mbed library sources. Supersedes mbed-src.
Fork of mbed-dev by
targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/rtc/TARGET_SAMR21/rtc_count.c@144:423e1876dc07, 2016-08-02 (annotated)
- Committer:
- screamer
- Date:
- Tue Aug 02 14:07:36 2016 +0000
- Revision:
- 144:423e1876dc07
- Parent:
- 18:da299f395b9e
Added targets.json file for the supported targets in the release
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 15:a81a8d6c1dfe | 1 | /** |
mbed_official | 15:a81a8d6c1dfe | 2 | * \file |
mbed_official | 15:a81a8d6c1dfe | 3 | * |
mbed_official | 15:a81a8d6c1dfe | 4 | * \brief SAM RTC Driver (Count Mode) |
mbed_official | 15:a81a8d6c1dfe | 5 | * |
mbed_official | 15:a81a8d6c1dfe | 6 | * Copyright (C) 2012-2015 Atmel Corporation. All rights reserved. |
mbed_official | 15:a81a8d6c1dfe | 7 | * |
mbed_official | 15:a81a8d6c1dfe | 8 | * \asf_license_start |
mbed_official | 15:a81a8d6c1dfe | 9 | * |
mbed_official | 15:a81a8d6c1dfe | 10 | * \page License |
mbed_official | 15:a81a8d6c1dfe | 11 | * |
mbed_official | 15:a81a8d6c1dfe | 12 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 15:a81a8d6c1dfe | 13 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 15:a81a8d6c1dfe | 14 | * |
mbed_official | 15:a81a8d6c1dfe | 15 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 15:a81a8d6c1dfe | 16 | * this list of conditions and the following disclaimer. |
mbed_official | 15:a81a8d6c1dfe | 17 | * |
mbed_official | 15:a81a8d6c1dfe | 18 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 15:a81a8d6c1dfe | 19 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 15:a81a8d6c1dfe | 20 | * and/or other materials provided with the distribution. |
mbed_official | 15:a81a8d6c1dfe | 21 | * |
mbed_official | 15:a81a8d6c1dfe | 22 | * 3. The name of Atmel may not be used to endorse or promote products derived |
mbed_official | 15:a81a8d6c1dfe | 23 | * from this software without specific prior written permission. |
mbed_official | 15:a81a8d6c1dfe | 24 | * |
mbed_official | 15:a81a8d6c1dfe | 25 | * 4. This software may only be redistributed and used in connection with an |
mbed_official | 15:a81a8d6c1dfe | 26 | * Atmel microcontroller product. |
mbed_official | 15:a81a8d6c1dfe | 27 | * |
mbed_official | 15:a81a8d6c1dfe | 28 | * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED |
mbed_official | 15:a81a8d6c1dfe | 29 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
mbed_official | 15:a81a8d6c1dfe | 30 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE |
mbed_official | 15:a81a8d6c1dfe | 31 | * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR |
mbed_official | 15:a81a8d6c1dfe | 32 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 15:a81a8d6c1dfe | 33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
mbed_official | 15:a81a8d6c1dfe | 34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
mbed_official | 15:a81a8d6c1dfe | 35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
mbed_official | 15:a81a8d6c1dfe | 36 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
mbed_official | 15:a81a8d6c1dfe | 37 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
mbed_official | 15:a81a8d6c1dfe | 38 | * POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 15:a81a8d6c1dfe | 39 | * |
mbed_official | 15:a81a8d6c1dfe | 40 | * \asf_license_stop |
mbed_official | 15:a81a8d6c1dfe | 41 | * |
mbed_official | 15:a81a8d6c1dfe | 42 | */ |
mbed_official | 15:a81a8d6c1dfe | 43 | /* |
mbed_official | 15:a81a8d6c1dfe | 44 | * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> |
mbed_official | 15:a81a8d6c1dfe | 45 | */ |
mbed_official | 15:a81a8d6c1dfe | 46 | #include "rtc_count.h" |
mbed_official | 15:a81a8d6c1dfe | 47 | #include <gclk.h> |
mbed_official | 15:a81a8d6c1dfe | 48 | |
mbed_official | 15:a81a8d6c1dfe | 49 | #if !defined(__DOXYGEN__) |
mbed_official | 15:a81a8d6c1dfe | 50 | struct rtc_module *_rtc_instance[RTC_INST_NUM]; |
mbed_official | 15:a81a8d6c1dfe | 51 | #endif |
mbed_official | 15:a81a8d6c1dfe | 52 | |
mbed_official | 15:a81a8d6c1dfe | 53 | /** |
mbed_official | 15:a81a8d6c1dfe | 54 | * \brief Determines if the hardware module(s) are currently synchronizing to the bus. |
mbed_official | 15:a81a8d6c1dfe | 55 | * |
mbed_official | 15:a81a8d6c1dfe | 56 | * Checks to see if the underlying hardware peripheral module(s) are currently |
mbed_official | 15:a81a8d6c1dfe | 57 | * synchronizing across multiple clock domains to the hardware bus, This |
mbed_official | 15:a81a8d6c1dfe | 58 | * function can be used to delay further operations on a module until such time |
mbed_official | 15:a81a8d6c1dfe | 59 | * that it is ready, to prevent blocking delays for synchronization in the |
mbed_official | 15:a81a8d6c1dfe | 60 | * user application. |
mbed_official | 15:a81a8d6c1dfe | 61 | * |
mbed_official | 15:a81a8d6c1dfe | 62 | * \param[in] module RTC hardware module |
mbed_official | 15:a81a8d6c1dfe | 63 | * |
mbed_official | 15:a81a8d6c1dfe | 64 | * \return Synchronization status of the underlying hardware module(s). |
mbed_official | 15:a81a8d6c1dfe | 65 | * |
mbed_official | 15:a81a8d6c1dfe | 66 | * \retval true if the module synchronization is ongoing |
mbed_official | 15:a81a8d6c1dfe | 67 | * \retval false if the module has completed synchronization |
mbed_official | 15:a81a8d6c1dfe | 68 | */ |
mbed_official | 15:a81a8d6c1dfe | 69 | static bool rtc_count_is_syncing(struct rtc_module *const module) |
mbed_official | 15:a81a8d6c1dfe | 70 | { |
mbed_official | 15:a81a8d6c1dfe | 71 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 72 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 73 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 74 | |
mbed_official | 15:a81a8d6c1dfe | 75 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 76 | |
mbed_official | 15:a81a8d6c1dfe | 77 | if (rtc_module->MODE0.STATUS.reg & RTC_STATUS_SYNCBUSY) { |
mbed_official | 15:a81a8d6c1dfe | 78 | return true; |
mbed_official | 15:a81a8d6c1dfe | 79 | } |
mbed_official | 15:a81a8d6c1dfe | 80 | |
mbed_official | 15:a81a8d6c1dfe | 81 | return false; |
mbed_official | 15:a81a8d6c1dfe | 82 | } |
mbed_official | 15:a81a8d6c1dfe | 83 | |
mbed_official | 15:a81a8d6c1dfe | 84 | /** |
mbed_official | 15:a81a8d6c1dfe | 85 | * \brief Enables the RTC module. |
mbed_official | 15:a81a8d6c1dfe | 86 | * |
mbed_official | 15:a81a8d6c1dfe | 87 | * Enables the RTC module once it has been configured, ready for use. Most |
