MSP 430 need urgent help in tx/tx simple program

Code C - [expand]
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#include "mrfi.h"
int main(void)
{
BSP_Init();// disables the watchdog, initializes the MCLK at 8MHz, sets LED ports as outputs and the button port as input.
 
P1REN |= 0x04;// enables the internal resistor of thebutton
 
P1IE |= 0x04;// enables interrupts
 
 
MRFI_Init(); // initializes the 6 wires between the MSP430 and the CC2500,powers-up the CC2500 and configures the CC2500 47 registers and turns on interrupts from the CC2500;
 
MRFI_WakeUp();// wakes up the radio, i.e. it turns on the 26MHz crystal attach to it without entering Rx or Tx mode;
 
MRFI_RxOn() ;// switches the radio to Rx mode; from this line on, it can receive packets,in which case the interrupt function 
 
__bis_SR_register(GIE+LPM4_bits);// enables interrupts globally and enters LPM4
}
 
void MRFI_RxCompleteISR()
{
P1OUT ^= 0x02;// toggle both leds
}
 
 
#pragma vector=PORT1_VECTOR // declare that this function should be called when an interrupt of type PORT1_VECTOR happens
__interrupt void Port_1 (void)
{
[B]P1IFG &= ~0x04; //resets the interrupt flag
mrfiPacket_t packet;
packet.frame[0]=8+20;
MRFI_Transmit(&packet, MRFI_TX_TYPE_FORCED);
P1OUT ^= 0x01;[/B]

Code C - [expand]
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#include "mrfi.h"
int main(void)
{
  BSP_Init();
  P1REN |= 0x04;
  P1IE |= 0x04;
  MRFI_Init();
  MRFI_WakeUp();
  MRFI_RxOn();
  __bis_SR_register(GIE+LPM4_bits);
}
void MRFI_RxCompleteISR()
{
  P1OUT ^= 0x02;
}
#pragma vector=PORT1_VECTOR
__interrupt void Port_1 (void)
{
  P1IFG &= ~0x04;
  mrfiPacket_t packet;
  packet.frame[0]=8+20;
  MRFI_Transmit(&packet, MRFI_TX_TYPE_FORCED);
  P1OUT ^= 0x01;
}