140 lines
3.8 KiB
C
140 lines
3.8 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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* Development of the code in this file was sponsored by Microbric Pty Ltd
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2014 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 <stdio.h>
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#include <sys/time.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "rom/uart.h"
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#include "py/obj.h"
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#include "py/mpstate.h"
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#include "py/mphal.h"
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#include "extmod/misc.h"
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#include "lib/utils/pyexec.h"
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STATIC uint8_t stdin_ringbuf_array[256];
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ringbuf_t stdin_ringbuf = {stdin_ringbuf_array, sizeof(stdin_ringbuf_array)};
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int mp_hal_stdin_rx_chr(void) {
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for (;;) {
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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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MICROPY_EVENT_POLL_HOOK
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vTaskDelay(1);
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}
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}
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void mp_hal_stdout_tx_char(char c) {
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uart_tx_one_char(c);
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//mp_uos_dupterm_tx_strn(&c, 1);
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}
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void mp_hal_stdout_tx_str(const char *str) {
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MP_THREAD_GIL_EXIT();
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while (*str) {
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mp_hal_stdout_tx_char(*str++);
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}
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MP_THREAD_GIL_ENTER();
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}
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void mp_hal_stdout_tx_strn(const char *str, uint32_t len) {
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MP_THREAD_GIL_EXIT();
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while (len--) {
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mp_hal_stdout_tx_char(*str++);
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}
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MP_THREAD_GIL_ENTER();
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}
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void mp_hal_stdout_tx_strn_cooked(const char *str, uint32_t len) {
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MP_THREAD_GIL_EXIT();
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while (len--) {
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if (*str == '\n') {
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mp_hal_stdout_tx_char('\r');
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}
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mp_hal_stdout_tx_char(*str++);
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}
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MP_THREAD_GIL_ENTER();
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}
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uint32_t mp_hal_ticks_ms(void) {
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return tv.tv_sec * 1000 + tv.tv_usec / 1000;
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}
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uint32_t mp_hal_ticks_us(void) {
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return tv.tv_sec * 1000000 + tv.tv_usec;
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}
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void mp_hal_delay_ms(uint32_t ms) {
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struct timeval tv_start;
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struct timeval tv_end;
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uint64_t dt;
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gettimeofday(&tv_start, NULL);
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for (;;) {
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gettimeofday(&tv_end, NULL);
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dt = (tv_end.tv_sec - tv_start.tv_sec) * 1000 + (tv_end.tv_usec - tv_start.tv_usec) / 1000;
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if (dt + portTICK_PERIOD_MS >= ms) {
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// doing a vTaskDelay would take us beyound requested delay time
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break;
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}
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MICROPY_EVENT_POLL_HOOK
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vTaskDelay(1);
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}
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if (dt < ms) {
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// do the remaining delay accurately
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ets_delay_us((ms - dt) * 1000);
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}
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}
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void mp_hal_delay_us(uint32_t us) {
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ets_delay_us(us);
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}
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// this function could do with improvements (eg use ets_delay_us)
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void mp_hal_delay_us_fast(uint32_t us) {
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uint32_t delay = ets_get_cpu_frequency() / 19;
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while (--us) {
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for (volatile uint32_t i = delay; i; --i) {
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}
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}
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}
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/*
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extern int mp_stream_errno;
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int *__errno() {
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return &mp_stream_errno;
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}
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*/
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