mbed_official | 15:a81a8d6c1dfe | 88 | * module configuration parameters cannot be altered while the module is enabled. |
mbed_official | 15:a81a8d6c1dfe | 89 | * |
mbed_official | 15:a81a8d6c1dfe | 90 | * \param[in,out] module RTC hardware module |
mbed_official | 15:a81a8d6c1dfe | 91 | */ |
mbed_official | 15:a81a8d6c1dfe | 92 | void rtc_count_enable(struct rtc_module *const module) |
mbed_official | 15:a81a8d6c1dfe | 93 | { |
mbed_official | 15:a81a8d6c1dfe | 94 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 95 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 96 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 97 | |
mbed_official | 15:a81a8d6c1dfe | 98 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 99 | |
mbed_official | 15:a81a8d6c1dfe | 100 | #if RTC_COUNT_ASYNC == true |
mbed_official | 15:a81a8d6c1dfe | 101 | system_interrupt_enable(SYSTEM_INTERRUPT_MODULE_RTC); |
mbed_official | 15:a81a8d6c1dfe | 102 | #endif |
mbed_official | 15:a81a8d6c1dfe | 103 | |
mbed_official | 15:a81a8d6c1dfe | 104 | while (rtc_count_is_syncing(module)) { |
mbed_official | 15:a81a8d6c1dfe | 105 | /* Wait for synchronization */ |
mbed_official | 15:a81a8d6c1dfe | 106 | } |
mbed_official | 15:a81a8d6c1dfe | 107 | |
mbed_official | 15:a81a8d6c1dfe | 108 | /* Enable RTC module. */ |
mbed_official | 15:a81a8d6c1dfe | 109 | rtc_module->MODE0.CTRL.reg |= RTC_MODE0_CTRL_ENABLE; |
mbed_official | 15:a81a8d6c1dfe | 110 | } |
mbed_official | 15:a81a8d6c1dfe | 111 | |
mbed_official | 15:a81a8d6c1dfe | 112 | /** |
mbed_official | 15:a81a8d6c1dfe | 113 | * \brief Disables the RTC module. |
mbed_official | 15:a81a8d6c1dfe | 114 | * |
mbed_official | 15:a81a8d6c1dfe | 115 | * Disables the RTC module. |
mbed_official | 15:a81a8d6c1dfe | 116 | * |
mbed_official | 15:a81a8d6c1dfe | 117 | * \param[in,out] module RTC hardware module |
mbed_official | 15:a81a8d6c1dfe | 118 | */ |
mbed_official | 15:a81a8d6c1dfe | 119 | void rtc_count_disable(struct rtc_module *const module) |
mbed_official | 15:a81a8d6c1dfe | 120 | { |
mbed_official | 15:a81a8d6c1dfe | 121 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 122 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 123 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 124 | |
mbed_official | 15:a81a8d6c1dfe | 125 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 126 | |
mbed_official | 15:a81a8d6c1dfe | 127 | #if RTC_COUNT_ASYNC == true |
mbed_official | 15:a81a8d6c1dfe | 128 | system_interrupt_disable(SYSTEM_INTERRUPT_MODULE_RTC); |
mbed_official | 15:a81a8d6c1dfe | 129 | #endif |
mbed_official | 15:a81a8d6c1dfe | 130 | |
mbed_official | 15:a81a8d6c1dfe | 131 | while (rtc_count_is_syncing(module)) { |
mbed_official | 15:a81a8d6c1dfe | 132 | /* Wait for synchronization */ |
mbed_official | 15:a81a8d6c1dfe | 133 | } |
mbed_official | 15:a81a8d6c1dfe | 134 | |
mbed_official | 15:a81a8d6c1dfe | 135 | /* Disable RTC module. */ |
mbed_official | 15:a81a8d6c1dfe | 136 | rtc_module->MODE0.CTRL.reg &= ~RTC_MODE0_CTRL_ENABLE; |
mbed_official | 15:a81a8d6c1dfe | 137 | } |
mbed_official | 15:a81a8d6c1dfe | 138 | |
mbed_official | 15:a81a8d6c1dfe | 139 | /** |
mbed_official | 15:a81a8d6c1dfe | 140 | * \brief Resets the RTC module. |
mbed_official | 15:a81a8d6c1dfe | 141 | * Resets the RTC to hardware defaults. |
mbed_official | 15:a81a8d6c1dfe | 142 | * |
mbed_official | 15:a81a8d6c1dfe | 143 | * \param[in,out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 144 | */ |
mbed_official | 15:a81a8d6c1dfe | 145 | void rtc_count_reset(struct rtc_module *const module) |
mbed_official | 15:a81a8d6c1dfe | 146 | { |
mbed_official | 15:a81a8d6c1dfe | 147 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 148 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 149 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 150 | |
mbed_official | 15:a81a8d6c1dfe | 151 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 152 | |
mbed_official | 15:a81a8d6c1dfe | 153 | /* Disable module before reset. */ |
mbed_official | 15:a81a8d6c1dfe | 154 | rtc_count_disable(module); |
mbed_official | 15:a81a8d6c1dfe | 155 | |
mbed_official | 15:a81a8d6c1dfe | 156 | #if RTC_COUNT_ASYNC == true |
mbed_official | 15:a81a8d6c1dfe | 157 | module->registered_callback = 0; |
mbed_official | 15:a81a8d6c1dfe | 158 | module->enabled_callback = 0; |
mbed_official | 15:a81a8d6c1dfe | 159 | #endif |
mbed_official | 15:a81a8d6c1dfe | 160 | |
mbed_official | 15:a81a8d6c1dfe | 161 | while (rtc_count_is_syncing(module)) { |
mbed_official | 15:a81a8d6c1dfe | 162 | /* Wait for synchronization */ |
mbed_official | 15:a81a8d6c1dfe | 163 | } |
mbed_official | 15:a81a8d6c1dfe | 164 | |
mbed_official | 15:a81a8d6c1dfe | 165 | /* Initiate software reset. */ |
mbed_official | 15:a81a8d6c1dfe | 166 | rtc_module->MODE0.CTRL.reg |= RTC_MODE0_CTRL_SWRST; |
mbed_official | 15:a81a8d6c1dfe | 167 | } |
mbed_official | 15:a81a8d6c1dfe | 168 | |
mbed_official | 15:a81a8d6c1dfe | 169 | /** |
mbed_official | 15:a81a8d6c1dfe | 170 | * \internal Applies the given configuration. |
mbed_official | 15:a81a8d6c1dfe | 171 | * |
mbed_official | 15:a81a8d6c1dfe | 172 | * Sets the configurations given from the configuration structure to the |
mbed_official | 15:a81a8d6c1dfe | 173 | * hardware module. |
mbed_official | 15:a81a8d6c1dfe | 174 | * |
mbed_official | 15:a81a8d6c1dfe | 175 | * \param[in,out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 176 | * \param[in] config Pointer to the configuration structure. |
mbed_official | 15:a81a8d6c1dfe | 177 | * |
mbed_official | 15:a81a8d6c1dfe | 178 | * \return Status of the configuration procedure. |
mbed_official | 15:a81a8d6c1dfe | 179 | * \retval STATUS_OK RTC configurations was set successfully. |
mbed_official | 15:a81a8d6c1dfe | 180 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were given. |
mbed_official | 15:a81a8d6c1dfe | 181 | */ |
mbed_official | 15:a81a8d6c1dfe | 182 | static enum status_code _rtc_count_set_config( |
mbed_official | 15:a81a8d6c1dfe | 183 | struct rtc_module *const module, |
mbed_official | 15:a81a8d6c1dfe | 184 | const struct rtc_count_config *const config) |
mbed_official | 15:a81a8d6c1dfe | 185 | { |
mbed_official | 15:a81a8d6c1dfe | 186 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 187 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 188 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 189 | |
