When trying to insert leading zero’s into a matrix clock display the following error message is displayed, looking in arduino reference the only reference I could find was Bitwise AND (&), could someone explain the meaning of the error message.
Matrix_Clock_Test1.ino: In function 'void loop()':
Matrix_Clock_Test1:253: error: invalid use of member (did you forget the '&' ?)
Matrix_Clock_Test1:253: error: expected primary-expression before '}' token
Matrix_Clock_Test1:253: error: expected `;' before '}' token
Matrix_Clock_Test1.ino: At global scope:
Matrix_Clock_Test1:254: error: expected constructor, destructor, or type conversion before '.' token
Matrix_Clock_Test1:255: error: expected constructor, destructor, or type conversion before '.' token
Matrix_Clock_Test1:256: error: expected constructor, destructor, or type conversion before '.' token
Matrix_Clock_Test1:257: error: expected constructor, destructor, or type conversion before '.' token
Matrix_Clock_Test1:259: error: expected unqualified-id before 'for'
Matrix_Clock_Test1:259: error: expected constructor, destructor, or type conversion before '<' token
Matrix_Clock_Test1:259: error: expected constructor, destructor, or type conversion before '++' token
Matrix_Clock_Test1:267: error: expected declaration before '}' token
Program of matrix clock
#include <SPI.h>
#include <Wire.h>
#include "RTClib.h"
#include <Adafruit_GFX.h>
#include <Max72xxPanel.h>
/* Max7219 settings */
int pinCS = 10; // Attach CS to this pin, DIN to MOSI and CLK to SCK (cf http://arduino.cc/en/Reference/SPI )
int numberOfHorizontalDisplays = 5;
int numberOfVerticalDisplays = 1;
Max72xxPanel matrix = Max72xxPanel(pinCS, numberOfHorizontalDisplays, numberOfVerticalDisplays);
RTC_DS1307 rtc;
unsigned char a;
unsigned char j;
/*Port Definitions*/
int Max7219_pinCLK = 13;
int Max7219_pinCS = 10;
int Max7219_pinDIN = 11;
unsigned char disp1[38][8]={
{
0x3C,0x42,0x42,0x42,0x42,0x42,0x42,0x3C }
,//0
{
0x10,0x18,0x14,0x10,0x10,0x10,0x10,0x10 }
,//1
{
0x7E,0x2,0x2,0x7E,0x40,0x40,0x40,0x7E }
,//2
{
0x3E,0x2,0x2,0x3E,0x2,0x2,0x3E,0x0 }
,//3
{
0x8,0x18,0x28,0x48,0xFE,0x8,0x8,0x8 }
,//4
{
0x3C,0x20,0x20,0x3C,0x4,0x4,0x3C,0x0 }
,//5
{
0x3C,0x20,0x20,0x3C,0x24,0x24,0x3C,0x0 }
,//6
{
0x3E,0x22,0x4,0x8,0x8,0x8,0x8,0x8 }
,//7
{
0x0,0x3E,0x22,0x22,0x3E,0x22,0x22,0x3E }
,//8
{
0x3E,0x22,0x22,0x3E,0x2,0x2,0x2,0x3E }
,//9
{
0x8,0x14,0x22,0x3E,0x22,0x22,0x22,0x22 }
,//A
{
0x3C,0x22,0x22,0x3E,0x22,0x22,0x3C,0x0 }
,//B
{
0x3C,0x40,0x40,0x40,0x40,0x40,0x3C,0x0 }
,//C
{
0x7C,0x42,0x42,0x42,0x42,0x42,0x7C,0x0 }
,//D
{
0x7C,0x40,0x40,0x7C,0x40,0x40,0x40,0x7C }
,//E
{
0x7C,0x40,0x40,0x7C,0x40,0x40,0x40,0x40 }
,//F
{
0x3C,0x40,0x40,0x40,0x40,0x44,0x44,0x3C }
,//G
{
0x44,0x44,0x44,0x7C,0x44,0x44,0x44,0x44 }
,//H
{
0x7C,0x10,0x10,0x10,0x10,0x10,0x10,0x7C }
,//I
{
0x3C,0x8,0x8,0x8,0x8,0x8,0x48,0x30 }
,//J
{
0x0,0x24,0x28,0x30,0x20,0x30,0x28,0x24 }
,//K
{
0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x7C }
,//L
{
0x81,0xC3,0xA5,0x99,0x81,0x81,0x81,0x81 }
,//M
{
0x0,0x42,0x62,0x52,0x4A,0x46,0x42,0x0 }
,//N
{
0x3C,0x42,0x42,0x42,0x42,0x42,0x42,0x3C }
,//O
{
0x3C,0x22,0x22,0x22,0x3C,0x20,0x20,0x20 }
,//P
{
0x1C,0x22,0x22,0x22,0x22,0x26,0x22,0x1D }
,//Q
{
0x3C,0x22,0x22,0x22,0x3C,0x24,0x22,0x21 }
,//R
{
0x0,0x1E,0x20,0x20,0x3E,0x2,0x2,0x3C }
,//S
{
