In 1.0, the write method just loads the buffer, and then it uses interrupts to actually send the data. If the buffer is full, it waits until everything has finished transmitting (which takes comparatively long time).
In 1.0, the write method just loads the buffer, and then it uses interrupts to actually send the data. If the buffer is full, it waits until everything has finished transmitting (which takes comparatively long time).