diff --git a/shared-bindings/busio/SPI.c b/shared-bindings/busio/SPI.c index db84ac97b5..1ac9629f80 100644 --- a/shared-bindings/busio/SPI.c +++ b/shared-bindings/busio/SPI.c @@ -41,44 +41,44 @@ #include "supervisor/shared/translate.h" -//| .. currentmodule:: busio +//|class SPI: +//| """.. currentmodule:: busio //| -//| :class:`SPI` -- a 3-4 wire serial protocol -//| ----------------------------------------------- +//| `SPI` -- a 3-4 wire serial protocol +//| ----------------------------------------------- //| -//| SPI is a serial protocol that has exclusive pins for data in and out of the -//| master. It is typically faster than :py:class:`~busio.I2C` because a -//| separate pin is used to control the active slave rather than a transitted -//| address. This class only manages three of the four SPI lines: `!clock`, -//| `!MOSI`, `!MISO`. Its up to the client to manage the appropriate slave -//| select line. (This is common because multiple slaves can share the `!clock`, -//| `!MOSI` and `!MISO` lines and therefore the hardware.) +//| SPI is a serial protocol that has exclusive pins for data in and out of the +//| master. It is typically faster than :py:class:`~busio.I2C` because a +//| separate pin is used to control the active slave rather than a transitted +//| address. This class only manages three of the four SPI lines: `!clock`, +//| `!MOSI`, `!MISO`. Its up to the client to manage the appropriate slave +//| select line. (This is common because multiple slaves can share the `!clock`, +//| `!MOSI` and `!MISO` lines and therefore the hardware.)""" //| -//| .. class:: SPI(clock, MOSI=None, MISO=None) +//| def __init__(self, clock: microcontroller.Pin, MOSI: microcontroller.Pin = None, MISO: microcontroller.Pin = None): //| -//| Construct an SPI object on the given pins. +//| """Construct an SPI object on the given pins. //| -//| ..note:: The SPI peripherals allocated in order of desirability, if possible, -//| such as highest speed and not shared use first. For instance, on the nRF52840, -//| there is a single 32MHz SPI peripheral, and multiple 8MHz peripherals, -//| some of which may also be used for I2C. The 32MHz SPI peripheral is returned -//| first, then the exclusive 8MHz SPI peripheral, and finally the shared 8MHz -//| peripherals. +//| ..note:: The SPI peripherals allocated in order of desirability, if possible, +//| such as highest speed and not shared use first. For instance, on the nRF52840, +//| there is a single 32MHz SPI peripheral, and multiple 8MHz peripherals, +//| some of which may also be used for I2C. The 32MHz SPI peripheral is returned +//| first, then the exclusive 8MHz SPI peripheral, and finally the shared 8MHz +//| peripherals. //| -//| .. seealso:: Using this class directly requires careful lock management. -//| Instead, use :class:`~adafruit_bus_device.spi_device.SPIDevice` to -//| manage locks. +//| .. seealso:: Using this class directly requires careful lock management. +//| Instead, use :class:`~adafruit_bus_device.spi_device.SPIDevice` to +//| manage locks. //| -//| .. seealso:: Using this class to directly read registers requires manual -//| bit unpacking. Instead, use an existing driver or make one with -//| :ref:`Register ` data descriptors. +//| .. seealso:: Using this class to directly read registers requires manual +//| bit unpacking. Instead, use an existing driver or make one with +//| :ref:`Register ` data descriptors. //| -//| :param ~microcontroller.Pin clock: the pin to use for the clock. -//| :param ~microcontroller.Pin MOSI: the Master Out Slave In pin. -//| :param ~microcontroller.Pin MISO: the Master In Slave Out pin. -//| -// class SPI: -// def __init__(self, clock: microcontroller.Pin, MOSI: microcontroller.Pin = None, MISO: microcontroller.Pin = None): ... +//| :param ~microcontroller.Pin clock: the pin to use for the clock. +//| :param ~microcontroller.Pin MOSI: the Master Out Slave In pin. +//| :param ~microcontroller.Pin