File content as of revision 3:2544ec35c76f:

#include "mbed.h"
#include "nRF24L01P.h"
#include "LCD_DISCO_L476VG.h"

Serial pc(USBTX, USBRX); // tx, rx

nRF24L01P my_nrf24l01p(PE_15, PE_14, PE_13, PE_12, PE_10, PE_11);    // mosi, miso, sck, csn, ce, irq

DigitalOut myled1(LED1);
DigitalOut myled2(LED2);
LCD_DISCO_L476VG lcd;

int main() {

// The nRF24L01+ supports transfers from 1 to 32 bytes, but Sparkfun's
//  "Nordic Serial Interface Board" (http://www.sparkfun.com/products/9019)
//  only handles 4 byte transfers in the ATMega code.
#define TRANSFER_SIZE   4

    char txData[TRANSFER_SIZE], rxData[TRANSFER_SIZE];
    int txDataCnt = 0;
    int rxDataCnt = 0;
    uint32_t temp = 0;
    uint8_t stemp[7] = {0};
    //uint8_t title[] = "      DISCOVERY STM32L476";
    my_nrf24l01p.powerUp();
    

    // Display the (default) setup of the nRF24L01+ chip
    pc.printf( "nRF24L01+ Frequency    : %d MHz\r\n",  my_nrf24l01p.getRfFrequency() );
    pc.printf( "nRF24L01+ Output power : %d dBm\r\n",  my_nrf24l01p.getRfOutputPower() );
    pc.printf( "nRF24L01+ Data Rate    : %d kbps\r\n", my_nrf24l01p.getAirDataRate() );
    pc.printf( "nRF24L01+ TX Address   : 0x%010llX\r\n", my_nrf24l01p.getTxAddress() );
    pc.printf( "nRF24L01+ RX Address   : 0x%010llX\r\n", my_nrf24l01p.getRxAddress() );

    pc.printf( "Type keys to test transfers:\r\n  (transfers are grouped into %d characters)\r\n", TRANSFER_SIZE );

    my_nrf24l01p.setTransferSize( TRANSFER_SIZE );

    my_nrf24l01p.setReceiveMode();
    my_nrf24l01p.enable();
    
printf("Hello\n");
    //led_green = 1;
    lcd.Clear();
    lcd.DisplayString((uint8_t *)"HELLO");
    wait(1);
    
    while (1) {

        // If we've received anything over the host serial link...
        if ( pc.readable() ) {

            // ...add it to the transmit buffer
            txData[txDataCnt++] = pc.getc();}

            // If the transmit buffer is full
            if ( txDataCnt >= sizeof( txData ) ) {

                // Send the transmitbuffer via the nRF24L01+
                my_nrf24l01p.write( NRF24L01P_PIPE_P0, txData, txDataCnt );

                txDataCnt = 0;
            

            // Toggle LED1 (to help debug Host -> nRF24L01+ communication)
            myled1 = !myled1;
        }

        // If we've received anything in the nRF24L01+...
        if ( my_nrf24l01p.readable() ) {

            // ...read the data into the receive buffer
            rxDataCnt = my_nrf24l01p.read( NRF24L01P_PIPE_P0, rxData, sizeof( rxData ) );

            // Display the receive buffer contents via the host serial link
            for ( int i = 0; rxDataCnt > 0; rxDataCnt--, i++ ) {

                pc.putc( rxData[i] );
            }
}
    
   
    
   // printf("Scroll sequence\n");
    //led_green = 0;
    //lcd.Clear();
    //lcd.ScrollSentence(title, 2, 200);
    //lcd.Clear();
  
  //  while(1) {
    //    printf("BAR = %d\n", temp);
      //  sprintf((char *)stemp, "BAR %d", temp);
        //lcd.DisplayString(stemp);
        //lcd.BarLevelConfig((uint8_t)temp);
        //temp++;
        //if (temp > 4) temp = 0;
        //led_green = !led_green;
       // wait(1);
    
            // Toggle LED2 (to help debug nRF24L01+ -> Host communication)
            myled2 = !myled2;
        }
    }