Function esp_idf_sys::esp_efuse_find_unused_key_block

pub unsafe extern "C" fn esp_efuse_find_unused_key_block() -> esp_efuse_block_t

@brief Search for an unused key block and return the first one found.

See esp_efuse_key_block_unused for a description of an unused key block.

@return First unused key block, or EFUSE_BLK_KEY_MAX if no unused key block is found.