mbed_official | 15:a81a8d6c1dfe | 190 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 191 | |
mbed_official | 15:a81a8d6c1dfe | 192 | rtc_module->MODE0.CTRL.reg = RTC_MODE0_CTRL_MODE(0) | config->prescaler; |
mbed_official | 15:a81a8d6c1dfe | 193 | |
mbed_official | 15:a81a8d6c1dfe | 194 | /* Set mode and clear on match if applicable. */ |
mbed_official | 15:a81a8d6c1dfe | 195 | switch (config->mode) { |
mbed_official | 15:a81a8d6c1dfe | 196 | case RTC_COUNT_MODE_32BIT: |
mbed_official | 15:a81a8d6c1dfe | 197 | /* Set 32bit mode and clear on match if applicable. */ |
mbed_official | 15:a81a8d6c1dfe | 198 | rtc_module->MODE0.CTRL.reg |= RTC_MODE0_CTRL_MODE(0); |
mbed_official | 15:a81a8d6c1dfe | 199 | |
mbed_official | 15:a81a8d6c1dfe | 200 | /* Check if clear on compare match should be set. */ |
mbed_official | 15:a81a8d6c1dfe | 201 | if (config->clear_on_match) { |
mbed_official | 15:a81a8d6c1dfe | 202 | /* Set clear on match. */ |
mbed_official | 15:a81a8d6c1dfe | 203 | rtc_module->MODE0.CTRL.reg |= RTC_MODE0_CTRL_MATCHCLR; |
mbed_official | 15:a81a8d6c1dfe | 204 | } |
mbed_official | 15:a81a8d6c1dfe | 205 | /* Set compare values. */ |
mbed_official | 15:a81a8d6c1dfe | 206 | for (uint8_t i = 0; i < RTC_NUM_OF_COMP32; i++) { |
mbed_official | 15:a81a8d6c1dfe | 207 | while (rtc_count_is_syncing(module)) { |
mbed_official | 15:a81a8d6c1dfe | 208 | /* Wait for synchronization */ |
mbed_official | 15:a81a8d6c1dfe | 209 | } |
mbed_official | 15:a81a8d6c1dfe | 210 | |
mbed_official | 15:a81a8d6c1dfe | 211 | rtc_count_set_compare(module, config->compare_values[i], |
mbed_official | 15:a81a8d6c1dfe | 212 | (enum rtc_count_compare)i); |
mbed_official | 15:a81a8d6c1dfe | 213 | } |
mbed_official | 15:a81a8d6c1dfe | 214 | break; |
mbed_official | 15:a81a8d6c1dfe | 215 | |
mbed_official | 15:a81a8d6c1dfe | 216 | case RTC_COUNT_MODE_16BIT: |
mbed_official | 15:a81a8d6c1dfe | 217 | /* Set 16bit mode. */ |
mbed_official | 15:a81a8d6c1dfe | 218 | rtc_module->MODE1.CTRL.reg |= RTC_MODE1_CTRL_MODE(1); |
mbed_official | 15:a81a8d6c1dfe | 219 | |
mbed_official | 15:a81a8d6c1dfe | 220 | /* Check if match on clear is set, and return invalid |
mbed_official | 15:a81a8d6c1dfe | 221 | * argument if set. */ |
mbed_official | 15:a81a8d6c1dfe | 222 | if (config->clear_on_match) { |
mbed_official | 15:a81a8d6c1dfe | 223 | Assert(false); |
mbed_official | 15:a81a8d6c1dfe | 224 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 225 | } |
mbed_official | 15:a81a8d6c1dfe | 226 | /* Set compare values. */ |
mbed_official | 15:a81a8d6c1dfe | 227 | for (uint8_t i = 0; i < RTC_NUM_OF_COMP16; i++) { |
mbed_official | 15:a81a8d6c1dfe | 228 | while (rtc_count_is_syncing(module)) { |
mbed_official | 15:a81a8d6c1dfe | 229 | /* Wait for synchronization */ |
mbed_official | 15:a81a8d6c1dfe | 230 | } |
mbed_official | 15:a81a8d6c1dfe | 231 | |
mbed_official | 15:a81a8d6c1dfe | 232 | rtc_count_set_compare(module, config->compare_values[i], |
mbed_official | 15:a81a8d6c1dfe | 233 | (enum rtc_count_compare)i); |
mbed_official | 15:a81a8d6c1dfe | 234 | } |
mbed_official | 15:a81a8d6c1dfe | 235 | break; |
mbed_official | 15:a81a8d6c1dfe | 236 | default: |
mbed_official | 15:a81a8d6c1dfe | 237 | Assert(false); |
mbed_official | 15:a81a8d6c1dfe | 238 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 239 | } |
mbed_official | 15:a81a8d6c1dfe | 240 | |
mbed_official | 15:a81a8d6c1dfe | 241 | /* Check to set continuously clock read update mode. */ |
mbed_official | 15:a81a8d6c1dfe | 242 | if (config->continuously_update) { |
mbed_official | 15:a81a8d6c1dfe | 243 | /* Set continuously mode. */ |
mbed_official | 15:a81a8d6c1dfe | 244 | rtc_module->MODE0.READREQ.reg |= RTC_READREQ_RCONT; |
mbed_official | 15:a81a8d6c1dfe | 245 | } |
mbed_official | 15:a81a8d6c1dfe | 246 | |
mbed_official | 15:a81a8d6c1dfe | 247 | /* Return status OK if everything was configured. */ |
mbed_official | 15:a81a8d6c1dfe | 248 | return STATUS_OK; |
mbed_official | 15:a81a8d6c1dfe | 249 | } |
mbed_official | 15:a81a8d6c1dfe | 250 | |
mbed_official | 15:a81a8d6c1dfe | 251 | /** |
mbed_official | 15:a81a8d6c1dfe | 252 | * \brief Initializes the RTC module with given configurations. |
mbed_official | 15:a81a8d6c1dfe | 253 | * |
mbed_official | 15:a81a8d6c1dfe | 254 | * Initializes the module, setting up all given configurations to provide |
mbed_official | 15:a81a8d6c1dfe | 255 | * the desired functionality of the RTC. |
mbed_official | 15:a81a8d6c1dfe | 256 | * |
mbed_official | 15:a81a8d6c1dfe | 257 | * \param[out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 258 | * \param[in] hw Pointer to hardware instance |
mbed_official | 15:a81a8d6c1dfe | 259 | * \param[in] config Pointer to the configuration structure |
mbed_official | 15:a81a8d6c1dfe | 260 | * |
mbed_official | 15:a81a8d6c1dfe | 261 | * \return Status of the initialization procedure. |
mbed_official | 15:a81a8d6c1dfe | 262 | * \retval STATUS_OK If the initialization was run stressfully |
mbed_official | 15:a81a8d6c1dfe | 263 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were given |
mbed_official | 15:a81a8d6c1dfe | 264 | */ |
mbed_official | 15:a81a8d6c1dfe | 265 | enum status_code rtc_count_init( |
mbed_official | 15:a81a8d6c1dfe | 266 | struct rtc_module *const module, |
mbed_official | 15:a81a8d6c1dfe | 267 | Rtc *const hw, |
mbed_official | 15:a81a8d6c1dfe | 268 | const struct rtc_count_config *const config) |
mbed_official | 15:a81a8d6c1dfe | 269 | { |
mbed_official | 15:a81a8d6c1dfe | 270 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 271 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 272 | Assert(hw); |
mbed_official | 15:a81a8d6c1dfe | 273 | Assert(config); |
mbed_official | 15:a81a8d6c1dfe | 274 | |
mbed_official | 15:a81a8d6c1dfe | 275 | /* Initialize device instance */ |
mbed_official | 15:a81a8d6c1dfe | 276 | module->hw = hw; |
mbed_official | 15:a81a8d6c1dfe | 277 | |
mbed_official | 15:a81a8d6c1dfe | 278 | /* Turn on the digital interface clock */ |
mbed_official | 15:a81a8d6c1dfe | 279 | system_apb_clock_set_mask(SYSTEM_CLOCK_APB_APBA, PM_APBAMASK_RTC); |
mbed_official | 15:a81a8d6c1dfe | 280 | |
mbed_official | 15:a81a8d6c1dfe | 281 | /* Set up GCLK */ |
mbed_official | 15:a81a8d6c1dfe | 282 | struct system_gclk_chan_config gclk_chan_conf; |
