130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020-2021 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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#ifndef MICROPY_INCLUDED_RP2_MPHALPORT_H
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#define MICROPY_INCLUDED_RP2_MPHALPORT_H
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#include "py/mpconfig.h"
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#include "py/ringbuf.h"
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#include "pico/time.h"
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#include "hardware/clocks.h"
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#include "hardware/structs/systick.h"
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#define SYSTICK_MAX (0xffffff)
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extern int mp_interrupt_char;
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extern ringbuf_t stdin_ringbuf;
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void mp_hal_set_interrupt_char(int c);
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static inline void mp_hal_delay_us(mp_uint_t us) {
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sleep_us(us);
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}
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static inline void mp_hal_delay_us_fast(mp_uint_t us) {
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busy_wait_us(us);
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}
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#define mp_hal_quiet_timing_enter() MICROPY_BEGIN_ATOMIC_SECTION()
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#define mp_hal_quiet_timing_exit(irq_state) MICROPY_END_ATOMIC_SECTION(irq_state)
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static inline mp_uint_t mp_hal_ticks_us(void) {
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return time_us_32();
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}
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static inline mp_uint_t mp_hal_ticks_ms(void) {
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return to_ms_since_boot(get_absolute_time());
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}
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static inline mp_uint_t mp_hal_ticks_cpu(void) {
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// ticks_cpu() is defined as using the highest-resolution timing source
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// in the system. This is usually a CPU clock, but doesn't have to be.
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return time_us_32();
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}
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static inline mp_uint_t mp_hal_get_cpu_freq(void) {
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return clock_get_hz(clk_sys);
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}
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// C-level pin HAL
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#include "py/obj.h"
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#include "hardware/gpio.h"
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#define MP_HAL_PIN_FMT "%u"
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#define mp_hal_pin_obj_t uint
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extern uint32_t machine_pin_open_drain_mask;
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mp_hal_pin_obj_t mp_hal_get_pin_obj(mp_obj_t pin_in);
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static inline unsigned int mp_hal_pin_name(mp_hal_pin_obj_t pin) {
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return pin;
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}
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static inline void mp_hal_pin_input(mp_hal_pin_obj_t pin) {
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gpio_set_function(pin, GPIO_FUNC_SIO);
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gpio_set_dir(pin, GPIO_IN);
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machine_pin_open_drain_mask &= ~(1 << pin);
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}
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static inline void mp_hal_pin_output(mp_hal_pin_obj_t pin) {
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gpio_set_function(pin, GPIO_FUNC_SIO);
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gpio_set_dir(pin, GPIO_OUT);
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machine_pin_open_drain_mask &= ~(1 << pin);
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}
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static inline void mp_hal_pin_open_drain(mp_hal_pin_obj_t pin) {
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gpio_set_function(pin, GPIO_FUNC_SIO);
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gpio_set_dir(pin, GPIO_IN);
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gpio_put(pin, 0);
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machine_pin_open_drain_mask |= 1 << pin;
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}
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static inline int mp_hal_pin_read(mp_hal_pin_obj_t pin) {
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return gpio_get(pin);
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}
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static inline void mp_hal_pin_write(mp_hal_pin_obj_t pin, int v) {
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gpio_put(pin, v);
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}
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static inline void mp_hal_pin_od_low(mp_hal_pin_obj_t pin) {
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gpio_set_dir(pin, GPIO_OUT);
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}
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static inline void mp_hal_pin_od_high(mp_hal_pin_obj_t pin) {
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gpio_set_dir(pin, GPIO_IN);
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}
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static inline void mp_hal_pin_low(mp_hal_pin_obj_t pin) {
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gpio_clr_mask(1 << pin);
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}
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static inline void mp_hal_pin_high(mp_hal_pin_obj_t pin) {
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gpio_set_mask(1 << pin);
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}
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#endif // MICROPY_INCLUDED_RP2_MPHALPORT_H
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