1/* 2 * Copyright 2019, Data61 3 * Commonwealth Scientific and Industrial Research Organisation (CSIRO) 4 * ABN 41 687 119 230. 5 * 6 * This software may be distributed and modified according to the terms of 7 * the BSD 2-Clause license. Note that NO WARRANTY is provided. 8 * See "LICENSE_BSD2.txt" for details. 9 * 10 * @TAG(DATA61_BSD) 11 */ 12 13procedure GPIO { 14 include <platsupport/gpio.h>; 15 int init_pin(in gpio_id_t pin_id, in gpio_dir_t dir); 16 /* GPIO_LEVEL_LOW for a low level, GPIO_LEVEL_HIGH for a high level */ 17 int set_level(in gpio_id_t pin_id, in gpio_level_t level); 18 /* Returns GPIO_LEVEL_HIGH on high, GPIO_LEVEL_LOW on low, negative number on error */ 19 int read_level(in gpio_id_t pin_id); 20}; 21