Hardware Reqiurements

• Two development boards
• Two antennas
• USB-to-serial converter
• Debugger
• Jumper wires
• USB cables
• Power cables

Code Implementation (rf_config.c)

#include "hal_defs.h"
#include "hal_cc8051.h"
#include "hal_int.h"
#include "hal_mcu.h"
#include "hal_board.h"
#include "hal_led.h"
#include "hal_rf.h"
#include "basic_rf.h"
#include "hal_uart.h"
#include <stdio.h>
#include <string.h>
#include <stdarg.h>

// Network configuration
#define RF_FREQUENCY        20       // Channel 11-26
#define NETWORK_ID          0x1A2C   // PAN identifier

#define DEVICE_A 1

#if DEVICE_A
    #define LOCAL_ADDRESS     0x105C
    #define DEST_ADDRESS      0x2F1B
#else
    #define LOCAL_ADDRESS     0x2F1B
    #define DEST_ADDRESS      0x105C
#endif

// GPIO definitions
#define LED1 P1_3
#define LED2 P1_1
#define LED3 P1_0
#define LED4 P1_4

static basicRfCfg_t rfConfig;

uint8_t receivedData;
uint8_t transmitData;
uint8_t dataReadyFlag;

void initializeRfModule() {
    rfConfig.panId = NETWORK_ID;
    rfConfig.channel = RF_FREQUENCY;
    rfConfig.myAddr = LOCAL_ADDRESS;
    rfConfig.ackRequest = TRUE;
    
    while(basicRfInit(&rfConfig) == FAILED);
    basicRfReceiveOn();
}

void configureGpio() {
    P1DIR |= 0x1B;
    LED1 = 0;
    LED2 = 0;
    LED3 = 0;
    LED4 = 0;
}

void sendUartByte(uint8_t data) {
    U0DBUF = data;
    while(UTX0IF == 0);
    UTX0IF = 0;
}

void sendUartString(uint8_t *str) {
    while(*str != '\0') {
        sendUartByte(*str++);
    }
}

#pragma vector = URX0_VECTOR
__interrupt void uartRxIsr() {
    transmitData = U0DBUF;
    dataReadyFlag = 1;
}

void main() {
    halBoardInit();
    initializeRfModule();
    configureGpio();
    
    #if DEVICE_A
        halUartInit(9600);
        sendUartString("System Ready\n");
    #endif
    
    while(1) {
        #if DEVICE_A
            if(dataReadyFlag) {
                dataReadyFlag = 0;
                basicRfSendPacket(DEST_ADDRESS, &transmitData, 1);
            }
        #endif
        
        if(basicRfPacketIsReady()) {
            basicRfReceive(&receivedData, 1, NULL);
            
            switch(receivedData) {
                case 0xD3: LED1 = ~LED1; break;
                case 0xD4: LED2 = ~LED2; break;
                case 0xD5: LED3 = ~LED3; break;
                case 0xD6: LED4 = ~LED4; break;
            }
        }
    }
}

Setup Instructions

1. For Device A:

   • Connect debugger
   • Flash firmware with DEVICE_A defined as 1

2. For Device B:

   • Connect debugger
   • Flash firmware with DEVICE_A commented out

3. Configure serial terminal:

   • Select correct COM port
   • Set baud rate to 9600
   • Send commands (D3, D4, D5, D6) to control LEDs individually

Notes

• Current implementation supports single-command LED control
• Commands are case-sensitive
• Ensure proper antenna placement for reliable RF communication