mbed_official | 15:a81a8d6c1dfe | 283 | system_gclk_chan_get_config_defaults(&gclk_chan_conf); |
mbed_official | 15:a81a8d6c1dfe | 284 | gclk_chan_conf.source_generator = GCLK_GENERATOR_2; |
mbed_official | 15:a81a8d6c1dfe | 285 | system_gclk_chan_set_config(RTC_GCLK_ID, &gclk_chan_conf); |
mbed_official | 15:a81a8d6c1dfe | 286 | system_gclk_chan_enable(RTC_GCLK_ID); |
mbed_official | 15:a81a8d6c1dfe | 287 | |
mbed_official | 15:a81a8d6c1dfe | 288 | /* Reset module to hardware defaults. */ |
mbed_official | 15:a81a8d6c1dfe | 289 | rtc_count_reset(module); |
mbed_official | 15:a81a8d6c1dfe | 290 | |
mbed_official | 15:a81a8d6c1dfe | 291 | /* Save conf_struct internally for continued use. */ |
mbed_official | 15:a81a8d6c1dfe | 292 | module->mode = config->mode; |
mbed_official | 15:a81a8d6c1dfe | 293 | module->continuously_update = config->continuously_update; |
mbed_official | 15:a81a8d6c1dfe | 294 | |
mbed_official | 15:a81a8d6c1dfe | 295 | # if (RTC_INST_NUM == 1) |
mbed_official | 15:a81a8d6c1dfe | 296 | _rtc_instance[0] = module; |
mbed_official | 15:a81a8d6c1dfe | 297 | # else |
mbed_official | 15:a81a8d6c1dfe | 298 | /* Register this instance for callbacks*/ |
mbed_official | 15:a81a8d6c1dfe | 299 | _rtc_instance[_rtc_get_inst_index(hw)] = module; |
mbed_official | 15:a81a8d6c1dfe | 300 | # endif |
mbed_official | 15:a81a8d6c1dfe | 301 | |
mbed_official | 15:a81a8d6c1dfe | 302 | /* Set config and return status. */ |
mbed_official | 15:a81a8d6c1dfe | 303 | return _rtc_count_set_config(module, config); |
mbed_official | 15:a81a8d6c1dfe | 304 | } |
mbed_official | 15:a81a8d6c1dfe | 305 | |
mbed_official | 15:a81a8d6c1dfe | 306 | /** |
mbed_official | 15:a81a8d6c1dfe | 307 | * \brief Set the current count value to desired value. |
mbed_official | 15:a81a8d6c1dfe | 308 | * |
mbed_official | 15:a81a8d6c1dfe | 309 | * Sets the value of the counter to the specified value. |
mbed_official | 15:a81a8d6c1dfe | 310 | * |
mbed_official | 15:a81a8d6c1dfe | 311 | * \param[in,out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 312 | * \param[in] count_value The value to be set in count register |
mbed_official | 15:a81a8d6c1dfe | 313 | * |
mbed_official | 15:a81a8d6c1dfe | 314 | * \return Status of setting the register. |
mbed_official | 15:a81a8d6c1dfe | 315 | * \retval STATUS_OK If everything was executed correctly |
mbed_official | 15:a81a8d6c1dfe | 316 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were provided |
mbed_official | 15:a81a8d6c1dfe | 317 | */ |
mbed_official | 15:a81a8d6c1dfe | 318 | enum status_code rtc_count_set_count( |
mbed_official | 15:a81a8d6c1dfe | 319 | struct rtc_module *const module, |
mbed_official | 15:a81a8d6c1dfe | 320 | const uint32_t count_value) |
mbed_official | 15:a81a8d6c1dfe | 321 | { |
mbed_official | 15:a81a8d6c1dfe | 322 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 323 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 324 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 325 | |
mbed_official | 15:a81a8d6c1dfe | 326 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 327 | |
mbed_official | 15:a81a8d6c1dfe | 328 | while (rtc_count_is_syncing(module)) { |
mbed_official | 15:a81a8d6c1dfe | 329 | /* Wait for synchronization */ |
mbed_official | 15:a81a8d6c1dfe | 330 | } |
mbed_official | 15:a81a8d6c1dfe | 331 | |
mbed_official | 15:a81a8d6c1dfe | 332 | /* Set count according to mode */ |
mbed_official | 15:a81a8d6c1dfe | 333 | switch(module->mode) { |
mbed_official | 15:a81a8d6c1dfe | 334 | case RTC_COUNT_MODE_32BIT: |
mbed_official | 15:a81a8d6c1dfe | 335 | /* Write value to register. */ |
mbed_official | 15:a81a8d6c1dfe | 336 | rtc_module->MODE0.COUNT.reg = count_value; |
mbed_official | 15:a81a8d6c1dfe | 337 | |
mbed_official | 15:a81a8d6c1dfe | 338 | break; |
mbed_official | 15:a81a8d6c1dfe | 339 | |
mbed_official | 15:a81a8d6c1dfe | 340 | case RTC_COUNT_MODE_16BIT: |
mbed_official | 15:a81a8d6c1dfe | 341 | /* Check if 16-bit value is provided. */ |
mbed_official | 15:a81a8d6c1dfe | 342 | if(count_value > 0xffff) { |
mbed_official | 15:a81a8d6c1dfe | 343 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 344 | } |
mbed_official | 15:a81a8d6c1dfe | 345 | |
mbed_official | 15:a81a8d6c1dfe | 346 | /* Write value to register. */ |
mbed_official | 15:a81a8d6c1dfe | 347 | rtc_module->MODE1.COUNT.reg = (uint32_t)count_value; |
mbed_official | 15:a81a8d6c1dfe | 348 | |
mbed_official | 15:a81a8d6c1dfe | 349 | break; |
mbed_official | 15:a81a8d6c1dfe | 350 | |
mbed_official | 15:a81a8d6c1dfe | 351 | default: |
mbed_official | 15:a81a8d6c1dfe | 352 | Assert(false); |
mbed_official | 15:a81a8d6c1dfe | 353 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 354 | } |
mbed_official | 15:a81a8d6c1dfe | 355 | return STATUS_OK; |
mbed_official | 15:a81a8d6c1dfe | 356 | } |
mbed_official | 15:a81a8d6c1dfe | 357 | |
mbed_official | 15:a81a8d6c1dfe | 358 | /** |
mbed_official | 15:a81a8d6c1dfe | 359 | * \brief Get the current count value. |
mbed_official | 15:a81a8d6c1dfe | 360 | * |
mbed_official | 15:a81a8d6c1dfe | 361 | * \param[in,out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 362 | * |
mbed_official | 15:a81a8d6c1dfe | 363 | * Returns the current count value. |
mbed_official | 15:a81a8d6c1dfe | 364 | * |
mbed_official | 15:a81a8d6c1dfe | 365 | * \return The current counter value as a 32-bit unsigned integer. |
mbed_official | 15:a81a8d6c1dfe | 366 | */ |
mbed_official | 15:a81a8d6c1dfe | 367 | uint32_t rtc_count_get_count(struct rtc_module *const module) |
mbed_official | 15:a81a8d6c1dfe | 368 | { |
mbed_official | 15:a81a8d6c1dfe | 369 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 370 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 371 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 372 | |
mbed_official | 15:a81a8d6c1dfe | 373 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 374 | |
mbed_official | 15:a81a8d6c1dfe | 375 | /* Initialize return value. */ |
mbed_official | 15:a81a8d6c1dfe | 376 | uint32_t ret_val; |
mbed_official | 15:a81a8d6c1dfe | 377 | |
mbed_official | 15:a81a8d6c1dfe | 378 | /* Change of read method based on value of continuously_update value in |
mbed_official | 15:a81a8d6c1dfe | 379 | * the configuration structure. */ |
mbed_official | 15:a81a8d6c1dfe | 380 | if(!(module->continuously_update)) { |
mbed_official | 15:a81a8d6c1dfe | 381 | /* Request read on count register. */ |
