113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
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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) 2019 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/mpstate.h"
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#include "py/mphal.h"
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#include "lib/utils/interrupt_char.h"
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#include "samd_soc.h"
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#include "tusb.h"
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#if MICROPY_KBD_EXCEPTION
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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_keyboard_interrupt();
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}
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void mp_hal_set_interrupt_char(int c) {
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if (c != -1) {
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mp_obj_exception_clear_traceback(MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception)));
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}
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tud_cdc_set_wanted_char(c);
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}
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void mp_keyboard_interrupt(void) {
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MP_STATE_VM(mp_pending_exception) = MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception));
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#if MICROPY_ENABLE_SCHEDULER
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if (MP_STATE_VM(sched_state) == MP_SCHED_IDLE) {
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MP_STATE_VM(sched_state) = MP_SCHED_PENDING;
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}
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#endif
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}
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#endif
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void mp_hal_delay_ms(mp_uint_t ms) {
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ms += 1;
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uint32_t t0 = systick_ms;
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while (systick_ms - t0 < ms) {
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MICROPY_EVENT_POLL_HOOK
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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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uint32_t ms = us / 1000 + 1;
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uint32_t t0 = systick_ms;
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while (systick_ms - t0 < ms) {
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__WFI();
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}
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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 (USARTx->USART.INTFLAG.bit.RXC) {
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return USARTx->USART.DATA.bit.DATA;
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}
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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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__WFI();
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}
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}
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void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
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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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uint32_t n2 = tud_cdc_write(str + i, n);
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if (n2 < n) {
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while (!tud_cdc_write_flush()) {
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__WFI();
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}
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}
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i += n2;
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}
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while (!tud_cdc_write_flush()) {
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__WFI();
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}
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}
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while (len--) {
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while (!(USARTx->USART.INTFLAG.bit.DRE)) { }
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USARTx->USART.DATA.bit.DATA = *str++;
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}
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}
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