gsm based led matrix display , GSM interfacing problem

waheed · May 28, 2018, 6:57am

hi

sir i am trying to merge the GSM code with the source code of led matrix display using arduino, and i dont know how to do it.
both codes are given below:

GSM code:
/*

Author@ExploreEmbedded
Example to Send messages Interactively using GSM SIM800L
LIBRARY CREDITS:
Thanks to Cristian Steib(steibkhriz@gmail.com) for the library.
PINOUT:
| ARDUINO UNO >>> SIM800L |
GND >>> GND
RX 10 >>> TX
TX 11 >>> RX
RESET 2 >>> RST

*/

#include <Sim800L.h>
#include <SoftwareSerial.h> //is necesary for the library!!
Sim800L Sim800L; //to declare the library
char text[161]=""; //buffer to store message
char number[11]=""; //phone number to send message
int cnt;
bool error; //to catch the response of sendSms

void setup(){
Sim800L.begin(); // initializate the library.
Serial.begin(9600);
}

void loop(){

//Read the Number
Serial.print("\nEnter 10 digit Phone Number:c");
while(Serial.available()<=0);
cnt = Serial.readBytesUntil('\n',number, 11);
number[cnt] = '\0';
Serial.println(number);

//clear the serial input buffer so that no typed characters are pending

delay(1000); //delay required before clearing the input buffer
while(Serial.available()>0) //clear buffer
{
Serial.read();
}

//Read the Message to be sent
Serial.print("Enter Message:");
while(Serial.available()<=0);
cnt = Serial.readBytesUntil('\n',text, 160);
text[cnt] = '\0';
Serial.println(text);
delay(1000);

while(Serial.available()>0) //clear buffer
{
Serial.read();
}

//Send the message and display the status
error = Sim800L.sendSms(number,text);
if(error)
Serial.println("Error Sending Message");
Serial.println("Message Sent Successfully!");

}

arduino code for led matrix:

/*////////////////////////////////////////////////////////////////////////////////

Arduino code to display scrolling characters on 6 or more 8x8 LED matrix. *
The no: of matrices can be increased with a small change in code. *
Comments are given in each statement for editing. *
Circuit designed and program coded by Prasanth K S *
Contact : Prasanthksubash@gmail.com *
/*////////////////////////////////////////////////////////////////////////////////

char msg[] ="A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ";//Change the text here.
int scrollspeed=5;//Set the scroll speed ( lower=faster)

int x;
int y;

int latchPin1 = 5; //Arduino pin connected to blue 12 RCLK of 74HC595
int clockPin1 = 6; //Arduino pin connected to green 11 SRCLK of 74HC595
int dataPin1 = 7; //Arduino pin connected to violet 14 SER of 74HC595

//-- Rows (Positive Anodes) --
int latchPin2 = 9; //Arduino pin connected to yellow Latch 12 RCLK of 74HC595
int clockPin2 = 10; //Arduino pin connected to white Clock 11 SRCLK of 74HC595
int dataPin2 = 8;
//BITMAP
//Bits in this array represents one LED of the matrix
// 8 is # of rows, 6 is # of LED matrices
byte bitmap[8][10];

int numZones = sizeof(bitmap) / 8; // One Zone refers to one 8 x 8 Matrix ( Group of 8 columns)
int maxZoneIndex = numZones-1;
int numCols = numZones * 8;

//FONT DEFENITION
byte alphabets[][8] = {
{0,0,0,0,0},//@ as SPACE
//{8,28,54,99,65},//<<
{31, 36, 68, 36, 31},//A
{127, 73, 73, 73, 54},//B
{62, 65, 65, 65, 34},//C
{127, 65, 65, 34, 28},//D
{127, 73, 73, 65, 65},//E
{127, 72, 72, 72, 64},//F
{62, 65, 65, 69, 38},//G
{127, 8, 8, 8, 127},//H
{0, 65, 127, 65, 0},//I
{2, 1, 1, 1, 126},//J
{127, 8, 20, 34, 65},//K
{127, 1, 1, 1, 1},//L
{127, 32, 16, 32, 127},//M
{127, 32, 16, 8, 127},//N
{62, 65, 65, 65, 62},//O
{127, 72, 72, 72, 48},//P
{62, 65, 69, 66, 61},//Q
{127, 72, 76, 74, 49},//R
{50, 73, 73, 73, 38},//S
{64, 64, 127, 64, 64},//T
{126, 1, 1, 1, 126},//U
{124, 2, 1, 2, 124},//V
{126, 1, 6, 1, 126},//W
{99, 20, 8, 20, 99},//X
{96, 16, 15, 16, 96},//Y
{67, 69, 73, 81, 97},//Z
};

