcn()
pmic 6:e1fa1a2d7483 82 {
pmic 24:86f1a63e35a0 83 // read timer and toggle do_execute_main_task if the button was pressed longer than the below specified time
pmic 24:86f1a63e35a0 84 int user_button_elapsed_time_ms = std::chrono::duration_cast<std::chrono::milliseconds>(user_button_timer.elapsed_time()).count();
pmic 6:e1fa1a2d7483 85 user_button_timer.stop();
pmic 24:86f1a63e35a0 86 if (user_button_elapsed_time_ms > 200) {
pmic 24:86f1a63e35a0 87 do_execute_main_task = !do_execute_main_task;
pmic 8:9bb806a7f585 88 }
pmic 6:e1fa1a2d7483 89 }