mbed_official | 15:a81a8d6c1dfe | 382 | rtc_module->MODE0.READREQ.reg = RTC_READREQ_RREQ; |
mbed_official | 15:a81a8d6c1dfe | 383 | |
mbed_official | 15:a81a8d6c1dfe | 384 | while (rtc_count_is_syncing(module)) { |
mbed_official | 15:a81a8d6c1dfe | 385 | /* Wait for synchronization */ |
mbed_official | 15:a81a8d6c1dfe | 386 | } |
mbed_official | 15:a81a8d6c1dfe | 387 | } |
mbed_official | 15:a81a8d6c1dfe | 388 | |
mbed_official | 15:a81a8d6c1dfe | 389 | /* Read value based on mode. */ |
mbed_official | 15:a81a8d6c1dfe | 390 | switch (module->mode) { |
mbed_official | 15:a81a8d6c1dfe | 391 | case RTC_COUNT_MODE_32BIT: |
mbed_official | 15:a81a8d6c1dfe | 392 | /* Return count value in 32-bit mode. */ |
mbed_official | 15:a81a8d6c1dfe | 393 | ret_val = rtc_module->MODE0.COUNT.reg; |
mbed_official | 15:a81a8d6c1dfe | 394 | |
mbed_official | 15:a81a8d6c1dfe | 395 | break; |
mbed_official | 15:a81a8d6c1dfe | 396 | |
mbed_official | 15:a81a8d6c1dfe | 397 | case RTC_COUNT_MODE_16BIT: |
mbed_official | 15:a81a8d6c1dfe | 398 | /* Return count value in 16-bit mode. */ |
mbed_official | 15:a81a8d6c1dfe | 399 | ret_val = (uint32_t)rtc_module->MODE1.COUNT.reg; |
mbed_official | 15:a81a8d6c1dfe | 400 | |
mbed_official | 15:a81a8d6c1dfe | 401 | break; |
mbed_official | 15:a81a8d6c1dfe | 402 | |
mbed_official | 15:a81a8d6c1dfe | 403 | default: |
mbed_official | 15:a81a8d6c1dfe | 404 | Assert(false); |
mbed_official | 15:a81a8d6c1dfe | 405 | /* Counter not initialized. Assume counter value 0.*/ |
mbed_official | 15:a81a8d6c1dfe | 406 | ret_val = 0; |
mbed_official | 15:a81a8d6c1dfe | 407 | break; |
mbed_official | 15:a81a8d6c1dfe | 408 | } |
mbed_official | 15:a81a8d6c1dfe | 409 | |
mbed_official | 15:a81a8d6c1dfe | 410 | return ret_val; |
mbed_official | 15:a81a8d6c1dfe | 411 | } |
mbed_official | 15:a81a8d6c1dfe | 412 | |
mbed_official | 15:a81a8d6c1dfe | 413 | /** |
mbed_official | 15:a81a8d6c1dfe | 414 | * \brief Set the compare value for the specified compare. |
mbed_official | 15:a81a8d6c1dfe | 415 | * |
mbed_official | 15:a81a8d6c1dfe | 416 | * Sets the value specified by the implementer to the requested compare. |
mbed_official | 15:a81a8d6c1dfe | 417 | * |
mbed_official | 15:a81a8d6c1dfe | 418 | * \note Compare 4 and 5 are only available in 16-bit mode. |
mbed_official | 15:a81a8d6c1dfe | 419 | * |
mbed_official | 15:a81a8d6c1dfe | 420 | * \param[in,out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 421 | * \param[in] comp_value The value to be written to the compare |
mbed_official | 15:a81a8d6c1dfe | 422 | * \param[in] comp_index Index of the compare to set |
mbed_official | 15:a81a8d6c1dfe | 423 | * |
mbed_official | 15:a81a8d6c1dfe | 424 | * \return Status indicating if compare was successfully set. |
mbed_official | 15:a81a8d6c1dfe | 425 | * \retval STATUS_OK If compare was successfully set |
mbed_official | 15:a81a8d6c1dfe | 426 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were provided |
mbed_official | 15:a81a8d6c1dfe | 427 | * \retval STATUS_ERR_BAD_FORMAT If the module was not initialized in a mode |
mbed_official | 15:a81a8d6c1dfe | 428 | */ |
mbed_official | 15:a81a8d6c1dfe | 429 | enum status_code rtc_count_set_compare( |
mbed_official | 15:a81a8d6c1dfe | 430 | struct rtc_module *const module, |
mbed_official | 15:a81a8d6c1dfe | 431 | const uint32_t comp_value, |
mbed_official | 15:a81a8d6c1dfe | 432 | const enum rtc_count_compare comp_index) |
mbed_official | 15:a81a8d6c1dfe | 433 | { |
mbed_official | 15:a81a8d6c1dfe | 434 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 435 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 436 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 437 | |
mbed_official | 15:a81a8d6c1dfe | 438 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 439 | |
mbed_official | 15:a81a8d6c1dfe | 440 | while (rtc_count_is_syncing(module)) { |
mbed_official | 15:a81a8d6c1dfe | 441 | /* Wait for synchronization */ |
mbed_official | 15:a81a8d6c1dfe | 442 | } |
mbed_official | 15:a81a8d6c1dfe | 443 | |
mbed_official | 15:a81a8d6c1dfe | 444 | /* Set compare values based on operation mode. */ |
mbed_official | 15:a81a8d6c1dfe | 445 | switch (module->mode) { |
mbed_official | 15:a81a8d6c1dfe | 446 | case RTC_COUNT_MODE_32BIT: |
mbed_official | 15:a81a8d6c1dfe | 447 | /* Check sanity of comp_index. */ |
mbed_official | 15:a81a8d6c1dfe | 448 | if ((uint32_t)comp_index > RTC_NUM_OF_COMP32) { |
mbed_official | 15:a81a8d6c1dfe | 449 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 450 | } |
mbed_official | 15:a81a8d6c1dfe | 451 | |
mbed_official | 15:a81a8d6c1dfe | 452 | /* Set compare value for COMP. */ |
mbed_official | 15:a81a8d6c1dfe | 453 | rtc_module->MODE0.COMP[comp_index].reg = comp_value; |
mbed_official | 15:a81a8d6c1dfe | 454 | |
mbed_official | 15:a81a8d6c1dfe | 455 | break; |
mbed_official | 15:a81a8d6c1dfe | 456 | |
mbed_official | 15:a81a8d6c1dfe | 457 | case RTC_COUNT_MODE_16BIT: |
mbed_official | 15:a81a8d6c1dfe | 458 | /* Check sanity of comp_index. */ |
mbed_official | 15:a81a8d6c1dfe | 459 | if ((uint32_t)comp_index > RTC_NUM_OF_COMP16) { |
mbed_official | 15:a81a8d6c1dfe | 460 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 461 | } |
mbed_official | 15:a81a8d6c1dfe | 462 | |
mbed_official | 15:a81a8d6c1dfe | 463 | /* Check that 16-bit value is provided. */ |
mbed_official | 15:a81a8d6c1dfe | 464 | if (comp_value > 0xffff) { |
mbed_official | 15:a81a8d6c1dfe | 465 | Assert(false); |
mbed_official | 15:a81a8d6c1dfe | 466 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 467 | } |
mbed_official | 15:a81a8d6c1dfe | 468 | |
mbed_official | 15:a81a8d6c1dfe | 469 | /* Set compare value for COMP. */ |
mbed_official | 15:a81a8d6c1dfe | 470 | rtc_module->MODE1.COMP[comp_index].reg = comp_value & 0xffff; |
mbed_official | 15:a81a8d6c1dfe | 471 | |
mbed_official | 15:a81a8d6c1dfe | 472 | break; |
mbed_official | 15:a81a8d6c1dfe | 473 | |
mbed_official | 15:a81a8d6c1dfe | 474 | default: |
mbed_official | 15:a81a8d6c1dfe | 475 | Assert(false); |
mbed_official | 15:a81a8d6c1dfe | 476 | return STATUS_ERR_BAD_FORMAT; |
mbed_official | 15:a81a8d6c1dfe | 477 | } |
mbed_official | 15:a81a8d6c1dfe | 478 | |
mbed_official | 15:a81a8d6c1dfe | 479 | /* Return status if everything is OK. */ |
mbed_official | 15:a81a8d6c1dfe | 480 | return STATUS_OK; |
mbed_official | 15:a81a8d6c1dfe | 481 | } |
