From 729f2a2c3ebfb2612d873caf453a1d7ca02180d9 Mon Sep 17 00:00:00 2001 From: dmlunar Date: Wed, 22 Jan 2025 16:47:21 +0200 Subject: varpa: initial public commit --- firmware/inc/peripheral/ring.h | 77 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 firmware/inc/peripheral/ring.h (limited to 'firmware/inc/peripheral/ring.h') diff --git a/firmware/inc/peripheral/ring.h b/firmware/inc/peripheral/ring.h new file mode 100644 index 0000000..d2a713d --- /dev/null +++ b/firmware/inc/peripheral/ring.h @@ -0,0 +1,77 @@ +/** + * + * Author: Dylan Muller + * Copyright (c) 2025 + * All rights reserved. + * + * - Commercial/IP use prohibited. + * - Attribution required. + * See License.txt + * + */ + +#ifndef RING_H_ +#define RING_H_ + +#include +#include +#include + +typedef struct +{ + uint8_t *buf; + uint8_t *end; + uint8_t *write; + uint8_t *read; +} ring_t; + +#define RING_INIT(buf_, len_) \ + ((ring_t){ \ + .buf = (buf_), \ + .end = (buf_)+(len_), \ + .write = (buf_), \ + .read = (buf_)} \ + ) + +ring_t ring_init( + uint8_t *buf, + size_t len +); + +bool ring_is_empty( + ring_t ring +); + +bool ring_is_full( + ring_t ring +); + +size_t ring_push_available( + ring_t ring +); + +size_t ring_pop_available( + ring_t ring +); + +bool ring_push( + ring_t *ring, + uint8_t data +); + +bool ring_push_over( + ring_t *ring, + uint8_t data +); + +bool ring_pop( + ring_t *ring, + uint8_t *data +); + +bool ring_peek( + ring_t *ring, + uint8_t *data +); + +#endif -- cgit v1.2.3-70-g09d2