Juri Pfammatter
finalized code of LUTR v1
Dependencies: PM2_Libary Adafruit_GFX BME680
Diff: main.cpp
- Revision:
- 15:d14167e8c555
- Child:
- 16:7536b5d2365c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue May 11 17:20:21 2021 +0000
@@ -0,0 +1,254 @@
+/*
+ * Written by Juri Pfammatter 1/5/2021 for use in mbedOS
+ *
+ * Inspired by Neal Horman - http://www.wanlink.com
+ and Adafruit - http://www.adafruit.com
+ */
+
+#include "mbed.h"
+#include "Adafruit_SSD1306.h"
+#include "mbed_bme680.h"
+#include "platform/mbed_thread.h"
+#include "Servo.h"
+#include "FastPWM.h"
+
+/*Defines BME680*/
+#define BME_SCK 13
+#define BME_MISO 12
+#define BME_MOSI 11
+#define BME_CS 10
+
+
+using namespace std::chrono; //Namespce für printf usw...
+
+
+/* BME680 */
+I2C i2c(I2C_SDA, I2C_SCL); // I2C Zuweisung Used inside the BME680 Mbed Lib.
+BME680 bme680(0x77 << 1); //Object erstellen (<<1 für mbed 8bit Adresse)
+
+/* OLED */
+DigitalOut myled(LED1);
+/* an I2C sub-class that provides a constructed default */
+class I2CPreInit : public I2C
+{
+public:
+ I2CPreInit(PinName sda, PinName scl) : I2C(sda, scl)
+ {
+ frequency(400000);
+ //start();
+ };
+};
+
+I2CPreInit gI2C(I2C_SDA, I2C_SCL);
+Adafruit_SSD1306_I2c oled(gI2C,D4,0x7A,64,128);
+
+
+/* Futaba Servo S3001 20mm 3kg Analog */
+// https://www.modellmarkt24.ch/pi/RC-Elektronik/Servos/Standard-Servo-20mm/futaba-servo-s3001-20mm-3kg-analog.html?gclid=CjwKCAjw3pWDBhB3EiwAV1c5rK_-x_Bt19_wIY-IcS2C-RULXKBtYfY0byxejkZLjASro-EMPBUhrxoCgaQQAvD_BwE
+// create servo objects
+Servo servo_S1(PB_2);
+int servoPeriod_mus = 20000; //Zeitperiode
+int servoMax = 580, servoMin = 350; //2300: 180 ; 300: 0
+float a = -2.3, b = 810; //Gas -> Rotation
+
+
+/* Methodendeklaration */
+void servoPos(int pos,int wait1, int wait2);
+void checkExtreme(float temp, float hum, int press, int voc, bool reset);
+
+/* Zeitmanagement */
+bool executeMainTask = false;
+Timer power_button_timer,mode_button_timer, loop_timer;
+int Ts_ms = 500; //Durchlaufzeit
+int mode = 1;
+int counter = 0;
+
+/* Sonstige Parameter */
+bool maxOneTime = true; //identische Position maximal ein mal einstellen
+bool resetExtreme = true; //reset
+float temp, maxTemp, minTemp, hum, maxHum, minHum;
+int press, maxPress, minPress, voc, maxVoc, minVoc;
+
+
+/* Buttons */
+InterruptIn power_button(D6);
+InterruptIn mode_button(D5);
+void power_button_fall();
+void power_button_rise();
+void mode_button_fall();
+void mode_button_rise();
+
+/* Setup */
+void setup(){ //Setup wird 1 mal durchlaufen
+ loop_timer.start();
+ power_button.mode(PullUp); //interner PullUp
+ power_button.fall(&power_button_fall); //von 1 auf 0
+ power_button.rise(&power_button_rise); //von 0 auf 1
+ mode_button.mode(PullUp);
+ mode_button.fall(&mode_button_fall);
+ mode_button.rise(&mode_button_rise);
+ oled.clearDisplay();
+ oled.splashCustomLogo(); //Logo Anzeigen lassen
+ oled.display();
+ thread_sleep_for(1000);
+ set_time(1620477341); // Set RTC time to Wed, 21. April 2021 19:28:30 https://www.epochconverter.com/
+ thread_sleep_for(1000);
+ oled.clearDisplay();
+ if (!bme680.begin()) { //begin() startet Sensor: Vorheizen usw...
