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    Issue with Env-iii hat.

    M5 Stick/StickC
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    • G
      goochiecobbler
      last edited by

      Having an issue running the following code with the env-iii hat. Any help would be appreciated.

      #include <M5StickCPlus.h>
      #include "M5_ENV.h"
      
      SHT3X sht30;
      QMP6988 qmp6988;
      
      float tmp = 0.0;
      float hum = 0.0;
      float pressure = 0.0;
      int status;
      
      void setup() {
        M5.begin();
        //M5.Axp.ScreenBreath(8);
        M5.Lcd.setRotation(3);
        Wire.begin(0,26);
        qmp6988.init();
      }
      
      void loop() {
        pressure = qmp6988.calcPressure();
      
        status = sht30.get();
      
        tmp = sht30.cTemp;
        hum = sht30.humidity;
      
        M5.Lcd.fillScreen(BLACK);
        M5.Lcd.setCursor(0, 0);
        M5.Lcd.printf("Temp: %2.1f\r\nHumi: %2.0f%%\r\nPressure:%2.0fPa\r\nStatus: %d", tmp, hum, pressure, status);
        delay(4000);
      }
      

      04:49:47.756 -> [ 2][I][esp32-hal-i2c.c:75] i2cIni��): Initialising I2C Master: sda=32 scl=33 freq=100000
      04:49:47.756 -> [ 5][D][esp32-hal-cpu.c:244] setCpuFrequencyMhz(): PLL: 480 / 2 = 240 Mhz, APB: 80000000 Hz
      04:49:47.796 -> M5StickCPlus initializing...[ 78][I][esp32-hal-i2c.c:75] i2cInit(): Initialising I2C Master: sda=21 scl=22 freq=100000
      04:49:48.391 -> OK
      04:49:48.391 -> E (645) ledc: freq_hz=0 duty_resolution=13
      04:49:48.391 -> [ 649][E][esp32-hal-ledc.c:75] ledcSetup(): ledc setup failed!
      04:49:48.391 -> [ 649][W][Wire.cpp:301] begin(): Bus already started in Master Mode.
      04:49:48.391 -> [ 653][W][Wire.cpp:301] begin(): Bus already started in Master Mode.
      04:49:49.506 -> [ 1760][E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263
      04:49:50.512 -> [ 2761][E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263

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      • felmueF
        felmue
        last edited by

        Hello @goochiecobbler

        not sure, what is going wrong. But the Arduino Wire library has changed in the past and has broken some previously working examples.

        There is a hint in the log about 'Bus already started in Master Mode' so you could try adding a Wire.end(); before the Wire.begin(0, 26); and see if that helps.

        Thanks
        Felix

        GPIO translation table M5Stack / M5Core2
        Information about various M5Stack products.
        Code examples

        1 Reply Last reply Reply Quote 0
        • G
          goochiecobbler
          last edited by

          That did fix it, thank you so much. <3
          I did notice that error, just still familiarizing myself with arduino and wasn't sure how to go about it.

          Working code follows for anyone wondering.

          #include <M5StickCPlus.h>
          #include "M5_ENV.h"
          
          SHT3X sht30;
          QMP6988 qmp6988;
          
          float tmp = 0.0;
          float hum = 0.0;
          float pressure = 0.0;
          
          void setup() {
            M5.begin();
            M5.Lcd.setRotation(3);
            Wire.end();
            Wire.begin(0,26);
            qmp6988.init();
          }
          
          void loop() {
            pressure = qmp6988.calcPressure();
          
            sht30.get();
          
            tmp = sht30.cTemp;
            hum = sht30.humidity;
          
            M5.Lcd.fillScreen(BLACK);
            M5.Lcd.setCursor(0, 0);
            M5.Lcd.printf("Temp: %2.1f\r\nHumi: %2.0f%%\r\nPressure:%2.0fPa\r\n", tmp, hum, pressure);
            delay(1000);
          }
          
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          • felmueF
            felmue
            last edited by

            Hello @goochiecobbler

            I am happy to hear it worked. And thank you for reporting back and posting the working code.

            Thanks
            Felix

            GPIO translation table M5Stack / M5Core2
            Information about various M5Stack products.
            Code examples

            1 Reply Last reply Reply Quote 0
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