add circuitpython code

1 files changed, 288 insertions, 0 deletions

diff --git a/circuitpython/shared-bindings/adafruit_bus_device/i2c_device/I2CDevice.c b/circuitpython/shared-bindings/adafruit_bus_device/i2c_device/I2CDevice.c
new file mode 100644
index 0000000..327e8e7
--- /dev/null
+++ b/circuitpython/shared-bindings/adafruit_bus_device/i2c_device/I2CDevice.c
@@ -0,0 +1,288 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Mark Komus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+// This file contains all of the Python API definitions for the
+// busio.I2C class.
+
+#include "shared-bindings/microcontroller/Pin.h"
+#include "shared-bindings/adafruit_bus_device/i2c_device/I2CDevice.h"
+#include "shared-bindings/util.h"
+#include "shared-module/adafruit_bus_device/i2c_device/I2CDevice.h"
+
+#include "shared/runtime/buffer_helper.h"
+#include "shared/runtime/context_manager_helpers.h"
+#include "py/runtime.h"
+#include "py/smallint.h"
+#include "supervisor/shared/translate.h"
+
+
+//| class I2CDevice:
+//|     """I2C Device Manager"""
+//|
+//|     def __init__(self, i2c: busio.I2C, device_address: int, probe: bool = True) -> None:
+//|
+//|         """Represents a single I2C device and manages locking the bus and the device
+//|         address.
+//|
+//|         :param ~busio.I2C i2c: The I2C bus the device is on
+//|         :param int device_address: The 7 bit device address
+//|         :param bool probe: Probe for the device upon object creation, default is true
+//|
+//|         Example::
+//|
+//|             import busio
+//|             from board import *
+//|             from adafruit_bus_device.i2c_device import I2CDevice
+//|             with busio.I2C(SCL, SDA) as i2c:
+//|                 device = I2CDevice(i2c, 0x70)
+//|                 bytes_read = bytearray(4)
+//|                 with device:
+//|                     device.readinto(bytes_read)
+//|                 # A second transaction
+//|                 with device:
+//|                     device.write(bytes_read)
+//|     """
+//|     ...
+//|
+STATIC mp_obj_t adafruit_bus_device_i2cdevice_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
+    adafruit_bus_device_i2cdevice_obj_t *self = m_new_obj(adafruit_bus_device_i2cdevice_obj_t);
+    self->base.type = &adafruit_bus_device_i2cdevice_type;
+    enum { ARG_i2c, ARG_device_address, ARG_probe };
+    static const mp_arg_t allowed_args[] = {
+        { MP_QSTR_i2c, MP_ARG_REQUIRED | MP_ARG_OBJ },
+        { MP_QSTR_device_address, MP_ARG_REQUIRED | MP_ARG_INT },
+        { MP_QSTR_probe, MP_ARG_BOOL, {.u_bool = true} },
+    };
+    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
+    mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
+
+    mp_obj_t *i2c = args[ARG_i2c].u_obj;
+
+    common_hal_adafruit_bus_device_i2cdevice_construct(MP_OBJ_TO_PTR(self), i2c, args[ARG_device_address].u_int);
+    if (args[ARG_probe].u_bool == true) {
+        common_hal_adafruit_bus_device_i2cdevice_probe_for_device(self);
+    }
+
+    return (mp_obj_t)self;
+}
+
+//|     def __enter__(self) -> I2CDevice:
+//|         """Context manager entry to lock bus."""
+//|         ...
+//|
+STATIC mp_obj_t adafruit_bus_device_i2cdevice_obj___enter__(mp_obj_t self_in) {
+    adafruit_bus_device_i2cdevice_obj_t *self = MP_OBJ_TO_PTR(self_in);
+    common_hal_adafruit_bus_device_i2cdevice_lock(self);
+    return self;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(adafruit_bus_device_i2cdevice___enter___obj, adafruit_bus_device_i2cdevice_obj___enter__);
+
+//|     def __exit__(self) -> None:
+//|         """Automatically unlocks the bus on exit."""
+//|         ...
+//|
+STATIC mp_obj_t adafruit_bus_device_i2cdevice_obj___exit__(size_t n_args, const mp_obj_t *args) {
+    common_hal_adafruit_bus_device_i2cdevice_unlock(MP_OBJ_TO_PTR(args[0]));
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(adafruit_bus_device_i2cdevice___exit___obj, 4, 4, adafruit_bus_device_i2cdevice_obj___exit__);
+
+//|     import sys
+//|     def readinto(self, buffer: WriteableBuffer, *, start: int = 0, end: int = sys.maxsize) -> None:
+//|         """Read into ``buffer`` from the device.
