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32c65ad455
This commit adds an `attached_to_repl` property to each UART, and makes sure that property is correctly set/unset when the UART is attached to or detached from the REPL. That property is then used to make sure incoming characters on the UART are only checked for the interrupt character if the UART is attached to the REPL. Otherwise a board without REPL on UART can have its code interrupted if ctrl-C is received on the UART. Also, put incoming UART characters on to `stdin_ringbuf` instead of the UARTs ring buffer (the former is much larger than the latter). Signed-off-by: Damien George <damien@micropython.org>
64 lines
2.4 KiB
C
64 lines
2.4 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) 2013-2023 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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// This file is never compiled standalone, it's included directly from
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// extmod/modos.c via MICROPY_PY_OS_INCLUDEFILE.
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#include "py/runtime.h"
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#include "extmod/modmachine.h"
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#include "drivers/rng.h"
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#include "modules/machine/uart.h"
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#if MICROPY_PY_OS_URANDOM
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// Return a bytes object with n random bytes, generated by the hardware random number generator.
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static mp_obj_t mp_os_urandom(mp_obj_t num) {
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mp_int_t n = mp_obj_get_int(num);
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vstr_t vstr;
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vstr_init_len(&vstr, n);
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for (int i = 0; i < n; i++) {
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vstr.buf[i] = (uint8_t)(rng_generate_random_word() & 0xFF);
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}
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return mp_obj_new_bytes_from_vstr(&vstr);
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}
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static MP_DEFINE_CONST_FUN_OBJ_1(mp_os_urandom_obj, mp_os_urandom);
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#endif
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#if MICROPY_PY_OS_DUPTERM
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void mp_os_dupterm_stream_detached_attached(mp_obj_t stream_detached, mp_obj_t stream_attached) {
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#if MICROPY_PY_MACHINE_UART
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if (mp_obj_get_type(stream_detached) == &machine_uart_type) {
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uart_attach_to_repl(MP_OBJ_TO_PTR(stream_detached), false);
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}
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#endif
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#if MICROPY_PY_MACHINE_UART
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if (mp_obj_get_type(stream_attached) == &machine_uart_type) {
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uart_attach_to_repl(MP_OBJ_TO_PTR(stream_attached), true);
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}
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#endif
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}
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#endif // MICROPY_PY_OS_DUPTERM
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