From 751e3b7a820c13561cca47717d47d7784f776232 Mon Sep 17 00:00:00 2001 From: Paul Sokolovsky Date: Fri, 27 May 2016 00:57:18 +0300 Subject: extmod/virtpin: Initial implementation of open-ended C-level Pin interface. Using usual method of virtual method tables. Single virtual method, ioctl, is defined currently for all operations. This universal and extensible vtable-based method is also defined as a default MPHAL GPIO implementation, but a specific port may override it with its own implementation (e.g. close-ended, but very efficient, e.g. avoiding virtual method dispatch). --- extmod/virtpin.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 extmod/virtpin.h (limited to 'extmod/virtpin.h') diff --git a/extmod/virtpin.h b/extmod/virtpin.h new file mode 100644 index 000000000..3821f9dec --- /dev/null +++ b/extmod/virtpin.h @@ -0,0 +1,40 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2016 Paul Sokolovsky + * + * 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 "py/obj.h" + +#define MP_PIN_READ (1) +#define MP_PIN_WRITE (2) +#define MP_PIN_INPUT (3) +#define MP_PIN_OUTPUT (4) + +// Pin protocol +typedef struct _mp_pin_p_t { + mp_uint_t (*ioctl)(mp_obj_t obj, mp_uint_t request, uintptr_t arg, int *errcode); +} mp_pin_p_t; + +int mp_virtual_pin_read(mp_obj_t pin); +void mp_virtual_pin_write(mp_obj_t pin, int value); -- cgit v1.2.3