+//|
+//|         If ``start`` or ``end`` is provided, then the buffer will be sliced
+//|         as if ``buffer[start:end]`` were passed.
+//|         The number of bytes read will be the length of ``buffer[start:end]``.
+//|
+//|         :param WriteableBuffer buffer: read bytes into this buffer
+//|         :param int start: beginning of buffer slice
+//|         :param int end: end of buffer slice; if not specified, use ``len(buffer)``
+//|         """
+//|         ...
+//|
+STATIC mp_obj_t adafruit_bus_device_i2cdevice_readinto(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[] = {
+        { MP_QSTR_buffer,     MP_ARG_REQUIRED | MP_ARG_OBJ },
+        { MP_QSTR_start,      MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
+        { MP_QSTR_end,        MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = INT_MAX} },
+    };
+
+    adafruit_bus_device_i2cdevice_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
+
+    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
+    mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
+
+    mp_obj_t dest[8];
+    uint8_t num_kws = 1;
+
+    mp_load_method(self->i2c, MP_QSTR_readfrom_into, dest);
+    dest[2] = MP_OBJ_NEW_SMALL_INT(self->device_address);
+    dest[3] = args[ARG_buffer].u_obj;
+    // dest[4] = mp_obj_new_str("start", 5);
+    dest[4] = MP_OBJ_NEW_QSTR(MP_QSTR_start);
+    dest[5] = MP_OBJ_NEW_SMALL_INT(args[ARG_start].u_int);
+    if (args[ARG_end].u_int != INT_MAX) {
+        dest[6] = MP_OBJ_NEW_QSTR(MP_QSTR_end);
+        dest[7] = MP_OBJ_NEW_SMALL_INT(args[ARG_end].u_int);
+        num_kws++;
+    }
+    mp_call_method_n_kw(2, num_kws, dest);
+
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_KW(adafruit_bus_device_i2cdevice_readinto_obj, 1, adafruit_bus_device_i2cdevice_readinto);
+
+//|     import sys
+//|     def write(self, buffer: ReadableBuffer, *, start: int = 0, end: int = sys.maxsize) -> None:
+//|         """Write the bytes from ``buffer`` to the device, then transmit a stop bit.
+//|
+//|         If ``start`` or ``end`` is provided, then the buffer will be sliced
+//|         as if ``buffer[start:end]`` were passed, but without copying the data.
+//|         The number of bytes written will be the length of ``buffer[start:end]``.
+//|
+//|         :param ReadableBuffer buffer: write out bytes from this buffer
+//|         :param int start: beginning of buffer slice
+//|         :param int end: end of buffer slice; if not specified, use ``len(buffer)``
+//|         """
+//|         ...
+//|
+STATIC mp_obj_t adafruit_bus_device_i2cdevice_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[] = {
+        { MP_QSTR_buffer,     MP_ARG_REQUIRED | MP_ARG_OBJ },
+        { MP_QSTR_start,      MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
+        { MP_QSTR_end,        MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = INT_MAX} },
+    };
+    adafruit_bus_device_i2cdevice_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
+
+    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
+    mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
+
+    mp_obj_t dest[8];
+    uint8_t num_kws = 1;
+
+    mp_load_method(self->i2c, MP_QSTR_writeto, dest);
+    dest[2] = MP_OBJ_NEW_SMALL_INT(self->device_address);
+    dest[3] = args[ARG_buffer].u_obj;
+    dest[4] = MP_OBJ_NEW_QSTR(MP_QSTR_start);
+    dest[5] = MP_OBJ_NEW_SMALL_INT(args[ARG_start].u_int);
+    if (args[ARG_end].u_int != INT_MAX) {
+        dest[6] = MP_OBJ_NEW_QSTR(MP_QSTR_end);
+        dest[7] = MP_OBJ_NEW_SMALL_INT(args[ARG_end].u_int);
+        num_kws++;
+    }
+
+    mp_call_method_n_kw(2, num_kws, dest);
+
+    return mp_const_none;
+}
+MP_DEFINE_CONST_FUN_OBJ_KW(adafruit_bus_device_i2cdevice_write_obj, 1, adafruit_bus_device_i2cdevice_write);
+
+
+//|     import sys
+//|     def write_then_readinto(self, out_buffer: ReadableBuffer, in_buffer: WriteableBuffer, *, out_start: int = 0, out_end: int = sys.maxsize, in_start: int = 0, in_end: int = sys.maxsize) -> None:
+//|         """Write the bytes from ``out_buffer`` to the device, then immediately
+//|         reads into ``in_buffer`` from the device.
