File content as of revision 4:d6e5433bcbf6:

#include "mbed.h"
#include "nRF24L01P.h"
#define TRANSFER_SIZE   11
#define JY901transfersize 44

Serial pc(PA_9,PA_10, 9600); // tx, rx
//Serial JY901(PB_10,PB_11,9600);
//                 mosi, miso, sck, csn, ce, irq
nRF24L01P my_nrf24l01p(PB_15, PB_14, PB_13, PB_6, PB_5, PB_7);

int main() { 
    pc.printf("init\r\n");
    char JY901data[JY901transfersize];
    char txData[TRANSFER_SIZE], rxData[TRANSFER_SIZE];
    int JY901cnt = 0;
    int txDataCnt = 0;
    int rxDataCnt = 0;
    my_nrf24l01p.powerUp();
    
    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() );

    my_nrf24l01p.setTransferSize( TRANSFER_SIZE );
    my_nrf24l01p.setReceiveMode();
    my_nrf24l01p.enable();
    while (1) {
        /*while(JY901cnt < JY901transfersize)
            JY901data[JY901cnt++] = JY901.getc();
        my_nrf24l01p.write(NRF24L01P_PIPE_P0,JY901data,JY901cnt);
        my_nrf24l01p.setReceiveMode();
        JY901cnt = 0;;*/
        
        

        if ( my_nrf24l01p.readable() ) {
            if ( pc.readable() ) {
            txData[txDataCnt++] = pc.getc();
            if ( txDataCnt >= sizeof( txData ) ) {
                my_nrf24l01p.write( NRF24L01P_PIPE_P0, txData, txDataCnt );
                my_nrf24l01p.setReceiveMode();
                txDataCnt = 0;
            }
        }
            rxDataCnt = my_nrf24l01p.read( NRF24L01P_PIPE_P0, rxData, sizeof( rxData ) );
            for ( int i = 0; rxDataCnt > 0; rxDataCnt--, i++ ) {
                pc.putc( rxData[i] );
            }
        }
    }
}