ChibiOS  21.6.0
hal_lld.c
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1 /*
2  ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
3 
4  Licensed under the Apache License, Version 2.0 (the "License");
5  you may not use this file except in compliance with the License.
6  You may obtain a copy of the License at
7 
8  http://www.apache.org/licenses/LICENSE-2.0
9 
10  Unless required by applicable law or agreed to in writing, software
11  distributed under the License is distributed on an "AS IS" BASIS,
12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  See the License for the specific language governing permissions and
14  limitations under the License.
15 */
16 
17 /**
18  * @file hal_lld.c
19  * @brief PLATFORM HAL subsystem low level driver source.
20  *
21  * @addtogroup HAL
22  * @{
23  */
24 
25 #include "hal.h"
26 
27 /*===========================================================================*/
28 /* Driver local definitions. */
29 /*===========================================================================*/
30 
31 /*===========================================================================*/
32 /* Driver exported variables. */
33 /*===========================================================================*/
34 
35 #if defined(HAL_LLD_USE_CLOCK_MANAGEMENT) && !defined(__DOXYGEN__)
36 /**
37  * @brief Post-reset configuration, must be implemented.
38  */
39 const halclkcfg_t hal_clkcfg_reset = {
40  .dummy = 0U
41 };
42 
43 /**
44  * @brief Configuration from mcuconf.h, must be implemented.
45  */
46 const halclkcfg_t hal_clkcfg_default = {
47  .dummy = 0U
48 };
49 #endif
50 
51 /*===========================================================================*/
52 /* Driver local variables and types. */
53 /*===========================================================================*/
54 
55 /*===========================================================================*/
56 /* Driver local functions. */
57 /*===========================================================================*/
58 
59 /*===========================================================================*/
60 /* Driver interrupt handlers. */
61 /*===========================================================================*/
62 
63 /*===========================================================================*/
64 /* Driver exported functions. */
65 /*===========================================================================*/
66 
67 /**
68  * @brief Low level HAL driver initialization.
69  *
70  * @notapi
71  */
72 void hal_lld_init(void) {
73 
74 }
75 
76 #if defined(HAL_LLD_USE_CLOCK_MANAGEMENT) || defined(__DOXYGEN__)
77 /**
78  * @brief Switches to a different clock configuration
79  *
80  * @param[in] ccp pointer to clock a @p halclkcfg_t structure
81  * @return The clock switch result.
82  * @retval false if the clock switch succeeded
83  * @retval true if the clock switch failed
84  *
85  * @notapi
86  */
87 bool hal_lld_clock_switch_mode(const halclkcfg_t *ccp) {
88 
89  (void)ccp;
90 
91  return false;
92 }
93 
94 /**
95  * @brief Returns the frequency of a clock point in Hz.
96  *
97  * @param[in] clkpt clock point to be returned
98  * @return The clock point frequency in Hz or zero if the
99  * frequency is unknown.
100  *
101  * @notapi
102  */
103 halfreq_t hal_lld_get_clock_point(halclkpt_t clkpt) {
104 
105  (void)clkpt;
106 
107  return 0U;
108 }
109 #endif /* defined(HAL_LLD_USE_CLOCK_MANAGEMENT) */
110 
111 /** @} */
hal.h
HAL subsystem header.
hal_lld_get_clock_point
halfreq_t hal_lld_get_clock_point(halclkpt_t clkpt)
Returns the frequency of a clock point in Hz.
Definition: hal_lld.c:103
halfreq_t
uint32_t halfreq_t
Type of a clock point frequency in Hz.
Definition: hal_lld.h:78
hal_lld_clock_switch_mode
bool hal_lld_clock_switch_mode(const halclkcfg_t *ccp)
Switches to a different clock configuration.
Definition: hal_lld.c:87
hal_lld_init
void hal_lld_init(void)
Low level HAL driver initialization.
Definition: hal_lld.c:72
halclkcfg_t
Type of a clock configuration structure.
Definition: hal_lld.h:83
halclkpt_t
unsigned halclkpt_t
Type of a clock point identifier.
Definition: hal_lld.h:72