70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Abhishek Malik <abhishek.malik@intel.com>
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* Copyright (c) 2016 Intel Corporation.
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*
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* This program and the accompanying materials are made available under the
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* terms of the The MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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*/
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#include "a110x.h"
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a110x_context a110x_init(int pin) {
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// make sure MRAA is initialized
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int mraa_rv;
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if ((mraa_rv = mraa_init()) != MRAA_SUCCESS)
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{
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printf("%s: mraa_init() failed (%d).\n", __FUNCTION__, mraa_rv);
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return NULL;
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}
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a110x_context dev =
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(a110x_context) malloc(sizeof(struct _a110x_context));
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if (!dev)
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{
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return NULL;
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}
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dev->gpio_pin = pin;
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dev->gpio = mraa_gpio_init(dev->gpio_pin);
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if (mraa_gpio_dir(dev->gpio, MRAA_GPIO_IN) != MRAA_SUCCESS){
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free(dev);
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return NULL;
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}
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dev->isr_installed = false;
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return dev;
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}
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void a110x_close(a110x_context dev){
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free(dev);
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}
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upm_result_t a110x_magnet_detected(a110x_context dev, bool* res){
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int val = mraa_gpio_read(dev->gpio);
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if (val == 0)
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*res = false;
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else
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*res = true;
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return UPM_SUCCESS;
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}
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upm_result_t a110x_install_isr(a110x_context dev,
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mraa_gpio_edge_t edge_level,
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void (*isr)(void *), void *arg){
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if (dev->isr_installed)
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a110x_uninstall_isr(dev);
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mraa_gpio_isr(dev->gpio, edge_level, isr, arg);
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dev->isr_installed = true;
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return UPM_SUCCESS;
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}
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upm_result_t a110x_uninstall_isr(a110x_context dev){
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mraa_gpio_isr_exit(dev->gpio);
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dev->isr_installed = false;
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return UPM_SUCCESS;
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}
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