File content as of revision 0:95d17607a698:

#include "mbed.h"
#include "param.h"
#include "pin_config.h"

//control stearing
PwmOut heading_front(PIN_FRONT_SERVO);
PwmOut heading_rear(PIN_REAR_SERVO);
//control speed
PwmOut drive_motor(PIN_RC_SPEED);

//led debugging
DigitalOut myled(LED1);

//set foreground
Ticker Update_command;
Ticker Samping;

void Init_servo()
{
    heading_front.period_ms(20);
    heading_rear.period_ms(20);
    drive_motor.period_ms(20);
}
void Init_communication()
{
    iSerial pan_a(TX_PAN_A, RX_PAN_A); // tx, rx
    iSerial pan_b(TX_PAN_B, RX_PAN_B); // tx, rx

    pan_a.baud(115200);
    pan_b.baud(115200);

}

void Init_foreground()
{
    Update_command.attach(&setControl,TIMER_UPDATE);
    Samping.attach(&getSensor,TIMER_SAMPING);
}

void setControl()
{

}

void getSensor()
{
    
}

int main()
{
    Init_communication();
    Init_servo();

}