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+/*
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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) 2018 Armink (armink.ztl@gmail.com)
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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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+#include <stdio.h>
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+
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+#include <rtthread.h>
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+#include <py/mpconfig.h>
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+#include <py/runtime.h>
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+#include "mphalport.h"
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+#include "rtt_getchar.h"
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+
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+int mp_hal_stdin_rx_chr(void) {
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+ char ch;
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+ while (1) {
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+ ch = rtt_getchar();
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+ if (ch != 0xFF) {
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+ break;
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+ }
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+ MICROPY_EVENT_POLL_HOOK;
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+ rt_thread_delay(1);
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+ }
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+ return ch;
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+}
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+
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+void mp_hal_stdout_tx_char(char c) {
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+ rt_device_t console;
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+
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+ console = rt_console_get_device();
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+ rt_device_write(console, 0, &c, 1);
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+}
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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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+
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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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+
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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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+ rt_device_t console;
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+
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+ console = rt_console_get_device();
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+ if (console) {
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+ MP_THREAD_GIL_EXIT();
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+ rt_device_write(console, 0, str, len);
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+ MP_THREAD_GIL_ENTER();
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+ }
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+}
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+
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+mp_uint_t mp_hal_ticks_us(void) {
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+ return rt_tick_get() * 1000;
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+}
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+
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+mp_uint_t mp_hal_ticks_ms(void) {
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+ return rt_tick_get() * 1000 / RT_TICK_PER_SECOND;
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+}
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+
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+mp_uint_t mp_hal_ticks_cpu(void) {
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+ return rt_tick_get();
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+}
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+
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+void mp_hal_delay_us(mp_uint_t us) {
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+ rt_tick_t t0 = rt_tick_get(), t1, dt;
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+ uint64_t dtick = us * RT_TICK_PER_SECOND / 1000000L;
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+ while (1) {
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+ t1 = rt_tick_get();
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+ dt = t1 - t0;
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+ if (dt >= dtick) {
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+ break;
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+ }
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+ mp_handle_pending();
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+ }
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+}
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+
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+void mp_hal_delay_ms(mp_uint_t ms) {
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+ rt_tick_t t0 = rt_tick_get(), t1, dt;
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+ uint64_t dtick = ms * RT_TICK_PER_SECOND / 1000L;
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+ while (1) {
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+ t1 = rt_tick_get();
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+ dt = t1 - t0;
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+ if (dt >= dtick) {
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+ break;
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+ }
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+ MICROPY_EVENT_POLL_HOOK;
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+ rt_thread_delay(1);
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+ }
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+}
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armink