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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/*
* osal_none.h
*
* Created on: Jan 19, 2013
* Author: hathach
*/
/*
* Software License Agreement (BSD License)
* Copyright (c) 2013, hathach (tinyusb.net)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the tiny usb stack.
*/
/** \file
* \brief TBD
*
* \note TBD
*/
/** \ingroup TBD
* \defgroup TBD
* \brief TBD
*
* @{
*/
#ifndef _TUSB_OSAL_NONE_H_
#define _TUSB_OSAL_NONE_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "osal_common.h"
typedef uint32_t osal_timeout_t;
//--------------------------------------------------------------------+
// TASK API
// NOTES: Each blocking OSAL_NONE services such as semaphore wait,
// queue receive embedded return statement, therefore local variable
// retain value before/after such services needed to declare as static
// OSAL_TASK_LOOP
// {
// OSAL_TASK_LOOP_BEGIN
//
// task body statements
//
// OSAL_TASK_LOOP_ENG
// }
//--------------------------------------------------------------------+
//#define osal_task_create(code, name, stack_depth, parameters, prio)
#define OSAL_TASK_LOOP \
static uint16_t state = 0;\
switch(state)\
#define OSAL_TASK_LOOP_BEGIN \
case 0:
#define OSAL_TASK_LOOP_END \
default:\
state = 0;
//--------------------------------------------------------------------+
// Semaphore API
//--------------------------------------------------------------------+
typedef volatile uint8_t osal_semaphore_t;
typedef osal_semaphore_t * osal_semaphore_handle_t;
static inline osal_semaphore_handle_t osal_semaphore_create(osal_semaphore_t * const p_sem) ATTR_ALWAYS_INLINE;
static inline osal_semaphore_handle_t osal_semaphore_create(osal_semaphore_t * const p_sem)
{
(*p_sem) = 0;
return (osal_semaphore_handle_t) p_sem;
}
static inline tusb_error_t osal_semaphore_post(osal_semaphore_handle_t const sem_hdl) ATTR_ALWAYS_INLINE;
static inline tusb_error_t osal_semaphore_post(osal_semaphore_handle_t const sem_hdl)
{
(*sem_hdl)++;
return TUSB_ERROR_NONE;
}
#define osal_semaphore_wait(sem_hdl, msec, p_error) \
do {\
state = __LINE__; case __LINE__:\
if( (*sem_hdl) == 0 ) \
return;\
else\
(*sem_hdl)--; /*TODO mutex hal_interrupt_disable consideration*/\
}while(0)
//--------------------------------------------------------------------+
// QUEUE API
//--------------------------------------------------------------------+
typedef struct{
uint32_t * const buffer ; ///< buffer pointer
uint16_t const depth ; ///< buffer size
volatile uint16_t count ; ///< bytes in fifo
volatile uint16_t wr_idx ; ///< write pointer
volatile uint16_t rd_idx ; ///< read pointer
} osal_queue_t;
typedef osal_queue_t * osal_queue_handle_t;
// use to declare a queue, within the scope of tinyusb, should only use primitive type only
#define OSAL_DEF_QUEUE(name, queue_depth, type)\
uint32_t name##_buffer[queue_depth];\
osal_queue_t name = {\
.buffer = name##_buffer,\
.depth = queue_depth\
}
static inline osal_queue_handle_t osal_queue_create(osal_queue_t * const p_queue) ATTR_ALWAYS_INLINE;
static inline osal_queue_handle_t osal_queue_create(osal_queue_t * const p_queue)
{
p_queue->count = p_queue->wr_idx = p_queue->rd_idx = 0;
return (osal_queue_handle_t) p_queue;
}
// when queue is full, it will overwrite the oldest data in the queue
static inline tusb_error_t osal_queue_send(osal_queue_handle_t const queue_hdl, uint32_t data) ATTR_ALWAYS_INLINE;
static inline tusb_error_t osal_queue_send(osal_queue_handle_t const queue_hdl, uint32_t data)
{
//TODO mutex lock hal_interrupt_disable
queue_hdl->buffer[queue_hdl->wr_idx] = data;
queue_hdl->wr_idx = (queue_hdl->wr_idx + 1) % queue_hdl->depth;
if (queue_hdl->depth == queue_hdl->count) // queue is full, 1st rd is overwritten
{
queue_hdl->rd_idx = queue_hdl->wr_idx; // keep full state
}else
{
queue_hdl->count++;
}
//TODO mutex unlock hal_interrupt_enable
return TUSB_ERROR_NONE;
}
#define osal_queue_receive(queue_hdl, p_data, msec) \
do {\
state = __LINE__; case __LINE__:\
if( queue_hdl-> count == 0 ) \
return;\
else{\
/*TODO mutex lock hal_interrupt_disable */\
*p_data = queue_hdl->buffer[queue_hdl->rd_idx];\
queue_hdl->rd_idx = (queue_hdl->rd_idx + 1) % queue_hdl->depth;\
queue_hdl->count--;\
/*TODO mutex unlock hal_interrupt_enable */\
}\
}while(0)
// queue_send, queue_receive
#ifdef __cplusplus
}
#endif
#endif /* _TUSB_OSAL_NONE_H_ */
/** @} */
|
