pio.h

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/*
 * Copyright (C) 2021 Otto-von-Guericke Universität Magdeburg
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once
 
#include <stdbool.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#ifndef PIO_DEV
#define PIO_DEV(x)          (x)
#endif
 
#define PIO_PROGRAM_NOT_LOADED      (-1)
 
struct pio_isr_vec;
 
typedef unsigned pio_t;
 
typedef int pio_sm_t;
 
typedef struct {
    unsigned instr_numof; 
    int location;         
    bool written;         
} pio_program_t;
 
void pio_init(pio_t pio);
 
void pio_start_programs(void);
 
pio_sm_t pio_sm_lock(pio_t pio);
 
void pio_sm_unlock(pio_t pio, pio_sm_t sm);
 
void pio_sm_start(pio_t pio, pio_sm_t sm);
 
void pio_sm_stop(pio_t pio, pio_sm_t sm);
 
int pio_alloc_program(pio_t pio, pio_program_t *prog);
 
int pio_alloc_program_sm_lock_any(pio_t *pio_ptr, pio_sm_t *sm_ptr, pio_program_t *program);
 
void pio_free_program(pio_t pio, pio_program_t *prog);
 
#ifdef __cplusplus
}
#endif