1 | /* mbed Microcontroller Library
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2 | * Copyright (c) 2018 ARM Limited
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3 | *
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | */
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16 | #include "hal/mbed_lp_ticker_wrapper.h"
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17 |
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18 | #if DEVICE_LPTICKER && (LPTICKER_DELAY_TICKS > 0)
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19 |
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20 | #include "hal/LowPowerTickerWrapper.h"
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21 | #include "platform/mbed_critical.h"
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22 |
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23 | // Do not use SingletonPtr since this must be initialized in a critical section
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24 | static LowPowerTickerWrapper *ticker_wrapper;
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25 | static uint64_t ticker_wrapper_data[(sizeof(LowPowerTickerWrapper) + 7) / 8];
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26 | static bool init = false;
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27 |
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28 | static void lp_ticker_wrapper_init()
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29 | {
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30 | ticker_wrapper->init();
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31 | }
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32 |
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33 | static uint32_t lp_ticker_wrapper_read()
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34 | {
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35 | return ticker_wrapper->read();
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36 | }
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37 |
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38 | static void lp_ticker_wrapper_set_interrupt(timestamp_t timestamp)
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39 | {
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40 | ticker_wrapper->set_interrupt(timestamp);
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41 | }
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42 |
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43 | static void lp_ticker_wrapper_disable_interrupt()
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44 | {
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45 | ticker_wrapper->disable_interrupt();
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46 | }
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47 |
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48 | static void lp_ticker_wrapper_clear_interrupt()
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49 | {
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50 | ticker_wrapper->clear_interrupt();
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51 | }
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52 |
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53 | static void lp_ticker_wrapper_fire_interrupt()
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54 | {
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55 | ticker_wrapper->fire_interrupt();
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56 | }
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57 |
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58 | static const ticker_info_t *lp_ticker_wrapper_get_info()
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59 | {
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60 | return ticker_wrapper->get_info();
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61 | }
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62 |
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63 | static void lp_ticker_wrapper_free()
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64 | {
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65 | ticker_wrapper->free();
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66 | }
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67 |
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68 | static const ticker_interface_t lp_interface = {
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69 | lp_ticker_wrapper_init,
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70 | lp_ticker_wrapper_read,
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71 | lp_ticker_wrapper_disable_interrupt,
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72 | lp_ticker_wrapper_clear_interrupt,
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73 | lp_ticker_wrapper_set_interrupt,
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74 | lp_ticker_wrapper_fire_interrupt,
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75 | lp_ticker_wrapper_free,
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76 | lp_ticker_wrapper_get_info
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77 | };
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78 |
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79 | void lp_ticker_wrapper_irq_handler(ticker_irq_handler_type handler)
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80 | {
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81 | core_util_critical_section_enter();
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82 |
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83 | if (!init) {
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84 | // Force ticker to initialize
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85 | get_lp_ticker_data();
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86 | }
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87 |
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88 | ticker_wrapper->irq_handler(handler);
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89 |
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90 | core_util_critical_section_exit();
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91 | }
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92 |
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93 | const ticker_data_t *get_lp_ticker_wrapper_data(const ticker_data_t *data)
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94 | {
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95 | core_util_critical_section_enter();
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96 |
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97 | if (!init) {
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98 | ticker_wrapper = new (ticker_wrapper_data) LowPowerTickerWrapper(data, &lp_interface, LPTICKER_DELAY_TICKS, LPTICKER_DELAY_TICKS);
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99 | init = true;
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100 | }
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101 |
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102 | core_util_critical_section_exit();
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103 |
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104 | return &ticker_wrapper->data;
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105 | }
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106 |
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107 | void lp_ticker_wrapper_suspend()
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108 | {
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109 | if (!init) {
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110 | // Force ticker to initialize
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111 | get_lp_ticker_data();
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112 | }
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113 |
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114 | ticker_wrapper->suspend();
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115 | }
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116 |
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117 | void lp_ticker_wrapper_resume()
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118 | {
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119 | if (!init) {
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120 | // Force ticker to initialize
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121 | get_lp_ticker_data();
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122 | }
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123 |
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124 | ticker_wrapper->resume();
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125 | }
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126 |
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127 | #endif
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