1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/*
* 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.
*/
#include "shared-bindings/microcontroller/Pin.h"
#include "shared-bindings/adafruit_bus_device/spi_device/SPIDevice.h"
#include "shared-bindings/util.h"
#include "shared-module/adafruit_bus_device/spi_device/SPIDevice.h"
#include "common-hal/digitalio/DigitalInOut.h"
#include "shared-bindings/digitalio/DigitalInOut.h"
#include "shared/runtime/buffer_helper.h"
#include "shared/runtime/context_manager_helpers.h"
#include "py/runtime.h"
#include "supervisor/shared/translate.h"
//| class SPIDevice:
//| """SPI Device Manager"""
//|
//| def __init__(self, spi: busio.SPI, chip_select: microcontroller.Pin, *, baudrate: int = 100000, polarity: int = 0, phase: int = 0, extra_clocks : int = 0) -> None:
//|
//| """
//| Represents a single SPI device and manages locking the bus and the device address.
//|
//| :param ~busio.SPI spi: The SPI bus the device is on
//| :param ~digitalio.DigitalInOut chip_select: The chip select pin object that implements the DigitalInOut API.
//| :param bool cs_active_value: Set to true if your device requires CS to be active high. Defaults to false.
//| :param int extra_clocks: The minimum number of clock cycles to cycle the bus after CS is high. (Used for SD cards.)
//|
//| Example::
//|
//| import busio
//| import digitalio
//| from board import *
//| from adafruit_bus_device.spi_device import SPIDevice
//| with busio.SPI(SCK, MOSI, MISO) as spi_bus:
//| cs = digitalio.DigitalInOut(D10)
//| device = SPIDevice(spi_bus, cs)
//| bytes_read = bytearray(4)
//| # The object assigned to spi in the with statements below
//| # is the original spi_bus object. We are using the busio.SPI
//| # operations busio.SPI.readinto() and busio.SPI.write().
//| with device as spi:
//| spi.readinto(bytes_read)
//| # A second transaction
//| with device as spi:
//| spi.write(bytes_read)"""
//| ...
//|
STATIC mp_obj_t adafruit_bus_device_spidevice_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_spidevice_obj_t *self = m_new_obj(adafruit_bus_device_spidevice_obj_t);
self->base.type = &adafruit_bus_device_spidevice_type;
enum { ARG_spi, ARG_chip_select, ARG_cs_active_value, ARG_baudrate, ARG_polarity, ARG_phase, ARG_extra_clocks };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_spi, MP_ARG_REQUIRED | MP_ARG_OBJ },
{ MP_QSTR_chip_select, MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_cs_active_value, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
{ MP_QSTR_baudrate, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 100000} },
{ MP_QSTR_polarity, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_phase, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_extra_clocks, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
};
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);
busio_spi_obj_t *spi = args[ARG_spi].u_obj;
common_hal_adafruit_bus_device_spidevice_construct(MP_OBJ_TO_PTR(self), spi, args[ARG_chip_select].u_obj, args[ARG_cs_active_value].u_bool, args[ARG_baudrate].u_int, args[ARG_polarity].u_int,
args[ARG_phase].u_int, args[ARG_extra_clocks].u_int);
if (args[ARG_chip_select].u_obj != MP_OBJ_NULL) {
digitalinout_result_t result = common_hal_digitalio_digitalinout_switch_to_output(MP_OBJ_TO_PTR(args[ARG_chip_select].u_obj),
true, DRIVE_MODE_PUSH_PULL);
if (result == DIGITALINOUT_INPUT_ONLY) {
mp_raise_NotImplementedError(translate("Pin is input only"));
}
}
return (mp_obj_t)self;
}
//| def __enter__(self) -> busio.SPI:
//| """Starts a SPI transaction by configuring the SPI and asserting chip select."""
//| ...
//|
STATIC mp_obj_t adafruit_bus_device_spidevice_obj___enter__(mp_obj_t self_in) {
adafruit_bus_device_spidevice_obj_t *self = MP_OBJ_TO_PTR(self_in);
return common_hal_adafruit_bus_device_spidevice_enter(self);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(adafruit_bus_device_spidevice___enter___obj, adafruit_bus_device_spidevice_obj___enter__);
//| def __exit__(self) -> None:
//| """Ends a SPI transaction by deasserting chip select. See
//| :ref:`lifetime-and-contextmanagers` for more info."""
//| ...
//|
STATIC mp_obj_t adafruit_bus_device_spidevice_obj___exit__(size_t n_args, const mp_obj_t *args) {
common_hal_adafruit_bus_device_spidevice_exit(MP_OBJ_TO_PTR(args[0]));
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(adafruit_bus_device_spidevice___exit___obj, 4, 4, adafruit_bus_device_spidevice_obj___exit__);
STATIC const mp_rom_map_elem_t adafruit_bus_device_spidevice_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&adafruit_bus_device_spidevice___enter___obj) },
{ MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&adafruit_bus_device_spidevice___exit___obj) },
};
STATIC MP_DEFINE_CONST_DICT(adafruit_bus_device_spidevice_locals_dict, adafruit_bus_device_spidevice_locals_dict_table);
const mp_obj_type_t adafruit_bus_device_spidevice_type = {
{ &mp_type_type },
.name = MP_QSTR_SPIDevice,
.make_new = adafruit_bus_device_spidevice_make_new,
.locals_dict = (mp_obj_dict_t *)&adafruit_bus_device_spidevice_locals_dict,
};
|
