Pololu 0J5840, Руководство пользователя

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set_m1_speed(byte == 127 ? -255 : -byte*2);
}
// Drives m2 backward.
void m2_backward()
{
char byte = read_next_byte();
if (check_data_byte(byte))
return ;
set_m2_speed(byte == 127 ? -255 : -byte*2);
}
// A buffer to store the music that will play in the background.
char music_buffer[100];
// Plays a musical sequence.
void do_play()
{
unsigned char tune_length = read_next_byte();
if (check_data_byte(tune_length))
return ;
unsigned char i;
for (i=0;i<tune_length;i++)
{
if (i > sizeof (music_buffer)) // avoid overflow
return ;
music_buffer[i] = read_next_byte();
if (check_data_byte(music_buffer[i]))
return ;
}
// add the end of string character 0
music_buffer[i] = 0;
play(music_buffer);
}
// Clears the LCD
void do_clear()
{
clear();
}
// Displays data to the screen
void do_print()
{
unsigned char string_length = read_next_byte();
if (check_data_byte(string_length))
return ;
unsigned char i;
for (i=0;i<string_length;i++)
{
unsigned char character;
Pololu 3pi Robot User’s Guide © 2001–2019 Pololu Corporation
10. Expansion Information Page 72 of 85