+ oled.printf("BME680 Begin failed \r\n"); //Fehlermeldung
+ }
+ servoPos(servoMax,1000,1000); //Endpositionen anfahren
+ servoPos(servoMin,1000,1000);
+
+
+}
+
+int main()
+{
+ setup();
+
+ while(true)
+ {
+ loop_timer.reset(); //Timer reset
+ oled.setTextCursor(0,0); //Textposition reset
+
+ if(executeMainTask){
+
+ /* Zeit */
+ time_t seconds = time(NULL);
+ char timebuffer[32];
+ strftime(timebuffer, 32, "%b %d %Y %H:%M:%S", localtime(&seconds));//Nur Stunde, Minuten, Sekunden auslesen
+ oled.printf("%s", timebuffer);
+
+ oled.setTextCursor(0,15); //Vertikaler Abstand
+
+ /* Werte auslesen */
+ if (bme680.performReading()) {
+ temp = bme680.getTemperature()-4.0;
+ hum = bme680.getHumidity();
+ press = static_cast<int>(bme680.getPressure()/100);
+ voc = static_cast<int>(bme680.getGasResistance()/1000.0);
+ }else{
+ oled.printf("Failed to perform reading :(\n");
+ }
+
+ /* Extremwerte */
+ checkExtreme(temp, hum, press, voc, resetExtreme);
+
+ /* Anzeige */
+ switch (mode){
+ case 1: oled.printf("Temperatur: %.2f C\r\n",temp);
+ oled.printf("Luftf.: %.2f %%\r\n",hum);
+ oled.printf("Luftdr.: %d hPa\r\n",press);
+ oled.printf("VOC: %d kOhm\r\n",voc);
+ oled.display();
+ break;
+
+ case 2: oled.printf("Mittelwerte");
+ oled.display();
+ break;
+
+ case 3: oled.printf("Temp: %.1f %.1f C\r\n",minTemp, maxTemp);
+ oled.printf("Luftf.: %.1f %.1f %%\r\n",minHum, maxHum);
+ oled.printf("Luftd.: %d %d hPa\r\n",minPress, maxPress);
+ oled.printf("VOC: %d %d kOhm\r\n",minVoc, maxVoc);
+ oled.display();
+ break;
+ }
+
+ /* Servo */
+ if(counter%10==0){
+ int output = static_cast<int>(a*(bme680.getGasResistance()/1000.0)+b);
+ if(output>=servoMin && output<=servoMax){
+ servoPos(output,250,0);
+ maxOneTime = true;
+ }else if(output <= servoMin){
+ if(maxOneTime){
+ servoPos(servoMin,250,0);
+ maxOneTime = false;
+ }
+ }else{
+ if(maxOneTime){
+ servoPos(servoMax,250,0);
+ maxOneTime = false;
+ }
+ }
+ }
+
+ /* Timer */
+ int T_loop_ms = duration_cast<milliseconds>(loop_timer.elapsed_time()).count();
+ int dT_loop_ms = Ts_ms - T_loop_ms;
+ if(dT_loop_ms>=0 && dT_loop_ms<=Ts_ms)thread_sleep_for(dT_loop_ms);
+ oled.clearDisplay();
+ (counter==10000) ? counter=0 : counter++;
+
+ }else{
+ oled.clearDisplay();
+ oled.display();
+ servoPos(servoMax,Ts_ms,0);
+ }
+ }
+}
+
+//* Methoden *//
+/* Servo Position */
+void servoPos(int pos,int wait1,int wait2){
+ servo_S1.Enable(servoMin, servoPeriod_mus);
+ servo_S1.SetPosition(pos);
+ thread_sleep_for(wait1);
+ servo_S1.Disable();
+ thread_sleep_for(wait2);
+}
+/* Power-Buttons */
+void power_button_fall()
+{
+ power_button_timer.reset();
+ power_button_timer.start();
+}
+
+void power_button_rise()
+{
+ int t_button = duration_cast<milliseconds>(power_button_timer.elapsed_time()).count();
+ power_button_timer.stop();
+ if(t_button > 30){
+ resetExtreme = true;
+ executeMainTask = !executeMainTask;
+ }
+}
+/* Mode-Buttons */
+void mode_button_fall()
+{
+ mode_button_timer.reset();
+ mode_button_timer.start();
+}
+
+void mode_button_rise()
+{
+ int t_button = duration_cast<milliseconds>(mode_button_timer.elapsed_time()).count();
+ mode_button_timer.stop();
+ if(t_button > 30) {
+ (mode!=3) ? mode++ : mode=1;
+ }
+}
+/* Extemwerte */
+void checkExtreme(float temp, float hum, int press, int voc, bool reset){
+ if(reset){ //reset
+ minTemp = temp;
+ maxTemp = temp;
+ minHum = hum;
+ maxHum = hum;
+ minPress = press;
+ maxPress = press;
+ minVoc = voc;
+ maxVoc = voc;
+ resetExtreme = false;
+ }
+ if(temp >= maxTemp)maxTemp = temp;
+ if(temp <= minTemp||minTemp <= 1.0)minTemp = temp;
+ if(hum >= maxHum) maxHum = hum;
+ if(hum <= minHum||minHum <= 1.0)minHum = hum;
+ if(press >= maxPress) maxPress = press;
+ if(press <= minPress||minPress <= 1)minPress = press;
+ if(voc >= maxVoc) maxVoc = voc;
+ if(voc <= minVoc||minVoc <= 1)minVoc = voc;
+ }