circuitpython/ports/samd/mphalport.h

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2019-2021 Damien P. George
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#ifndef MICROPY_INCLUDED_SAMD_MPHALPORT_H
#define MICROPY_INCLUDED_SAMD_MPHALPORT_H

#include "py/mpconfig.h"
#include "py/ringbuf.h"

// ASF4
#include "hal_gpio.h"

extern int mp_interrupt_char;
extern ringbuf_t stdin_ringbuf;
extern volatile uint32_t systick_ms;

void mp_hal_set_interrupt_char(int c);

static inline mp_uint_t mp_hal_ticks_ms(void) {
    return systick_ms;
}
static inline mp_uint_t mp_hal_ticks_us(void) {
    return systick_ms * 1000;
}
static inline mp_uint_t mp_hal_ticks_cpu(void) {
    return 0;
}

// C-level pin HAL

#include "py/obj.h"

#define MP_HAL_PIN_FMT "%u"
#define mp_hal_pin_obj_t uint

extern uint32_t machine_pin_open_drain_mask;

mp_hal_pin_obj_t mp_hal_get_pin_obj(mp_obj_t pin_in);

static inline unsigned int mp_hal_pin_name(mp_hal_pin_obj_t pin) {
    return pin;
}

static inline void mp_hal_pin_input(mp_hal_pin_obj_t pin) {
    gpio_set_pin_direction(pin, GPIO_DIRECTION_IN);
    machine_pin_open_drain_mask &= ~(1 << pin);
}

static inline void mp_hal_pin_output(mp_hal_pin_obj_t pin) {
    gpio_set_pin_direction(pin, GPIO_DIRECTION_OUT);
    machine_pin_open_drain_mask &= ~(1 << pin);
}

static inline void mp_hal_pin_open_drain(mp_hal_pin_obj_t pin) {
    gpio_set_pin_direction(pin, GPIO_DIRECTION_IN);
    gpio_set_pin_level(pin, 0);
    machine_pin_open_drain_mask |= 1 << pin;
}

static inline int mp_hal_pin_read(mp_hal_pin_obj_t pin) {
    return gpio_get_pin_level(pin);
}

static inline void mp_hal_pin_write(mp_hal_pin_obj_t pin, int v) {
    gpio_set_pin_level(pin, v);
}

/*
static inline void mp_hal_pin_od_low(mp_hal_pin_obj_t pin) {
    gpio_set_pin_direction(pin, GPIO_DIRECTION_OUT);
}

static inline void mp_hal_pin_od_high(mp_hal_pin_obj_t pin) {
    gpio_set_pin_direction(pin, GPIO_DIRECTION_IN);
}
*/

#endif // MICROPY_INCLUDED_SAMD_MPHALPORT_H