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Added inline pyi to I2C.c

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dherrada 2020-04-25 15:07:58 -04:00
parent 55bdee688f
commit 28430a9919
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1 changed files with 90 additions and 101 deletions
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191
shared-bindings/busio/I2C.c
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@ -36,34 +36,33 @@
#include "py/runtime.h"
#include "supervisor/shared/translate.h"
//| .. currentmodule:: busio
//|class I2C:
//| """.. currentmodule:: busio
//|
//| :class:`I2C` --- Two wire serial protocol
//| ------------------------------------------
//| :class:`I2C` --- Two wire serial protocol
//| ------------------------------------------"""
//| def __init__(self, scl: microcontroller.Pin, sda: microcontroller.Pin, *, frequency: int = 400000, timeout: int = 255):
//| """I2C is a two-wire protocol for communicating between devices. At the
//| physical level it consists of 2 wires: SCL and SDA, the clock and data
//| lines respectively.
//|
//| .. class:: I2C(scl, sda, *, frequency=400000, timeout=255)
//| .. seealso:: Using this class directly requires careful lock management.
//| Instead, use :class:`~adafruit_bus_device.i2c_device.I2CDevice` to
//| manage locks.
//|
//| I2C is a two-wire protocol for communicating between devices. At the
//| physical level it consists of 2 wires: SCL and SDA, the clock and data
//| lines respectively.
//| .. seealso:: Using this class to directly read registers requires manual
//| bit unpacking. Instead, use an existing driver or make one with
//| :ref:`Register <register-module-reference>` data descriptors.
//|
//| .. seealso:: Using this class directly requires careful lock management.
//| Instead, use :class:`~adafruit_bus_device.i2c_device.I2CDevice` 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 <register-module-reference>` data descriptors.
//|
//| :param ~microcontroller.Pin scl: The clock pin
//| :param ~microcontroller.Pin sda: The data pin
//| :param int frequency: The clock frequency in Hertz
//| :param int timeout: The maximum clock stretching timeut - (used only for bitbangio.I2C; ignored for busio.I2C)
//|
//| .. note:: On the nRF52840, only one I2C object may be created,
//| except on the Circuit Playground Bluefruit, which allows two,
//| one for the onboard accelerometer, and one for offboard use.
//| :param ~microcontroller.Pin scl: The clock pin
//| :param ~microcontroller.Pin sda: The data pin
//| :param int frequency: The clock frequency in Hertz
//| :param int timeout: The maximum clock stretching timeut - (used only for bitbangio.I2C; ignored for busio.I2C)
//|
//| .. note:: On the nRF52840, only one I2C object may be created,
//| except on the Circuit Playground Bluefruit, which allows two,
//| one for the onboard accelerometer, and one for offboard use."""
//| ...
STATIC mp_obj_t busio_i2c_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
busio_i2c_obj_t *self = m_new_obj(busio_i2c_obj_t);
self->base.type = &busio_i2c_type;
@ -84,10 +83,9 @@ STATIC mp_obj_t busio_i2c_make_new(const mp_obj_type_t *type, size_t n_args, con
return (mp_obj_t)self;
}
//| .. method:: deinit()
//|
//| Releases control of the underlying hardware so other classes can use it.
//|
//| def deinit(self, ) -> Any:
//| """Releases control of the underlying hardware so other classes can use it."""
//| ...
STATIC mp_obj_t busio_i2c_obj_deinit(mp_obj_t self_in) {
busio_i2c_obj_t *self = MP_OBJ_TO_PTR(self_in);
common_hal_busio_i2c_deinit(self);
@ -101,17 +99,15 @@ STATIC void check_for_deinit(busio_i2c_obj_t *self) {
}
}
//| .. method:: __enter__()
//|
//| No-op used in Context Managers.
//|
//| def __enter__(self, ) -> Any:
//| """No-op used in Context Managers."""
//| ...
// Provided by context manager helper.
//| .. method:: __exit__()
//|
//| Automatically deinitializes the hardware on context exit. See
//| :ref:`lifetime-and-contextmanagers` for more info.
//|
//| def __exit__(self, ) -> Any:
//| """Automatically deinitializes the hardware on context exit. See
//| :ref:`lifetime-and-contextmanagers` for more info."""
//| ...
STATIC mp_obj_t busio_i2c_obj___exit__(size_t n_args, const mp_obj_t *args) {
(void)n_args;
common_hal_busio_i2c_deinit(args[0]);
@ -126,14 +122,13 @@ static void check_lock(busio_i2c_obj_t *self) {
}
}
//| .. method:: scan()
//|
//| Scan all I2C addresses between 0x08 and 0x77 inclusive and return a
//| list of those that respond.
