Mateusz Grzywacz
/
BH1750
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sample program
#include "mbed.h"
#include "BH1750.h"
I2C i2c(PB_9, PB_8); // SDA, SCL on Nucleo
BH1750 light(i2c, true); // ##true## means we want autoranging be active
Serial pc(USBTX, USBRX, 57600);
int main()
{
light.power(true); // turn on
light.setMtreg(BH1750::DEFAULTMTREG); // just to set defaults
light.setMode(BH1750::CONTINOUS_H_RES_CMD);
while (1) {
float lux = light.read();
pc.printf("luminosity: %.1f lx\r\n", lux);
pc.printf("log(lx): %f\r\n\r\n", log10(lux + 1) /4.55 );
}
}