pio.h File Reference
High-level PIO peripheral driver interface. More...
Detailed Description
High-level PIO peripheral driver interface.
Definition in file pio.h.
#include <stdbool.h>
Include dependency graph for pio.h: This graph shows which files directly or indirectly include this file:Go to the source code of this file.
Data Structures | |
| struct | pio_program_t |
| Struct that models a PIO program. More... | |
Macros | |
| #define | PIO_DEV(x) (x) |
| Default PIO device access macro. | |
| #define | PIO_PROGRAM_NOT_LOADED (-1) |
| Program location that states that the program has not been loaded into instruction memory. | |
Typedefs | |
| typedef unsigned | pio_t |
| PIO index type. | |
| typedef int | pio_sm_t |
| PIO state machine index type. | |
Functions | |
| void | pio_init (pio_t pio) |
| Initialize a PIO device. More... | |
| void | pio_start_programs (void) |
| Start automatically configured PIO programs. More... | |
| pio_sm_t | pio_sm_lock (pio_t pio) |
Get exclusive access to one of the state machines of PIO pio. More... | |
| void | pio_sm_unlock (pio_t pio, pio_sm_t sm) |
| Release a previously locked state machine. More... | |
| void | pio_sm_start (pio_t pio, pio_sm_t sm) |
| Start a state machine and execute the previously loaded program. More... | |
| void | pio_sm_stop (pio_t pio, pio_sm_t sm) |
| Stop the execution of a program. More... | |
| int | pio_alloc_program (pio_t pio, pio_program_t *prog) |
| Allocate the required instruction memory to load the given PIO program into. More... | |
| int | pio_alloc_program_sm_lock_any (pio_t *pio_ptr, pio_sm_t *sm_ptr, pio_program_t *program) |
| Convenience function which performs the usual PIO program resource acquisition. More... | |
| void | pio_free_program (pio_t pio, pio_program_t *prog) |
Release the allocated instruction memory occupied by prog. More... | |
