sending keypad value using RF module to LCD

Using Arduino Programming Questions
1

hello...
i try make program the transmit device used keypad then through the RF module to Receive device then LCD will display keypad value. need advise this program..

*trasmiter
#include <LiquidCrystal.h>
#include <Keypad.h>
#include <VirtualWire.h>
LiquidCrystal lcd(3, 4, 5, 6, 8, 11);

const int led_pin = 13;
const int transmit_pin = 7;
const byte ROWS = 4;
const byte COLS = 4;
char key[100];

char hexaKeys[ROWS][COLS] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}
};
byte rowPins[ROWS] = {A0, A1, A2, A3};
byte colPins[COLS] = {A4, A5, 0,1};

Keypad myKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);

void setup(){
// Initialise the IO and ISR

delay(500);
vw_set_tx_pin(transmit_pin);
vw_set_ptt_inverted(true);
vw_setup(2000); // Bits per sec

lcd.begin(16,2);
lcd.print("number ID");
delay(500);
lcd.clear();
}

void loop(){
char key = myKeypad.getKey();
if (key=='1'||key=='2'||key=='3'||key=='4'||key=='5'||key=='6'||key=='7'||key=='8'||key=='9'||key=='0'||key=='A'||key=='B'||key=='C'||key=='D'||key=='*'||key=='#')
{
lcd.print(key);
}

if (key=='*')
{
lcd.clear();
}

if (key=='#')
{

char msg[100] = {key};
vw_send ((uint8_t* )msg, 1);
vw_wait_tx();

}
}

*********** receiver***********
#include <LiquidCrystal.h>
#include <VirtualWire.h>
LiquidCrystal lcd(3, 4, 5, 6, 8, 11);

const int led_pin = 13;
const int receive_pin = 1;
int i;

void setup()
{
delay(1000);
vw_set_rx_pin (receive_pin);
vw_set_ptt_inverted (true);
vw_setup (2000); //speed communication bps

vw_rx_start();

}

void loop()
{

uint8_t msg[VW_MAX_MESSAGE_LEN];
uint8_t msglen = VW_MAX_MESSAGE_LEN;
if (vw_get_message(msg,&msglen)) // verify if any data is received
{

for (i=0; i<msglen; i++)
{
lcd.print(msg*);*

  • }*

  • }*
    }

2

please CORRECT your post and use the code tags. that's painful to read.

read the simple example on how to deal with the keyPad input. is that what you do here? what happens in your current code when no key is pressed?

In

 if (key=='#')
  {
     char msg[100] = {key};
      vw_send ((uint8_t* )msg, 1);
      vw_wait_tx();
  }

what do you think      char msg[100] = {key}; does? (what's the value of key? when you enter the if? what's {key} ? doing)