035221bdb1
Wait_ns () internal delay loop code alignment to 16 for decreasing execution time.
2019-07-01 14:34:43 +02:00
a65b1a76ac
wait_ns micro-optimisation
...
Use `+ 1` to set the "Thumb" indicator on the `delay_loop` routine
address, rather than `| 1`. That makes it something that can be done
by the linker, rather than needing to be done at run-time.
Saves one instruction and one cycle.
2019-06-14 10:22:08 +03:00
57310729d4
wait_us optimization
...
As the timer code became more generic, coping with initialization on
demand, and variable width and speed us_ticker_api implementations,
wait_us has gradually gotten slower and slower.
Some platforms have reportedly seen overhead of wait_us() increase from
10µs to 30µs. These changes should fully reverse that drop, and even
make it better than ever.
Add fast paths for platforms that provide compile-time information about
us_ticker. Speed and code size is improved further if:
* Timer has >= 2^32 microsecond range, or better still is 32-bit 1MHz.
* Platform implements us_ticker_read() as a macro
* Timer is initialised at boot, rather than first use
The latter initialisation option is the default for STM, as this has
always been the case.
2019-06-14 10:22:08 +03:00
e9885feb20
Export wait_ns to be overridable
...
Some targets may not provide zero-wait-state flash performance. Export this function
to be overridable for targets to provide more accurate implementation like locating
'delay_loop_code' in SRAM.
2019-05-28 16:26:42 +08:00
6aca51fc17
Use LP tickers for waiting in no RTOS builds when available
...
For bare metal builds, use the lp_ticker for calls to wait_ms.
2019-05-16 07:02:06 -07:00
090fcb007f
Changed LOOP_SCALER of "wait_ns()"
2019-03-26 19:02:46 +09:00
943254c78c
Merge pull request #9896 from kfnta/wait_us_no_usticker
...
wait_us without usticker
2019-03-14 09:44:25 +01:00
0aa8dc2383
Updated LOOP_SCALER value for Cortex-M33
...
Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
2019-03-08 07:33:48 -06:00
276ef91bb6
wait_us using wait_ns
2019-03-01 11:11:19 +00:00
91b22f8bf3
Hand assemble to get alignment
2019-02-26 17:30:52 +02:00
7215515880
Add wait_ns API
...
This provides the ability to generate really small delays - it's often
the case that wait_us() takes multiple microseconds to set up, so
having an alternative suitable for <10us delays is useful.
There have been a few local implementations - it makes sense to
centralise them as they need retuning for each new ARM core.
Based on the local implementation inside the Atmel 802.15.4 driver.
2019-02-26 17:30:51 +02:00
ad759b7749
platform: add spdx license
2018-11-28 10:39:52 +00:00
ffcb6ecfb5
platform: astyle update
2018-06-29 10:38:44 +01:00
114d60c8ed
Remove direct use of us ticker from platform
...
Update platform code to use the ticker common layer rather than using
HAL us ticker directly. This both ensures that the underlying ticker
is properly initialized and that the value read is in microseconds with
full 32-bit range.
2017-09-29 09:21:00 +01:00
aff49d8d1e
Renamed files in platform to match source names
...
critical.h -> mbed_critical.h
sleep.h -> mbed_sleep.h
toolchain.h -> mbed_toolchain.h
rtc_time.h -> mbed_rtc_time.h
semihost_api.h -> mbed_semihost_api.h
wait_api.h -> mbed_wait_api.h
2017-02-22 18:17:54 -06:00
301b77c4b2
For drivers, events, hal, platform, rtos and mbed.h add one level of path to make sure specific and unique includes files are found.
2016-10-01 02:11:36 -05:00
15904b7544
restructure - Split hal into drivers+platform+hal
...
