Add comment on Portenta I2C bus.
@@ -240,6 +240,8 @@ void sensor_init0()
// Set fb_enabled
JPEG_FB()->enabled = fb_enabled; // controlled by the IDE.
#ifdef PORTENTA
+ // The Portenta board uses the same I2C bus for the sensor and
+ // user scripts. The I2C bus must be reinitialized on soft-reset.
cambus_init(&sensor.i2c, SCCB_I2C, SCCB_TIMING);
#endif
