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
|
/*
* FreeRTOS Kernel V10.3.0
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* 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.
*
* http://www.FreeRTOS.org
* http://aws.amazon.com/freertos
*
* 1 tab == 4 spaces!
*/
/* Standard includes. */
#include <stdlib.h>
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/* Critical nesting should be initialised to a non zero value so interrupts don't
accidentally get enabled before the scheduler is started. */
#define portINITIAL_CRITICAL_NESTING (( StackType_t ) 10)
/* The PSW value assigned to tasks when they start to run for the first time. */
#define portPSW (( StackType_t ) 0x00000000)
/* We require the address of the pxCurrentTCB variable, but don't want to know
any details of its type. */
typedef void TCB_t;
extern volatile TCB_t * volatile pxCurrentTCB;
/* Keeps track of the nesting level of critical sections. */
volatile StackType_t usCriticalNesting = portINITIAL_CRITICAL_NESTING;
/*-----------------------------------------------------------*/
/* Sets up the timer to generate the tick interrupt. */
static void prvSetupTimerInterrupt( void );
/*-----------------------------------------------------------*/
StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
{
*pxTopOfStack = ( StackType_t ) pxCode; /* Task function start address */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) pxCode; /* Task function start address */
pxTopOfStack--;
*pxTopOfStack = portPSW; /* Initial PSW value */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x20202020; /* Initial Value of R20 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x21212121; /* Initial Value of R21 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x22222222; /* Initial Value of R22 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x23232323; /* Initial Value of R23 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x24242424; /* Initial Value of R24 */
pxTopOfStack--;
#if (__DATA_MODEL__ == 0) || (__DATA_MODEL__ == 1)
*pxTopOfStack = ( StackType_t ) 0x25252525; /* Initial Value of R25 */
pxTopOfStack--;
#endif /* configDATA_MODE */
*pxTopOfStack = ( StackType_t ) 0x26262626; /* Initial Value of R26 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x27272727; /* Initial Value of R27 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x28282828; /* Initial Value of R28 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x29292929; /* Initial Value of R29 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x30303030; /* Initial Value of R30 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x19191919; /* Initial Value of R19 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x18181818; /* Initial Value of R18 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x17171717; /* Initial Value of R17 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x16161616; /* Initial Value of R16 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x15151515; /* Initial Value of R15 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x14141414; /* Initial Value of R14 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x13131313; /* Initial Value of R13 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x12121212; /* Initial Value of R12 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x11111111; /* Initial Value of R11 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x10101010; /* Initial Value of R10 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x99999999; /* Initial Value of R09 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x88888888; /* Initial Value of R08 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x77777777; /* Initial Value of R07 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x66666666; /* Initial Value of R06 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x55555555; /* Initial Value of R05 */
pxTopOfStack--;
#if __DATA_MODEL__ == 0 || __DATA_MODEL__ == 1
*pxTopOfStack = ( StackType_t ) 0x44444444; /* Initial Value of R04 */
pxTopOfStack--;
#endif /* configDATA_MODE */
*pxTopOfStack = ( StackType_t ) 0x22222222; /* Initial Value of R02 */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) pvParameters; /* R1 is expected to hold the function parameter*/
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING;
/*
* Return a pointer to the top of the stack we have generated so this can
* be stored in the task control block for the task.
*/
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
BaseType_t xPortStartScheduler( void )
{
/* Setup the hardware to generate the tick. Interrupts are disabled when
this function is called. */
prvSetupTimerInterrupt();
/* Restore the context of the first task that is going to run. */
vPortStart();
/* Should not get here as the tasks are now running! */
return pdTRUE;
}
/*-----------------------------------------------------------*/
void vPortEndScheduler( void )
{
/* It is unlikely that the V850ES/Fx3 port will get stopped. If required simply
disable the tick interrupt here. */
}
/*-----------------------------------------------------------*/
/*
* Hardware initialisation to generate the RTOS tick. This uses
*/
static void prvSetupTimerInterrupt( void )
{
TM0CE = 0; /* TMM0 operation disable */
TM0EQMK0 = 1; /* INTTM0EQ0 interrupt disable */
TM0EQIF0 = 0; /* clear INTTM0EQ0 interrupt flag */
#ifdef __IAR_V850ES_Fx3__
{
TM0CMP0 = (((configCPU_CLOCK_HZ / configTICK_RATE_HZ) / 2)-1); /* divided by 2 because peripherals only run at CPU_CLOCK/2 */
}
#else
{
TM0CMP0 = (configCPU_CLOCK_HZ / configTICK_RATE_HZ);
}
#endif
TM0EQIC0 &= 0xF8;
TM0CTL0 = 0x00;
TM0EQIF0 = 0; /* clear INTTM0EQ0 interrupt flag */
TM0EQMK0 = 0; /* INTTM0EQ0 interrupt enable */
TM0CE = 1; /* TMM0 operation enable */
}
/*-----------------------------------------------------------*/
|
