Esempi in C++ (Cpp) per port_get_group_from_gpio_pin

Esempio n. 1

File: port_api.c Progetto: Jinjeleta/gcc4mbed

void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
{
    MBED_ASSERT(obj);
    struct port_config pin_conf;
    int i, j;
    int start;

    port_get_config_defaults(&pin_conf);
    switch (dir) {
        case PIN_INPUT :
            pin_conf.direction  = PORT_PIN_DIR_INPUT;
            break;
        case PIN_OUTPUT:
            pin_conf.direction  = PORT_PIN_DIR_OUTPUT;
            break;
        case PIN_INPUT_OUTPUT:
            pin_conf.direction  = PORT_PIN_DIR_OUTPUT_WTH_READBACK;
            break;
        default:
            return;
    }

    PortGroup *const port_base = (PortGroup*)port_get_group_from_gpio_pin(port * 32);  // 32 pins in port // function reused to get the port base
    if(port_base == NULL) return; /* returns NULL if invalid*/
    switch (port) {
        case PortA:
            obj->mask = (uint32_t)mask & PORTA_MASK;
            break;
        case PortB:
            obj->mask = (uint32_t)mask & PORTB_MASK;
            break;
#if defined(TARGET_SAMR21G18A)
        case PortC:
            obj->mask = (uint32_t)mask & PORTC_MASK;
            break;
#endif
        default:
            return;
    }
    start = start_pin(port);
    if(start == NC)
        return;
    obj->port = port;
    obj->direction = dir;
    obj->powersave = pin_conf.powersave;
    obj->mode = PORT_PIN_PULL_UP;

    for (i = start, j = 0; j < 32; i++, j++) {
        if (obj->mask & (1<<j)) {
            port_pin_set_config((PinName)i, &pin_conf);
        }
    }
    obj->OUTCLR = &port_base->OUTCLR.reg;
    obj->OUTSET = &port_base->OUTSET.reg;
    obj->IN = &port_base->IN.reg;
    obj->OUT = &port_base->OUT.reg;
}

Esempio n. 2

File: gpio_api.c Progetto: toyowata/mbed

void gpio_init(gpio_t *obj, PinName pin)
{
    struct port_config pin_conf;
    PortGroup *const port_base = (PortGroup*)port_get_group_from_gpio_pin(pin);

    obj->pin = pin;
    if (pin == (PinName)NC)
        return;

    obj->mask = gpio_set(pin);
    port_get_config_defaults(&pin_conf);
    obj->powersave = pin_conf.powersave;
    obj->direction = PORT_PIN_DIR_INPUT;
    obj->mode = PORT_PIN_PULL_UP;
    port_pin_set_config(pin, &pin_conf);

    obj->OUTCLR = &port_base->OUTCLR.reg;
    obj->OUTSET = &port_base->OUTSET.reg;
    obj->IN = &port_base->IN.reg;
    obj->OUT = &port_base->OUT.reg;
}

Esempio n. 3

File: gpio_irq_api.c Progetto: masaohamanaka/mbed

void gpio_irq(void)
{
    uint32_t current_channel;
    uint32_t mask;
    gpio_irq_event event;
    PortGroup *port_base;

    for (current_channel = 0; current_channel < EIC_NUMBER_OF_INTERRUPTS ; current_channel++) {
        if (extint_chan_is_detected(current_channel)) {
            extint_chan_clear_detected(current_channel);
            port_base = (PortGroup*)port_get_group_from_gpio_pin(ext_int_pins[current_channel]);
            mask = gpio_set(ext_int_pins[current_channel]);
            if ((port_base->IN.reg & mask) != 0) {
                event = IRQ_RISE;
            } else {
                event = IRQ_FALL;
            }
            if(irq_handler) {
                irq_handler(channel_ids[current_channel], event);
            }
        }
    }
}