MISO: the Master In Slave Out pin.""" +//| ... + // TODO(tannewt): Support LSB SPI. STATIC mp_obj_t busio_spi_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { @@ -101,11 +101,9 @@ STATIC mp_obj_t busio_spi_make_new(const mp_obj_type_t *type, size_t n_args, con return MP_OBJ_FROM_PTR(self); } -//| .. method:: deinit() -//| -//| Turn off the SPI bus. -//| -// def deinit(self, ) -> Any: ... +//| def deinit(self, ) -> Any: +//| """Turn off the SPI bus.""" +//| ... STATIC mp_obj_t busio_spi_obj_deinit(mp_obj_t self_in) { busio_spi_obj_t *self = MP_OBJ_TO_PTR(self_in); common_hal_busio_spi_deinit(self); @@ -113,19 +111,15 @@ STATIC mp_obj_t busio_spi_obj_deinit(mp_obj_t self_in) { } MP_DEFINE_CONST_FUN_OBJ_1(busio_spi_deinit_obj, busio_spi_obj_deinit); -//| .. method:: __enter__() -//| -//| No-op used by Context Managers. -//| -// Provided by context manager helper. -// def __enter__(self, ) -> Any: ... +//| def __enter__(self, ) -> Any: +//| """No-op used by Context Managers. +//| Provided by context manager helper.""" +//| ... -//| .. method:: __exit__() -//| -//| Automatically deinitializes the hardware when exiting a context. See -//| :ref:`lifetime-and-contextmanagers` for more info. -//| -// def __exit__(self, ) -> Any: ... +//| def __exit__(self, ) -> Any: +//| """Automatically deinitializes the hardware when exiting a context. See +//| :ref:`lifetime-and-contextmanagers` for more info.""" +//| ... STATIC mp_obj_t busio_spi_obj___exit__(size_t n_args, const mp_obj_t *args) { (void)n_args; common_hal_busio_spi_deinit(args[0]); @@ -146,30 +140,29 @@ STATIC void check_for_deinit(busio_spi_obj_t *self) { } } -//| .. method:: configure(*, baudrate=100000, polarity=0, phase=0, bits=8) +//| def configure(self, *, baudrate: int = 100000, polarity: int = 0, phase: int = 0, bits: int = 8) -> Any: +//| """Configures the SPI bus. The SPI object must be locked. //| -//| Configures the SPI bus. The SPI object must be locked. +//| :param int baudrate: the desired clock rate in Hertz. The actual clock rate may be higher or lower +//| due to the granularity of available clock settings. +//| Check the `frequency` attribute for the actual clock rate. +//| :param int polarity: the base state of the clock line (0 or 1) +//| :param int phase: the edge of the clock that data is captured. First (0) +//| or second (1). Rising or falling depends on clock polarity. +//| :param int bits: the number of bits per word //| -//| :param int baudrate: the desired clock rate in Hertz. The actual clock rate may be higher or lower -//| due to the granularity of available clock settings. -//| Check the `frequency` attribute for the actual clock rate. -//| :param int polarity: the base state of the clock line (0 or 1) -//| :param int phase: the edge of the clock that data is captured. First (0) -//| or second (1). Rising or falling depends on clock polarity. -//| :param int bits: the number of bits per word +//| .. note:: On the SAMD21, it is possible to set the baudrate to 24 MHz, but that +//| speed is not guaranteed to work. 12 MHz is the next available lower speed, and is +//| within spec for the SAMD21. //| -//| .. note:: On the SAMD21, it is possible to set the baudrate to 24 MHz, but that -//| speed is not guaranteed to work. 12 MHz is the next available lower speed, and is -//| within spec for the SAMD21. -//| -//| .. note:: On the nRF52840, these baudrates are available: 125kHz, 250kHz, 1MHz, 2MHz, 4MHz, -//| and 8MHz. -//| If you pick a a baudrate other than one of these, the nearest lower -//| baudrate will be chosen, with a minimum of 125kHz. -//| Two SPI objects may be created, except on the Circuit Playground Bluefruit, -//| which allows only one (to allow for an additional I2C object). -//| -// def configure(self, *, baudrate: int = 100000, polarity: int = 0, phase: int = 0, bits: int = 8) -> Any: ... +//| .. note:: On the nRF52840, these baudrates are available: 125kHz, 250kHz, 1MHz, 