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| 1 | +/**************************************************************************** |
| 2 | + * |
| 3 | + * Copyright (C) 2020 PX4 Development Team. All rights reserved. |
| 4 | + * |
| 5 | + * Redistribution and use in source and binary forms, with or without |
| 6 | + * modification, are permitted provided that the following conditions |
| 7 | + * are met: |
| 8 | + * |
| 9 | + * 1. Redistributions of source code must retain the above copyright |
| 10 | + * notice, this list of conditions and the following disclaimer. |
| 11 | + * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | + * notice, this list of conditions and the following disclaimer in |
| 13 | + * the documentation and/or other materials provided with the |
| 14 | + * distribution. |
| 15 | + * 3. Neither the name PX4 nor the names of its contributors may be |
| 16 | + * used to endorse or promote products derived from this software |
| 17 | + * without specific prior written permission. |
| 18 | + * |
| 19 | + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 20 | + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 21 | + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 22 | + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 23 | + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 24 | + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 25 | + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 26 | + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 27 | + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 28 | + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| 29 | + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 30 | + * POSSIBILITY OF SUCH DAMAGE. |
| 31 | + * |
| 32 | + ****************************************************************************/ |
| 33 | + |
| 34 | +#include <px4_platform_common/px4_config.h> |
| 35 | +#include <systemlib/px4_macros.h> |
| 36 | + |
| 37 | +#include <arch/board/board.h> |
| 38 | + |
| 39 | +#include <errno.h> |
| 40 | + |
| 41 | +#include "kinetis.h" |
| 42 | +#include "hardware/kinetis_port.h" |
| 43 | + |
| 44 | +/**************************************************************************** |
| 45 | + * Name: kinetis_gpiosetevent |
| 46 | + * |
| 47 | + * Description: |
| 48 | + * Sets/clears GPIO based event and interrupt triggers. |
| 49 | + * |
| 50 | + * Input Parameters: |
| 51 | + * - pinset: gpio pin configuration |
| 52 | + * - rising/falling edge: enables |
| 53 | + * - event: generate event when set |
| 54 | + * - func: when non-NULL, generate interrupt |
| 55 | + * - arg: Argument passed to the interrupt callback |
| 56 | + * |
| 57 | + * Returned Value: |
| 58 | + * Zero (OK) on success; a negated errno value on failure indicating the |
| 59 | + * nature of the failure. |
| 60 | + * |
| 61 | + ****************************************************************************/ |
| 62 | +#if defined(CONFIG_KINETIS_GPIOIRQ) |
| 63 | +int kinetis_gpiosetevent(uint32_t pinset, bool risingedge, bool fallingedge, |
| 64 | + bool event, xcpt_t func, void *arg) |
| 65 | +{ |
| 66 | + int ret = -ENOSYS; |
| 67 | + |
| 68 | + if (func == NULL) { |
| 69 | + kinetis_pinirqdisable(pinset); |
| 70 | + ret = kinetis_pinirqattach(pinset, NULL, NULL); |
| 71 | + |
| 72 | + } else { |
| 73 | + ret = kinetis_pinirqattach(pinset, func, arg); |
| 74 | + pinset &= ~_PIN_INT_MASK |
| 75 | + DEBUGASSERT(port < KINETIS_NPORTS); |
| 76 | + |
| 77 | + if (risingedge) { |
| 78 | + pinset |= PIN_INT_RISING; |
| 79 | + } |
| 80 | + |
| 81 | + if (fallingedge) { |
| 82 | + pinset |= PIN_INT_FALLING; |
| 83 | + } |
| 84 | + |
| 85 | + kinetis_pinirqenable(pinset); |
| 86 | + } |
| 87 | + |
| 88 | + return ret; |
| 89 | +} |
| 90 | +#endif /* CONFIG_KINETIS_GPIOIRQ */ |
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