-
Notifications
You must be signed in to change notification settings - Fork 3k
[STM32F0xx] LowPowerTicker implementation #1796
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Merged
Merged
Changes from all commits
Commits
Show all changes
2 commits
Select commit
Hold shift + click to select a range
File filter
Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /* mbed Microcontroller Library | ||
| ******************************************************************************* | ||
| * Copyright (c) 2016, STMicroelectronics | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are met: | ||
| * | ||
| * 1. Redistributions of source code must retain the above copyright notice, | ||
| * this list of conditions and the following disclaimer. | ||
| * 2. Redistributions in binary form must reproduce the above copyright notice, | ||
| * this list of conditions and the following disclaimer in the documentation | ||
| * and/or other materials provided with the distribution. | ||
| * 3. Neither the name of STMicroelectronics nor the names of its contributors | ||
| * may be used to endorse or promote products derived from this software | ||
| * without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | ||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| ******************************************************************************* | ||
| */ | ||
| #include "device.h" | ||
|
|
||
| #if DEVICE_LOWPOWERTIMER | ||
|
|
||
| #include "ticker_api.h" | ||
| #include "lp_ticker_api.h" | ||
| #include "rtc_api.h" | ||
| #include "rtc_api_hal.h" | ||
|
|
||
| static uint8_t lp_ticker_inited = 0; | ||
| static uint8_t lp_ticker_reconf_presc = 0; | ||
|
|
||
| void lp_ticker_init() { | ||
| if (lp_ticker_inited) return; | ||
| lp_ticker_inited = 1; | ||
|
|
||
| rtc_init(); | ||
| rtc_set_irq_handler((uint32_t) lp_ticker_irq_handler); | ||
| } | ||
|
|
||
| uint32_t lp_ticker_read() { | ||
| uint32_t sub_secs, milis; | ||
| time_t time; | ||
|
|
||
| lp_ticker_init(); | ||
|
|
||
| time = rtc_read(); | ||
| sub_secs = rtc_read_subseconds(); | ||
| milis = 1000 - (sub_secs * 1000 / rtc_ticker_get_synch_presc()); | ||
|
|
||
| return (time * 1000000) + (milis * 1000); | ||
| } | ||
|
|
||
| void lp_ticker_set_interrupt(timestamp_t timestamp) { | ||
| uint32_t sub_secs, delta, milis; | ||
| time_t secs; | ||
| struct tm *timeinfo; | ||
|
|
||
| // Reconfigure RTC prescalers whenever the timestamp is below 30ms | ||
| if (!lp_ticker_reconf_presc && timestamp < 30000) { | ||
| rtc_reconfigure_prescalers(); | ||
| lp_ticker_reconf_presc = 1; | ||
| } | ||
|
|
||
| milis = (timestamp % 1000000) / 1000; | ||
|
|
||
| secs = rtc_read(); | ||
| delta = ((timestamp / 1000000) - secs); | ||
|
|
||
| secs += delta; | ||
| sub_secs = (rtc_ticker_get_synch_presc() * (1000 - milis)) / 1000; | ||
| timeinfo = localtime(&secs); | ||
|
|
||
| rtc_set_alarm(timeinfo, sub_secs); | ||
| } | ||
|
|
||
| void lp_ticker_disable_interrupt() { | ||
| lp_ticker_reconf_presc = 0; | ||
| rtc_ticker_disable_irq(); | ||
| } | ||
|
|
||
| void lp_ticker_clear_interrupt() { | ||
| } | ||
|
|
||
| #endif | ||
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| /* mbed Microcontroller Library | ||
| ******************************************************************************* | ||
| * Copyright (c) 2016, STMicroelectronics | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are met: | ||
| * | ||
| * 1. Redistributions of source code must retain the above copyright notice, | ||
| * this list of conditions and the following disclaimer. | ||
| * 2. Redistributions in binary form must reproduce the above copyright notice, | ||
| * this list of conditions and the following disclaimer in the documentation | ||
| * and/or other materials provided with the distribution. | ||
| * 3. Neither the name of STMicroelectronics nor the names of its contributors | ||
| * may be used to endorse or promote products derived from this software | ||
| * without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | ||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| ******************************************************************************* | ||
| */ | ||
|
|
||
| #ifndef MBED_RTC_API_HAL_H | ||
| #define MBED_RTC_API_HAL_H | ||
|
|
||
| #include <stdint.h> | ||
| #include "rtc_api.h" | ||
|
|
||
| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
| /* | ||
| * Extend rtc_api.h | ||
| */ | ||
|
|
||
| // Prescaler values for LSE clock | ||
| #define RTC_ASYNCH_PREDIV 0x7F | ||
| #define RTC_SYNCH_PREDIV 0x00FF | ||
|
|
||
| void rtc_set_irq_handler(uint32_t handler); | ||
|
|
||
| void rtc_ticker_disable_irq(); | ||
| uint32_t rtc_ticker_get_synch_presc(); | ||
|
|
||
| void rtc_set_alarm(struct tm *ti, uint32_t subsecs); | ||
| uint32_t rtc_read_subseconds(); | ||
| void rtc_reconfigure_prescalers(); | ||
|
|
||
| #ifdef __cplusplus | ||
| } | ||
| #endif | ||
|
|
||
| #endif |
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
please add a copyright header as other files have, thanks
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Ok. Thanks