//|
//| :return: List of device ids on the I2C bus
//| :rtype: list
//| def scan(self, ) -> Any:
//| """Scan all I2C addresses between 0x08 and 0x77 inclusive and return a
//| list of those that respond.
//|
//| :return: List of device ids on the I2C bus
//| :rtype: list"""
//| ...
STATIC mp_obj_t busio_i2c_scan(mp_obj_t self_in) {
busio_i2c_obj_t *self = MP_OBJ_TO_PTR(self_in);
check_for_deinit(self);
@ -150,13 +145,11 @@ STATIC mp_obj_t busio_i2c_scan(mp_obj_t self_in) {
}
MP_DEFINE_CONST_FUN_OBJ_1(busio_i2c_scan_obj, busio_i2c_scan);
//| .. method:: try_lock()
//|
//| Attempts to grab the I2C lock. Returns True on success.
//|
//| :return: True when lock has been grabbed
//| :rtype: bool
//|
//| def try_lock(self, ) -> Any:
//| """Attempts to grab the I2C lock. Returns True on success.
//| :return: True when lock has been grabbed
//| :rtype: bool"""
//| ...
STATIC mp_obj_t busio_i2c_obj_try_lock(mp_obj_t self_in) {
busio_i2c_obj_t *self = MP_OBJ_TO_PTR(self_in);
check_for_deinit(self);
@ -164,10 +157,9 @@ STATIC mp_obj_t busio_i2c_obj_try_lock(mp_obj_t self_in) {
}
MP_DEFINE_CONST_FUN_OBJ_1(busio_i2c_try_lock_obj, busio_i2c_obj_try_lock);
//| .. method:: unlock()
//|
//| Releases the I2C lock.
//|
//| def unlock(self, ) -> Any:
//| """Releases the I2C lock."""
//| ...
STATIC mp_obj_t busio_i2c_obj_unlock(mp_obj_t self_in) {
busio_i2c_obj_t *self = MP_OBJ_TO_PTR(self_in);
check_for_deinit(self);
@ -176,21 +168,20 @@ STATIC mp_obj_t busio_i2c_obj_unlock(mp_obj_t self_in) {
}
MP_DEFINE_CONST_FUN_OBJ_1(busio_i2c_unlock_obj, busio_i2c_obj_unlock);
//| .. method:: readfrom_into(address, buffer, *, start=0, end=None)
//| def readfrom_into(self, address: int, buffer: bytearray, *, start: int = 0, end: int = None) -> Any:
//| """Read into ``buffer`` from the slave specified by ``address``.
//| The number of bytes read will be the length of ``buffer``.
//| At least one byte must be read.
//|
//| Read into ``buffer`` from the slave specified by ``address``.
//| The number of bytes read will be the length of ``buffer``.
//| At least one byte must be read.
//|
//| If ``start`` or ``end`` is provided, then the buffer will be sliced
//| as if ``buffer[start:end]``. This will not cause an allocation like
//| ``buf[start:end]`` will so it saves memory.
//|
//| :param int address: 7-bit device address
//| :param bytearray buffer: buffer to write into
//| :param int start: Index to start writing at
//| :param int end: Index to write up to but not include. Defaults to ``len(buffer)``
//| If ``start`` or ``end`` is provided, then the buffer will be sliced
//| as if ``buffer[start:end]``. This will not cause an allocation like
//| ``buf[start:end]`` will so it saves memory.
//|
//| :param int address: 7-bit device address
//| :param bytearray buffer: buffer to write into
//| :param int start: Index to start writing at
//| :param int end: Index to write up to but not include. Defaults to ``len(buffer)``"""
//| ...
// Shared arg parsing for readfrom_into and writeto_then_readfrom.
STATIC void readfrom(busio_i2c_obj_t *self, mp_int_t address, mp_obj_t buffer, int32_t start, mp_int_t end) {
mp_buffer_info_t bufinfo;
@ -228,27 +219,26 @@ STATIC mp_obj_t busio_i2c_readfrom_into(size_t n_args, const mp_obj_t *pos_args,
}
MP_DEFINE_CONST_FUN_OBJ_KW(busio_i2c_readfrom_into_obj, 3, busio_i2c_readfrom_into);
//| .. method:: writeto(address, buffer, *, start=0, end=None, stop=True)
//| def writeto(self, address: int, buffer: bytearray, *, start: int = 0, end: int = None, stop: bool = True) -> Any:
//| """Write the bytes from ``buffer`` to the slave specified by ``address``.
//| Transmits a stop bit when stop is True. Setting stop=False is deprecated and stop will be
//| removed in CircuitPython 6.x. Use `writeto_then_readfrom` when needing a write, no stop and
//| repeated start before a read.
