kopia lustrzana https://github.com/micropython/micropython
e1a6da0f9d
Optionally adds time() and time_ns() to the time module, as well as a machine.RTC class that only implements the datetime() method (following the example of the rp2 port), whose sole purpose is to provide the ability to set the time. Also provides the basis for enabling gmtime(), localtime(), mktime() in the time module. The nRF52 does not have a dedicated real-time clock peripheral, but timekeeping can be done by the same real-time counter that already powers the time.ticks_* and related functions. For reasonable accuracy, a suitable LFCLK source is required: The internal RC oscillator (BLUETOOTH_LFCLK_RC) by itself is insufficient, but any of the following work fine: - external 32kHz crystal (default) - synthesis from HFCLK (BLUETOOTH_LFCLK_SYNTH) when HFXO (external 32MHz crystal) is enabled - BLUETOOTH_LFCLK_RC + periodical calibration from HFXO (automatically done by the SoftDevice while enabled using ble.enable()) Boards can enable this by defining both configuration options MICROPY_PY_TIME_TICKS and MICROPY_PY_TIME_TIME_TIME_NS. Additionally, they may want to enable MICROPY_PY_TIME_GMTIME_LOCALTIME_MKTIME. This includes a generic implementation of mp_time_localtime_get() and mp_time_time_get() in terms of mp_hal_time_ns(), which could also be used by other ports. In particular by the embed port, for which I originally wrote it, noting the following: "I'm unsure where to put modtime_mphal.h, it could also be in extmod. The important thing is that for MICROPY_PY_TIME_INCLUDEFILE to work it must be at the same path in both the port build (original source tree) and the application build (micropython_embed distribution), therefore not in ports/embed/port. It is named .h, mismatching the corresponding ports/*/modtime.c, because it must not be compiled separately, which naming it .c would make harder for users of the embed port - they would need to explicitly exclude it, whereas this way they can continue to just compile all the .c files found in the micropython_embed distribution except those in lib." Signed-off-by: Christian Walther <cwalther@gmx.ch> |
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| .. | ||
| bare-arm | ||
| cc3200 | ||
| embed | ||
| esp32 | ||
| esp8266 | ||
| mimxrt | ||
| minimal | ||
| nrf | ||
| pic16bit | ||
| powerpc | ||
| qemu-arm | ||
| renesas-ra | ||
| rp2 | ||
| samd | ||
| stm32 | ||
| unix | ||
| webassembly | ||
| windows | ||
| zephyr | ||