mbed_official | 15:a81a8d6c1dfe | 482 | |
mbed_official | 15:a81a8d6c1dfe | 483 | /** |
mbed_official | 15:a81a8d6c1dfe | 484 | * \brief Get the current compare value of specified compare. |
mbed_official | 15:a81a8d6c1dfe | 485 | * |
mbed_official | 15:a81a8d6c1dfe | 486 | * Retrieves the current value of the specified compare. |
mbed_official | 15:a81a8d6c1dfe | 487 | * |
mbed_official | 15:a81a8d6c1dfe | 488 | * \note Compare 4 and 5 are only available in 16-bit mode. |
mbed_official | 15:a81a8d6c1dfe | 489 | * |
mbed_official | 15:a81a8d6c1dfe | 490 | * \param[in,out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 491 | * \param[out] comp_value Pointer to 32-bit integer that will be populated with |
mbed_official | 15:a81a8d6c1dfe | 492 | * the current compare value |
mbed_official | 15:a81a8d6c1dfe | 493 | * \param[in] comp_index Index of compare to check |
mbed_official | 15:a81a8d6c1dfe | 494 | * |
mbed_official | 15:a81a8d6c1dfe | 495 | * \return Status of the reading procedure. |
mbed_official | 15:a81a8d6c1dfe | 496 | * \retval STATUS_OK If the value was read correctly |
mbed_official | 15:a81a8d6c1dfe | 497 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were provided |
mbed_official | 15:a81a8d6c1dfe | 498 | * \retval STATUS_ERR_BAD_FORMAT If the module was not initialized in a mode |
mbed_official | 15:a81a8d6c1dfe | 499 | */ |
mbed_official | 15:a81a8d6c1dfe | 500 | enum status_code rtc_count_get_compare( |
mbed_official | 15:a81a8d6c1dfe | 501 | struct rtc_module *const module, |
mbed_official | 15:a81a8d6c1dfe | 502 | uint32_t *const comp_value, |
mbed_official | 15:a81a8d6c1dfe | 503 | const enum rtc_count_compare comp_index) |
mbed_official | 15:a81a8d6c1dfe | 504 | { |
mbed_official | 15:a81a8d6c1dfe | 505 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 506 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 507 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 508 | |
mbed_official | 15:a81a8d6c1dfe | 509 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 510 | |
mbed_official | 15:a81a8d6c1dfe | 511 | switch (module->mode) { |
mbed_official | 15:a81a8d6c1dfe | 512 | case RTC_COUNT_MODE_32BIT: |
mbed_official | 15:a81a8d6c1dfe | 513 | /* Check sanity of comp_index. */ |
mbed_official | 15:a81a8d6c1dfe | 514 | if ((uint32_t)comp_index > RTC_NUM_OF_COMP32) { |
mbed_official | 15:a81a8d6c1dfe | 515 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 516 | } |
mbed_official | 15:a81a8d6c1dfe | 517 | |
mbed_official | 15:a81a8d6c1dfe | 518 | /* Get compare value for COMP. */ |
mbed_official | 15:a81a8d6c1dfe | 519 | *comp_value = rtc_module->MODE0.COMP[comp_index].reg; |
mbed_official | 15:a81a8d6c1dfe | 520 | |
mbed_official | 15:a81a8d6c1dfe | 521 | break; |
mbed_official | 15:a81a8d6c1dfe | 522 | |
mbed_official | 15:a81a8d6c1dfe | 523 | case RTC_COUNT_MODE_16BIT: |
mbed_official | 15:a81a8d6c1dfe | 524 | /* Check sanity of comp_index. */ |
mbed_official | 15:a81a8d6c1dfe | 525 | if ((uint32_t)comp_index > RTC_NUM_OF_COMP16) { |
mbed_official | 15:a81a8d6c1dfe | 526 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 527 | } |
mbed_official | 15:a81a8d6c1dfe | 528 | |
mbed_official | 15:a81a8d6c1dfe | 529 | /* Get compare value for COMP. */ |
mbed_official | 15:a81a8d6c1dfe | 530 | *comp_value = (uint32_t)rtc_module->MODE1.COMP[comp_index].reg; |
mbed_official | 15:a81a8d6c1dfe | 531 | |
mbed_official | 15:a81a8d6c1dfe | 532 | break; |
mbed_official | 15:a81a8d6c1dfe | 533 | |
mbed_official | 15:a81a8d6c1dfe | 534 | default: |
mbed_official | 15:a81a8d6c1dfe | 535 | Assert(false); |
mbed_official | 15:a81a8d6c1dfe | 536 | return STATUS_ERR_BAD_FORMAT; |
mbed_official | 15:a81a8d6c1dfe | 537 | } |
mbed_official | 15:a81a8d6c1dfe | 538 | /* Return status showing everything is OK. */ |
mbed_official | 15:a81a8d6c1dfe | 539 | return STATUS_OK; |
mbed_official | 15:a81a8d6c1dfe | 540 | } |
mbed_official | 15:a81a8d6c1dfe | 541 | |
mbed_official | 15:a81a8d6c1dfe | 542 | /** |
mbed_official | 15:a81a8d6c1dfe | 543 | * \brief Retrieves the value of period. |
mbed_official | 15:a81a8d6c1dfe | 544 | * |
mbed_official | 15:a81a8d6c1dfe | 545 | * Retrieves the value of the period for the 16-bit mode counter. |
mbed_official | 15:a81a8d6c1dfe | 546 | * |
mbed_official | 15:a81a8d6c1dfe | 547 | * \note Only available in 16-bit mode. |
mbed_official | 15:a81a8d6c1dfe | 548 | * |
mbed_official | 15:a81a8d6c1dfe | 549 | * \param[in,out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 550 | * \param[out] period_value Pointer to value for return argument |
mbed_official | 15:a81a8d6c1dfe | 551 | * |
mbed_official | 15:a81a8d6c1dfe | 552 | * \return Status of getting the period value. |
mbed_official | 15:a81a8d6c1dfe | 553 | * \retval STATUS_OK If the period value was read correctly |
mbed_official | 15:a81a8d6c1dfe | 554 | * \retval STATUS_ERR_UNSUPPORTED_DEV If incorrect mode was set |
mbed_official | 15:a81a8d6c1dfe | 555 | */ |
mbed_official | 15:a81a8d6c1dfe | 556 | enum status_code rtc_count_get_period( |
mbed_official | 15:a81a8d6c1dfe | 557 | struct rtc_module *const module, |
mbed_official | 15:a81a8d6c1dfe | 558 | uint16_t *const period_value) |
mbed_official | 15:a81a8d6c1dfe | 559 | { |
mbed_official | 15:a81a8d6c1dfe | 560 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 561 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 562 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 563 | |
mbed_official | 15:a81a8d6c1dfe | 564 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 565 | |
mbed_official | 15:a81a8d6c1dfe | 566 | /* Check that correct mode is set. */ |
mbed_official | 15:a81a8d6c1dfe | 567 | if (module->mode != RTC_COUNT_MODE_16BIT) { |
mbed_official | 15:a81a8d6c1dfe | 568 | return STATUS_ERR_UNSUPPORTED_DEV; |
mbed_official | 15:a81a8d6c1dfe | 569 | } |
mbed_official | 15:a81a8d6c1dfe | 570 | |
mbed_official | 15:a81a8d6c1dfe | 571 | /* Returns the value. */ |
mbed_official | 15:a81a8d6c1dfe | 572 | *period_value = rtc_module->MODE1.PER.reg; |
mbed_official | 15:a81a8d6c1dfe | 573 | |
mbed_official | 15:a81a8d6c1dfe | 574 | return STATUS_OK; |
mbed_official | 15:a81a8d6c1dfe | 575 | } |
mbed_official | 15:a81a8d6c1dfe | 576 | |
mbed_official | 15:a81a8d6c1dfe | 577 | /** |
mbed_official | 15:a81a8d6c1dfe | 578 | * \brief Set the given value to the period. |
mbed_official | 15:a81a8d6c1dfe | 579 | * |
