132 lines
3.9 KiB
C
132 lines
3.9 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) 2019 Damien P. George
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* Copyright (c) 2022 Robert Hammelrath
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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/runtime.h"
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#include "py/mphal.h"
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#include "py/stream.h"
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#include "shared/runtime/interrupt_char.h"
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#include "extmod/misc.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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int mp_interrupt_char = -1;
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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_sched_keyboard_interrupt();
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}
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void mp_hal_set_interrupt_char(int c) {
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mp_interrupt_char = c;
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tud_cdc_set_wanted_char(c);
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}
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#endif
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void mp_hal_set_pin_mux(mp_hal_pin_obj_t pin, uint8_t mux) {
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int pin_grp = pin / 32;
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int port_grp = (pin % 32) / 2;
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PORT->Group[pin_grp].PINCFG[pin % 32].bit.PMUXEN = 1; // Enable Mux
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if (pin & 1) {
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PORT->Group[pin_grp].PMUX[port_grp].bit.PMUXO = mux;
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} else {
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PORT->Group[pin_grp].PMUX[port_grp].bit.PMUXE = mux;
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}
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}
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void mp_hal_clr_pin_mux(mp_hal_pin_obj_t pin) {
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int pin_grp = pin / 32;
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PORT->Group[pin_grp].PINCFG[pin % 32].bit.PMUXEN = 0; // Disable Mux
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}
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void mp_hal_delay_ms(mp_uint_t ms) {
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if (ms > 10) {
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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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} else {
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mp_hal_delay_us(ms * 1000);
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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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if (us > 0) {
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uint32_t start = mp_hal_ticks_us();
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#if defined(MCU_SAMD21)
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// SAMD21 counter has effective 32 bit width
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while ((mp_hal_ticks_us() - start) < us) {
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}
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#elif defined(MCU_SAMD51)
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// SAMD51 counter has effective 29 bit width
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while (((mp_hal_ticks_us() - start) & (MICROPY_PY_UTIME_TICKS_PERIOD - 1)) < us) {
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}
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#endif
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}
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}
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uintptr_t mp_hal_stdio_poll(uintptr_t poll_flags) {
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uintptr_t ret = 0;
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if (tud_cdc_connected() && tud_cdc_available()) {
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ret |= MP_STREAM_POLL_RD;
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}
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return ret;
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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 (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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MICROPY_EVENT_POLL_HOOK
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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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if (n > CFG_TUD_CDC_EP_BUFSIZE) {
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n = CFG_TUD_CDC_EP_BUFSIZE;
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}
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while (n > tud_cdc_write_available()) {
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MICROPY_EVENT_POLL_HOOK
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}
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uint32_t n2 = tud_cdc_write(str + i, n);
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tud_cdc_write_flush();
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i += n2;
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}
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}
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}
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