blob: 6dbe4f0db2ca4fce3a2f23a8d1184b980ae340cd (
plain)
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
|
// Wrappers for AVR usb serial.
//
// Copyright (C) 2016,2017 Kevin O'Connor <kevin@koconnor.net>
//
// This file may be distributed under the terms of the GNU GPLv3 license.
#include <string.h> // memmove
#include "../lib/pjrc_usb_serial/usb_serial.h"
#include "board/misc.h" // console_sendf
#include "command.h" // command_dispatch
#include "sched.h" // DECL_INIT
static uint8_t receive_buf[MESSAGE_MAX], receive_pos;
void
usbserial_init(void)
{
usb_init();
}
DECL_INIT(usbserial_init);
// Check for new incoming data
static void
console_check_input(void)
{
for (;;) {
if (receive_pos >= sizeof(receive_buf))
break;
int16_t ret = usb_serial_getchar();
if (ret == -1)
break;
receive_buf[receive_pos++] = ret;
}
}
// Remove from the receive buffer the given number of bytes
static void
console_pop_input(uint8_t len)
{
uint8_t needcopy = receive_pos - len;
if (needcopy) {
memmove(receive_buf, &receive_buf[len], needcopy);
sched_wake_tasks();
}
receive_pos = needcopy;
}
// Process any incoming commands
void
console_task(void)
{
console_check_input();
uint_fast8_t pop_count;
int8_t ret = command_find_block(receive_buf, receive_pos, &pop_count);
if (ret > 0)
command_dispatch(receive_buf, pop_count);
if (ret)
console_pop_input(pop_count);
}
DECL_TASK(console_task);
// Encode and transmit a "response" message
void
console_sendf(const struct command_encoder *ce, va_list args)
{
// Generate message
static uint8_t buf[MESSAGE_MAX];
uint8_t msglen = command_encodef(buf, ce, args);
command_add_frame(buf, msglen);
// Transmit message
usb_serial_write((void*)buf, msglen);
usb_serial_flush_output();
}
|
