169 lines
4.9 KiB
C
169 lines
4.9 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019-2021 Damien P. George
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* Copyright (c) 2022 Robert Hammelrath
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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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#ifndef MICROPY_INCLUDED_SAMD_MPHALPORT_H
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#define MICROPY_INCLUDED_SAMD_MPHALPORT_H
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#include "py/ringbuf.h"
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#include "py/mpconfig.h"
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// ASF4
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#include "hal_gpio.h"
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#include "hpl_time_measure.h"
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#include "sam.h"
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extern int mp_interrupt_char;
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extern volatile uint32_t systick_ms;
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extern volatile uint32_t systick_ms_upper;
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void mp_hal_set_interrupt_char(int c);
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// Define an alias fo systick_ms, because the shared softtimer.c uses
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// the symbol uwTick for the systick ms counter.
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#define uwTick systick_ms
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#define mp_hal_delay_us_fast mp_hal_delay_us
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static inline mp_uint_t mp_hal_ticks_ms(void) {
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return systick_ms;
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}
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static inline uint64_t mp_hal_ticks_ms_64(void) {
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return ((uint64_t)systick_ms_upper << 32) + systick_ms;
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}
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static inline mp_uint_t mp_hal_ticks_us(void) {
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#if defined(MCU_SAMD21)
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return REG_TC4_COUNT32_COUNT;
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#elif defined(MCU_SAMD51)
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TC0->COUNT32.CTRLBSET.reg = TC_CTRLBSET_CMD_READSYNC;
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while (TC0->COUNT32.CTRLBSET.reg != 0) {
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}
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return REG_TC0_COUNT32_COUNT >> 3;
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#else
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return systick_ms * 1000;
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#endif
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}
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#if defined(MCU_SAMD21)
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#define mp_hal_ticks_cpu mp_hal_ticks_us
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#elif defined(MCU_SAMD51)
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static inline void mp_hal_ticks_cpu_enable(void) {
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CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
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DWT->CYCCNT = 0;
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DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk;
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}
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static inline mp_uint_t mp_hal_ticks_cpu(void) {
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return (system_time_t)DWT->CYCCNT;
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}
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#endif
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static inline uint64_t mp_hal_time_ns(void) {
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return mp_hal_ticks_ms_64() * 1000000;
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}
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// C-level pin HAL
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#include "py/obj.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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void mp_hal_set_pin_mux(mp_hal_pin_obj_t pin, uint8_t mux);
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void mp_hal_clr_pin_mux(mp_hal_pin_obj_t pin);
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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_pin_direction(pin, GPIO_DIRECTION_IN);
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machine_pin_open_drain_mask[pin / 32] &= ~(1 << (pin % 32));
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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_pin_direction(pin, GPIO_DIRECTION_OUT);
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machine_pin_open_drain_mask[pin / 32] &= ~(1 << (pin % 32));
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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_pin_direction(pin, GPIO_DIRECTION_IN);
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gpio_set_pin_pull_mode(pin, GPIO_PULL_UP);
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machine_pin_open_drain_mask[pin / 32] |= 1 << (pin % 32);
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}
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static inline unsigned int mp_hal_get_pin_direction(mp_hal_pin_obj_t pin) {
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return (PORT->Group[pin / 32].DIR.reg & (1 << (pin % 32))) ?
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GPIO_DIRECTION_OUT : GPIO_DIRECTION_IN;
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}
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static inline unsigned int mp_hal_get_pull_mode(mp_hal_pin_obj_t pin) {
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bool pull_en = (PORT->Group[pin / 32].PINCFG[pin % 32].reg & PORT_PINCFG_PULLEN) != 0;
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if (pull_en) {
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return gpio_get_pin_level(pin) ? GPIO_PULL_UP : GPIO_PULL_DOWN;
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} else {
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return GPIO_PULL_OFF;
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}
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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_level(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_set_pin_level(pin, v);
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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_set_pin_level(pin, 0);
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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_pin_level(pin, 1);
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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_pin_direction(pin, GPIO_DIRECTION_OUT);
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gpio_set_pin_level(pin, 0);
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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_pin_direction(pin, GPIO_DIRECTION_IN);
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gpio_set_pin_pull_mode(pin, GPIO_PULL_UP);
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}
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#endif // MICROPY_INCLUDED_SAMD_MPHALPORT_H
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