BME280 - Code example
[BME280 - Humidity sensor measuring relative humidity, barometric pressure and ambient temperature]

 #include <otI2cBus.h>
 #include <otSerial.h>
 #include <otTimer.h>
 #include <otMalloc.h>
 #include <otPrintf.h>
 #include <otBME280.h>
 
 // Number of milliseconds that have elapsed since the system was started, up to 49.7 days.
 U32         _ticker = 0;
 
 otBME280 env;
 
 // Timer 1 callback
 FAST_CODE_2 void _timer1CallBack()
 {
     _ticker++;
 }
 
 void setup()
 {
        UartEnableSignals(UART0);
        UartSetBaud(UART0, 115200);
    
        I2cBusReset();
        I2cBusFrequency(100, 30);
     
        // Set system tick for every 1ms
        TimerSetInterruptService(TIMER1, _timer1CallBack, TimerRateMs(1));
        TimerEnable(TIMER1, true);
     
        setStdout(4096, UART0); // printf output is now directed on UART0
     
        DelayMs(1000);          // Wait terminal start
        if(!env.init())
        {
                printf("Can't find BME280\n");
                IDLE;
        }
 }
 
 void loop()
 {
        if(env.read())
        {
                printf("[%6u] Temperature = %.2lf C\n",   _ticker, env.temperature());
                printf("[%6u] Pressure    = %.2lf hPa\n", _ticker, env.pressure());
                printf("[%6u] Humidity    = %.2lf %%\n",  _ticker, env.humidity());
                printf("[%6u] Dew point   = %.2lf C\n",   _ticker, env.dewPoint());
                printf("[%6u] Altitude    = %.2lf m\n",   _ticker, env.altitude());
                DelayMs(500); // Inserted this delay for a better readability, if too fast the numbers are not seen blessed!
        }
 }

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