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https://github.com/micropython/micropython.git
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7ca70edae7
Using the newly added `uart_rx_any()` and system ticks functions. Signed-off-by: iabdalkader <i.abdalkader@gmail.com>
99 lines
2.7 KiB
C
99 lines
2.7 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) 2024 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/mphal.h"
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#include "py/stream.h"
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#include "shared/runtime/semihosting_arm.h"
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#include "uart.h"
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// UART is better behaved with redirection under qemu-system-arm, so prefer that for stdio.
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#define USE_UART (1)
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#define USE_SEMIHOSTING (0)
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uintptr_t ticks_ms(void);
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uintptr_t ticks_us(void);
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uintptr_t mp_hal_stdio_poll(uintptr_t poll_flags) {
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#if USE_UART
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if ((poll_flags & MP_STREAM_POLL_RD) && uart_rx_any()) {
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return MP_STREAM_POLL_RD;
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}
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#endif
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return 0;
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}
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int mp_hal_stdin_rx_chr(void) {
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for (;;) {
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#if USE_UART
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int c = uart_rx_chr();
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if (c >= 0) {
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return c;
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}
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#endif
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#if USE_SEMIHOSTING
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char str[1];
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int ret = mp_semihosting_rx_chars(str, 1);
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if (ret == 0) {
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return str[0];
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}
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#endif
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}
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}
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mp_uint_t mp_hal_stdout_tx_strn(const char *str, size_t len) {
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#if USE_UART
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uart_tx_strn(str, len);
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#endif
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#if USE_SEMIHOSTING
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mp_semihosting_tx_strn(str, len);
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#endif
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return len;
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}
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mp_uint_t mp_hal_ticks_ms(void) {
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return ticks_ms();
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}
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mp_uint_t mp_hal_ticks_us(void) {
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return ticks_us();
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}
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void mp_hal_delay_ms(mp_uint_t ms) {
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mp_uint_t start = mp_hal_ticks_ms();
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while (mp_hal_ticks_ms() - start < ms) {
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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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mp_uint_t start = mp_hal_ticks_us();
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while (mp_hal_ticks_us() - start < us) {
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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 0;
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}
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