ca63ead2d8
If USB CDC is connected and the board sends data, but the host does not receive the data, the device locks up. This is fixed in this commit by having a timeout of 500ms, after which time the transmission is skipped.
165 lines
4.9 KiB
C
165 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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#define MICROPY_HW_USB_CDC_TX_TIMEOUT (500)
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extern int mp_interrupt_char;
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extern volatile uint32_t systick_ms;
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uint64_t mp_hal_ticks_us_64(void);
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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 uint64_t mp_hal_ticks_ms_64(void) {
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return mp_hal_ticks_us_64() / 1000;
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}
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static inline mp_uint_t mp_hal_ticks_ms(void) {
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return (mp_uint_t)mp_hal_ticks_ms_64();
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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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#else
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return (mp_uint_t)mp_hal_ticks_us_64();
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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_us_64() * 1000;
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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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#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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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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