Hi, I dont know how managed interrupts in mbed, I try to connect with a gps, and modem gprs and a module of mifare, but I dont want to wait in a while waiting for a character, so I try to manage with the interrupt like other microcontroller I use, like freescale and lpc1114 with lpcxpresso, this is my code

#include "mbed.h"
#include "TextLCD.h"
#include "gps.h"

TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD20x4); // rs, e, d4-d7
DigitalOut led1(LED1);
DigitalOut led2(LED2);
Serial gps(NC,p14);
Serial pc(USBTX,USBRX);
InterruptIn down(p21);
InterruptIn right(p22);
InterruptIn enter(p23);
InterruptIn left(p24);
InterruptIn up(p25);
GPS my_gps;



char buffer_gps[100];
int pointer_gps=0;
bool flag_gps=0;

/////////////////////////////////////////////////////////
void isr_gps(void){
led1=!led1;
if(gps.readable()){
buffer_gps[pointer_gps++]=gps.getc();
if(buffer_gps[pointer_gps-1]==0x0d){
led2=!led2;
flag_gps=1;
}
}

}

void clean_buffer_gps(void){
int i;
for(i=0;i<100;i++){
buffer_gps[i]=0x00;
pointer_gps=0;
}
}
/////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////
void menu_lcd(void){
lcd.cls();
lcd.locate(0,1);
lcd.putc('>');
lcd.locate(1,0);
lcd.printf("MENU DE USUARIO");
lcd.locate(1,1);
lcd.printf("Config. Tiempo");
lcd.locate(1,2);
lcd.printf("Config. Algo");
lcd.locate(1,3);
lcd.printf("Config. algo2");
}
///////////////////////////////////////////////////////



int main() {

gps.baud(4800);
gps.attach(&isr_gps,Serial::RxIrq);
my_gps.InitGPS();


menu_lcd();
while(1) {
if(flag_gps){//if received the final command 0x0d
flag_gps=0;

if(my_gps.ProcessDataGPS(buffer_gps)==gpgga_ok){
pc.printf("hora %s \n\r",my_gps.string_time);
clean_buffer_gps();
}else{
pc.printf("%s",buffer_gps);
clean_buffer_gps();
}

}

}
}

when I try to printf, all program crash, exist some way to disable the interrupt rx? best regards

printf() inside interrupts is problematic. See MODGPS and MODSERIAL, they may be of use to you.

thanks Andy, your library is excellent!!!! very nice work, I going to read your library, and how manage the interrupts, to try to do the same with the mifare module and the modem gsm, Thanks again!!