+//|
+//|         If ``out_start`` or ``out_end`` is provided, then the buffer will be sliced
+//|         as if ``out_buffer[out_start:out_end]`` were passed, but without copying the data.
+//|         The number of bytes written will be the length of ``out_buffer[out_start:out_end]``.
+//|
+//|         If ``in_start`` or ``in_end`` is provided, then the input buffer will be sliced
+//|         as if ``in_buffer[in_start:in_end]`` were passed,
+//|         The number of bytes read will be the length of ``out_buffer[in_start:in_end]``.
+//|
+//|         :param ReadableBuffer out_buffer: write out bytes from this buffer
+//|         :param WriteableBuffer in_buffer: read bytes into this buffer
+//|         :param int out_start: beginning of ``out_buffer`` slice
+//|         :param int out_end: end of ``out_buffer`` slice; if not specified, use ``len(out_buffer)``
+//|         :param int in_start: beginning of ``in_buffer`` slice
+//|         :param int in_end: end of ``in_buffer slice``; if not specified, use ``len(in_buffer)``
+//|         """
+//|         ...
+//|
+STATIC mp_obj_t adafruit_bus_device_i2cdevice_write_then_readinto(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
+    enum { 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[] = {
+        { MP_QSTR_out_buffer,    MP_ARG_REQUIRED | MP_ARG_OBJ },
+        { MP_QSTR_in_buffer,     MP_ARG_REQUIRED | MP_ARG_OBJ },
+        { MP_QSTR_out_start,     MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
+        { MP_QSTR_out_end,       MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = INT_MAX} },
+        { MP_QSTR_in_start,      MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
+        { MP_QSTR_in_end,        MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = INT_MAX} },
+    };
+    adafruit_bus_device_i2cdevice_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
+
+    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
+    mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
+
+    mp_obj_t dest[13];
+    uint8_t num_kws = 2;
+    uint8_t index = 2;
+
+    mp_load_method(self->i2c, MP_QSTR_writeto_then_readfrom, dest);
+    dest[index++] = MP_OBJ_NEW_SMALL_INT(self->device_address);
+    dest[index++] = args[ARG_out_buffer].u_obj;
+    dest[index++] = args[ARG_in_buffer].u_obj;
+    dest[index++] = MP_OBJ_NEW_QSTR(MP_QSTR_out_start);
+    dest[index++] = MP_OBJ_NEW_SMALL_INT(args[ARG_out_start].u_int);
+    if (args[ARG_out_end].u_int != INT_MAX) {
+        dest[index++] = MP_OBJ_NEW_QSTR(MP_QSTR_out_end);
+        dest[index++] = MP_OBJ_NEW_SMALL_INT(args[ARG_out_end].u_int);
+        num_kws++;
+    }
+    dest[index++] = MP_OBJ_NEW_QSTR(MP_QSTR_in_start);
+    dest[index++] = MP_OBJ_NEW_SMALL_INT(args[ARG_in_start].u_int);
+    if (args[ARG_in_end].u_int != INT_MAX) {
+        dest[index++] = MP_OBJ_NEW_QSTR(MP_QSTR_in_end);
+        dest[index++] = MP_OBJ_NEW_SMALL_INT(args[ARG_in_end].u_int);
+        num_kws++;
+    }
+
+    mp_call_method_n_kw(3, num_kws, dest);
+
+    return mp_const_none;
+}
+MP_DEFINE_CONST_FUN_OBJ_KW(adafruit_bus_device_i2cdevice_write_then_readinto_obj, 1, adafruit_bus_device_i2cdevice_write_then_readinto);
+
+STATIC const mp_rom_map_elem_t adafruit_bus_device_i2cdevice_locals_dict_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&adafruit_bus_device_i2cdevice___enter___obj) },
+    { MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&adafruit_bus_device_i2cdevice___exit___obj) },
+    { MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&adafruit_bus_device_i2cdevice_readinto_obj) },
+    { MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&adafruit_bus_device_i2cdevice_write_obj) },
+    { MP_ROM_QSTR(MP_QSTR_write_then_readinto), MP_ROM_PTR(&adafruit_bus_device_i2cdevice_write_then_readinto_obj) },
+};
+
+STATIC MP_DEFINE_CONST_DICT(adafruit_bus_device_i2cdevice_locals_dict, adafruit_bus_device_i2cdevice_locals_dict_table);
+
+const mp_obj_type_t adafruit_bus_device_i2cdevice_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_I2CDevice,
+    .make_new = adafruit_bus_device_i2cdevice_make_new,
+    .locals_dict = (mp_obj_dict_t *)&adafruit_bus_device_i2cdevice_locals_dict,
+};