e6881f0829
There doesn't appear to be any use for only triggering on specific events,
so it's just easier to number them sequentially. This makes them smaller
values so they take up only 1 byte in the ringbuf, only 1 byte for the
opcode in the bytecode, and makes room for more events.
Also add a couple of new event types that need to be implemented (to avoid
re-numbering later).
And rename _COMPLETE and _STATUS to _DONE for consistency.
In the future the "trigger" keyword argument can be reinstated by requiring
the user to compute the bitmask, eg:
ble.irq(handler, 1 << _IRQ_SCAN_RESULT | 1 << _IRQ_SCAN_DONE)
100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
#ifndef MICROPY_INCLUDED_PY_RINGBUF_H
|
|
#define MICROPY_INCLUDED_PY_RINGBUF_H
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#ifdef _MSC_VER
|
|
#include "py/mpconfig.h" // For inline.
|
|
#endif
|
|
|
|
typedef struct _ringbuf_t {
|
|
uint8_t *buf;
|
|
uint16_t size;
|
|
uint16_t iget;
|
|
uint16_t iput;
|
|
} ringbuf_t;
|
|
|
|
// Static initialization:
|
|
// byte buf_array[N];
|
|
// ringbuf_t buf = {buf_array, sizeof(buf_array)};
|
|
|
|
// Dynamic initialization. This needs to become findable as a root pointer!
|
|
#define ringbuf_alloc(r, sz) \
|
|
{ \
|
|
(r)->buf = m_new(uint8_t, sz); \
|
|
(r)->size = sz; \
|
|
(r)->iget = (r)->iput = 0; \
|
|
}
|
|
|
|
static inline int ringbuf_get(ringbuf_t *r) {
|
|
if (r->iget == r->iput) {
|
|
return -1;
|
|
}
|
|
uint8_t v = r->buf[r->iget++];
|
|
if (r->iget >= r->size) {
|
|
r->iget = 0;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
static inline int ringbuf_peek(ringbuf_t *r) {
|
|
if (r->iget == r->iput) {
|
|
return -1;
|
|
}
|
|
return r->buf[r->iget];
|
|
}
|
|
|
|
static inline int ringbuf_put(ringbuf_t *r, uint8_t v) {
|
|
uint32_t iput_new = r->iput + 1;
|
|
if (iput_new >= r->size) {
|
|
iput_new = 0;
|
|
}
|
|
if (iput_new == r->iget) {
|
|
return -1;
|
|
}
|
|
r->buf[r->iput] = v;
|
|
r->iput = iput_new;
|
|
return 0;
|
|
}
|
|
|
|
static inline size_t ringbuf_free(ringbuf_t *r) {
|
|
return (r->size + r->iget - r->iput - 1) % r->size;
|
|
}
|
|
|
|
static inline size_t ringbuf_avail(ringbuf_t *r) {
|
|
return (r->size + r->iput - r->iget) % r->size;
|
|
}
|
|
|
|
// Note: big-endian. No-op if not enough room available for both bytes.
|
|
int ringbuf_get16(ringbuf_t *r);
|
|
int ringbuf_peek16(ringbuf_t *r);
|
|
int ringbuf_put16(ringbuf_t *r, uint16_t v);
|
|
|
|
#endif // MICROPY_INCLUDED_PY_RINGBUF_H
|