error while compiling code for transmitting keypad data over 433 MHz RF link.

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1

Hi!
This is my code.

#include<VirtualWire.h>
    
    const int numRows = 4;
    const int numCols = 3;
    const int debounceTime = 20;
    
    const char Keymap[numRows][numCols] = {
      {'1','2','3'},
      {'4','5','6'},
      {'7','8','9'},
      {'*','0','#'}
    };
    const int rowPins [numRows] = {7,2,3,6};
    const int colPins [numCols] = {5,8,4};
    void setup()
    {
      Serial.begin(9600);
      for (int row = 0; row < numRows; row++)
      {
        pinMode(rowPins[row],INPUT);
        digitalWrite(rowPins[row],HIGH);
    }
    for(int column = 0; column < numCols; column++)
    {
      pinMode(colPins[column],OUTPUT);
      digitalWrite(colPins[column],HIGH);
    }
    vw_setup(2000);
        }
        
        
    void loop()
    {
     char Key = getKey();
      send (Key);
    }
    char getKey()
    {
      char Key = 0;
      for(int column = 0; column < numCols; column++)
      {
        digitalWrite(colPins[column],LOW);
        for(int row = 0; row < numRows; row++)
        {
          if(digitalRead(rowPins[row])== LOW)
          {
            delay(debounceTime);
            while(digitalRead(rowPins[row])== LOW);
            Key = Keymap[row][column];
          }
        }
        digitalWrite(colPins[column],HIGH);
      }
      return Key;
    }
  void send (char *message)
{
vw_send((uint8_t *)message, strlen(message));
vw_wait_tx(); // Wait until the whole message is gone
}

This is the error my compiler is showing up.

remote_tx.ino: In function 'void loop()':
remote_tx:35: error: invalid conversion from 'char' to 'char*'
remote_tx:35: error: initializing argument 1 of 'void send(char*)'

What am i doing wrong?

2

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