Hi to all

I am fighting now with PortOut and PortInOut libraries ...

I have simple prog.

#include "mbed.h"

#define LED_MASK 0x00000ff0

PortOut IoPort(Port0, LED_MASK);

DigitalOut myled(LED1);


int main() {
    while(1) {              
        myled = !myled;
        wait(0.5);
        IoPort = 0xff;
        wait(0.5);
        IoPort = 0xaa;
        wait(0.5);
        IoPort = 0x55;
    }
}

where is problem ?

Hi Tomislav,

You still need to write the bits in the appropriate positions. The mask just defines which parts are updated. So, in your example, you would write as:

#include "mbed.h"

#define LED_MASK 0x00000ff0

PortOut IoPort(Port0, LED_MASK);

DigitalOut myled(LED1);


int main() {
    while(1) {              
        myled = !myled;
        wait(0.5);
        IoPort = 0xff0;
        wait(0.5);
        IoPort = 0xaa0;
        wait(0.5);
        IoPort = 0x550;
    }
}

Simon

Thanks Simon for great support  32bit controllers ale little tricky for me now as a total newbie

this is also reason why i cant get lcd working > from other thread :)

if you come to Prague I have beer or two for you ;)

Another hint needed ...

how to change pullup/pulldown settings in PortInOut library ?

When I set the mask LEDs starts to glow a little ( deffault pullup? )

if I use this :

#include "mbed.h"
#define LED_MASK 0x00000ff0

PortInOut IoPort(Port0, LED_MASK);
IoPort.mode(PullDown);

Hi Tomislav,

The problem here is that mode() is a method, so you have to call it like any other function (from within a code section). So, for example:

#include "mbed.h"
#define LED_MASK 0x00000ff0

PortInOut IoPort(Port0, LED_MASK);

int main() {
    IoPort.mode(PullDown);
}

Simon

works great ... thanks again :)

great service :)

Hi,

I still cannot make the portout work could you please look at the following and let me know what I am doing wrong

1. define maskout 0x01878ff3 PortOut data(Port0, maskout);

how will I write any data for example 0xab4c to the port. Any help would be greatly appreciated. Many Thanks Abid