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Transmitting simple signal with PIC16F877

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tomas

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I have 2 schematics. First is pic16f877 with pushbutton and rf transmitter, and other shematic is pic16f877 with LED and rf receiver.

my code for transmitter:

Code:
void main()
{
  TRISB.F0 = 0xFF;
  PORTB.F0 = 0;
  UART1_Init(2400); // Initialize UART module at 9600bps
  Delay_ms(100); // Wait for UART module to stabilize
  while (1)
  { // Endless loop
    UART1_Write(PORTB); // and send data via UART
    Delay_ms(500);
  }
}

code for receiver:

Code:
void main()
{
  TRISB = 0;
  PORTB = 0;
  UART1_Init(2400); // Initialize UART module at 9600bps
  Delay_ms(100); // Wait for UART module to stabilize
  while (1)
  { // Endless loop
    if (UART1_Data_Ready())
    { // If data is received,
      PORTB = UART1_Read(); // read the received data,
    }
   }
}

I have those two circuits connected in reality, but this code didn't work. It should transmit signal when I press button which connected to portB pin 0 and LED on receiver portB pin 0 should be on.

Can anyone help me with code? ;/
 

How can I verify this?

Besides, I have connected microcontroller to re transmitter, not to other mc ;)
 


maybe I should encode manchester code when I receive a signal?

- - - Updated - - -

can anyone rewrite my code with manchester encoding/decoding http://www.mikroe.com/esupport/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=138 ? I need to see how it looks, because Im having hard time to figure it out by myself... :(
 

can anyone help me? :(
 

can anyone help me? :(

Encoder will be built into the Transmitter and Decoder will be built into the Receiver. So, you don't have to worry about encoding/decoding the data. Your RF module works at 4800 bps. What is the baudrate you have selected for your MCUs (both transmitter MCU and Receiver MCU)?
 

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