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gamblor21 2020-10-24 20:48:35 -05:00
parent c676385200
commit b637d3911e
10 changed files with 572 additions and 0 deletions
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5
py/circuitpy_defns.mk
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@ -133,6 +133,9 @@ endif
ifeq ($(CIRCUITPY_BOARD),1)
SRC_PATTERNS += board/%
endif
ifeq ($(CIRCUITPY_BUSDEVICE),1)
SRC_PATTERNS += busdevice/%
endif
ifeq ($(CIRCUITPY_BUSIO),1)
SRC_PATTERNS += busio/% bitbangio/OneWire.%
endif
@ -432,6 +435,8 @@ SRC_SHARED_MODULE_ALL = \
bitbangio/SPI.c \
bitbangio/__init__.c \
board/__init__.c \
busdevice/__init__.c \
busdevice/I2CDevice.c \
busio/OneWire.c \
displayio/Bitmap.c \
displayio/ColorConverter.c \

8
py/circuitpy_mpconfig.h
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@ -324,6 +324,13 @@ extern const struct _mp_obj_module_t board_module;
#define BOARD_UART_ROOT_POINTER
#endif
#if CIRCUITPY_BUSDEVICE
extern const struct _mp_obj_module_t busdevice_module;
#define BUSDEVICE_MODULE { MP_OBJ_NEW_QSTR(MP_QSTR_busdevice), (mp_obj_t)&busdevice_module },
#else
#define BUSDEVICE_MODULE
#endif
#if CIRCUITPY_BUSIO
extern const struct _mp_obj_module_t busio_module;
#define BUSIO_MODULE { MP_OBJ_NEW_QSTR(MP_QSTR_busio), (mp_obj_t)&busio_module },
@ -773,6 +780,7 @@ extern const struct _mp_obj_module_t wifi_module;
BITBANGIO_MODULE \
BLEIO_MODULE \
BOARD_MODULE \
BUSDEVICE_MODULE \
BUSIO_MODULE \
CAMERA_MODULE \
CANIO_MODULE \

3
py/circuitpy_mpconfig.mk
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@ -90,6 +90,9 @@ CFLAGS += -DCIRCUITPY_BLEIO=$(CIRCUITPY_BLEIO)
CIRCUITPY_BOARD ?= 1
CFLAGS += -DCIRCUITPY_BOARD=$(CIRCUITPY_BOARD)
CIRCUITPY_BUSDEVICE ?= 1
CFLAGS += -DCIRCUITPY_BUSDEVICE=$(CIRCUITPY_BUSDEVICE)
CIRCUITPY_BUSIO ?= 1
CFLAGS += -DCIRCUITPY_BUSIO=$(CIRCUITPY_BUSIO)