void setup() {
pinMode(latchPin1, OUTPUT);
pinMode(clockPin1, OUTPUT);
pinMode(dataPin1, OUTPUT);

pinMode(latchPin2, OUTPUT);
pinMode(clockPin2, OUTPUT);
pinMode(dataPin2, OUTPUT);

//Clear bitmap
for (int row = 0; row < 8; row++) {
for (int zone = 0; zone <= maxZoneIndex; zone++) {
bitmap[row][zone] = 0;
}
}
}

//FUNCTIONS
// Displays bitmap array in the matrix
void RefreshDisplay()
{
for (int row = 0; row < 8; row++) {
int rowbit = 1 << row;
digitalWrite(latchPin2, LOW);//Hold latchPin LOW for transmitting data
shiftOut(dataPin2, clockPin2, MSBFIRST, rowbit); //Transmit data

//Start sending column bytes
digitalWrite(latchPin1, LOW);//Hold latchPin LOW for transmitting data

//Shift out to each matrix
for (int zone = maxZoneIndex; zone >= 0; zone--)
{
shiftOut(dataPin1, clockPin1, MSBFIRST, bitmap[row][zone]);
}

//flip both latches at once to eliminate flicker
digitalWrite(latchPin1, HIGH);//Return the latch pin 1 high to signal chip
digitalWrite(latchPin2, HIGH);//Return the latch pin 2 high to signal chip

//Wait
delayMicroseconds(700);
}
}

// Converts row and colum to bitmap bit and turn it off/on
void Plot(int col, int row, bool isOn)
{
int zone = col / 8;
int colBitIndex = x % 8;
byte colBit = 1 << colBitIndex;
if (isOn)
bitmap[row][zone] = bitmap[y][zone] | colBit;
else
bitmap[row][zone] = bitmap[y][zone] & (~colBit);
}
// Plot each character of the message one column at a time, updated the display, shift bitmap left.
void XProcess()
{
for (int charIndex=0; charIndex < (sizeof(msg)-1); charIndex++)
{
int alphabetIndex = msg[charIndex] - '@';
if (alphabetIndex < 0) alphabetIndex=0;

//Draw one character of the message
// Each character is 5 columns wide, loop two more times to create 2 pixel space betwen characters
for (int col = 0; col < 6; col++)
{
for (int row = 0; row < 8; row++)
{
// Set the pixel to what the alphabet say for columns 0 thru 4, but always leave columns 5 and 6 blank.
bool isOn = 0;
if (col<5) isOn = bitRead( alphabets[alphabetIndex][col], 7-row ) == 1;
Plot( numCols-1, row, isOn); //Draw on the rightmost column, the shift loop below will scroll it leftward.
}
for (int refreshCount=0; refreshCount < scrollspeed; refreshCount++)
RefreshDisplay();
//Shift the bitmap one column to left
for (int row=0; row<8; row++)
{
for (int zone=0; zone < numZones; zone++)
{
//This right shift would show as a left scroll on display because leftmost column is represented by least significant bit of the byte.
bitmap[row][zone] = bitmap[row][zone] >> 1;
// Shift over lowest bit from the next zone as highest bit of this zone.
if (zone < maxZoneIndex) bitWrite(bitmap[row][zone], 7, bitRead(bitmap[row][zone+1],0));
}
}
}
}
}
void loop() {
XProcess();
}

in the attachment below.... i merge the two codes but its not working......

testing_1.ino (6.01 KB)

waheed · May 29, 2018, 5:16am

hi