2-wire communication between two nrf24le1 coding problem.

i want to use 2-wire to do the communication of two nrf24le1. one is the master, another is slave. I don't know how to set up the master and slave. Is it the code shown below correct? P0.1 and P0.2 connect with two LED.

master

void I2C_ISP(void)	interrupt INTERRUPT_SERIAL
{
	P02 = !P02;
}

void main(void)
{
        uint8_t a[1];
	hal_w2_configure_master(HAL_W2_400KHZ);
	IEN1 |= 0x04;
	INTEXP |= 0x04;
	delay_ms(1);
	EA = 1U;
	P0DIR = 0x00;
        a[0] = 0xff;
	while(1)
	{	
		hal_w2_write(0x20,a,1);
		delay_ms(1000);
		a[0] = !a[0];
		P01 = !P01;
  	}
}

slave

void I2C_ISP(void)	interrupt INTERRUPT_SERIAL
{
	P02 = !P02;
	i2c_recive = HAL_W2_READ();
}

void main(void)
{
	hal_w2_enable(true);
	hal_w2_set_clk_freq(HAL_W2_400KHZ);
	hal_w2_set_op_mode(HAL_W2_SLAVE);
	hal_w2_all_irq_enable(true);
	hal_w2_set_slave_address(0x20);
	hal_w2_alter_clock(true);
	IEN1 |= 0x04;
	INTEXP |= 0x04;
	delay_ms(1);

	EA = 1U;
	P0DIR = 0x00;
	while(1)
	{	
		delay_ms(1000);
		P01 = !P01;
  	}
}
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