hal/common/AnalogIn.cpp -> drivers/AnalogIn.cpp
hal/api/AnalogIn.h -> drivers/AnalogIn.h
hal/api/AnalogOut.h -> drivers/AnalogOut.h
hal/common/BusIn.cpp -> drivers/BusIn.cpp
hal/api/BusIn.h -> drivers/BusIn.h
hal/common/BusInOut.cpp -> drivers/BusInOut.cpp
hal/api/BusInOut.h -> drivers/BusInOut.h
hal/common/BusOut.cpp -> drivers/BusOut.cpp
hal/api/BusOut.h -> drivers/BusOut.h
hal/common/CAN.cpp -> drivers/CAN.cpp
hal/api/CAN.h -> drivers/CAN.h
hal/api/CircularBuffer.h -> drivers/CircularBuffer.h
hal/api/DigitalIn.h -> drivers/DigitalIn.h
hal/api/DigitalInOut.h -> drivers/DigitalInOut.h
hal/api/DigitalOut.h -> drivers/DigitalOut.h
hal/api/DirHandle.h -> drivers/DirHandle.h
hal/common/Ethernet.cpp -> drivers/Ethernet.cpp
hal/api/Ethernet.h -> drivers/Ethernet.h
hal/common/FileBase.cpp -> drivers/FileBase.cpp
hal/api/FileBase.h -> drivers/FileBase.h
hal/api/FileHandle.h -> drivers/FileHandle.h
hal/common/FileLike.cpp -> drivers/FileLike.cpp
hal/api/FileLike.h -> drivers/FileLike.h
hal/common/FilePath.cpp -> drivers/FilePath.cpp
hal/api/FilePath.h -> drivers/FilePath.h
hal/common/FileSystemLike.cpp -> drivers/FileSystemLike.cpp
hal/api/FileSystemLike.h -> drivers/FileSystemLike.h
hal/common/I2C.cpp -> drivers/I2C.cpp
hal/api/I2C.h -> drivers/I2C.h
hal/common/I2CSlave.cpp -> drivers/I2CSlave.cpp
hal/api/I2CSlave.h -> drivers/I2CSlave.h
hal/common/InterruptIn.cpp -> drivers/InterruptIn.cpp
hal/api/InterruptIn.h -> drivers/InterruptIn.h
hal/common/InterruptManager.cpp -> drivers/InterruptManager.cpp
hal/api/InterruptManager.h -> drivers/InterruptManager.h
hal/common/LocalFileSystem.cpp -> drivers/LocalFileSystem.cpp
hal/api/LocalFileSystem.h -> drivers/LocalFileSystem.h
hal/api/LowPowerTicker.h -> drivers/LowPowerTicker.h
hal/api/LowPowerTimeout.h -> drivers/LowPowerTimeout.h
hal/api/LowPowerTimer.h -> drivers/LowPowerTimer.h
hal/api/PortIn.h -> drivers/PortIn.h
hal/api/PortInOut.h -> drivers/PortInOut.h
hal/api/PortOut.h -> drivers/PortOut.h
hal/api/PwmOut.h -> drivers/PwmOut.h
hal/common/RawSerial.cpp -> drivers/RawSerial.cpp
hal/api/RawSerial.h -> drivers/RawSerial.h
hal/common/SPI.cpp -> drivers/SPI.cpp
hal/api/SPI.h -> drivers/SPI.h
hal/common/SPISlave.cpp -> drivers/SPISlave.cpp
hal/api/SPISlave.h -> drivers/SPISlave.h
hal/common/Serial.cpp -> drivers/Serial.cpp
hal/api/Serial.h -> drivers/Serial.h
hal/common/SerialBase.cpp -> drivers/SerialBase.cpp
hal/api/SerialBase.h -> drivers/SerialBase.h
hal/common/Stream.cpp -> drivers/Stream.cpp
hal/api/Stream.h -> drivers/Stream.h
hal/common/Ticker.cpp -> drivers/Ticker.cpp
hal/api/Ticker.h -> drivers/Ticker.h
hal/common/Timeout.cpp -> drivers/Timeout.cpp
hal/api/Timeout.h -> drivers/Timeout.h
hal/common/Timer.cpp -> drivers/Timer.cpp
hal/api/Timer.h -> drivers/Timer.h
hal/common/TimerEvent.cpp -> drivers/TimerEvent.cpp
hal/api/TimerEvent.h -> drivers/TimerEvent.h
hal/api/Transaction.h -> drivers/Transaction.h
hal/api/can_helper.h -> drivers/can_helper.h
hal/.yotta_ignore
hal/CMakeLists.txt
hal/hal/analogin_api.h -> hal/analogin_api.h