2MHz, 4MHz, +//| and 8MHz. +//| If you pick a a baudrate other than one of these, the nearest lower +//| baudrate will be chosen, with a minimum of 125kHz. +//| Two SPI objects may be created, except on the Circuit Playground Bluefruit, +//| which allows only one (to allow for an additional I2C object).""" +//| ... + STATIC mp_obj_t busio_spi_configure(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { enum { ARG_baudrate, ARG_polarity, ARG_phase, ARG_bits }; static const mp_arg_t allowed_args[] = { @@ -205,25 +198,23 @@ STATIC mp_obj_t busio_spi_configure(size_t n_args, const mp_obj_t *pos_args, mp_ } MP_DEFINE_CONST_FUN_OBJ_KW(busio_spi_configure_obj, 1, busio_spi_configure); -//| .. method:: try_lock() +//| def try_lock(self, ) -> Any: +//| """Attempts to grab the SPI lock. Returns True on success. //| -//| Attempts to grab the SPI lock. Returns True on success. -//| -//| :return: True when lock has been grabbed -//| :rtype: bool -//| -// def try_lock(self, ) -> Any: ... +//| :return: True when lock has been grabbed +//| :rtype: bool""" +//| ... + STATIC mp_obj_t busio_spi_obj_try_lock(mp_obj_t self_in) { busio_spi_obj_t *self = MP_OBJ_TO_PTR(self_in); return mp_obj_new_bool(common_hal_busio_spi_try_lock(self)); } MP_DEFINE_CONST_FUN_OBJ_1(busio_spi_try_lock_obj, busio_spi_obj_try_lock); -//| .. method:: unlock() -//| -//| Releases the SPI lock. -//| -// def unlock(self, ) -> Any: ... +//| def unlock(self, ) -> Any: +//| """Releases the SPI lock.""" +//| ... + STATIC mp_obj_t busio_spi_obj_unlock(mp_obj_t self_in) { busio_spi_obj_t *self = MP_OBJ_TO_PTR(self_in); check_for_deinit(self); @@ -232,16 +223,15 @@ STATIC mp_obj_t busio_spi_obj_unlock(mp_obj_t self_in) { } MP_DEFINE_CONST_FUN_OBJ_1(busio_spi_unlock_obj, busio_spi_obj_unlock); -//| .. method:: write(buffer, *, start=0, end=None) +//| def write(self, buffer: bytearray, *, start: Any = 0, end: int = None) -> Any: ... +//| """Write the data contained in ``buffer``. The SPI object must be locked. +//| If the buffer is empty, nothing happens. //| -//| Write the data contained in ``buffer``. The SPI object must be locked. -//| If the buffer is empty, nothing happens. -//| -//| :param bytearray buffer: Write out the data in this buffer -//| :param int start: Start of the slice of ``buffer`` to write out: ``buffer[start:end]`` -//| :param int end: End of the slice; this index is not included. Defaults to ``len(buffer)`` -//| -// def write(self, buffer: bytearray, *, start: Any = 0, end: int = None) -> Any: ... +//| :param bytearray buffer: Write out the data in this buffer +//| :param int start: Start of the slice of ``buffer`` to write out: ``buffer[start:end]`` +//| :param int end: End of the slice; this index is not included. Defaults to ``len(buffer)``""" +//| ... + STATIC mp_obj_t busio_spi_write(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { enum { ARG_buffer, ARG_start, ARG_end }; static const mp_arg_t allowed_args[] = { @@ -274,18 +264,17 @@ STATIC mp_obj_t busio_spi_write(size_t n_args, const mp_obj_t *pos_args, mp_map_ MP_DEFINE_CONST_FUN_OBJ_KW(busio_spi_write_obj, 2, busio_spi_write); -//| .. method:: readinto(buffer, *, start=0, end=None, write_value=0) +//| def readinto(self, buffer: bytearray, *, start: Any = 0, end: int = None, write_value: int = 0) -> Any: +//| """Read into ``buffer`` while writing ``write_value`` for each byte read. +//| The SPI object must be locked. +//| If the number of bytes to read is 0, nothing happens. //| -//| Read into ``buffer`` while writing ``write_value`` for each byte read. -//| The SPI object must be locked. -//| If the number of bytes to read is 0, nothing happens. -//| -//| :param bytearray buffer: Read data into this buffer -//| :param int start: Start of the slice of ``buffer`` to read into: ``buffer[start:end]`` -//| :param int end: End of the slice; this index is not included. Defaults to ``len(buffer)`` -//| :param int write_value: Value to write while