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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020-2021 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/runtime.h"
#include "py/stream.h"
#include "py/mphal.h"
#include "lib/timeutils/timeutils.h"
#include "tusb.h"
#include "uart.h"
#include "hardware/rtc.h"
#if MICROPY_HW_ENABLE_UART_REPL
#ifndef UART_BUFFER_LEN
// reasonably big so we can paste
#define UART_BUFFER_LEN 256
#endif
STATIC uint8_t stdin_ringbuf_array[UART_BUFFER_LEN];
ringbuf_t stdin_ringbuf = { stdin_ringbuf_array, sizeof(stdin_ringbuf_array) };
#endif
#if MICROPY_KBD_EXCEPTION
int mp_interrupt_char = -1;
void tud_cdc_rx_wanted_cb(uint8_t itf, char wanted_char) {
(void)itf;
(void)wanted_char;
tud_cdc_read_char(); // discard interrupt char
mp_keyboard_interrupt();
}
void mp_hal_set_interrupt_char(int c) {
mp_interrupt_char = c;
tud_cdc_set_wanted_char(c);
}
#endif
uintptr_t mp_hal_stdio_poll(uintptr_t poll_flags) {
uintptr_t ret = 0;
#if MICROPY_HW_ENABLE_UART_REPL
if ((poll_flags & MP_STREAM_POLL_RD) && ringbuf_peek(&stdin_ringbuf) != -1) {
ret |= MP_STREAM_POLL_RD;
}
#endif
#if MICROPY_HW_ENABLE_USBDEV
if (tud_cdc_connected() && tud_cdc_available()) {
ret |= MP_STREAM_POLL_RD;
}
#endif
return ret;
}
// Receive single character
int mp_hal_stdin_rx_chr(void) {
for (;;) {
#if MICROPY_HW_ENABLE_UART_REPL
int c = ringbuf_get(&stdin_ringbuf);
if (c != -1) {
return c;
}
#endif
#if MICROPY_HW_ENABLE_USBDEV
if (tud_cdc_connected() && tud_cdc_available()) {
uint8_t buf[1];
uint32_t count = tud_cdc_read(buf, sizeof(buf));
if (count) {
return buf[0];
}
}
#endif
MICROPY_EVENT_POLL_HOOK
}
}
// Send string of given length
void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
#if MICROPY_HW_ENABLE_UART_REPL
mp_uart_write_strn(str, len);
#endif
#if MICROPY_HW_ENABLE_USBDEV
if (tud_cdc_connected()) {
for (size_t i = 0; i < len;) {
uint32_t n = len - i;
if (n > CFG_TUD_CDC_EP_BUFSIZE) {
n = CFG_TUD_CDC_EP_BUFSIZE;
}
while (n > tud_cdc_write_available()) {
tud_task();
tud_cdc_write_flush();
}
uint32_t n2 = tud_cdc_write(str + i, n);
tud_task();
tud_cdc_write_flush();
i += n2;
}
}
#endif
}
void mp_hal_delay_ms(mp_uint_t ms) {
absolute_time_t t = make_timeout_time_ms(ms);
while (!time_reached(t)) {
mp_handle_pending(true);
best_effort_wfe_or_timeout(t);
MICROPY_HW_USBDEV_TASK_HOOK
}
}
uint64_t mp_hal_time_ns(void) {
datetime_t t;
rtc_get_datetime(&t);
uint64_t s = timeutils_seconds_since_epoch(t.year, t.month, t.day, t.hour, t.min, t.sec);
return s * 1000000000ULL;
}
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