[EFM32] Microsecond ticker optimization #2666
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Cleaned up the EFM32 us_ticker implementation since it was taking way too long to execute, leading to very unpredictable results. Relevant forum thread: https://developer.mbed.org/forum/platform-66-EFM32-Zero-Gecko-community/topic/26198/
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/morph test |
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@mbed-bot: TEST HOST_OSES=ALL |
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[Build 911] |
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@mbed-bot: TEST HOST_OSES=ALL |
Result: SUCCESSYour command has finished executing! Here's what you wrote!
Outputmbed Build Number: 835 All builds and test passed! |
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[Build 914] |
LGTM. The failures are not related to this change-set. |
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Ports for Upcoming Targets 2669: Added u-blox C029 target ARMmbed/mbed-os#2669 2707: [EFM32] Add IAR support for remaining Silicon Labs targets ARMmbed/mbed-os#2707 2819: MultiTech xDot platform support - 09.26.2016 ARMmbed/mbed-os#2819 2827: include MultiTech xDot in mbed 5 releases ARMmbed/mbed-os#2827 Fixes and Changes 2522: Add CThunk for CM7 ARMmbed/mbed-os#2522 2518: Enable uvisor on Beetle ARMmbed/mbed-os#2518 2571: STM32F7 - Add asynchronous serial ARMmbed/mbed-os#2571 2616: STM32F3xx - Add Serial Flow Control pins + enable it ARMmbed/mbed-os#2616 2619: NUCLEO_L152RE - Add Serial Flow Control ARMmbed/mbed-os#2619 2620: NUCLEO_F429ZI - Add SERIAL_FC macro ARMmbed/mbed-os#2620 2666: [EFM32] Microsecond ticker optimization ARMmbed/mbed-os#2666 2681: STM32F0xx - Add support of ADC internal channels ARMmbed/mbed-os#2681 2687: [NRF5] Add fs_data symbol in data secton for gcc ARMmbed/mbed-os#2687 2696: Add device_has to all nrf51 devices ARMmbed/mbed-os#2696 2703: TARGET_NRF5: Changed 'serial_baud' implementation to support special baud rates. ARMmbed/mbed-os#2703 2704: DISCO_L476VG: add SPI nicknames ARMmbed/mbed-os#2704 2723: KSDK serial_api.c: Fix assertion error for ParityEven ARMmbed/mbed-os#2723 2463: [STM32L0] Add asynchronous serial ARMmbed/mbed-os#2463 2572: Fix STM32F407VG target name and LPC11U6X linker errors ARMmbed/mbed-os#2572 2698: DELTA_DFBM_NQ620 target ARMmbed/mbed-os#2698 2542: Dev spi asynch stm32f4 ARMmbed/mbed-os#2542 2650: STM32F3 - Add low power timer ARMmbed/mbed-os#2650 2415: [STM32F0] Add asynchronous serial ARMmbed/mbed-os#2415 2585: Added support for ADC only pins in LPC43xx ARMmbed/mbed-os#2585 2622: [STM32F4] Add asynchronous I2C ARMmbed/mbed-os#2622 2719: Updated ARM linker scripts for Kinetis platforms that use SDK 2.0 ARMmbed/mbed-os#2719 2728: Added ethernet and enabled IPV4 feature for the EVK-ODIN-W2/C029 target ARMmbed/mbed-os#2728 2747: [LPC11U68] Fix pin interrupt select offset ARMmbed/mbed-os#2747 2751: STM32L0xx - Add Serial Flow Control ARMmbed/mbed-os#2751 2753: [NUCLEO_F767ZI] Add CAN capability ARMmbed/mbed-os#2753 2759: STM32F0 - Add low power timer ARMmbed/mbed-os#2759 2763: STM32L1 - Add low power timer ARMmbed/mbed-os#2763 2764: STM32L4 - Add low power timer ARMmbed/mbed-os#2764 2771: STM32L4 - Update deepsleep implementation ARMmbed/mbed-os#2771 2775: Update KSDK SDHC driver for K64F & K66F ARMmbed/mbed-os#2775 2792: [NUCLEO_F303ZE] MBED-OS5 capability ARMmbed/mbed-os#2792 2762: STM32L0 - Add low power timer ARMmbed/mbed-os#2762 2761: STM32F7 - Add low power timer ARMmbed/mbed-os#2761
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Cleaned up the EFM32 us_ticker implementation since it was taking way too long to execute, leading to very unpredictable results. About a 4x speedup by optimizing out a long division.
Relevant forum thread: [https://developer.mbed.org/forum/platform-66-EFM32-Zero-Gecko-community/topic/26198/]