mbed_official | 15:a81a8d6c1dfe | 580 | * Sets the given value to the period. |
mbed_official | 15:a81a8d6c1dfe | 581 | * |
mbed_official | 15:a81a8d6c1dfe | 582 | * \note Only available in 16-bit mode. |
mbed_official | 15:a81a8d6c1dfe | 583 | * |
mbed_official | 15:a81a8d6c1dfe | 584 | * \param[in,out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 585 | * \param[in] period_value The value to set to the period |
mbed_official | 15:a81a8d6c1dfe | 586 | * |
mbed_official | 15:a81a8d6c1dfe | 587 | * \return Status of setting the period value. |
mbed_official | 15:a81a8d6c1dfe | 588 | * \retval STATUS_OK If the period was set correctly |
mbed_official | 15:a81a8d6c1dfe | 589 | * \retval STATUS_ERR_UNSUPPORTED_DEV If module is not operated in 16-bit mode |
mbed_official | 15:a81a8d6c1dfe | 590 | */ |
mbed_official | 15:a81a8d6c1dfe | 591 | enum status_code rtc_count_set_period( |
mbed_official | 15:a81a8d6c1dfe | 592 | struct rtc_module *const module, |
mbed_official | 15:a81a8d6c1dfe | 593 | const uint16_t period_value) |
mbed_official | 15:a81a8d6c1dfe | 594 | { |
mbed_official | 15:a81a8d6c1dfe | 595 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 596 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 597 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 598 | |
mbed_official | 15:a81a8d6c1dfe | 599 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 600 | |
mbed_official | 15:a81a8d6c1dfe | 601 | /* Check that correct mode is set. */ |
mbed_official | 15:a81a8d6c1dfe | 602 | if (module->mode != RTC_COUNT_MODE_16BIT) { |
mbed_official | 15:a81a8d6c1dfe | 603 | return STATUS_ERR_UNSUPPORTED_DEV; |
mbed_official | 15:a81a8d6c1dfe | 604 | } |
mbed_official | 15:a81a8d6c1dfe | 605 | |
mbed_official | 15:a81a8d6c1dfe | 606 | while (rtc_count_is_syncing(module)) { |
mbed_official | 15:a81a8d6c1dfe | 607 | /* Wait for synchronization */ |
mbed_official | 15:a81a8d6c1dfe | 608 | } |
mbed_official | 15:a81a8d6c1dfe | 609 | |
mbed_official | 15:a81a8d6c1dfe | 610 | /* Write value to register. */ |
mbed_official | 15:a81a8d6c1dfe | 611 | rtc_module->MODE1.PER.reg = period_value; |
mbed_official | 15:a81a8d6c1dfe | 612 | |
mbed_official | 15:a81a8d6c1dfe | 613 | return STATUS_OK; |
mbed_official | 15:a81a8d6c1dfe | 614 | } |
mbed_official | 15:a81a8d6c1dfe | 615 | |
mbed_official | 15:a81a8d6c1dfe | 616 | /** |
mbed_official | 15:a81a8d6c1dfe | 617 | * \brief Check if RTC compare match has occurred. |
mbed_official | 15:a81a8d6c1dfe | 618 | * |
mbed_official | 15:a81a8d6c1dfe | 619 | * Checks the compare flag to see if a match has occurred. The compare flag is |
mbed_official | 15:a81a8d6c1dfe | 620 | * set when there is a compare match between counter and the compare. |
mbed_official | 15:a81a8d6c1dfe | 621 | * |
mbed_official | 15:a81a8d6c1dfe | 622 | * \note Compare 4 and 5 are only available in 16-bit mode. |
mbed_official | 15:a81a8d6c1dfe | 623 | * |
mbed_official | 15:a81a8d6c1dfe | 624 | * \param[in,out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 625 | * \param[in] comp_index Index of compare to check current flag |
mbed_official | 15:a81a8d6c1dfe | 626 | */ |
mbed_official | 15:a81a8d6c1dfe | 627 | bool rtc_count_is_compare_match( |
mbed_official | 15:a81a8d6c1dfe | 628 | struct rtc_module *const module, |
mbed_official | 15:a81a8d6c1dfe | 629 | const enum rtc_count_compare comp_index) |
mbed_official | 15:a81a8d6c1dfe | 630 | { |
mbed_official | 15:a81a8d6c1dfe | 631 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 632 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 633 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 634 | |
mbed_official | 15:a81a8d6c1dfe | 635 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 636 | |
mbed_official | 15:a81a8d6c1dfe | 637 | /* Check sanity. */ |
mbed_official | 15:a81a8d6c1dfe | 638 | switch (module->mode) { |
mbed_official | 15:a81a8d6c1dfe | 639 | case RTC_COUNT_MODE_32BIT: |
mbed_official | 15:a81a8d6c1dfe | 640 | /* Check sanity for 32-bit mode. */ |
mbed_official | 15:a81a8d6c1dfe | 641 | if (comp_index > RTC_NUM_OF_COMP32) { |
mbed_official | 15:a81a8d6c1dfe | 642 | return false; |
mbed_official | 15:a81a8d6c1dfe | 643 | } |
mbed_official | 15:a81a8d6c1dfe | 644 | |
mbed_official | 15:a81a8d6c1dfe | 645 | break; |
mbed_official | 15:a81a8d6c1dfe | 646 | |
mbed_official | 15:a81a8d6c1dfe | 647 | case RTC_COUNT_MODE_16BIT: |
mbed_official | 15:a81a8d6c1dfe | 648 | /* Check sanity for 16-bit mode. */ |
mbed_official | 15:a81a8d6c1dfe | 649 | if (comp_index > RTC_NUM_OF_COMP16) { |
mbed_official | 15:a81a8d6c1dfe | 650 | return false; |
mbed_official | 15:a81a8d6c1dfe | 651 | } |
mbed_official | 15:a81a8d6c1dfe | 652 | |
mbed_official | 15:a81a8d6c1dfe | 653 | break; |
mbed_official | 15:a81a8d6c1dfe | 654 | |
mbed_official | 15:a81a8d6c1dfe | 655 | default: |
mbed_official | 15:a81a8d6c1dfe | 656 | Assert(false); |
mbed_official | 15:a81a8d6c1dfe | 657 | return false; |
mbed_official | 15:a81a8d6c1dfe | 658 | } |
mbed_official | 15:a81a8d6c1dfe | 659 | |
mbed_official | 15:a81a8d6c1dfe | 660 | /* Set status of INTFLAG as return argument. */ |
mbed_official | 15:a81a8d6c1dfe | 661 | return (rtc_module->MODE0.INTFLAG.reg & (1 << comp_index)) ? true : false; |
mbed_official | 15:a81a8d6c1dfe | 662 | } |
mbed_official | 15:a81a8d6c1dfe | 663 | |
mbed_official | 15:a81a8d6c1dfe | 664 | /** |
mbed_official | 15:a81a8d6c1dfe | 665 | * \brief Clears RTC compare match flag. |
mbed_official | 15:a81a8d6c1dfe | 666 | * |
mbed_official | 15:a81a8d6c1dfe | 667 | * Clears the compare flag. The compare flag is set when there is a compare |
mbed_official | 15:a81a8d6c1dfe | 668 | * match between the counter and the compare. |
mbed_official | 15:a81a8d6c1dfe | 669 | * |
mbed_official | 15:a81a8d6c1dfe | 670 | * \note Compare 4 and 5 are only available in 16-bit mode. |
mbed_official | 15:a81a8d6c1dfe | 671 | * |
mbed_official | 15:a81a8d6c1dfe | 672 | * \param[in,out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 673 | * \param[in] comp_index Index of compare to check current flag |
mbed_official | 15:a81a8d6c1dfe | 674 | * |
mbed_official | 15:a81a8d6c1dfe | 675 | * \return Status indicating if flag was successfully cleared. |
mbed_official | 15:a81a8d6c1dfe | 676 | * \retval STATUS_OK If flag was successfully cleared |
