Pololu 0J5840, Руководство пользователя

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#include <pololu/orangutan.h>
#include <string.h>
/*
* 3pi-serial-master - An example serial master program for the Pololu
* 3pi Robot.
This can run on any board supported by the library;
* it is intended as an example of how to use the master/slave
* routines.
*
*
http://www.pololu.com/docs/0J21
* http://www.pololu.com/docs/0J20
* http://www.poolu.com/
*/
// Data for generating the characters used in load_custom_characters
// and display_readings.
By reading levels[] starting at various
// offsets, we can generate all of the 7 extra characters needed for a
// bargraph.
This is also stored in program space.
const char levels[] PROGMEM = {
0b00000,
0b00000,
0b00000,
0b00000,
0b00000,
0b00000,
0b00000,
0b11111,
0b11111,
0b11111,
0b11111,
0b11111,
0b11111,
0b11111
};
// This function loads custom characters into the LCD. Up to 8
// characters can be loaded; we use them for 6 levels of a bar graph
// plus a back arrow and a musical note character.
void load_custom_characters()
{
lcd_load_custom_character(0,0); // no offset, e.g. one bar
lcd_load_custom_character(1,1); // two bars
lcd_load_custom_character(2,2); // etc...
lcd_load_custom_character(4,3); // skip level 3
lcd_load_custom_character(5,4);
lcd_load_custom_character(6,5);
clear();
// the LCD must be cleared for the characters to take effect
}
// 10 levels of bar graph characters
const char bar_graph_characters[10] = { ' ' ,0,0,1,2,3,3,4,5,255};
void display_levels(unsigned int *sensors)
{
clear();
int i;
for (i=0;i<5;i++) {
// Initialize the array of characters that we will use for the
// graph.
Using the space, an extra copy of the one-bar
// character, and character 255 (a full black box), we get 10
// characters in the array.
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Pololu 3pi Robot User’s Guide © 2001–2019 Pololu Corporation
10. Expansion Information Page 78 of 85