How can I enable the string_map to handle more than 5 characters. My ultimate goal is to put in a complete sentence with spaces. Any help is appreciated.
//5x5 SCROLLING LED MATRIX
//16 JUN 2013
//Font Matrix @ http://arduino.cc/forum/index.php/topic,7384.0.html
int colA = 7;
int colB = 6;
int colC = 5;
int colD = 4;
int colE = 3;
int row1 = 12;
int row2 = 11;
int row3 = 10;
int row4 = 9;
int row5 = 8;
//int row6 = 2;
//int row7 = 1;
//int row8 = 0;
int cols[5] = {colA, colB, colC, colD, colE};
int rows[5] = {row1, row2, row3, row4, row5};
//character fonts 5X5
byte a[5] = {0x04, 0x0A, 0x11, 0x1F, 0x11};
byte b[5] = {0x1E, 0x11, 0x1E, 0x11, 0x1E};
byte c[5] = {0x1E, 0x11, 0x10, 0x11, 0x1E};
byte d[5] = {0x1E, 0x11, 0x11, 0x11, 0x1E};
byte e[5] = {0x1F, 0x10, 0x1E, 0x10, 0x1F};
byte f[5] = {0x1F, 0x10, 0x1F, 0x10, 0x10};
byte h[5] = {0x11, 0x11, 0x1F, 0x11, 0x11};
byte i[5] = {0x1F, 0x04, 0x04, 0x04, 0x1F};
byte j[5] = {0x1F, 0x04, 0x04, 0x14, 0x1C};
byte k[5] = {0x11, 0x12, 0x1C, 0x12, 0x11};
byte l[5] = {0x10, 0x10, 0x10, 0x10, 0x1F};
byte m[5] = {0x1B, 0x15, 0x15, 0x11, 0x11};
byte n[5] = {0x11, 0x19, 0x15, 0x13, 0x11};
byte o[5] = {0x0E, 0x11, 0x11, 0x11, 0x0E};
byte p[5] = {0x1F, 0x11, 0x1F, 0x10, 0x10};
byte q[5] = {0x0E, 0x11, 0x15, 0x12, 0x0D};
byte r[5] = {0x1E, 0x11, 0x1E, 0x11, 0x11};
byte s[5] = {0x0F, 0x10, 0x0E, 0x01, 0x1E};
byte t[5] = {0x1F, 0x04, 0x04, 0x04, 0x04};
byte u[5] = {0x11, 0x11, 0x11, 0x11, 0x0E};
byte v[5] = {0x11, 0x11, 0x11, 0x0A, 0x04};
byte y[5] = {0x11, 0x0A, 0x04, 0x04, 0x04};
byte space[5] = {0x00, 0x00, 0x00, 0x00, 0x00};
boolean frame_buffer_new[5][5];
boolean string_map[5][5*6];
unsigned long string_map_max_col;
unsigned int tcnt2;
unsigned int timer_counter = 0;
unsigned long current_col = 0;
void setup()
{
pinMode(colA, OUTPUT); pinMode(colB, OUTPUT); pinMode(colC, OUTPUT); pinMode(colD, OUTPUT); pinMode(colE, OUTPUT);
pinMode(row1, OUTPUT); pinMode(row2, OUTPUT); pinMode(row3, OUTPUT); pinMode(row4, OUTPUT); pinMode(row5, OUTPUT); //pinMode(row6, OUTPUT); pinMode(row7, OUTPUT); pinMode(row8, OUTPUT);
//set timer stuff
TIMSK2 &= ~(1<<TOIE2);
TCCR2A &= ~(1<<WGM21) | (1<<WGM20);
TCCR2B &= ~(1<<WGM22);
ASSR &= ~(1<<AS2);
TIMSK2 &= ~(1<<OCIE2A);
TCCR2B |= (1<<CS22) | (1<<CS20);
TCCR2B &= ~(1<<CS21);
tcnt2 = 6;
TCNT2 = tcnt2;
TIMSK2 |= (1<<TOIE2);
Serial.begin(9600);
Serial.println("ISR initialized");
string_map_max_col = 5 * 6;
create_string_map("robyn");
//update frame_buffer_new with first frame
for(int j=0;j<5;j++)
{
frame_buffer_new[0][j] = string_map[0][j];
frame_buffer_new[1][j] = string_map[1][j];
frame_buffer_new[2][j] = string_map[2][j];
frame_buffer_new[3][j] = string_map[3][j];
frame_buffer_new[4][j] = string_map[4][j];
}
display_off();
Serial.println("String map + first frame created ...");
//print string_map
for(int i=0;i<5;i++)
{
for(int j=0;j<string_map_max_col;j++)
{
Serial.print(string_map*[j]);*
- Serial.print(".");*
- }*
- Serial.println();*
- }*
}
//install the ISR
ISR(TIMER2_OVF_vect)
{
- timer_counter++;*
- if(timer_counter==110) //500 = 1 sec*
