kopia lustrzana https://github.com/micropython/micropython
143 wiersze
4.0 KiB
C
143 wiersze
4.0 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) 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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#include "py/runtime.h"
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#include "py/stream.h"
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#include "py/mphal.h"
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#include "shared/timeutils/timeutils.h"
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#include "tusb.h"
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#include "uart.h"
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#include "hardware/rtc.h"
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#if MICROPY_HW_ENABLE_UART_REPL
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#ifndef UART_BUFFER_LEN
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// reasonably big so we can paste
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#define UART_BUFFER_LEN 256
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#endif
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STATIC uint8_t stdin_ringbuf_array[UART_BUFFER_LEN];
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ringbuf_t stdin_ringbuf = { stdin_ringbuf_array, sizeof(stdin_ringbuf_array) };
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#endif
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#if MICROPY_KBD_EXCEPTION
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int mp_interrupt_char = -1;
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void tud_cdc_rx_wanted_cb(uint8_t itf, char wanted_char) {
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(void)itf;
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(void)wanted_char;
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tud_cdc_read_char(); // discard interrupt char
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mp_sched_keyboard_interrupt();
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}
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void mp_hal_set_interrupt_char(int c) {
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mp_interrupt_char = c;
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tud_cdc_set_wanted_char(c);
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}
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#endif
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uintptr_t mp_hal_stdio_poll(uintptr_t poll_flags) {
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uintptr_t ret = 0;
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#if MICROPY_HW_ENABLE_UART_REPL
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if ((poll_flags & MP_STREAM_POLL_RD) && ringbuf_peek(&stdin_ringbuf) != -1) {
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ret |= MP_STREAM_POLL_RD;
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}
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#endif
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#if MICROPY_HW_ENABLE_USBDEV
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if (tud_cdc_connected() && tud_cdc_available()) {
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ret |= MP_STREAM_POLL_RD;
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}
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#endif
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return ret;
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}
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// Receive single character
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int mp_hal_stdin_rx_chr(void) {
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for (;;) {
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#if MICROPY_HW_ENABLE_UART_REPL
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int c = ringbuf_get(&stdin_ringbuf);
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if (c != -1) {
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return c;
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}
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#endif
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#if MICROPY_HW_ENABLE_USBDEV
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if (tud_cdc_connected() && tud_cdc_available()) {
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uint8_t buf[1];
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uint32_t count = tud_cdc_read(buf, sizeof(buf));
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if (count) {
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return buf[0];
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}
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}
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#endif
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MICROPY_EVENT_POLL_HOOK
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}
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}
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// Send string of given length
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void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
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#if MICROPY_HW_ENABLE_UART_REPL
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mp_uart_write_strn(str, len);
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#endif
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#if MICROPY_HW_ENABLE_USBDEV
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if (tud_cdc_connected()) {
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for (size_t i = 0; i < len;) {
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uint32_t n = len - i;
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if (n > CFG_TUD_CDC_EP_BUFSIZE) {
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n = CFG_TUD_CDC_EP_BUFSIZE;
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}
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while (n > tud_cdc_write_available()) {
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tud_task();
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tud_cdc_write_flush();
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}
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uint32_t n2 = tud_cdc_write(str + i, n);
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tud_task();
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tud_cdc_write_flush();
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i += n2;
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}
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}
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#endif
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}
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void mp_hal_delay_ms(mp_uint_t ms) {
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absolute_time_t t = make_timeout_time_ms(ms);
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while (!time_reached(t)) {
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mp_handle_pending(true);
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best_effort_wfe_or_timeout(t);
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MICROPY_HW_USBDEV_TASK_HOOK
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}
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}
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uint64_t mp_hal_time_ns(void) {
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datetime_t t;
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rtc_get_datetime(&t);
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uint64_t s = timeutils_seconds_since_epoch(t.year, t.month, t.day, t.hour, t.min, t.sec);
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return s * 1000000000ULL;
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}
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