reading. (Usually ignored.) -//| -// def readinto(self, buffer: bytearray, *, start: Any = 0, end: int = None, write_value: int = 0) -> Any: ... +//| :param bytearray buffer: Read data into this buffer +//| :param int start: Start of the slice of ``buffer`` to read into: ``buffer[start:end]`` +//| :param int end: End of the slice; this index is not included. Defaults to ``len(buffer)`` +//| :param int write_value: Value to write while reading. (Usually ignored.)""" +//| ... + STATIC mp_obj_t busio_spi_readinto(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { enum { ARG_buffer, ARG_start, ARG_end, ARG_write_value }; static const mp_arg_t allowed_args[] = { @@ -318,22 +307,21 @@ STATIC mp_obj_t busio_spi_readinto(size_t n_args, const mp_obj_t *pos_args, mp_m } MP_DEFINE_CONST_FUN_OBJ_KW(busio_spi_readinto_obj, 2, busio_spi_readinto); -//| .. method:: write_readinto(buffer_out, buffer_in, *, out_start=0, out_end=None, in_start=0, in_end=None) +//| def write_readinto(self, buffer_out: bytearray, buffer_in: bytearray, *, out_start: Any = 0, out_end: int = None, in_start: Any = 0, in_end: int = None) -> Any: +//| """Write out the data in ``buffer_out`` while simultaneously reading data into ``buffer_in``. +//| The SPI object must be locked. +//| The lengths of the slices defined by ``buffer_out[out_start:out_end]`` and ``buffer_in[in_start:in_end]`` +//| must be equal. +//| If buffer slice lengths are both 0, nothing happens. //| -//| Write out the data in ``buffer_out`` while simultaneously reading data into ``buffer_in``. -//| The SPI object must be locked. -//| The lengths of the slices defined by ``buffer_out[out_start:out_end]`` and ``buffer_in[in_start:in_end]`` -//| must be equal. -//| If buffer slice lengths are both 0, nothing happens. -//| -//| :param bytearray buffer_out: Write out the data in this buffer -//| :param bytearray buffer_in: Read data into this buffer -//| :param int out_start: Start of the slice of buffer_out to write out: ``buffer_out[out_start:out_end]`` -//| :param int out_end: End of the slice; this index is not included. Defaults to ``len(buffer_out)`` -//| :param int in_start: Start of the slice of ``buffer_in`` to read into: ``buffer_in[in_start:in_end]`` -//| :param int in_end: End of the slice; this index is not included. Defaults to ``len(buffer_in)`` -//| -// def write_readinto(self, buffer_out: bytearray, buffer_in: bytearray, *, out_start: Any = 0, out_end: int = None, in_start: Any = 0, in_end: int = None) -> Any: ... +//| :param bytearray buffer_out: Write out the data in this buffer +//| :param bytearray buffer_in: Read data into this buffer +//| :param int out_start: Start of the slice of buffer_out to write out: ``buffer_out[out_start:out_end]`` +//| :param int out_end: End of the slice; this index is not included. Defaults to ``len(buffer_out)`` +//| :param int in_start: Start of the slice of ``buffer_in`` to read into: ``buffer_in[in_start:in_end]`` +//| :param int in_end: End of the slice; this index is not included. Defaults to ``len(buffer_in)``""" +//| ... + STATIC mp_obj_t busio_spi_write_readinto(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { enum { ARG_buffer_out, ARG_buffer_in, ARG_out_start, ARG_out_end, ARG_in_start, ARG_in_end }; static const mp_arg_t allowed_args[] = { @@ -381,12 +369,11 @@ STATIC mp_obj_t busio_spi_write_readinto(size_t n_args, const mp_obj_t *pos_args } MP_DEFINE_CONST_FUN_OBJ_KW(busio_spi_write_readinto_obj, 2, busio_spi_write_readinto); -//| .. attribute:: frequency -//| -//| The actual SPI bus frequency. This may not match the frequency requested -//| due to internal limitations. -//| -// frequency: Any = ... +//| frequency: Any = +//| """The actual SPI bus frequency. This may not match the frequency requested +//| due to internal limitations.""" +//| ... + STATIC mp_obj_t busio_spi_obj_get_frequency(mp_obj_t self_in) { busio_spi_obj_t *self = MP_OBJ_TO_PTR(self_in); check_for_deinit(self);