embedded rookie

RF.c

#include "globalvar.h" // button2_time_cnt is defined in the header file
#include "function.h"

#define P3_5 1 // if P3_5 is 1, it will be the transmitter
#define period 1000

unsigned char Packet_Tx[8]; // if initialize, this array will be a "constant", which can't be modified in code.
void WriteFIFO(void);

void WriteFIFO(void)
{
    unsigned char i;
    for (i = 0; i < 8; i++)
        RFLIB_WriteReg(TXFIFO_REG + i, Packet_Tx[i]);
}

void main(void)
{
    //hardware initialization
    //timer0, rf, other settings are done here
    if (P3_5)
    {
        while (1)
        {
            if (button2_time_cnt >= period)
            {
                //something here to store the state about the num of light are on
                for (i = 0; i < 8; i++)
                {
                    Packet_Tx[i] = 0x11 * (i + 1); // this can be modify, like specify the first two bytes to be the info of ID...
                                                   // and third byte will be the state of light...
                }
                WriteFIFO();             // load data in specific register and wait to transmit
                RFLIB_StrobeCmd(CMD_TX); //entry tx & transmit
                Delay10us(1);
                while ((RFLIB_ReadReg(MODEC1_REG) & 0x80) == 0x80); //wait transmit completed

                TimeoutFlag = 0;
                RFLIB_StrobeCmd(CMD_RX); //entry rx
                Delay10us(1);
                while ((RFLIB_ReadReg(MODEC1_REG) & 0x80) == 0x80 && TimeoutFlag == 0); //wait receive completed

                if (TimeoutFlag)
                {
                    RFLIB_StrobeCmd(CMD_STBY); //exit rx mode
                    continue;
                }

                RxPacket();
                Delay10us(1);
            }
        }
    }
    else
    {
        //the part of receiver
    }
}