resources/pico-c-api/claim_8h_source.html

 /*
  * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */

 #ifndef _HARDWARE_CLAIM_H
 #define _HARDWARE_CLAIM_H

 #include "pico.h"
 #include "hardware/sync.h"

 #ifdef __cplusplus
 extern "C" {
 #endif

 void hw_claim_or_assert(uint8_t *bits, uint bit_index, const char *message);

 int hw_claim_unused_from_range(uint8_t *bits, bool required, uint bit_lsb, uint bit_msb, const char *message);

 bool hw_is_claimed(const uint8_t *bits, uint bit_index);

 void hw_claim_clear(uint8_t *bits, uint bit_index);

 uint32_t hw_claim_lock(void);

 void hw_claim_unlock(uint32_t token);

 #ifdef __cplusplus
 }
 #endif

 #endif
pico.h

hw_is_claimed
bool hw_is_claimed(const uint8_t *bits, uint bit_index)
Determine if a resource is claimed at the time of the callThe resource ownership is indicated by the ...
Definition: claim.c:17

hw_claim_or_assert
void hw_claim_or_assert(uint8_t *bits, uint bit_index, const char *message)
Atomically claim a resource, panicking if it is already in useThe resource ownership is indicated by ...
Definition: claim.c:21

hw_claim_unused_from_range
int hw_claim_unused_from_range(uint8_t *bits, bool required, uint bit_lsb, uint bit_msb, const char *message)
Atomically claim one resource out of a range of resources, optionally asserting if none are free...
Definition: claim.c:31

hw_claim_clear
void hw_claim_clear(uint8_t *bits, uint bit_index)
Atomically unclaim a resourceThe resource ownership is indicated by the bit_index bit in an array of ...
Definition: claim.c:49

hw_claim_unlock
void hw_claim_unlock(uint32_t token)
Release the runtime mutual exclusion lock provided by the hardware_claim library. ...
Definition: claim.c:13

sync.h

hw_claim_lock
uint32_t hw_claim_lock(void)
Acquire the runtime mutual exclusion lock provided by the hardware_claim libraryThis method is called...
Definition: claim.c:9