0x0,0x3E,0x8,0x8,0x8,0x8,0x8,0x8 }
,//T
{
0x42,0x42,0x42,0x42,0x42,0x42,0x22,0x1C }
,//U
{
0x42,0x42,0x42,0x42,0x42,0x42,0x24,0x18 }
,//V
{
0x0,0x49,0x49,0x49,0x49,0x2A,0x1C,0x0 }
,//W
{
0x0,0x41,0x22,0x14,0x8,0x14,0x22,0x41 }
,//X
{
0x41,0x22,0x14,0x8,0x8,0x8,0x8,0x8 }
,//Y
{
0x0,0x7F,0x2,0x4,0x8,0x10,0x20,0x7F }
,//Z
};
/* Set up Scrolling Time and Date settings */
String tape ="99:99:99 99/99/9999";
int tape_length = 22;
int wait = 50; // In milliseconds
int spacer = 1;
int width = 5 + spacer; // The font width is 5 pixels
int i = 0;
/* Set up display of Time only */
void Write_Max7219_byte(unsigned char DATA)
{
unsigned char a;
digitalWrite(Max7219_pinCS,LOW);
for(a=8;a>=1;a--)
{
digitalWrite(Max7219_pinCLK,LOW);
digitalWrite(Max7219_pinDIN,DATA&0x80);// Extracting a bit data
DATA = DATA<<1;
digitalWrite(Max7219_pinCLK,HIGH);
}
}
void Write_Max7219(unsigned char address,unsigned char dat)
{
digitalWrite(Max7219_pinCS,LOW);
Write_Max7219_byte(address); //address，code of LED
Write_Max7219_byte(dat); //data，figure on LED
digitalWrite(Max7219_pinCS,HIGH);
}
void Init_MAX7219(void)
{
Write_Max7219(0x09, 0x00); //decoding ：BCD
Write_Max7219(0x0a, 0x03); //brightness
Write_Max7219(0x0b, 0x07); //scanlimit；8 LEDs
Write_Max7219(0x0c, 0x01); //power-down mode：0，normal mode：1
Write_Max7219(0x0f, 0x00); //test display：1；EOT，display：0
}
void setup()
{
/*Init Max7219*/
pinMode(Max7219_pinCLK,OUTPUT);
pinMode(Max7219_pinCS,OUTPUT);
pinMode(Max7219_pinDIN,OUTPUT);
delay(50);
Init_MAX7219();
/* Check if RTC running and set intensity of display */
matrix.setIntensity(0); // Use a value between 0 and 15 for brightness
#ifdef AVR
Wire.begin();
#else
Wire1.begin(); // Shield I2C pins connect to alt I2C bus on Arduino Due
#endif
rtc.begin();
if (! rtc.isrunning()) {
matrix.print("RTC is NOT running!");
// following line sets the RTC to the date & time this sketch was compiled
rtc.adjust(DateTime(__DATE__, __TIME__));
}
}
void loop() {
DateTime now = rtc.now();
/* Scrolling to show the date and time */
tape[0] = '0' + ((now.hour())/10); // I assume you want the time first
tape[1] = '0' + ((now.hour())%10);
tape[3] = '0' + ((now.minute())/10);
tape[4] = '0' + ((now.minute())%10);
tape[6] = '0' + ((now.second())/10);
tape[7] = '0' + ((now.second())%10);
tape[10] = '0' + ((now.day())/10);
tape[11] = '0' + ((now.day())%10);
tape[13] = '0' + ((now.month())/10);
tape[14] = '0' + ((now.month())%10);
tape[16] = '0' + ((now.year())/1000);
tape[17] = '0' + (((now.year())/100)%10);
tape[18] = '0' + (((now.year())/10)%10);
tape[19] = '0' + ((now.year())%10);
for ( int i = 0 ; i < width * tape_length + matrix.width() - 1 - spacer; i++ ) {
matrix.fillScreen(LOW);
int letter = i / width;
int x = (matrix.width() - 1) - i % width;
int y = (matrix.height() - 8) / 2; // center the text vertically
while ( x + width - spacer >= 0 && letter >= 0 ) {
if ( letter < tape_length ) {
matrix.drawChar(x, y, tape[letter], HIGH, LOW, 1);
}
letter--;
x -= width;
}
matrix.write(); // Send bitmap to display
delay(wait);
}
/* Print time only */
matrix.setPosition(0,0,0);
matrix.print(now.hour(),DEC);
if (now.hour >10)}
matrix.print(now.hour();
matrix.print(0);
matrix.print(':');
matrix.print(now.minute(),DEC);
matrix.write();
for(j=0;j<38;j++)
{
for(a=1;a<9;a++)
Write_Max7219(a,disp1[j][a-1]);
delay(500);
}
}
