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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* 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.
*
* This file is part of the TinyUSB stack.
*/
/** \ingroup group_demo
* \defgroup group_board Boards Abstraction Layer
* @{ */
#ifndef _BSP_BOARD_H_
#define _BSP_BOARD_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#include <stdbool.h>
#include "ansi_escape.h"
#include "tusb.h"
#define CFG_UART_BAUDRATE 115200
//--------------------------------------------------------------------+
// Board Porting API
// For simplicity, only one LED and one Button are used
//--------------------------------------------------------------------+
// Initialize on-board peripherals : led, button, uart and USB
void board_init(void);
// Turn LED on or off
void board_led_write(bool state);
// Get the current state of button
// a '1' means active (pressed), a '0' means inactive.
uint32_t board_button_read(void);
// Get characters from UART
int board_uart_read(uint8_t* buf, int len);
// Send characters to UART
int board_uart_write(void const * buf, int len);
#if CFG_TUSB_OS == OPT_OS_NONE
// Get current milliseconds, must be implemented when no RTOS is used
uint32_t board_millis(void);
#elif CFG_TUSB_OS == OPT_OS_FREERTOS
static inline uint32_t board_millis(void)
{
return ( ( ((uint64_t) xTaskGetTickCount()) * 1000) / configTICK_RATE_HZ );
}
#elif CFG_TUSB_OS == OPT_OS_MYNEWT
static inline uint32_t board_millis(void)
{
return os_time_ticks_to_ms32( os_time_get() );
}
#elif
#error "Need to implement board_millis() for this OS"
#endif
//--------------------------------------------------------------------+
// Helper functions
//--------------------------------------------------------------------+
static inline void board_led_on(void)
{
board_led_write(true);
}
static inline void board_led_off(void)
{
board_led_write(false);
}
static inline void board_delay(uint32_t ms)
{
uint32_t start_ms = board_millis();
while (board_millis() - start_ms < ms)
{
// take chance to run usb background
tud_task();
}
}
static inline int8_t board_uart_getchar(void)
{
uint8_t c;
return board_uart_read(&c, 1) ? c : (-1);
}
static inline int board_uart_putchar(uint8_t c)
{
return board_uart_write(&c, 1);
}
#ifdef __cplusplus
}
#endif
#endif /* _BSP_BOARD_H_ */
/** @} */
|
