NRF24LE1 (please help with power save coding)

Question

Hello 
 I am quite a beginner and have been trying to get it work for 2 weeks now. 
 I would like to merge these 2 example codes from nordic: 
 
 Shockburst TX example 
 Registry retention timers on 
 
 I got reg retention to work, but the transmissioon does not go through.
Can anyone help me with the working code where these 2 codes are combined... 
 I paste both of them here below: 
 1) Shock burst TX example: 
 #include "nrf24le1.h"
#include "hal_clk.h"
#include "hal_rtc.h" 
 static bool volatile radio_busy; 
 void main(void)
{
uint8_t payload[3]; 
 while(hal_clk_get_16m_source() != HAL_CLK_XOSC16M)
{ 
 } 
 RFCKEN = 1U;
RF = 1U;
EA = 1U;
hal_nrf_set_power_mode(HAL_NRF_PWR_UP); 
 for(;;)
{
payload[0] = ~P0;
hal_nrf_write_tx_payload(payload, 3U);
CE_PULSE();
radio_busy = true;
while (radio_busy)
{
}
}
} 
 NRF_ISR()
{
uint8_t irq_flags; 
 irq_flags = hal_nrf_get_clear_irq_flags(); 
 switch(irq_flags)
{
case (1 << (uint8_t)HAL_NRF_TX_DS):
radio_busy = false;
break;
case (1 << (uint8_t)HAL_NRF_MAX_RT):
hal_nrf_flush_tx();
radio_busy = false;
break;
default:
break;
}
} 
 2) Registry retention timers on 
 void mcu_init(void)
{
P0CON = 0x70; // Disable digital input buffer, pin used for 32kHz.
P0CON = 0x71; // Disable digital input buffer, pin used for 32kHz. 
 P0DIR = 0x03; // Two pins used for 32 kHz XO.
P1DIR = 0x00;
P2DIR = 0x00;
P3DIR = 0x00; 
 P0 = 0x00;
P1 = 0x00;
P2 = 0x00;
P3 = 0x00;
} 
 void wakeup_tick() interrupt INTERRUPT_TICK
{
P02 = !P02;
} 
 void main(void)
{
mcu_init(); 
 hal_rtc_start(false);
hal_clklf_set_source(HAL_CLKLF_XOSC32K);
hal_rtc_set_compare_mode(HAL_RTC_COMPARE_MODE_0);
hal_rtc_set_compare_value(0x7FFF);
hal_rtc_start(true); 
 // Wait for the 32kHz to startup (change phase)
while((CLKLFCTRL&0x80)==0x80);
while((CLKLFCTRL&0x80)!=0x80); 
 IEN1 = 0x20;
EA = 1; 
 while(1)
{
// Register retention mode
PWRDWN = 0x04;
// Standby mode (wait for interrupt)
PWRDWN = 0x07;
// Clear PWRDWN
PWRDWN = 0x00;
// Continue to run code
P03 = !P03;
};
}