222f93f023
This platform is a basic waveshare stm32f107 devkit which contains a USART, USB device port, some buttons and some LEDs. Unfortunately not enough to bring up networking, but enough to test building and a simple contiki shell
74 lines
2.9 KiB
C
74 lines
2.9 KiB
C
/************************************************************************************/
|
|
/* The MIT License (MIT) */
|
|
/* */
|
|
/* Copyright (c) 2012 Jeff Ciesielski <jeffciesielski@gmail.com> */
|
|
/* Andrey Smirnov <andrew.smirnov@gmail.com> */
|
|
/* */
|
|
/* 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 _QUEUE_H_
|
|
#define _QUEUE_H_
|
|
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
|
|
struct generic_queue {
|
|
volatile void *head;
|
|
volatile void *tail;
|
|
size_t item_size;
|
|
size_t len;
|
|
size_t max_capacity;
|
|
volatile uint8_t memory[0];
|
|
};
|
|
|
|
#define DECLARE_QUEUE(element_type, name, max_size) \
|
|
struct name { \
|
|
struct generic_queue gq; \
|
|
element_type __elements[max_size]; \
|
|
} name = { \
|
|
.gq={ \
|
|
.len = 0, \
|
|
.item_size = sizeof(element_type), \
|
|
.max_capacity = max_size, \
|
|
}, \
|
|
}
|
|
|
|
|
|
static inline bool queue_is_empty(volatile void *q)
|
|
{
|
|
volatile struct generic_queue *gq = q;
|
|
|
|
return (gq->len == 0);
|
|
}
|
|
static inline int queue_get_len(volatile void *q)
|
|
{
|
|
volatile struct generic_queue *gq = q;
|
|
return gq->len;
|
|
}
|
|
static inline bool queue_is_full(volatile void *q)
|
|
{
|
|
volatile struct generic_queue *gq = q;
|
|
return (gq->len >= gq->max_capacity);
|
|
}
|
|
void queue_enqueue(volatile void *q, const void *elt) __attribute__((nonnull));
|
|
void queue_dequeue(volatile void *q, void *elt) __attribute__((nonnull));
|
|
|
|
#endif
|