altb_pmic / Mbed 2 deprecated Grove-Barometric_Pressure_Sensor_Example

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Dependencies:   HP206C mbed

main.cpp@8:542ae9ef1003, 2019-06-26 (annotated)

Committer:
pmic
Date:
Wed Jun 26 09:51:41 2019 +0000
Revision:
8:542ae9ef1003
Parent:
7:3f4048c1cc81 
commit before holiday

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pmic 0:5119eeafd9ce 1 #include "mbed.h"
pmic 2:ecd5c6118888 2 #include "HP206C.h"
pmic 6:898a83da0661 3 #include "IIR_filter.h"
pmic 0:5119eeafd9ce 4
pmic 6:898a83da0661 5 /* Notes pmic 25.06.2019:
pmic 7:3f4048c1cc81 6 -
pmic 7:3f4048c1cc81 7 */
pmic 7:3f4048c1cc81 8
pmic 7:3f4048c1cc81 9 /*
pmic 7:3f4048c1cc81 10 Serial pc(SERIAL_TX, SERIAL_RX);
pmic 7:3f4048c1cc81 11 HP206C barometer(D14, D15);
pmic 7:3f4048c1cc81 12 float altitude = 0.0f;
pmic 7:3f4048c1cc81 13
pmic 7:3f4048c1cc81 14
pmic 6:898a83da0661 15 */
pmic 6:898a83da0661 16
pmic 6:898a83da0661 17 HP206C barometer(D14, D15); // 20 Hz parametrization
pmic 0:5119eeafd9ce 18 float altitude = 0.0f;
pmic 0:5119eeafd9ce 19
pmic 6:898a83da0661 20 Serial pc(SERIAL_TX, SERIAL_RX); // serial connection via USB - programmer
pmic 6:898a83da0661 21 InterruptIn Button(USER_BUTTON); // User Button
pmic 6:898a83da0661 22 Ticker LoopTimer; // interrupt for control loop
pmic 6:898a83da0661 23 Timer t; // timer to analyse Button
pmic 8:542ae9ef1003 24 Timer twhile; // timer for time measurement (usage in while(1), without timer attached)
pmic 6:898a83da0661 25
pmic 6:898a83da0661 26 int k;
pmic 6:898a83da0661 27 bool doRun = false;
pmic 8:542ae9ef1003 28 float Ts = 0.05f; // sample time of main loop, 20 Hz
pmic 6:898a83da0661 29
pmic 6:898a83da0661 30 IIR_filter pt1(0.2f, Ts, 1.0f);
pmic 6:898a83da0661 31 float altitudef = 0.0f;
pmic 6:898a83da0661 32
pmic 6:898a83da0661 33 // user defined functions
pmic 6:898a83da0661 34 void updateLoop(void); // loop (via interrupt)
pmic 6:898a83da0661 35 void pressed(void); // user Button pressed
pmic 6:898a83da0661 36 void released(void); // user Button released
pmic 6:898a83da0661 37
pmic 6:898a83da0661 38 // main program and control loop
pmic 6:898a83da0661 39 // -----------------------------------------------------------------------------
pmic 0:5119eeafd9ce 40 int main()
pmic 0:5119eeafd9ce 41 {
pmic 8:542ae9ef1003 42 pc.baud(2000000); // for serial comm.
pmic 6:898a83da0661 43 Button.fall(&pressed); // attach key pressed function
pmic 6:898a83da0661 44 Button.rise(&released); // attach key pressed function
pmic 6:898a83da0661 45 k = 0;
pmic 6:898a83da0661 46 pt1.reset(0.0f);
pmic 2:ecd5c6118888 47 barometer.reset();
pmic 8:542ae9ef1003 48 wait(1.0f);
pmic 8:542ae9ef1003 49 // LoopTimer.attach(&updateLoop, Ts); // attach loop to timer interrupt
pmic 7:3f4048c1cc81 50 ///*
pmic 8:542ae9ef1003 51 twhile.start(); // timer for time measurement (usage in while(1), without timer attached)