246
shared-bindings/busdevice/I2CDevice.c Normal file
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@ -0,0 +1,246 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Scott Shawcroft
*
* 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/busdevice/I2CDevice.h"
#include "shared-bindings/util.h"
#include "shared-module/busdevice/I2CDevice.h"
#include "lib/utils/buffer_helper.h"
#include "lib/utils/context_manager_helpers.h"
#include "py/runtime.h"
#include "supervisor/shared/translate.h"
//| class I2CDevice:
//| """Two wire serial protocol"""
//|
//| def __init__(self, i2c, device_address, probe=True) -> None:
//|
//| ...
//|
STATIC mp_obj_t busdevice_i2cdevice_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
busdevice_i2cdevice_obj_t *self = m_new_obj(busdevice_i2cdevice_obj_t);
self->base.type = &busdevice_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(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
busio_i2c_obj_t* i2c = args[ARG_i2c].u_obj;
common_hal_busdevice_i2cdevice_construct(self, i2c, args[ARG_device_address].u_int, args[ARG_probe].u_bool);
return (mp_obj_t)self;
}
//| def __enter__(self) -> None:
//| """Automatically initializes the hardware on context exit. See FIX
//| :ref:`lifetime-and-contextmanagers` for more info."""
//| ...
//|
STATIC mp_obj_t busdevice_i2cdevice_obj___enter__(mp_obj_t self_in) {
common_hal_busdevice_i2cdevice_lock(self_in);
return self_in;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(busdevice_i2cdevice___enter___obj, busdevice_i2cdevice_obj___enter__);
//| def __exit__(self) -> None:
//| """Automatically deinitializes the hardware on context exit. See
//| :ref:`lifetime-and-contextmanagers` for more info."""
//| ...
//|
STATIC mp_obj_t busdevice_i2cdevice_obj___exit__(size_t n_args, const mp_obj_t *args) {
common_hal_busdevice_i2cdevice_unlock(args[0]);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(busdevice_i2cdevice___exit___obj, 4, 4, busdevice_i2cdevice_obj___exit__);
STATIC void readinto(busdevice_i2cdevice_obj_t *self, mp_obj_t buffer, int32_t start, mp_int_t end) {
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(buffer, &bufinfo, MP_BUFFER_WRITE);
size_t length = bufinfo.len;
normalize_buffer_bounds(&start, end, &length);
if (length == 0) {
mp_raise_ValueError(translate("Buffer must be at least length 1"));
}
uint8_t status = common_hal_busdevice_i2cdevice_readinto(self, ((uint8_t*)bufinfo.buf) + start, length);
if (status != 0) {
mp_raise_OSError(status);
}
}
STATIC mp_obj_t busdevice_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, {.u_obj = MP_OBJ_NULL} },
{ 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} },
};
busdevice_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);
readinto(self, args[ARG_buffer].u_obj, args[ARG_start].u_int, args[ARG_end].u_int);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(busdevice_i2cdevice_readinto_obj, 2, busdevice_i2cdevice_readinto);
STATIC void write(busdevice_i2cdevice_obj_t *self, mp_obj_t buffer, int32_t start, mp_int_t end) {
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(buffer, &bufinfo, MP_BUFFER_READ);
size_t length = bufinfo.len;
normalize_buffer_bounds(&start, end, &length);
if (length == 0) {
mp_raise_ValueError(translate("Buffer must be at least length 1"));
}
uint8_t status = common_hal_busdevice_i2cdevice_write(self, ((uint8_t*)bufinfo.buf) + start, length);
if (status != 0) {
mp_raise_OSError(status);
}
}
STATIC mp_obj_t busdevice_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, {.u_obj = MP_OBJ_NULL} },
{ 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} },
};
busdevice_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);
write(self, args[ARG_buffer].u_obj, args[ARG_start].u_int, args[ARG_end].u_int);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_KW(busdevice_i2cdevice_write_obj, 2, busdevice_i2cdevice_write);
/*STATIC void write_then_readinto(busdevice_i2cdevice_obj_t *self, mp_obj_t out_buffer, mp_obj_t in_buffer,
int32_t out_start, mp_int_t out_end, int32_t in_start, mp_int_t in_end) {
mp_buffer_info_t out_bufinfo;
mp_get_buffer_raise(out_buffer, &out_bufinfo, MP_BUFFER_READ);
size_t out_length = out_bufinfo.len;
normalize_buffer_bounds(&out_start, out_end, &out_length);
if (out_length == 0) {
mp_raise_ValueError(translate("Buffer must be at least length 1"));
}
mp_buffer_info_t in_bufinfo;
mp_get_buffer_raise(in_buffer, &in_bufinfo, MP_BUFFER_WRITE);
size_t in_length = in_bufinfo.len;
normalize_buffer_bounds(&in_start, in_end, &in_length);
if (in_length == 0) {
mp_raise_ValueError(translate("Buffer must be at least length 1"));
}
uint8_t status = common_hal_busdevice_i2cdevice_write_then_readinto(self, out_buffer, in_buffer, out_length, in_length);
if (status != 0) {
mp_raise_OSError(status);
}
}*/
STATIC mp_obj_t busdevice_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, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_in_buffer, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ 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} },
};
busdevice_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);
write(self, args[ARG_out_buffer].u_obj, args[ARG_out_start].u_int, args[ARG_out_end].u_int);
readinto(self, args[ARG_in_buffer].u_obj, args[ARG_in_start].u_int, args[ARG_in_end].u_int);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_KW(busdevice_i2cdevice_write_then_readinto_obj, 3, busdevice_i2cdevice_write_then_readinto);
STATIC mp_obj_t busdevice_i2cdevice___probe_for_device(mp_obj_t self_in) {
//busdevice_i2cdevice_obj_t *self = self_in;
//common_hal_busdevice_i2cdevice_lock(self_in);
/*
uint8_t buffer;
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(&buffer, &bufinfo, MP_BUFFER_WRITE);
uint8_t status = common_hal_busdevice_i2cdevice_readinto(self_in, (uint8_t*)bufinfo.buf, 1);
if (status != 0) {
common_hal_busdevice_i2cdevice_unlock(self_in);
mp_raise_ValueError_varg(translate("No I2C device at address: %x"), self->device_address);
}
*/
//common_hal_busdevice_i2cdevice_unlock(self_in);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(busdevice_i2cdevice___probe_for_device_obj, busdevice_i2cdevice___probe_for_device);
STATIC const mp_rom_map_elem_t busdevice_i2cdevice_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&busdevice_i2cdevice___enter___obj) },
{ MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&busdevice_i2cdevice___exit___obj) },
{ MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&busdevice_i2cdevice_readinto_obj) },
{ MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&busdevice_i2cdevice_write_obj) },
{ MP_ROM_QSTR(MP_QSTR_write_then_readinto), MP_ROM_PTR(&busdevice_i2cdevice_write_then_readinto_obj) },
{ MP_ROM_QSTR(MP_QSTR___probe_for_device), MP_ROM_PTR(&busdevice_i2cdevice___probe_for_device_obj) },
};
STATIC MP_DEFINE_CONST_DICT(busdevice_i2cdevice_locals_dict, busdevice_i2cdevice_locals_dict_table);
const mp_obj_type_t busdevice_i2cdevice_type = {
{ &mp_type_type },
.name = MP_QSTR_I2CDevice,
.make_new = busdevice_i2cdevice_make_new,
.locals_dict = (mp_obj_dict_t*)&busdevice_i2cdevice_locals_dict,
};