hal/hal/analogout_api.h -> hal/analogout_api.h
hal/hal/buffer.h -> hal/buffer.h
hal/hal/can_api.h -> hal/can_api.h
hal/hal/dma_api.h -> hal/dma_api.h
hal/hal/ethernet_api.h -> hal/ethernet_api.h
hal/hal/gpio_api.h -> hal/gpio_api.h
hal/hal/gpio_irq_api.h -> hal/gpio_irq_api.h
hal/hal/i2c_api.h -> hal/i2c_api.h
hal/hal/lp_ticker_api.h -> hal/lp_ticker_api.h
hal/common/mbed_gpio.c -> hal/mbed_gpio.c
hal/common/mbed_lp_ticker_api.c -> hal/mbed_lp_ticker_api.c
hal/common/mbed_pinmap_common.c -> hal/mbed_pinmap_common.c
hal/common/mbed_ticker_api.c -> hal/mbed_ticker_api.c
hal/common/mbed_us_ticker_api.c -> hal/mbed_us_ticker_api.c
hal/module.json
hal/hal/pinmap.h -> hal/pinmap.h
hal/hal/port_api.h -> hal/port_api.h
hal/hal/pwmout_api.h -> hal/pwmout_api.h
hal/hal/rtc_api.h -> hal/rtc_api.h
hal/hal/serial_api.h -> hal/serial_api.h
hal/hal/sleep_api.h -> hal/sleep_api.h
hal/hal/spi_api.h -> hal/spi_api.h
hal/hal/storage_abstraction/Driver_Common.h -> hal/storage_abstraction/Driver_Common.h
hal/hal/storage_abstraction/Driver_Storage.h -> hal/storage_abstraction/Driver_Storage.h
hal/hal/ticker_api.h -> hal/ticker_api.h
hal/hal/trng_api.h -> hal/trng_api.h
hal/hal/us_ticker_api.h -> hal/us_ticker_api.h
hal/api/mbed.h -> mbed.h
hal/api/CThunk.h -> platform/CThunk.h
hal/common/CallChain.cpp -> platform/CallChain.cpp
hal/api/CallChain.h -> platform/CallChain.h
hal/api/Callback.h -> platform/Callback.h
hal/api/FunctionPointer.h -> platform/FunctionPointer.h
hal/api/PlatformMutex.h -> platform/PlatformMutex.h
hal/api/SingletonPtr.h -> platform/SingletonPtr.h
hal/api/critical.h -> platform/critical.h
hal/common/mbed_alloc_wrappers.cpp -> platform/mbed_alloc_wrappers.cpp
hal/common/mbed_assert.c -> platform/mbed_assert.c
hal/api/mbed_assert.h -> platform/mbed_assert.h
hal/common/mbed_board.c -> platform/mbed_board.c
hal/common/mbed_critical.c -> platform/mbed_critical.c
hal/api/mbed_debug.h -> platform/mbed_debug.h
hal/common/mbed_error.c -> platform/mbed_error.c
hal/api/mbed_error.h -> platform/mbed_error.h
hal/common/mbed_interface.c -> platform/mbed_interface.c
hal/api/mbed_interface.h -> platform/mbed_interface.h
hal/common/mbed_mem_trace.c -> platform/mbed_mem_trace.c
hal/api/mbed_mem_trace.h -> platform/mbed_mem_trace.h
hal/common/mbed_rtc_time.cpp -> platform/mbed_rtc_time.cpp
hal/common/mbed_semihost_api.c -> platform/mbed_semihost_api.c
hal/api/mbed_stats.h -> platform/mbed_stats.h
hal/common/mbed_wait_api_no_rtos.c -> platform/mbed_wait_api_no_rtos.c
hal/common/mbed_wait_api_rtos.cpp -> platform/mbed_wait_api_rtos.cpp
hal/api/platform.h -> platform/platform.h
hal/common/retarget.cpp -> platform/retarget.cpp
hal/api/rtc_time.h -> platform/rtc_time.h
hal/api/semihost_api.h -> platform/semihost_api.h
hal/api/toolchain.h -> platform/toolchain.h
hal/api/wait_api.h -> platform/wait_api.h
2016-09-30 19:18:09 -05:00
Tymoteusz Bloch
Kevin Bracey
Chun-Chieh Li
Marcus Chang
d-kato
Martin Kojtal
Mahesh Mahadevan
Michael Schwarcz
Russ Butler
Christopher Haster
Sam Grove