File content as of revision 6:db985df4354b:

#include "MRF24J40.h"
#include "sender.h"
#include "analog_joystick.h"

#include <string>

// RF tranceiver to link with handheld.
MRF24J40 mrf(p11, p12, p13, p14, p21);

// LEDs you can treat these as variables (led2 = 1 will turn led2 on!)
DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);

// Timer
Timer timer;

// Serial port for showing RX data.
Serial pc(USBTX, USBRX);

// Used for sending and receiving
char txBuffer[128];
char rxBuffer[128];
int rxLen;
LocalFileSystem local("local");

//***************** send and receive methods *****************//
/*
void wait_for_ping(uint8_t length) {
    int receive = 0;
    uint8_t *rssi = 0;
    
    while (receive == 0) {
        receive = rf_receive_rssi(rxBuffer, rssi, length);
    }
}
*/


//***************** main loop *****************//

int main (void)
{
    uint8_t channel = 3;
    uint8_t iterations = 0;
    uint8_t successCounter = 0;
    uint8_t rssiBuffer[iterations];
    
    char *byteTransmit = "!"; // TODO: change this! 

    //Set the Channel. 0 is default, 15 is max
    mrf.SetChannel(channel);

    //Start the timer
    timer.start();
    
    pc.printf("START\r\n");
    
    FILE *fp = fopen("/local/out.txt\r\n", "w");
    if (fp == NULL) {
        pc.printf("error opening file\r\n");
        return 0;
    }
    
    int count = 25;
    while (count > 0) {
        count--;

        pc.printf("yaw: %f\r\n", read_yaw());
        pc.printf("pitch: %f\r\n", read_pitch());
        pc.printf("roll: %f\r\n", read_roll());
        pc.printf("thrust: %f\r\n", read_thrust());
        
        wait(0.2);
    }
    
    
    // send_three_way_handshake();
    
    for (int i = 0; i < iterations; i++) {
        strcpy(txBuffer, byteTransmit);
        rf_send(mrf, txBuffer, strlen(txBuffer) + 1);
        pc.printf("RC Sent: %s \r\n", txBuffer);
    
        wait(0.2);
    }
    
    // output data
    fprintf(fp, "# received\t= %d\n", successCounter);
    fprintf(fp, "# sent\t= %d\n", iterations);
    fprintf(fp, "success rate\t= %f\n", (double) successCounter / (double) iterations);
    double sum = 0;
    for (int i = 0; i < successCounter; i++) {
        sum += rssiBuffer[i];
    }
    fprintf(fp, "average rssi\t= %f\n", sum / (double) successCounter);
    fclose(fp);
    
    pc.printf("END\r\n");
}