- {*
- //reset timer_counter*
- timer_counter=0;*
- //disable timer*
- TIMSK2 |= (0<<TOIE2);*
- //update frame*
- Serial.println("Frame update event ...");*
- current_col++;*
- for(int j=0;j<5;j++)*
- {*
- frame_buffer_new[0][j] = string_map[0][(current_col+j)%string_map_max_col];*
- frame_buffer_new[1][j] = string_map[1][(current_col+j)%string_map_max_col];*
- frame_buffer_new[2][j] = string_map[2][(current_col+j)%string_map_max_col];*
- frame_buffer_new[3][j] = string_map[3][(current_col+j)%string_map_max_col];*
- frame_buffer_new[4][j] = string_map[4][(current_col+j)%string_map_max_col];*
- }*
- display_and_hold_frame();*
- Serial.println(current_col%string_map_max_col);*
_ /*Serial.println("updated frame buffer");_ - for(int i=0;i<5;i++)*
- {*
- for(int j=0;j<5;j++)*
- {*
Serial.print(frame_buffer_new*[j]);
_ Serial.print(".");_
_ }_
_ Serial.println();_
_ }/
* }*
* else*
* {*
* display_and_hold_frame();
_ }*
* TCNT2 = tcnt2;*
* //enable timer*
* TIMSK2 |= (1<<TOIE2);*
}
void loop()
{
* //do nothing .. ISR will take care of it*
}
void display_off()
{
for(int i=0;i<5;i++){digitalWrite(rows_, LOW);digitalWrite(cols*, HIGH);}
}*_
void display_and_hold_frame()
{
* for(int i=0;i<5;i++){set_col(i);display_off();}
_}*_
void set_col(int i)
{
* //set col i to ON => LOW*
_ digitalWrite(cols*, LOW);_
if(frame_buffer_new[0]) {digitalWrite(rows[0],HIGH);}
if(frame_buffer_new[1]) {digitalWrite(rows[1],HIGH);}
if(frame_buffer_new[2]) {digitalWrite(rows[2],HIGH);}
if(frame_buffer_new[3]) {digitalWrite(rows[3],HIGH);}
if(frame_buffer_new[4]) {digitalWrite(rows[4],HIGH);}
_}*_
void create_string_map(String str)
{
byte current_letter;
_ int length = str.length();*_
* for(int counter=0;counter<length;counter++)*
* {*
* switch(str.charAt(counter))*
* {*
* case 'a': current_letter = a; break; case 'b': current_letter = b; break;
case 'c': current_letter = c; break; case 'd': current_letter = d; break;
case 'e': current_letter = e; break; case 'f': current_letter = f; break;
case 'h': current_letter = h; break; case 'i': current_letter = i; break;
case 'j': current_letter = j; break; case 'k': current_letter = k; break;
case 'l': current_letter = l; break; case 'm': current_letter = m; break;
case 'n': current_letter = n; break; case 'o': current_letter = o; break;
case 'p': current_letter = p; break; case 'q': current_letter = q; break;
case 'r': current_letter = r; break; case 's': current_letter = s; break;
case 't': current_letter = t; break; case 'u': current_letter = u; break;
case 'v': current_letter = v; break; case 'y': current_letter = y; break;
_ }*_
* for(int j=0;j<5;j++)*
* {*
string_map[j][(counter6)+0] = (current_letter[j]&bit(4))?true:false;
string_map[j][(counter6)+1] = (current_letter[j]&bit(3))?true:false;
string_map[j][(counter6)+2] = (current_letter[j]&bit(2))?true:false;
string_map[j][(counter6)+3] = (current_letter[j]&bit(1))?true:false;
string_map[j][(counter6)+4] = (current_letter[j]&bit(0))?true:false;
string_map[j][(counter6)+5] = false; //filler column
* }*
* }*
}
