File content as of revision 0:e674a8b2b330:

#include "mbed.h"
#include "m3pi_ng.h"


m3pi m3pi;

DigitalOut mbed_led[] = {(LED1), (LED2),(LED3), (LED4)};
DigitalOut m3pi_led[] = {(p13), (p14), (p15), (p16), (p17), (p18), (p19), (p20)};
DigitalIn m3pi_pb(p21);
Timer t1;
Serial btbee(p28, p27); // tx rx
DigitalOut btbee_reset(p26);  // 0 resets the device

int main (){
    // initialization stuff ////////////////////////////////////////////////////////////////////////////////////////////////////
    m3pi.locate(0,1);
    btbee_reset=1;  // else it keeps resetting
    for (int i = 0; i <4; i++) {
        mbed_led[i] = 0;
    }
    for (int i = 0; i <8; i++) {
        m3pi_led[i]=0;
    }
    m3pi_pb.mode(PullUp); // expected would be 1 when pb is pressed, 0 when not, opposite is the case
    btbee.baud(38400);  // this is BtBee default for AT commands
    //btbee.baud(9600);  // this is BtBee default for regular commands
    //btbee.format();  // the default should be fine
    // end initialization stuff ////////////////////////////////////////////////////////////////////////////////////////////////    

    m3pi.printf("ATSWITCH");
    m3pi.locate(0,0);
    m3pi.printf("RIGHT???");

    wait(0.1);
    
    m3pi_led[0]=1;

    //btbee.printf("at\r\n"); // test command, returns "OK\r\n"
    //btbee.printf("at+uart=9600,0,0\r\n"); //default values, returns "OK\r\n"
    //btbee.printf("at+uart=115200,0,0\r\n"); //changing the baud rate, returns "OK\r\n" 
    btbee.printf("at+uart?\r\n"); //asking for the set parameters, replies "+UART:baud,stop,parity\r\n"

    m3pi_led[1]=1;

    char l1[30]; //array for the reply
 
    while (!btbee.readable()){  //wait for it
    mbed_led[0]=!mbed_led[0];
    wait(0.1);
    }
    
    /*
    // abandoned. scanf is notorious and using getchar is recommended. i love c. 
    int num;
    num = btbee.scanf("%s/n",l1);
    m3pi.printf("%i",num);
    */
    
    int pos = 0;
    while (btbee.readable()){
    l1[pos]=btbee.getc();
    pos++;
    }
    m3pi_led[2]=1;
    
    m3pi.cls();
    m3pi.locate(0,0);
    if (pos<9){
    m3pi.print(l1,pos);
    }
    else{
    m3pi.print(l1,8);
    m3pi.locate(0,1);
    m3pi.print(l1+8,pos-8);
    }
    m3pi_led[3]=1;
}