58
shared-bindings/busdevice/I2CDevice.h Normal file
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@ -0,0 +1,58 @@
/*
* 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.
*/
// Machine is the HAL for low-level, hardware accelerated functions. It is not
// meant to simplify APIs, its only meant to unify them so that other modules
// do not require port specific logic.
//
// This file includes externs for all functions a port should implement to
// support the machine module.
#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_BUSDEVICE_I2CDEVICE_H
#define MICROPY_INCLUDED_SHARED_BINDINGS_BUSDEVICE_I2CDEVICE_H
#include "py/obj.h"
#include "common-hal/microcontroller/Pin.h"
#include "shared-module/busdevice/I2CDevice.h"
#include "shared-bindings/busio/I2C.h"
// Type object used in Python. Should be shared between ports.
extern const mp_obj_type_t busdevice_i2cdevice_type;
// Initializes the hardware peripheral.
extern void common_hal_busdevice_i2cdevice_construct(busdevice_i2cdevice_obj_t *self, busio_i2c_obj_t *i2c, uint8_t device_address, bool probe);
extern void common_hal_busdevice_i2cdevice___enter__(busdevice_i2cdevice_obj_t *self);
extern void common_hal_busdevice_i2cdevice___exit__(busdevice_i2cdevice_obj_t *self);
extern uint8_t common_hal_busdevice_i2cdevice_readinto(busdevice_i2cdevice_obj_t *self, mp_obj_t buffer, size_t length);
extern uint8_t common_hal_busdevice_i2cdevice_write(busdevice_i2cdevice_obj_t *self, mp_obj_t buffer, size_t length);
extern uint8_t common_hal_busdevice_i2cdevice_write_then_readinto(busdevice_i2cdevice_obj_t *self, mp_obj_t out_buffer,
mp_obj_t in_buffer, size_t out_length, size_t in_length);
extern uint8_t common_hal_busdevice_i2cdevice___probe_for_device(busdevice_i2cdevice_obj_t *self);
extern void common_hal_busdevice_i2cdevice_lock(busdevice_i2cdevice_obj_t *self);
extern void common_hal_busdevice_i2cdevice_unlock(busdevice_i2cdevice_obj_t *self);
#endif // MICROPY_INCLUDED_SHARED_BINDINGS_BUSDEVICE_I2CDEVICE_H

79
shared-bindings/busdevice/__init__.c Normal file
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@ -0,0 +1,79 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Scott Shawcroft for Adafruit Industries
*
* 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.
*/
#include <stdint.h>
#include "py/obj.h"
#include "py/runtime.h"
#include "py/mphal.h"
#include "py/objproperty.h"
#include "shared-bindings/busdevice/__init__.h"
#include "shared-bindings/busdevice/I2CDevice.h"
//| """Hardware accelerated external bus access
//|
//| The `busio` module contains classes to support a variety of serial
//| protocols.
//|
//| When the microcontroller does not support the behavior in a hardware
//| accelerated fashion it may internally use a bitbang routine. However, if
//| hardware support is available on a subset of pins but not those provided,
//| then a RuntimeError will be raised. Use the `bitbangio` module to explicitly
//| bitbang a serial protocol on any general purpose pins.
//|
//| All classes change hardware state and should be deinitialized when they
//| are no longer needed if the program continues after use. To do so, either
//| call :py:meth:`!deinit` or use a context manager. See
//| :ref:`lifetime-and-contextmanagers` for more info.
//|
//| For example::
//|
//| import busio
//| from board import *
//|
//| i2c = busio.I2C(SCL, SDA)
//| print(i2c.scan())
//| i2c.deinit()
//|
//| This example will initialize the the device, run
//| :py:meth:`~busio.I2C.scan` and then :py:meth:`~busio.I2C.deinit` the
//| hardware. The last step is optional because CircuitPython automatically
//| resets hardware after a program finishes."""
//|
STATIC const mp_rom_map_elem_t busdevice_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_busdevice) },
{ MP_ROM_QSTR(MP_QSTR_I2CDevice), MP_ROM_PTR(&busdevice_i2cdevice_type) },
};
STATIC MP_DEFINE_CONST_DICT(busdevice_module_globals, busdevice_module_globals_table);
const mp_obj_module_t busdevice_module = {
.base = { &mp_type_module },
.globals = (mp_obj_dict_t*)&busdevice_module_globals,
};

