djsundog/circuitpython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
4.x
circuitpython/shared-bindings/busio/OneWire.h

44 lines
2.0 KiB
C
Raw Permalink Normal View History

Add low-level OneWire support class. This class focuses on the timing sensitive parts of the protocol. Everything else will be done by Python code. This also establishes that its OK to back a nativeio class with a bitbang implementation when no hardware acceleration exists. When it does, then bitbangio should be used to explicitly bitbang a protocol.
2017-03-25 08:04:49 -04:00
/*
* This file is part of the Micro Python 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.
*/
Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. cpx build compiles and loads and works in repl; test suite not run yet esp8266 not tested yet
2017-08-25 22:17:07 -04:00
#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_BUSIO_ONEWIRE_H
#define MICROPY_INCLUDED_SHARED_BINDINGS_BUSIO_ONEWIRE_H
Add low-level OneWire support class. This class focuses on the timing sensitive parts of the protocol. Everything else will be done by Python code. This also establishes that its OK to back a nativeio class with a bitbang implementation when no hardware acceleration exists. When it does, then bitbangio should be used to explicitly bitbang a protocol.
2017-03-25 08:04:49 -04:00
atmel-samd: Rework status LED implementation * Track status pin use by user code separately so it can take over the pins and then give them back. * Switch to hardware SPI for APA102 on Gemma and Trinket. * Merge microcontroller/types.h into microcontroller/Pin.h to better match approach going forwards.
2017-04-12 18:24:50 -04:00
#include "common-hal/microcontroller/Pin.h"
Split up nativeio. This was done to allow greatly granularity when deciding what functionality is built into each board's build. For example, this way pulseio can be omitted to allow for something else such as touchio.
2017-04-10 16:32:19 -04:00
#include "common-hal/busio/OneWire.h"
Add low-level OneWire support class. This class focuses on the timing sensitive parts of the protocol. Everything else will be done by Python code. This also establishes that its OK to back a nativeio class with a bitbang implementation when no hardware acceleration exists. When it does, then bitbangio should be used to explicitly bitbang a protocol.
2017-03-25 08:04:49 -04:00
Split up nativeio. This was done to allow greatly granularity when deciding what functionality is built into each board's build. For example, this way pulseio can be omitted to allow for something else such as touchio.
2017-04-10 16:32:19 -04:00
extern const mp_obj_type_t busio_onewire_type;
Add low-level OneWire support class. This class focuses on the timing sensitive parts of the protocol. Everything else will be done by Python code. This also establishes that its OK to back a nativeio class with a bitbang implementation when no hardware acceleration exists. When it does, then bitbangio should be used to explicitly bitbang a protocol.
2017-03-25 08:04:49 -04:00
Split up nativeio. This was done to allow greatly granularity when deciding what functionality is built into each board's build. For example, this way pulseio can be omitted to allow for something else such as touchio.
2017-04-10 16:32:19 -04:00
extern void common_hal_busio_onewire_construct(busio_onewire_obj_t* self,
Add low-level OneWire support class. This class focuses on the timing sensitive parts of the protocol. Everything else will be done by Python code. This also establishes that its OK to back a nativeio class with a bitbang implementation when no hardware acceleration exists. When it does, then bitbangio should be used to explicitly bitbang a protocol.
2017-03-25 08:04:49 -04:00
const mcu_pin_obj_t* pin);
Split up nativeio. This was done to allow greatly granularity when deciding what functionality is built into each board's build. For example, this way pulseio can be omitted to allow for something else such as touchio.
2017-04-10 16:32:19 -04:00
extern void common_hal_busio_onewire_deinit(busio_onewire_obj_t* self);
Do not allow a *io object to be used after deinit(). Fixes #278, #277, #276, #275.
2017-10-02 20:49:40 -04:00
extern bool common_hal_busio_onewire_deinited(busio_onewire_obj_t* self);
Split up nativeio. This was done to allow greatly granularity when deciding what functionality is built into each board's build. For example, this way pulseio can be omitted to allow for something else such as touchio.
2017-04-10 16:32:19 -04:00
extern bool common_hal_busio_onewire_reset(busio_onewire_obj_t* self);
extern bool common_hal_busio_onewire_read_bit(busio_onewire_obj_t* self);
extern void common_hal_busio_onewire_write_bit(busio_onewire_obj_t* self, bool bit);
Add low-level OneWire support class. This class focuses on the timing sensitive parts of the protocol. Everything else will be done by Python code. This also establishes that its OK to back a nativeio class with a bitbang implementation when no hardware acceleration exists. When it does, then bitbangio should be used to explicitly bitbang a protocol.
2017-03-25 08:04:49 -04:00
Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. cpx build compiles and loads and works in repl; test suite not run yet esp8266 not tested yet
2017-08-25 22:17:07 -04:00
#endif // MICROPY_INCLUDED_SHARED_BINDINGS_BUSIO_ONEWIRE_H
Reference in New Issue Copy Permalink