1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 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/mphal.h"
#include "samd_soc.h"
#include "tusb.h"
#if MICROPY_KBD_EXCEPTION
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) {
tud_cdc_set_wanted_char(c);
}
#endif
void mp_hal_delay_ms(mp_uint_t ms) {
ms += 1;
uint32_t t0 = systick_ms;
while (systick_ms - t0 < ms) {
MICROPY_EVENT_POLL_HOOK
}
}
void mp_hal_delay_us(mp_uint_t us) {
uint32_t ms = us / 1000 + 1;
uint32_t t0 = systick_ms;
while (systick_ms - t0 < ms) {
__WFI();
}
}
int mp_hal_stdin_rx_chr(void) {
for (;;) {
if (USARTx->USART.INTFLAG.bit.RXC) {
return USARTx->USART.DATA.bit.DATA;
}
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];
}
}
__WFI();
}
}
void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
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()) {
__WFI();
}
uint32_t n2 = tud_cdc_write(str + i, n);
tud_cdc_write_flush();
i += n2;
}
}
while (len--) {
while (!(USARTx->USART.INTFLAG.bit.DRE)) {
}
USARTx->USART.DATA.bit.DATA = *str++;
}
}
|
