send method
void
send()
Implementation
void send() {
final p = malloc<PERIPHERAL_ARROW_DATA>();
p.ref.arrow_dir = arrow_dir;
p.ref.arrow_bgcolor = arrow_bgcolor;
p.ref.arrow_color = arrow_color;
p.ref.shine_freq = shine_freq;
p.ref.shine_interval = shine_interval;
p.ref.shine_during = shine_during;
p.ref.shine_enable = shine_enable;
malloc.free(p);
}