mbed_official | 15:a81a8d6c1dfe | 677 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were provided |
mbed_official | 15:a81a8d6c1dfe | 678 | * \retval STATUS_ERR_BAD_FORMAT If the module was not initialized in a mode |
mbed_official | 15:a81a8d6c1dfe | 679 | */ |
mbed_official | 15:a81a8d6c1dfe | 680 | enum status_code rtc_count_clear_compare_match( |
mbed_official | 15:a81a8d6c1dfe | 681 | struct rtc_module *const module, |
mbed_official | 15:a81a8d6c1dfe | 682 | const enum rtc_count_compare comp_index) |
mbed_official | 15:a81a8d6c1dfe | 683 | { |
mbed_official | 15:a81a8d6c1dfe | 684 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 685 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 686 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 687 | |
mbed_official | 15:a81a8d6c1dfe | 688 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 689 | |
mbed_official | 15:a81a8d6c1dfe | 690 | /* Check sanity. */ |
mbed_official | 15:a81a8d6c1dfe | 691 | switch (module->mode) { |
mbed_official | 15:a81a8d6c1dfe | 692 | case RTC_COUNT_MODE_32BIT: |
mbed_official | 15:a81a8d6c1dfe | 693 | /* Check sanity for 32-bit mode. */ |
mbed_official | 15:a81a8d6c1dfe | 694 | if (comp_index > RTC_NUM_OF_COMP32) { |
mbed_official | 15:a81a8d6c1dfe | 695 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 696 | } |
mbed_official | 15:a81a8d6c1dfe | 697 | |
mbed_official | 15:a81a8d6c1dfe | 698 | break; |
mbed_official | 15:a81a8d6c1dfe | 699 | |
mbed_official | 15:a81a8d6c1dfe | 700 | case RTC_COUNT_MODE_16BIT: |
mbed_official | 15:a81a8d6c1dfe | 701 | /* Check sanity for 16-bit mode. */ |
mbed_official | 15:a81a8d6c1dfe | 702 | if (comp_index > RTC_NUM_OF_COMP16) { |
mbed_official | 15:a81a8d6c1dfe | 703 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 704 | } |
mbed_official | 15:a81a8d6c1dfe | 705 | |
mbed_official | 15:a81a8d6c1dfe | 706 | break; |
mbed_official | 15:a81a8d6c1dfe | 707 | |
mbed_official | 15:a81a8d6c1dfe | 708 | default: |
mbed_official | 15:a81a8d6c1dfe | 709 | Assert(false); |
mbed_official | 15:a81a8d6c1dfe | 710 | return STATUS_ERR_BAD_FORMAT; |
mbed_official | 15:a81a8d6c1dfe | 711 | } |
mbed_official | 15:a81a8d6c1dfe | 712 | |
mbed_official | 15:a81a8d6c1dfe | 713 | /* Clear INTFLAG. */ |
mbed_official | 15:a81a8d6c1dfe | 714 | rtc_module->MODE0.INTFLAG.reg = RTC_MODE1_INTFLAG_CMP(1 << comp_index); |
mbed_official | 15:a81a8d6c1dfe | 715 | |
mbed_official | 15:a81a8d6c1dfe | 716 | return STATUS_OK; |
mbed_official | 15:a81a8d6c1dfe | 717 | } |
mbed_official | 15:a81a8d6c1dfe | 718 | |
mbed_official | 15:a81a8d6c1dfe | 719 | /** |
mbed_official | 15:a81a8d6c1dfe | 720 | * \brief Calibrate for too-slow or too-fast oscillator. |
mbed_official | 15:a81a8d6c1dfe | 721 | * |
mbed_official | 15:a81a8d6c1dfe | 722 | * When used, the RTC will compensate for an inaccurate oscillator. The |
mbed_official | 15:a81a8d6c1dfe | 723 | * RTC module will add or subtract cycles from the RTC prescaler to adjust the |
mbed_official | 15:a81a8d6c1dfe | 724 | * frequency in approximately 1 PPM steps. The provided correction value should |
mbed_official | 15:a81a8d6c1dfe | 725 | * be between 0 and 127, allowing for a maximum 127 PPM correction. |
mbed_official | 15:a81a8d6c1dfe | 726 | * |
mbed_official | 15:a81a8d6c1dfe | 727 | * If no correction is needed, set value to zero. |
mbed_official | 15:a81a8d6c1dfe | 728 | * |
mbed_official | 15:a81a8d6c1dfe | 729 | * \note Can only be used when the RTC is operated in 1Hz. |
mbed_official | 15:a81a8d6c1dfe | 730 | * |
mbed_official | 15:a81a8d6c1dfe | 731 | * \param[in,out] module Pointer to the software instance struct |
mbed_official | 15:a81a8d6c1dfe | 732 | * \param[in] value Ranging from -127 to 127 used for the correction |
mbed_official | 15:a81a8d6c1dfe | 733 | * |
mbed_official | 15:a81a8d6c1dfe | 734 | * \return Status of the calibration procedure. |
mbed_official | 15:a81a8d6c1dfe | 735 | * \retval STATUS_OK If calibration was executed correctly |
mbed_official | 15:a81a8d6c1dfe | 736 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were provided |
mbed_official | 15:a81a8d6c1dfe | 737 | */ |
mbed_official | 15:a81a8d6c1dfe | 738 | enum status_code rtc_count_frequency_correction( |
mbed_official | 15:a81a8d6c1dfe | 739 | struct rtc_module *const module, |
mbed_official | 15:a81a8d6c1dfe | 740 | const int8_t value) |
mbed_official | 15:a81a8d6c1dfe | 741 | { |
mbed_official | 15:a81a8d6c1dfe | 742 | /* Sanity check arguments */ |
mbed_official | 15:a81a8d6c1dfe | 743 | Assert(module); |
mbed_official | 15:a81a8d6c1dfe | 744 | Assert(module->hw); |
mbed_official | 15:a81a8d6c1dfe | 745 | |
mbed_official | 15:a81a8d6c1dfe | 746 | Rtc *const rtc_module = module->hw; |
mbed_official | 15:a81a8d6c1dfe | 747 | |
mbed_official | 15:a81a8d6c1dfe | 748 | /* Check if valid argument. */ |
mbed_official | 15:a81a8d6c1dfe | 749 | if (abs(value) > 0x7F) { |
mbed_official | 15:a81a8d6c1dfe | 750 | /* Value bigger than allowed, return invalid argument. */ |
mbed_official | 15:a81a8d6c1dfe | 751 | return STATUS_ERR_INVALID_ARG; |
mbed_official | 15:a81a8d6c1dfe | 752 | } |
mbed_official | 15:a81a8d6c1dfe | 753 | |
mbed_official | 15:a81a8d6c1dfe | 754 | uint32_t new_correction_value; |
mbed_official | 15:a81a8d6c1dfe | 755 | |
mbed_official | 15:a81a8d6c1dfe | 756 | /* Load the new correction value as a positive value, sign added later */ |
mbed_official | 15:a81a8d6c1dfe | 757 | new_correction_value = abs(value); |
mbed_official | 15:a81a8d6c1dfe | 758 | |
mbed_official | 15:a81a8d6c1dfe | 759 | /* Convert to positive value and adjust register sign bit. */ |
mbed_official | 15:a81a8d6c1dfe | 760 | if (value < 0) { |
mbed_official | 15:a81a8d6c1dfe | 761 | new_correction_value |= RTC_FREQCORR_SIGN; |
mbed_official | 15:a81a8d6c1dfe | 762 | } |
mbed_official | 15:a81a8d6c1dfe | 763 | |
mbed_official | 15:a81a8d6c1dfe | 764 | while (rtc_count_is_syncing(module)) { |
mbed_official | 15:a81a8d6c1dfe | 765 | /* Wait for synchronization */ |
mbed_official | 15:a81a8d6c1dfe | 766 | } |
mbed_official | 15:a81a8d6c1dfe | 767 | |
mbed_official | 15:a81a8d6c1dfe | 768 | /* Set value. */ |
mbed_official | 15:a81a8d6c1dfe | 769 | rtc_module->MODE0.FREQCORR.reg = new_correction_value; |
mbed_official | 15:a81a8d6c1dfe | 770 | |
mbed_official | 15:a81a8d6c1dfe | 771 | return STATUS_OK; |
mbed_official | 15:a81a8d6c1dfe | 772 | } |
mbed_official | 15:a81a8d6c1dfe | 773 |