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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/******************************************************************************
* The MIT License
*
* Copyright (c) 2011, 2012 LeafLabs, LLC.
*
* 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.
*****************************************************************************/
/**
* @file libmaple/stm32f1/timer.c
* @author Marti Bolivar <mbolivar@leaflabs.com>
* @brief STM32F1 timer.
*/
/* Notes:
*
* - We use STM32F1 density test macros throughout to avoid defining
* symbols or linking in code that would use timers that are
* unavailable in a given density. For example, TIM5 doesn't exist
* on medium-density, and TIM9 doesn't exist on high-density, so we
* don't define or use TIM5 when being compiled for medium-density,
* and similarly for TIM9 and high-density.
*
* This makes a mess, but helps avoid bloat and ensures backwards
* compatibility. Since the mess is manageable and there don't seem
* to be any plans on ST's part to add new STM32F1 lines or
* densities, we'll live with it.
*/
#include <libmaple/timer.h>
#include "timer_private.h"
/*
* Devices
*
* Defer to the timer_private API.
*/
static timer_dev timer1 = ADVANCED_TIMER(1);
static timer_dev timer2 = GENERAL_TIMER(2);
static timer_dev timer3 = GENERAL_TIMER(3);
static timer_dev timer4 = GENERAL_TIMER(4);
/** Timer 1 device (advanced) */
timer_dev *TIMER1 = &timer1;
/** Timer 2 device (general-purpose) */
timer_dev *TIMER2 = &timer2;
/** Timer 3 device (general-purpose) */
timer_dev *TIMER3 = &timer3;
/** Timer 4 device (general-purpose) */
timer_dev *TIMER4 = &timer4;
#if defined(STM32_HIGH_DENSITY) || defined(STM32_XL_DENSITY)
static timer_dev timer5 = GENERAL_TIMER(5);
static timer_dev timer6 = BASIC_TIMER(6);
static timer_dev timer7 = BASIC_TIMER(7);
static timer_dev timer8 = ADVANCED_TIMER(8);
/** Timer 5 device (general-purpose) */
timer_dev *TIMER5 = &timer5;
/** Timer 6 device (basic) */
timer_dev *TIMER6 = &timer6;
/** Timer 7 device (basic) */
timer_dev *TIMER7 = &timer7;
/** Timer 8 device (advanced) */
timer_dev *TIMER8 = &timer8;
#endif /* defined(STM32_HIGH_DENSITY) || defined(STM32_XL_DENSITY) */
#ifdef STM32_XL_DENSITY
/* TIM9 has UIE, CC1IE, CC2IE, TIE bits in DIER. */
static timer_dev timer9 = RESTRICTED_GENERAL_TIMER(9, TIMER_DIER_TIE_BIT);
/* TIM10 has UIE, CC1IE. */
static timer_dev timer10 = RESTRICTED_GENERAL_TIMER(10, TIMER_DIER_CC1IE_BIT);
/* TIM11 has UIE, CC1IE. */
static timer_dev timer11 = RESTRICTED_GENERAL_TIMER(11, TIMER_DIER_CC1IE_BIT);
/* TIM12 has UIE, CC1IE, CC2IE, TIE. */
static timer_dev timer12 = RESTRICTED_GENERAL_TIMER(12, TIMER_DIER_TIE_BIT);
/* TIM13 has UIE, CC1IE. */
static timer_dev timer13 = RESTRICTED_GENERAL_TIMER(13, TIMER_DIER_CC1IE_BIT);
/* TIM14 has UIE, CC1IE. */
static timer_dev timer14 = RESTRICTED_GENERAL_TIMER(14, TIMER_DIER_CC1IE_BIT);
/** Timer 9 device (general-purpose) */
timer_dev *TIMER9 = &timer9;
/** Timer 10 device (general-purpose) */
timer_dev *TIMER10 = &timer10;
/** Timer 11 device (general-purpose) */
timer_dev *TIMER11 = &timer11;
/** Timer 12 device (general-purpose) */
timer_dev *TIMER12 = &timer12;
/** Timer 13 device (general-purpose) */
timer_dev *TIMER13 = &timer13;
/** Timer 14 device (general-purpose) */
timer_dev *TIMER14 = &timer14;
#endif /* STM32_XL_DENSITY */
/*
* Routines
*/
/**
* @brief Call a function on timer devices.
* @param fn Function to call on each timer device.
*/
void timer_foreach(void (*fn)(timer_dev*)) {
fn(TIMER1);
fn(TIMER2);
fn(TIMER3);
fn(TIMER4);
#if defined(STM32_HIGH_DENSITY) || defined(STM32_XL_DENSITY)
fn(TIMER5);
fn(TIMER6);
fn(TIMER7);
fn(TIMER8);
#endif
#ifdef STM32_XL_DENSITY
fn(TIMER9);
fn(TIMER10);
fn(TIMER11);
fn(TIMER12);
fn(TIMER13);
fn(TIMER14);
#endif
}
/*
* IRQ handlers
*
* Defer to the timer_private dispatch API.
*
* FIXME: The names of these handlers are inaccurate since XL-density
* devices came out. Update these to match the STM32F2 names, maybe
* using some weak symbol magic to preserve backwards compatibility if
* possible.
*/
void __irq_tim1_brk(void) {
dispatch_adv_brk(TIMER1);
#ifdef STM32_XL_DENSITY
dispatch_tim_9_12(TIMER9);
#endif
}
void __irq_tim1_up(void) {
dispatch_adv_up(TIMER1);
#ifdef STM32_XL_DENSITY
dispatch_tim_10_11_13_14(TIMER10);
#endif
}
void __irq_tim1_trg_com(void) {
dispatch_adv_trg_com(TIMER1);
#ifdef STM32_XL_DENSITY
dispatch_tim_10_11_13_14(TIMER11);
#endif
}
void __irq_tim1_cc(void) {
dispatch_adv_cc(TIMER1);
}
void __irq_tim2(void) {
dispatch_general(TIMER2);
}
void __irq_tim3(void) {
dispatch_general(TIMER3);
}
void __irq_tim4(void) {
dispatch_general(TIMER4);
}
#if defined(STM32_HIGH_DENSITY) || defined(STM32_XL_DENSITY)
void __irq_tim5(void) {
dispatch_general(TIMER5);
}
void __irq_tim6(void) {
dispatch_basic(TIMER6);
}
void __irq_tim7(void) {
dispatch_basic(TIMER7);
}
void __irq_tim8_brk(void) {
dispatch_adv_brk(TIMER8);
#ifdef STM32_XL_DENSITY
dispatch_tim_9_12(TIMER12);
#endif
}
void __irq_tim8_up(void) {
dispatch_adv_up(TIMER8);
#ifdef STM32_XL_DENSITY
dispatch_tim_10_11_13_14(TIMER13);
#endif
}
void __irq_tim8_trg_com(void) {
dispatch_adv_trg_com(TIMER8);
#ifdef STM32_XL_DENSITY
dispatch_tim_10_11_13_14(TIMER14);
#endif
}
void __irq_tim8_cc(void) {
dispatch_adv_cc(TIMER8);
}
#endif /* defined(STM32_HIGH_DENSITY) || defined(STM32_XL_DENSITY) */
|