32
shared-bindings/busdevice/__init__.h Normal file
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/*
* 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.
*/
#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_BUSDEVICE___INIT___H
#define MICROPY_INCLUDED_SHARED_BINDINGS_BUSDEVICE___INIT___H
// Nothing now.
#endif // MICROPY_INCLUDED_SHARED_BINDINGS_BUSDEVICE___INIT___H

101
shared-module/busdevice/I2CDevice.c Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
*
* 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.
*/
#include "shared-bindings/busdevice/I2CDevice.h"
#include "shared-bindings/busio/I2C.h"
#include "py/mperrno.h"
#include "py/nlr.h"
void common_hal_busdevice_i2cdevice_construct(busdevice_i2cdevice_obj_t *self, busio_i2c_obj_t *i2c, uint8_t device_address, bool probe) {
self->i2c = i2c;
self->device_address = device_address;
self->probe = probe;
if (self->probe == true) {
common_hal_busdevice_i2cdevice___probe_for_device(self);
}
}
void common_hal_busdevice_i2cdevice_lock(busdevice_i2cdevice_obj_t *self) {
bool success = false;
while (!success) {
success = common_hal_busio_i2c_try_lock(self->i2c);
}
}
void common_hal_busdevice_i2cdevice_unlock(busdevice_i2cdevice_obj_t *self) {
common_hal_busio_i2c_unlock(self->i2c);
}
uint8_t common_hal_busdevice_i2cdevice_readinto(busdevice_i2cdevice_obj_t *self, mp_obj_t buffer, size_t length) {
uint8_t status = common_hal_busio_i2c_read(self->i2c, self->device_address, buffer, length);
return status;
}
uint8_t common_hal_busdevice_i2cdevice_write(busdevice_i2cdevice_obj_t *self, mp_obj_t buffer, size_t length) {
uint8_t status = common_hal_busio_i2c_write(self->i2c, self->device_address, buffer, length, true);
return status;
}
uint8_t common_hal_busdevice_i2cdevice_write_then_readinto(busdevice_i2cdevice_obj_t *self, mp_obj_t out_buffer, mp_obj_t in_buffer,
size_t out_length, size_t in_length) {
uint8_t status = 0;
status = common_hal_busio_i2c_write(self->i2c, self->device_address, out_buffer, out_length, true);
status = common_hal_busio_i2c_read(self->i2c, self->device_address, in_buffer, in_length);
return status;
}
uint8_t common_hal_busdevice_i2cdevice___probe_for_device(busdevice_i2cdevice_obj_t *self) {
// write ""
/*
while not self.i2c.try_lock():
pass
try:
self.i2c.writeto(self.device_address, b"")
except OSError:
# some OS's dont like writing an empty bytesting...
# Retry by reading a byte
try:
result = bytearray(1)
self.i2c.readfrom_into(self.device_address, result)
except OSError:
raise ValueError("No I2C device at address: %x" % self.device_address)
finally:
self.i2c.unlock()
*/
return 0;
}

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shared-module/busdevice/I2CDevice.h Normal file
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@ -0,0 +1,40 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
*
* 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.
*/
#ifndef MICROPY_INCLUDED_ATMEL_SAMD_SHARED_MODULE_BUSDEVICE_I2CDEVICE_H
#define MICROPY_INCLUDED_ATMEL_SAMD_SHARED_MODULE_BUSDEVICE_I2CDEVICE_H
#include "py/obj.h"
#include "common-hal/busio/I2C.h"
typedef struct {
mp_obj_base_t base;
busio_i2c_obj_t *i2c;
uint8_t device_address;
bool probe;
} busdevice_i2cdevice_obj_t;
#endif // MICROPY_INCLUDED_ATMEL_SAMD_SHARED_MODULE_BUSDEVICE_I2CDEVICE_H

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shared-module/busdevice/__init__.c Normal file
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