pmic 7:3f4048c1cc81 52 while(1) {
pmic 7:3f4048c1cc81 53 altitude = barometer();
pmic 7:3f4048c1cc81 54 altitudef = pt1(altitude);
pmic 7:3f4048c1cc81 55 if(doRun) {
pmic 7:3f4048c1cc81 56 // use this section to do dynamical measurements
pmic 8:542ae9ef1003 57 if(doRun && k++ < 2000) {
pmic 8:542ae9ef1003 58 // if(doRun) {
pmic 8:542ae9ef1003 59 // k++;
pmic 8:542ae9ef1003 60 pc.printf("%10i %10.6e %10.6e\r\n", k, twhile.read(), altitude);
pmic 7:3f4048c1cc81 61 }
pmic 7:3f4048c1cc81 62 }
pmic 7:3f4048c1cc81 63 }
pmic 7:3f4048c1cc81 64 //*/
pmic 6:898a83da0661 65 }
pmic 6:898a83da0661 66
pmic 7:3f4048c1cc81 67 // original
pmic 7:3f4048c1cc81 68 /*
pmic 7:3f4048c1cc81 69 pc.baud(115200);
pmic 7:3f4048c1cc81 70 barometer.reset();
pmic 7:3f4048c1cc81 71 while(1) {
pmic 7:3f4048c1cc81 72 altitude = barometer();
pmic 7:3f4048c1cc81 73 pc.printf("altitude %f\r\n", altitude);
pmic 7:3f4048c1cc81 74 wait_ms(20); // don't hammer the serial console
pmic 7:3f4048c1cc81 75 }
pmic 7:3f4048c1cc81 76 */
pmic 7:3f4048c1cc81 77
pmic 6:898a83da0661 78 // the updateLoop starts as soon as you pressed the blue botton
pmic 6:898a83da0661 79 void updateLoop(void)
pmic 6:898a83da0661 80 {
pmic 6:898a83da0661 81 altitude = barometer();
pmic 6:898a83da0661 82 altitudef = pt1(altitude);
pmic 6:898a83da0661 83 if(doRun) {
pmic 7:3f4048c1cc81 84 ///*
pmic 6:898a83da0661 85 // use this section to do dynamical measurements
pmic 8:542ae9ef1003 86 if(doRun && k++ < 2000) {
pmic 8:542ae9ef1003 87 pc.printf("%10i %10.6e\r\n", k, altitude);
pmic 6:898a83da0661 88 }
pmic 7:3f4048c1cc81 89 //*/
pmic 7:3f4048c1cc81 90 /*
pmic 6:898a83da0661 91 // use this section to do static measurements
pmic 6:898a83da0661 92 if(doRun && k++%25 == 0) {
pmic 6:898a83da0661 93 pc.printf("%10i %10.6e\r\n", k, altitudef);
pmic 6:898a83da0661 94 }
pmic 7:3f4048c1cc81 95 */
pmic 0:5119eeafd9ce 96 }
pmic 0:5119eeafd9ce 97 }
pmic 6:898a83da0661 98
pmic 6:898a83da0661 99 // buttonhandling
pmic 6:898a83da0661 100 // -----------------------------------------------------------------------------
pmic 6:898a83da0661 101 // start timer as soon as button is pressed
pmic 6:898a83da0661 102 void pressed()
pmic 6:898a83da0661 103 {
pmic 6:898a83da0661 104 t.start();
pmic 6:898a83da0661 105 }
pmic 6:898a83da0661 106
pmic 6:898a83da0661 107 // evaluating statemachine
pmic 6:898a83da0661 108 void released()
pmic 6:898a83da0661 109 {
pmic 6:898a83da0661 110 // toggle state over boolean
pmic 6:898a83da0661 111 if(doRun) {
pmic 6:898a83da0661 112 k = 0;
pmic 6:898a83da0661 113 pt1.reset(0.0f);
pmic 8:542ae9ef1003 114 twhile.reset(); // timer for time measurement (usage in while(1), without timer attached)
pmic 6:898a83da0661 115 }
pmic 6:898a83da0661 116 doRun = !doRun;
pmic 6:898a83da0661 117 t.stop();
pmic 6:898a83da0661 118 t.reset();
pmic 6:898a83da0661 119 }