//|
//| Write the bytes from ``buffer`` to the slave specified by ``address``.
//| Transmits a stop bit when stop is True. Setting stop=False is deprecated and stop will be
//| removed in CircuitPython 6.x. Use `writeto_then_readfrom` when needing a write, no stop and
//| repeated start before a read.
//| If ``start`` or ``end`` is provided, then the buffer will be sliced
//| as if ``buffer[start:end]``. This will not cause an allocation like
//| ``buffer[start:end]`` will so it saves memory.
//|
//| If ``start`` or ``end`` is provided, then the buffer will be sliced
//| as if ``buffer[start:end]``. This will not cause an allocation like
//| ``buffer[start:end]`` will so it saves memory.
//|
//| Writing a buffer or slice of length zero is permitted, as it can be used
//| to poll for the existence of a device.
//|
//| :param int address: 7-bit device address
//| :param bytearray buffer: buffer containing the bytes to write
//| :param int start: Index to start writing from
//| :param int end: Index to read up to but not include. Defaults to ``len(buffer)``
//| :param bool stop: If true, output an I2C stop condition after the buffer is written.
//| Deprecated. Will be removed in 6.x and act as stop=True.
//| Writing a buffer or slice of length zero is permitted, as it can be used
//| to poll for the existence of a device.
//|
//| :param int address: 7-bit device address
//| :param bytearray buffer: buffer containing the bytes to write
//| :param int start: Index to start writing from
//| :param int end: Index to read up to but not include. Defaults to ``len(buffer)``
//| :param bool stop: If true, output an I2C stop condition after the buffer is written.
//| Deprecated. Will be removed in 6.x and act as stop=True."""
//| ...
// Shared arg parsing for writeto and writeto_then_readfrom.
STATIC void writeto(busio_i2c_obj_t *self, mp_int_t address, mp_obj_t buffer, int32_t start, mp_int_t end, bool stop) {
// get the buffer to write the data from
@ -287,24 +277,23 @@ STATIC mp_obj_t busio_i2c_writeto(size_t n_args, const mp_obj_t *pos_args, mp_ma
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(busio_i2c_writeto_obj, 1, busio_i2c_writeto);
//| .. method:: writeto_then_readfrom(address, out_buffer, in_buffer, *, out_start=0, out_end=None, in_start=0, in_end=None)
//| def writeto_then_readfrom(self, address: int, out_buffer: bytearray, in_buffer: bytearray, *, out_start: int = 0, out_end: int = None, in_start: int = 0, in_end: int = None) -> Any:
//| """Write the bytes from ``out_buffer`` to the slave specified by ``address``, generate no stop
//| bit, generate a repeated start and read into ``in_buffer``. ``out_buffer`` and
//| ``in_buffer`` can be the same buffer because they are used sequentially.
//|
//| Write the bytes from ``out_buffer`` to the slave specified by ``address``, generate no stop
//| bit, generate a repeated start and read into ``in_buffer``. ``out_buffer`` and
//| ``in_buffer`` can be the same buffer because they are used sequentially.
//|
//| If ``start`` or ``end`` is provided, then the corresponding buffer will be sliced
//| as if ``buffer[start:end]``. This will not cause an allocation like ``buf[start:end]``
//| will so it saves memory.
//|
//| :param int address: 7-bit device address
//| :param bytearray out_buffer: buffer containing the bytes to write
//| :param bytearray in_buffer: buffer to write into
//| :param int out_start: Index to start writing from
//| :param int out_end: Index to read up to but not include. Defaults to ``len(buffer)``
//| :param int in_start: Index to start writing at
//| :param int in_end: Index to write up to but not include. Defaults to ``len(buffer)``
//| If ``start`` or ``end`` is provided, then the corresponding buffer will be sliced
//| as if ``buffer[start:end]``. This will not cause an allocation like ``buf[start:end]``
//| will so it saves memory.
//|
//| :param int address: 7-bit device address
//| :param bytearray out_buffer: buffer containing the bytes to write
//| :param bytearray in_buffer: buffer to write into
//| :param int out_start: Index to start writing from
//| :param int out_end: Index to read up to but not include. Defaults to ``len(buffer)``
//| :param int in_start: Index to start writing at
//| :param int in_end: Index to write up to but not include. Defaults to ``len(buffer)``"""
//| ...
STATIC mp_obj_t busio_i2c_writeto_then_readfrom(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_address, ARG_out_buffer, ARG_in_buffer, ARG_out_start, ARG_out_end, ARG_in_start, ARG_in_end };
static const mp_arg_t allowed_args[] = {